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Professional-Cloud-Network-Engineer Google Cloud Certified - Professional Cloud Network Engineer Questions and Answers

Questions 4

Your organization is implementing a new security policy to control how firewall rules are applied to control flows between virtual machines (VMs). Using Google-recommended practices, you need to set up a firewall rule to enforce strict control of traffic between VM A and VM B. You must ensure that communications flow only from VM A to VM B within the VPC, and no other communication paths are allowed. No other firewall rules exist in the VPC. Which firewall rule should you configure to allow only this communication path?

Options:

A.

Firewall rule direction: ingress

Action: allow

Target: VM B service account

Source ranges: VM A service account

Priority: 1000

B.

Firewall rule direction: ingress

Action: allow

Target: specific VM B tag

Source ranges: VM A tag and VM A source IP address

Priority: 1000

C.

Firewall rule direction: ingress

Action: allow

Target: VM A service account

Source ranges: VM B service account and VM B source IP address

Priority: 100

D.

Firewall rule direction: ingress

Action: allow

Target: specific VM A tag

Source ranges: VM B tag and VM B source IP address

Priority: 100

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Questions 5

You are maintaining a Shared VPC in a host project. Several departments within your company have infrastructure in different service projects attached to the Shared VPC and use Identity and Access Management (IAM) permissions to manage the cloud resources in those projects. VPC Network Peering is also set up between the Shared VPC and a common services VPC that is not in a service project. Several users are experiencing failed connectivity between certain instances in different Shared VPC service projects and between certain instances and the internet. You need to validate the network configuration to identify whether a misconfiguration is the root cause of the problem. What should you do?

Options:

A.

Review the VPC audit logs in Cloud Logging for the affected instances.

B.

Use Secure Shell (SSH) to connect to the affected Compute Engine instances, and run a series of PING tests to the other affected endpoints and the 8.8.8.8 IPv4 address.

C.

Run Connectivity Tests from Network Intelligence Center to check connectivity between the affected endpoints in your network and the internet.

D.

Enable VPC Flow Logs for all VPCs, and review the logs in Cloud Logging for the affected instances.

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Questions 6

Your company has just launched a new critical revenue-generating web application. You deployed the application for scalability using managed instance groups, autoscaling, and a network load balancer as frontend. One day, you notice severe bursty traffic that the caused autoscaling to reach the maximum number of instances, and users of your application cannot complete transactions. After an investigation, you think it as a DDOS attack. You want to quickly restore user access to your application and allow successful transactions while minimizing cost.

Which two steps should you take? (Choose two.)

Options:

A.

Use Cloud Armor to blacklist the attacker’s IP addresses.

B.

Increase the maximum autoscaling backend to accommodate the severe bursty traffic.

C.

Create a global HTTP(s) load balancer and move your application backend to this load balancer.

D.

Shut down the entire application in GCP for a few hours. The attack will stop when the application is offline.

E.

SSH into the backend compute engine instances, and view the auth logs and syslogs to further understand the nature of the attack.

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Questions 7

You are in the early stages of planning a migration to GCP. You want to test the functionality of your hybrid cloud design before you start to implement it in production. The design includes services running on a Compute Engine Virtual Machine instance that need to communicate to on-premises servers using private IP addresses. The on-premises servers have connectivity to the internet, but you have not yet established any Cloud Interconnect connections. You want to choose the lowest cost method of enabling connectivity between your instance and on-premises servers and complete the test in 24 hours.

Which connectivity method should you choose?

Options:

A.

Cloud VPN

B.

50-Mbps Partner VLAN attachment

C.

Dedicated Interconnect with a single VLAN attachment

D.

Dedicated Interconnect, but don’t provision any VLAN attachments

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Questions 8

Your company has provisioned 2000 virtual machines (VMs) in the private subnet of your Virtual Private Cloud (VPC) in the us-east1 region. You need to configure each VM to have a minimum of 128 TCP connections to a public repository so that users can download software updates and packages over the internet. You need to implement a Cloud NAT gateway so that the VMs are able to perform outbound NAT to the internet. You must ensure that all VMs can simultaneously connect to the public repository and download software updates and packages. Which two methods can you use to accomplish this? (Choose two.)

Options:

A.

Configure the NAT gateway in manual allocation mode, allocate 2 NAT IP addresses, and update the minimum number of ports per VM to 256.

B.

Create a second Cloud NAT gateway with the default minimum number of ports configured per VM to 64.

C.

Use the default Cloud NAT gateway's NAT proxy to dynamically scale using a single NAT IP address.

D.

Use the default Cloud NAT gateway to automatically scale to the required number of NAT IP addresses, and update the minimum number of ports per VM to 128.

E.

Configure the NAT gateway in manual allocation mode, allocate 4 NAT IP addresses, and update the minimum number of ports per VM to 128.

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Questions 9

Your team is developing an application that will be used by consumers all over the world. Currently, the application sits behind a global external application load balancer You need to protect the application from potential application-level attacks. What should you do?

Options:

A.

Enable Cloud CDN on the backend service.

B.

Create multiple firewall deny rules to block malicious users, and apply them to the global external application load balancer

C.

Create a Google Cloud Armor security policy with web application firewall rules, and apply the security policy to the backend service.

D.

Create a VPC Service Controls perimeter with the global external application load balancer as the protected service, and apply it to the backend service

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Questions 10

You have an application hosted on a Compute Engine virtual machine instance that cannot communicate with a resource outside of its subnet. When you review the flow and firewall logs, you do not see any denied traffic listed.

During troubleshooting you find:

• Flow logs are enabled for the VPC subnet, and all firewall rules are set to log.

• The subnetwork logs are not excluded from Stackdriver.

• The instance that is hosting the application can communicate outside the subnet.

• Other instances within the subnet can communicate outside the subnet.

• The external resource initiates communication.

What is the most likely cause of the missing log lines?

Options:

A.

The traffic is matching the expected ingress rule.

B.

The traffic is matching the expected egress rule.

C.

The traffic is not matching the expected ingress rule.

D.

The traffic is not matching the expected egress rule.

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Questions 11

You have several VMs across multiple VPCs in your cloud environment that require access to internet endpoints. These VMs cannot have public IP addresses due to security policies, so you plan to use Cloud NAT to provide outbound internet access. Within your VPCs, you have several subnets in each region. You want to ensure that only specific subnets have access to the internet through Cloud NAT. You want to avoid any unintentional configuration issues caused by other administrators and align to Google-recommended practices. What should you do?

Options:

A.

Deploy Cloud NAT in each VPC and configure a custom source range that includes the allowed subnets. Configure Cloud NAT rules to only permit the allowed subnets to egress through Cloud NAT.

B.

Create a firewall rule in each VPC at priority 500 that targets all instances in the network and denies egress to the internet (0.0.0.0/0). Create a firewall rule at priority 300 that targets all instances in the network, has a source filter that maps to the allowed subnets, and allows egress to the internet (0.0.0.0/0). Deploy Cloud NAT and configure all primary and secondary subnet source ranges.

C.

Create a firewall rule in each VPC at priority 500 that targets all instances in the network and denies egress to the internet (0.0.0.0/0). Create a firewall rule at priority 300 that targets all instances in the network, has a source filter that maps to the allowed subnets, and allows egress to the internet (0.0.0.0/0). Deploy Cloud NAT and configure a custom source range that includes the allowed subnets.

D.

Create a constraints/compute.restrictCloudNATUsage organizational policy constraint. Attach the constraint to a folder that contains the associated projects. Configure the allowedValues to only contain the subnets that should have internet access. Deploy Cloud NAT and select only the allowed subnets.

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Questions 12

Your organization wants to set up hybrid connectivity with VLAN attachments that terminate in a single Cloud Router with 99.9% uptime. You need to create a network design for your on-premises router that meets those requirements and has an active/passive configuration that uses only one VLAN attachment at a time. What should you do?

Options:

A.

Create a design that uses a BGP multi-exit discriminator (MED) attribute to influence the egress path from Google Cloud to the on-premises environment.

B.

Create a design that uses the as_path BGP attribute to influence the egress path from Google Cloud to the on-premises environment.

C.

Create a design that uses an equal-cost multipath (ECMP) with flow-based hashing on your on-premises devices.

D.

Create a design that uses the local_pref BGP attribute to influence the egress path from Google Cloud to the on-premises environment.

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Questions 13

Question:

You are troubleshooting connectivity issues between Google Cloud and a public SaaS provider. Connectivity between the two environments is through the public internet. Your users are reporting intermittent connection errors when using TCP to connect; however, ICMP tests show no failures. According to users, errors occur around the same time every day. You want to troubleshoot and gather information by using Google Cloud tools that are most likely to provide insights into what is occurring within Google Cloud. What should you do?

Options:

A.

Create a Connectivity Test by using TCP, the source IP address of your test VM, and the destination IP address of the public SaaS provider. Review the live data plane analysis and take the next steps based on the test results.

B.

Enable and review Cloud Logging on your Cloud NAT gateway. Look for logs with errors matching the destination IP address of the public SaaS provider.

C.

Enable the Firewall insights API. Set the deny rule insights observation period to one day. Review the insights to assure there are no firewall rules denying traffic.

D.

Enable and review Cloud Logging for Cloud Armor. Look for logs with errors matching the destination IP address of the public SaaS provider.

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Questions 14

You need to centralize the Identity and Access Management permissions and email distribution for the WebServices Team as efficiently as possible.

What should you do?

Options:

A.

Create a Google Group for the WebServices Team.

B.

Create a G Suite Domain for the WebServices Team.

C.

Create a new Cloud Identity Domain for the WebServices Team.

D.

Create a new Custom Role for all members of the WebServices Team.

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Questions 15

Question:

Your organization is developing a landing zone architecture with the following requirements:

    No communication between production and non-production environments.

    Communication between applications within an environment may be necessary.

    Network administrators should centrally manage all network resources, including subnets, routes, and firewall rules.

    Each application should be billed separately.

    Developers of an application within a project should have the autonomy to create their compute resources.

    Up to 1000 applications are expected per environment.

What should you do?

Options:

A.

Create a design that has a Shared VPC for each project. Implement hierarchical firewall policies to apply micro-segmentation between VPCs.

B.

Create a design where each project has its own VPC. Ensure all VPCs are connected by a Network Connectivity Center hub that is centrally managed by the network team.

C.

Create a design that implements a single Shared VPC. Use VPC firewall rules with secure tags to enforce micro-segmentation between environments.

D.

Create a design that has one host project with a Shared VPC for the production environment, another host project with a Shared VPC for the non-production environment, and a service project that is associated with the corresponding host project for each initiative.

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Questions 16

Your organization is deploying a single project for 3 separate departments. Two of these departments require network connectivity between each other, but the third department should remain in isolation. Your design should create separate network administrative domains between these departments. You want to minimize operational overhead.

How should you design the topology?

Options:

A.

Create a Shared VPC Host Project and the respective Service Projects for each of the 3 separate departments.

B.

Create 3 separate VPCs, and use Cloud VPN to establish connectivity between the two appropriate VPCs.

C.

Create 3 separate VPCs, and use VPC peering to establish connectivity between the two appropriate VPCs.

D.

Create a single project, and deploy specific firewall rules. Use network tags to isolate access between the departments.

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Questions 17

You recently noticed a recurring daily spike in network usage in your Google Cloud project. You need to identify the virtual machine (VM) instances and type of traffic causing the spike in traffic utilization while minimizing the cost and management overhead required. What should you do?

Options:

A.

Enable VPC Flow Logs and send the output to BigQuery for analysis.

B.

Enable Firewall Rules Logging for all allowed traffic and send the output to BigQuery for analysis.

C.

Configure Packet Mirroring to send all traffic to a VM. Use Wireshark on the VM to identity traffic utilization for each VM in the VPC.

D.

Deploy a third-party network appliance and configure it as the default gateway. Use the third-party network appliance to identify users with high network traffic.

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Questions 18

You have an HA VPN connection with two tunnels running in active/passive mode between your Virtual Private Cloud (VPC) and on-premises network. Traffic over the connection has recently increased from 1 gigabit per second (Gbps) to 4 Gbps, and you notice that packets are being dropped. You need to configure your VPN connection to Google Cloud to support 4 Gbps. What should you do?

Options:

A.

Configure the remote autonomous system number (ASN) to 4096.

B.

Configure a second Cloud Router to scale bandwidth in and out of the VPC.

C.

Configure the maximum transmission unit (MTU) to its highest supported value.

D.

Configure a second set of active/passive VPN tunnels.

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Questions 19

You are using a third-party next-generation firewall to inspect traffic. You created a custom route of 0.0.0.0/0 to route egress traffic to the firewall. You want to allow your VPC instances without public IP addresses to access the BigQuery and Cloud Pub/Sub APIs, without sending the traffic through the firewall.

Which two actions should you take? (Choose two.)

Options:

A.

Turn on Private Google Access at the subnet level.

B.

Turn on Private Google Access at the VPC level.

C.

Turn on Private Services Access at the VPC level.

D.

Create a set of custom static routes to send traffic to the external IP addresses of Google APIs and services via the default internet gateway.

E.

Create a set of custom static routes to send traffic to the internal IP addresses of Google APIs and services via the default internet gateway.

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Questions 20

Your organization has Compute Engine instances in us-east1, us-west2, and us-central1. Your organization also has an existing Cloud Interconnect physical connection in the East Coast of the United States with a single VLAN attachment and Cloud Router in us-east1. You need to provide a design with high availability and ensure that if a region goes down, you still have access to all your other Virtual Private Cloud (VPC) subnets. You need to accomplish this in the most cost-effective manner possible. What should you do?

Options:

A.

Configure your VPC routing in regional mode.

Add an additional Cloud Interconnect VLAN attachment in the us-east1 region, and configure a Cloud Router in us-east1.

B.

Configure your VPC routing in global mode.

Add an additional Cloud Interconnect VLAN attachment in the us-east1 region, and configure a Cloud Router in us-east1.

C.

Configure your VPC routing in global mode.

Add an additional Cloud Interconnect VLAN attachment in the us-west2 region, and configure a Cloud Router in us-west2.

D.

Configure your VPC routing in regional mode.

Add additional Cloud Interconnect VLAN attachments in the us-west2 and us-central1 regions, and configure Cloud Routers in us-west2 and us-central1.

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Questions 21

You need to create the technical architecture for hybrid connectivity from your data center to Google Cloud This will be managed by a partner. You want to follow Google-recommended practices for production-level applications. What should you do?

Options:

A.

Ask the partner to install two security appliances in the data center. Configure one VPN connection from each of these devices to Google

Cloud, and ensure that the VPN devices on-premises are in separate racks on separate power and cooling systems.

B.

Configure two Partner Interconnect connections in one metropolitan area (metro). Make sure the Interconnect connections are placed in

different metro edge availability domains. Configure two VLAN attachments in a single region, and configure regional dynamic routing on

the VPC

C.

Configure two Partner Interconnect connections in one metro and two connections in another metro Make sure the Interconnect

connections are placed in different metro edge availability domains. Configure two VLAN attachments in one region and two VLAN

attachments in another region, and configure global dynamic routing on the VPC

D.

Configure two Partner Interconnect connections in one metro and two connections in another metro. Make sure the Interconnect connections are placed in different metro edge availability domains. Configure two VLAN attachments in one region and two VLAN attachments in another region, and configure regional dynamic routing on the VPC.

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Questions 22

You have configured Cloud CDN using HTTP(S) load balancing as the origin for cacheable content. Compression is configured on the web servers, but responses served by Cloud CDN are not compressed.

What is the most likely cause of the problem?

Options:

A.

You have not configured compression in Cloud CDN.

B.

You have configured the web servers and Cloud CDN with different compression types.

C.

The web servers behind the load balancer are configured with different compression types.

D.

You have to configure the web servers to compress responses even if the request has a Via header.

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Questions 23

You are designing an IP address scheme for new private Google Kubernetes Engine (GKE) clusters. Due to IP address exhaustion of the RFC 1918 address space In your enterprise, you plan to use privately used public IP space for the new clusters. You want to follow Google-recommended practices. What should you do after designing your IP scheme?

Options:

A.

Create the minimum usable RFC 1918 primary and secondary subnet IP ranges for the clusters. Re-use the secondary address range for the pods across multiple private GKE clusters

B.

Create the minimum usable RFC 1918 primary and secondary subnet IP ranges for the clusters Re-use the secondary address range for the services across multiple private GKE clusters

C.

Create privately used public IP primary and secondary subnet ranges for the clusters. Create a private GKE cluster with the following options selected and

D.

Create privately used public IP primary and secondary subnet ranges for the clusters. Create a private GKE cluster With the following options selected --disable-default-snat, —enable-ip-alias, and—enable-private-nodes

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Questions 24

You have an application that is running in a managed instance group. Your development team has released an updated instance template which contains a new feature which was not heavily tested. You want to minimize impact to users if there is a bug in the new template.

How should you update your instances?

Options:

A.

Manually patch some of the instances, and then perform a rolling restart on the instance group.

B.

Using the new instance template, perform a rolling update across all instances in the instance group. Verify the new feature once the rollout completes.

C.

Deploy a new instance group and canary the updated template in that group. Verify the new feature in the new canary instance group, and then update the original instance group.

D.

Perform a canary update by starting a rolling update and specifying a target size for your instances to receive the new template. Verify the new feature on the canary instances, and then roll forward to the rest of the instances.

Questions 25

You are configuring a new HTTP application that will be exposed externally behind both IPv4 and IPv6 virtual IP addresses, using ports 80, 8080, and 443. You will have backends in two regions: us-west1 and us-east1. You want to serve the content with the lowest-possible latency while ensuring high availability and autoscaling, and create native content-based rules using the HTTP hostname and request path. The IP addresses of the clients that connect to the load balancer need to be visible to the backends. Which configuration should you use?

Options:

A.

Use Network Load Balancing

B.

Use TCP Proxy Load Balancing with PROXY protocol enabled

C.

Use External HTTP(S) Load Balancing with URL Maps and custom headers

D.

Use External HTTP(S) Load Balancing with URL Maps and an X-Forwarded-For header

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Questions 26

You are deploying an HA VPN within Google Cloud. You need to exchange routes dynamically between your on-premises gateway and Google Cloud. You have already created an HA VPN gateway and a peer VPN gateway resource. What should you do?

Options:

A.

Create a Cloud Router, add VPN tunnels, and then configure BGP sessions.

B.

Create a second HA VPN gateway, add VPN tunnels, and enable global dynamic routing.

C.

Create a Cloud Router, add VPN tunnels, and enable global dynamic routing.

D.

Create a Cloud Router, add VPN tunnels, and then configure static routes to your subnet ranges.

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Questions 27

You are developing an HTTP API hosted on a Compute Engine virtual machine instance that must be invoked only by multiple clients within the same Virtual Private Cloud (VPC). You want clients to be able to get the IP address of the service. What should you do?

Options:

A.

Reserve a static external IP address and assign it to an HTTP(S) load balancing service's forwarding rule. Clients should use this IP address to connect to the service.

B.

Ensure that clients use Compute Engine internal DNS by connecting to the instance name with the url https://[INSTANCE_NAME].[ZONE] .c.[PROJECT_ID].internal/.

C.

Reserve a static external IP address and assign it to an HTTP(S) load balancing service's forwarding rule. Then, define an A record in Cloud DNS. Clients should use the name of the A record to connect to the service.

D.

Ensure that clients use Compute Engine internal DNS by connecting to the instance name with the url https://[API_NAME]/[API_VERSION] /.

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Questions 28

You configured a single IPSec Cloud VPN tunnel for your organization to a third-party customer. You confirmed that the VPN tunnel is established; however, the BGP session status states that BGP is not configured. The customer has provided you with their BGP settings:

    Local BGP address: 169.254.11.1/30

    Local ASN: 64515

    Peer BGP address: 169.254.11.2

    Peer ASN: 64517

    Base MED: 1000

    MD5 Authentication: Disabled

You need to configure the local BGP session for this tunnel based on the settings provided by the customer. You already associated the Cloud Router with the Cloud VPN Tunnel. What settings should you use for the BGP session?

Options:

A.

Peer ASN: 64517

Advertised Route Priority (MED): 100

Local BGP IP: 169.254.11.2

Peer BGP IP: 169.254.11.1

MD5 Authentication: Disabled

B.

Peer ASN: 64515

Advertised Route Priority (MED): 100

Local BGP IP: 169.254.11.2

Peer BGP IP: 169.254.11.1

MD5 Authentication: Disabled

C.

Peer ASN: 64515

Advertised Route Priority (MED): 1000

Local BGP IP: 169.254.11.2

Peer BGP IP: 169.254.11.1

MD5 Authentication: Enabled

D.

Peer ASN: 64515

Advertised Route Priority (MED): 100

Local BGP IP: 169.254.11.1

Peer BGP IP: 169.254.11.2

MD5 Authentication: Disabled

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Questions 29

You are deploying an application that runs on Compute Engine instances. You need to determine how to expose your application to a new customer You must ensure that your application meets the following requirements

• Maps multiple existing reserved external IP addresses to the Instance

• Processes IP Encapsulating Security Payload (ESP) traffic

What should you do?

Options:

A.

Configure a target pool, and create protocol forwarding rules for each external IP address.

B.

Configure a backend service, and create an external network load balancer for each external IP address

C.

Configure a target instance, and create a protocol forwarding rule for each external IP address to be mapped to the instance.

D.

Configure the Compute Engine Instances' network Interface external IP address from None to Ephemeral Add as many external IP addresses as required

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Questions 30

You need to enable Cloud CDN for all the objects inside a storage bucket. You want to ensure that all the object in the storage bucket can be served by the CDN.

What should you do in the GCP Console?

Options:

A.

Create a new cloud storage bucket, and then enable Cloud CDN on it.

B.

Create a new TCP load balancer, select the storage bucket as a backend, and then enable Cloud CDN on the backend.

C.

Create a new SSL proxy load balancer, select the storage bucket as a backend, and then enable Cloud CDN on the backend.

D.

Create a new HTTP load balancer, select the storage bucket as a backend, enable Cloud CDN on the backend, and make sure each object inside the storage bucket is shared publicly.

Questions 31

You recently deployed Cloud VPN to connect your on-premises data canter to Google Cloud. You need to monitor the usage of this VPN and set up alerts in case traffic exceeds the maximum allowed. You need to be able to quickly decide whether to add extra links or move to a Dedicated Interconnect. What should you do?

Options:

A.

In the Network Intelligence Canter, check for the number of packet drops on the VPN.

B.

In the Google Cloud Console, use Monitoring Query Language to create a custom alert for bandwidth utilization.

C.

In the Monitoring section of the Google Cloud Console, use the Dashboard section to select a default dashboard for VPN usage.

D.

In the VPN section of the Google Cloud Console, select the VPN under hybrid connectivity, and then select monitoring to display utilization on the dashboard.

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Questions 32

Question:

Your organization wants to deploy HA VPN over Cloud Interconnect to ensure encryption in transit over the Cloud Interconnect connections. You have created a Cloud Router and two encrypted VLAN attachments that have a 5 Gbps capacity and a BGP configuration. The BGP sessions are operational. You need to complete the deployment of the HA VPN over Cloud Interconnect. What should you do?

Options:

A.

Enable MACsec on Partner Interconnect.

B.

Create an HA VPN gateway and associate the gateway with your two encrypted VLAN attachments. Configure the HA VPN Cloud Router, peer VPN gateway resources, and HA VPN tunnels. Use the same Cloud Router used for the Cloud Interconnect tier.

C.

Create an HA VPN gateway and associate the gateway with your two encrypted VLAN attachments. Create a new dedicated HA VPN Cloud Router peer VPN gateway resources and HA VPN tunnels.

D.

Enable MACsec for Cloud Interconnect on the VLAN attachments.

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Questions 33

Question:

Your organization recently exposed a set of services through a global external Application Load Balancer. After conducting some testing, you observed that responses would intermittently yield a non-HTTP 200 response. You need to identify the error. What should you do? (Choose 2 answers)

Options:

A.

Access a VM in the VPC through SSH, and try to access a backend VM directly. If the request is successful from the VM, increase the quantity of backends.

B.

Enable and review the health check logs. Review the error responses in Cloud Logging.

C.

Validate the health of the backend service. Enable logging on the load balancer, and identify the error response in Cloud Logging. Determine the cause of the error by reviewing the statusDetails log field.

D.

Delete the load balancer and backend services. Create a new passthrough Network Load Balancer. Configure a failover group of VMs for the backend.

E.

Validate the health of the backend service. Enable logging for the backend service, and identify the error response in Cloud Logging. Determine the cause of the error by reviewing the statusDetails log field.

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Questions 34

In your Google Cloud organization, you have two folders: Dev and Prod. You want a scalable and consistent way to enforce the following firewall rules for all virtual machines (VMs) with minimal cost:

Port 8080 should always be open for VMs in the projects in the Dev folder.

Any traffic to port 8080 should be denied for all VMs in your projects in the Prod folder.

What should you do?

Options:

A.

Create and associate a firewall policy with the Dev folder with a rule to open port 8080. Create and associate a firewall policy with the Prod folder with a rule to deny traffic to port 8080.

B.

Create a Shared VPC for the Dev projects and a Shared VPC for the Prod projects. Create a VPC firewall rule to open port 8080 in the Shared VPC for Dev. Create a firewall rule to deny traffic to port 8080 in the Shared VPC for Prod. Deploy VMs to those Shared VPCs.

C.

In all VPCs for the Dev projects, create a VPC firewall rule to open port 8080. In all VPCs for the Prod projects, create a VPC firewall rule to deny traffic to port 8080.

D.

Use Anthos Config Connector to enforce a security policy to open port 8080 on the Dev VMs and deny traffic to port 8080 on the Prod VMs.

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Questions 35

You decide to set up Cloud NAT. After completing the configuration, you find that one of your instances is not using the Cloud NAT for outbound NAT.

What is the most likely cause of this problem?

Options:

A.

The instance has been configured with multiple interfaces.

B.

An external IP address has been configured on the instance.

C.

You have created static routes that use RFC1918 ranges.

D.

The instance is accessible by a load balancer external IP address.

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Questions 36

You have recently been put in charge of managing identity and access management for your organization. You have several projects and want to use scripting and automation wherever possible. You want to grant the editor role to a project member.

Which two methods can you use to accomplish this? (Choose two.)

Options:

A.

GetIamPolicy() via REST API

B.

setIamPolicy() via REST API

C.

gcloud pubsub add-iam-policy-binding Sprojectname --member user:Susername --role roles/editor

D.

gcloud projects add-iam-policy-binding Sprojectname --member user:Susername --role roles/editor

E.

Enter an email address in the Add members field, and select the desired role from the drop-down menu in the GCP Console.

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Questions 37

You have the networking configuration shown in the diagram. A pair of redundant Dedicated Interconnect connections (int-Igal and int-Iga2) terminate on the same Cloud Router. The Interconnect connections terminate on two separate on-premises routers. You are advertising the same prefixes from the Border Gateway Protocol (BGP) sessions associated with the Dedicated Interconnect connections. You need to configure one connection as Active for both ingress and egress traffic. If the active Interconnect connection fails, you want the passive Interconnect connection to automatically begin routing all traffic Which two actions should you take to meet this requirement? (Choose Two)

Options:

A.

Configure the advertised route priority > 10,200 on the active Interconnect connection.

B.

Advertise a lower MED on the passive Interconnect connection from the on-premises router

C.

Configure the advertised route priority as 200 for the BGP session associated with the active Interconnect connection.

D.

Configure the advertised route priority as 200 for the BGP session associated with the passive Interconnect connection.

E.

Advertise a lower MED on the active Interconnect connection from the on-premises router

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Questions 38

You are disabling DNSSEC for one of your Cloud DNS-managed zones. You removed the DS records from your zone file, waited for them to expire from the cache, and disabled DNSSEC for the zone. You receive reports that DNSSEC validating resolves are unable to resolve names in your zone.

What should you do?

Options:

A.

Update the TTL for the zone.

B.

Set the zone to the TRANSFER state.

C.

Disable DNSSEC at your domain registar.

D.

Transfer ownership of the domain to a new registar.

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Questions 39

You are migrating a three-tier application architecture from on-premises to Google Cloud. As a first step in the migration, you want to create a new Virtual Private Cloud (VPC) with an external HTTP(S) load balancer. This load balancer will forward traffic back to the on-premises compute resources that run the presentation tier. You need to stop malicious traffic from entering your VPC and consuming resources at the edge, so you must configure this policy to filter IP addresses and stop cross-site scripting (XSS) attacks. What should you do?

Options:

A.

Create a Google Cloud Armor policy, and apply it to a backend service that uses an unmanaged instance group backend.

B.

Create a hierarchical firewall ruleset, and apply it to the VPC's parent organization resource node.

C.

Create a Google Cloud Armor policy, and apply it to a backend service that uses an internet network endpoint group (NEG) backend.

D.

Create a VPC firewall ruleset, and apply it to all instances in unmanaged instance groups.

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Questions 40

Your company has defined a resource hierarchy that includes a parent folder with subfolders for each department. Each department defines their respective project and VPC in the assigned folder and has the appropriate permissions to create Google Cloud firewall rules. The VPCs should not allow traffic to flow between them. You need to block all traffic from any source, including other VPCs, and delegate only the intra-VPC firewall rules to the respective departments. What should you do?

Options:

A.

Create a VPC firewall rule in each VPC to block traffic from any source, with priority 0.

B.

Create a VPC firewall rule in each VPC to block traffic from any source, with priority 1000.

C.

Create two hierarchical firewall policies per department's folder with two rules in each: a high-priority rule that matches traffic from the private CIDRs assigned to the respective VPC and sets the action to allow, and another lower-priority rule that blocks traffic from any other source.

D.

Create two hierarchical firewall policies per department's folder with two rules in each: a high-priority rule that matches traffic from the private CIDRs assigned to the respective VPC and sets the action to goto_next, and another lower-priority rule that blocks traffic from any other source.

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Questions 41

Your end users are located in close proximity to us-east1 and europe-west1. Their workloads need to communicate with each other. You want to minimize cost and increase network efficiency.

How should you design this topology?

Options:

A.

Create 2 VPCs, each with their own regions and individual subnets. Create 2 VPN gateways to establish connectivity between these regions.

B.

Create 2 VPCs, each with their own region and individual subnets. Use external IP addresses on the instances to establish connectivity between these regions.

C.

Create 1 VPC with 2 regional subnets. Create a global load balancer to establish connectivity between the regions.

D.

Create 1 VPC with 2 regional subnets. Deploy workloads in these subnets and have them communicate using private RFC1918 IP addresses.

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Questions 42

You are configuring your Google Cloud environment to connect to your on-premises network. Your configuration must be able to reach Cloud Storage APIs and your Google Kubernetes Engine nodes across your private Cloud Interconnect network. You have already configured a Cloud Router with your Interconnect VLAN attachments. You now need to set up the appropriate router advertisement configuration on the Cloud Router. What should you do?

Options:

A.

Configure the route advertisement to the default setting.

B.

On the on-premises router, configure a static route for the storage API virtual IP address which points to the Cloud Router's link-local IP address.

C.

Configure the route advertisement to the custom setting, and manually add prefix 199.36.153.8/30 to the list of advertisements. Leave all other options as their default settings.

D.

Configure the route advertisement to the custom setting, and manually add prefix 199.36.153.8/30 to the list of advertisements. Advertise all visible subnets to the Cloud Router.

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Questions 43

You are configuring an HA VPN connection between your Virtual Private Cloud (VPC) and on-premises network. The VPN gateway is named VPN_GATEWAY_1. You need to restrict VPN tunnels created in the project to only connect to your on-premises VPN public IP address: 203.0.113.1/32. What should you do?

Options:

A.

Configure a firewall rule accepting 203.0.113.1/32, and set a target tag equal to VPN_GATEWAY_1.

B.

Configure the Resource Manager constraint constraints/compute.restrictVpnPeerIPs to use an allowList consisting of only the 203.0.113.1/32 address.

C.

Configure a Google Cloud Armor security policy, and create a policy rule to allow 203.0.113.1/32.

D.

Configure an access control list on the peer VPN gateway to deny all traffic except 203.0.113.1/32, and attach it to the primary external interface.

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Questions 44

You need to configure a static route to an on-premises resource behind a Cloud VPN gateway that is configured for policy-based routing using the gcloud command.

Which next hop should you choose?

Options:

A.

The default internet gateway

B.

The IP address of the Cloud VPN gateway

C.

The name and region of the Cloud VPN tunnel

D.

The IP address of the instance on the remote side of the VPN tunnel

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Questions 45

You deployed a hub-and-spoke architecture in your Google Cloud environment that uses VPC Network Peering to connect the spokes to the hub. For security reasons, you deployed a private Google Kubernetes Engine (GKE) cluster in one of the spoke projects with a private endpoint for the control plane. You configured authorized networks to be the subnet range where the GKE nodes are deployed. When you attempt to reach the GKE control plane from a different spoke project, you cannot access it. You need to allow access to the GKE control plane from the other spoke projects. What should you do?

Options:

A.

Add a firewall rule that allows port 443 from the other spoke projects.

B.

Enable Private Google Access on the subnet where the GKE nodes are deployed.

C.

Configure the authorized networks to be the subnet ranges of the other spoke projects.

D.

Deploy a proxy in the spoke project where the GKE nodes are deployed and connect to the control plane through the proxy.

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Questions 46

You want to apply a new Cloud Armor policy to an application that is deployed in Google Kubernetes Engine (GKE). You want to find out which target to use for your Cloud Armor policy.

Which GKE resource should you use?

Options:

A.

GKE Node

B.

GKE Pod

C.

GKE Cluster

D.

GKE Ingress

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Questions 47

You want to establish a dedicated connection to Google that can access Cloud SQL via a public IP address and that does not require a third-party service provider.

Which connection type should you choose?

Options:

A.

Carrier Peering

B.

Direct Peering

C.

Dedicated Interconnect

D.

Partner Interconnect

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Questions 48

You are responsible for designing a new connectivity solution for your organization's enterprise network to access and use Google Workspace. You have an existing Shared VPC with Compute Engine instances in us-west1. Currently, you access Google Workspace via your service provider's internet access. You want to set up a direct connection between your network and Google. What should you do?

Options:

A.

Order a Dedicated Interconnect connection in the same metropolitan area. Create a VLAN attachment, a Cloud Router in us-west1, and a Border Gateway Protocol (BGP) session between your Cloud Router and your router.

B.

Order a Direct Peering connection in the same metropolitan area. Configure a Border Gateway Protocol (BGP) session between Google and your router.

C.

Configure HA VPN in us-west1. Configure a Border Gateway Protocol (BGP) session between your Cloud Router and your on-premises data center.

D.

Order a Carrier Peering connection in the same metropolitan area. Configure a Border Gateway Protocol (BGP) session between Google and your router.

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Questions 49

Your company is running out of network capacity to run a critical application in the on-premises data center. You want to migrate the application to GCP. You also want to ensure that the Security team does not lose their ability to monitor traffic to and from Compute Engine instances.

Which two products should you incorporate into the solution? (Choose two.)

Options:

A.

VPC flow logs

B.

Firewall logs

C.

Cloud Audit logs

D.

Stackdriver Trace

E.

Compute Engine instance system logs

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Questions 50

Question:

Your organization is deploying a mission-critical application with components in different regions due to strict compliance requirements. There are latency issues between different applications that reside in us-central1 and us-east4. The application team suspects the Google Cloud network as the source of the excessive latency despite using the Premium Network Service Tier. You need to use Google-recommended practices with the least amount of effort to verify the inter-region latency by investigating network performance. What should you do?

Options:

A.

Set up the Performance Dashboard in Network Intelligence Center. Select the traffic type (cross-zonal), the metric (latency - RTT), the time period, the desired regions (us-central1 and us-east4), and the network tier.

B.

Enable VPC Flow Logs for the VPC. Identify major bottlenecks from the application level using Flow Analyzer.

C.

Configure two Linux VMs in each zone for each region. Install the application, and run a load test using each zone from different regions.

D.

Configure a VM with a probe in Network Intelligence Center in each zone for each region. Choose the traffic type (cross-zonal), metric (latency - RTT), desired regions (us-central1 and us-east4), and the network tier.

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Questions 51

Your company has a security team that manages firewalls and SSL certificates. It also has a networking team that manages the networking resources. The networking team needs to be able to read firewall rules, but should not be able to create, modify, or delete them.

How should you set up permissions for the networking team?

Options:

A.

Assign members of the networking team the compute.networkUser role.

B.

Assign members of the networking team the compute.networkAdmin role.

C.

Assign members of the networking team a custom role with only the compute.networks.* and the compute.firewalls.list permissions.

D.

Assign members of the networking team the compute.networkViewer role, and add the compute.networks.use permission.

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Questions 52

You have the following Shared VPC design VPC Flow Logs is configured for Subnet-1 In the host VPC. You also want to monitor flow logs for Subnet-2. What should you do?

Options:

A.

Configure a firewall rule to permit Subnet-2 IP addresses outbound in the host protect VPC.

B.

Configure Packet Mirroring in both the host and service project VPCs.

C.

Configure a VPC Flow Logs filter for Subnet-2 in the host project VPC.

D.

Configure VPC Flow Logs in the service project VPC for Subnet-2.

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Questions 53

You are troubleshooting connectivity issues between Google Cloud and a public SaaS provider. Connectivity between the two environments is through the public internet. Your users are reporting intermittent connection errors when using TCP to connect; however, ICMP tests show no failures. According to users, errors occur around the same time every day. You want to troubleshoot and gather information by using Google Cloud tools that are most likely to provide insights into what is occurring within Google Cloud. What should you do?

Options:

A.

Enable the Firewall Insights API. Set the deny rule insights observation period to one day. Review the insights to assure there are no firewall rules denying traffic.

B.

Enable and review Cloud Logging on your Cloud NAT gateway. Look for logs with errors matching the destination IP address of the public SaaS provider.

C.

Create a Connectivity Test by using TCP, the source IP address of your test VM, and the destination IP address of the public SaaS provider. Review the live data plane analysis and take the next steps based on the test results.

D.

Enable and review Cloud Logging for Cloud Armor. Look for logs with errors matching the destination IP address of the public SaaS provider.

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Questions 54

Question:

You are designing the architecture for your organization so that clients can connect to certain Google APIs. Your plan must include a way to connect to Cloud Storage and BigQuery. You also need to ensure the traffic does not traverse the internet. You want your solution to be cloud-first and require the least amount of configuration steps. What should you do?

Options:

A.

Configure Private Google Access on the VPC resource. Create a default route to the internet.

B.

Configure Private Google Access on the subnet resource. Create a default route to the internet.

C.

Configure Cloud NAT and remove the default route to the internet.

D.

Configure a global Secure Web Proxy and remove the default route to the internet.

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Questions 55

You have ordered Dedicated Interconnect in the GCP Console and need to give the Letter of Authorization/Connecting Facility Assignment (LOA-CFA) to your cross-connect provider to complete the physical connection.

Which two actions can accomplish this? (Choose two.)

Options:

A.

Open a Cloud Support ticket under the Cloud Interconnect category.

B.

Download the LOA-CFA from the Hybrid Connectivity section of the GCP Console.

C.

Run gcloud compute interconnects describe .

D.

Check the email for the account of the NOC contact that you specified during the ordering process.

E.

Contact your cross-connect provider and inform them that Google automatically sent the LOA/CFA to them via email, and to complete the connection.

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Questions 56

You need to define an address plan for a future new Google Kubernetes Engine (GKE) cluster in your Virtual Private Cloud (VPC). This will be a VPC-native cluster, and the default Pod IP range allocation will be used. You must pre-provision all the needed VPC subnets and their respective IP address ranges before cluster creation. The cluster will initially have a single node, but it will be scaled to a maximum of three nodes if necessary. You want to allocate the minimum number of Pod IP addresses. Which subnet mask should you use for the Pod IP address range?

Options:

A.

/21

B.

/22

C.

/23

D.

/25

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Questions 57

Your company's logo is published as an image file across multiple websites that are hosted by your company You have implemented Cloud CDN, however, you want to improve the performance of the cache hit ratio associated with this image file. What should you do?

Options:

A.

Configure custom cache keys for the backend service that holds the image file, and clear the Host and Protocol checkboxes-

B.

Configure Cloud Storage as a custom origin backend to host the image file, and select multi-region as the location type

C.

Configure versioned IJRLs for each domain to serve users the •mage file before the cache entry expires

D.

Configure the default time to live (TTL) as O for the image file.

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Questions 58

You want to use Partner Interconnect to connect your on-premises network with your VPC. You already have an Interconnect partner.

What should you first?

Options:

A.

Log in to your partner’s portal and request the VLAN attachment there.

B.

Ask your Interconnect partner to provision a physical connection to Google.

C.

Create a Partner Interconnect type VLAN attachment in the GCP Console and retrieve the pairing key.

D.

Run gcloud compute interconnect attachments partner update / -- region --admin-enabled.

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Questions 59

You converted an auto mode VPC network to custom mode. Since the conversion, some of your Cloud Deployment Manager templates are no longer working. You want to resolve the problem.

What should you do?

Options:

A.

Apply an additional IAM role to the Google API’s service account to allow custom mode networks.

B.

Update the VPC firewall to allow the Cloud Deployment Manager to access the custom mode networks.

C.

Explicitly reference the custom mode networks in the Cloud Armor whitelist.

D.

Explicitly reference the custom mode networks in the Deployment Manager templates.

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Questions 60

You are responsible for configuring firewall policies for your company in Google Cloud. Your security team has a strict set of requirements that must be met to configure firewall rules.

Always allow Secure Shell (SSH) from your corporate IP address.

Restrict SSH access from all other IP addresses.

There are multiple projects and VPCs in your Google Cloud organization. You need to ensure that other VPC firewall rules cannot bypass the security team’s requirements. What should you do?

Options:

A.

Configure a hierarchical firewall policy to the organization node to allow TCP port 22 for your corporate IP address with priority 0.

Configure a hierarchical firewall policy to the organization node to deny TCP port 22 for all IP addresses with priority 1.

B.

Configure a VPC firewall rule to allow TCP port 22 for your corporate IP address with priority 0.

Configure a VPC firewall rule to deny TCP port 22 for all IP addresses with priority 1.

C.

Configure a VPC firewall rule to allow TCP port 22 for your corporate IP address with priority 1.

Configure a VPC firewall rule to deny TCP port 22 for all IP addresses with priority 0.

D.

Configure a hierarchical firewall policy to the organization node to allow TCP port 22 for your corporate IP address with priority 1

Configure a hierarchical firewall policy to the organization node to deny TCP port 22 for all IP addresses with priority 0.

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Questions 61

You recently deployed your application in Google Cloud. You need to verify your Google Cloud network configuration before deploying your on-premises workloads. You want to confirm that your Google Cloud network configuration allows traffic to flow from your cloud resources to your on- premises network. This validation should also analyze and diagnose potential failure points in your Google Cloud network configurations without sending any data plane test traffic. What should you do?

Options:

A.

Use Network Intelligence Center's Connectivity Tests.

B.

Enable Packet Mirroring on your application and send test traffic.

C.

Use Network Intelligence Center's Network Topology visualizations.

D.

Enable VPC Flow Logs and send test traffic.

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Questions 62

You have a storage bucket that contains two objects. Cloud CDN is enabled on the bucket, and both objects have been successfully cached. Now you want to make sure that one of the two objects will not be cached anymore, and will always be served to the internet directly from the origin.

What should you do?

Options:

A.

Ensure that the object you don’t want to be cached anymore is not shared publicly.

B.

Create a new storage bucket, and move the object you don’t want to be checked anymore inside it. Then edit the bucket setting and enable the private attribute.

C.

Add an appropriate lifecycle rule on the storage bucket containing the two objects.

D.

Add a Cache-Control entry with value private to the metadata of the object you don’t want to be cached anymore. Invalidate all the previously cached copies.

Questions 63

You work for a university that is migrating to GCP.

These are the cloud requirements:

• On-premises connectivity with 10 Gbps

• Lowest latency access to the cloud

• Centralized Networking Administration Team

New departments are asking for on-premises connectivity to their projects. You want to deploy the most cost-efficient interconnect solution for connecting the campus to Google Cloud.

What should you do?

Options:

A.

Use Shared VPC, and deploy the VLAN attachments and Interconnect in the host project.

B.

Use Shared VPC, and deploy the VLAN attachments in the service projects. Connect the VLAN attachment to the Shared VPC's host project.

C.

Use standalone projects, and deploy the VLAN attachments in the individual projects. Connect the VLAN attachment to the standalone projects' Interconnects.

D.

Use standalone projects and deploy the VLAN attachments and Interconnects in each of the individual projects.

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Exam Name: Google Cloud Certified - Professional Cloud Network Engineer
Last Update: Nov 21, 2024
Questions: 215

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