1Y0-241 Deploy and Manage Citrix ADC with Traffic Management Questions and Answers

Correct Answer: B. Two-arm

Short Explanation with reference:

A two-arm deployment is a common scenario where the Citrix ADC appliance has two network interfaces, one connected to the DMZ network and the other connected to the internal network1. This allows the appliance to act as a gateway between the two networks and provide load balancing, security, and optimization features for the applications hosted on the internal servers2. A two-arm deployment also provides better isolation and protection for the internal network than a one-arm deployment, where the appliance has only one network interface connected to a switch or router that spans both networks3. A transparent mode is a packet forwarding mode that enables the appliance to act as a Layer 2 device and bridge packets that are not destined for it4. A forward proxy mode is a feature that enables the appliance to act as an intermediary between clients and servers on the internet, caching web content and applying policies. Neither of these modes are relevant for the scenario described in the question.

1: Citrix ADC at a Glance 2: Tech Paper: Best practices for NetScaler ADC Deployments 3: Configure a Citrix ADC BLX appliance with a network mode 4: Packet forwarding modes | NetScaler 14.1 : Configuring Forward Proxy | NetScaler 14.1

"Once default SSL Profiles are enabled, you cannot disable the default SSL Profiles."

https://docs.citrix.com/en-us/citrix-adc/current-release/global-server-load-balancing/how-to/configure-gslb-content-switch.html

https://developer-docs.citrix.com/projects/citrix-adc-advanced-policy-expression-reference/en/latest/

Correct Answer: C. CLIENT and D. DNS

Short Explanation with reference:

When creating advanced policies, you can use the following expression prefixes: HTTP, SYS, CLIENT, SERVER, DNS, DATE, TIME, and URL1. TCP and IP are not valid prefixes for advanced policies2. SQL is not a supported feature for advanced policies3.

1: Summary examples of advanced policy expressions and policies - NetScaler 2: Configure advanced policy infrastructure | AppExpert - NetScaler 3: Shift your gears to Advanced policy infrastructure in Citrix ADC

Correct Answer: C. POL_14

Short Explanation with reference:

The Citrix ADC appliance evaluates the rewrite policies in the order of their priority, from lowest to highest. The priority is a numerical value that indicates the relative importance of the policy. The lower the priority, the higher the importance. The gotoPriorityExpression is an expression that specifies the next policy to evaluate after the current policy is hit. The expression can be either a priority value or the keyword END, which indicates that no further policies are evaluated. Therefore, in this scenario, the policy evaluation order is as follows:

• POL_12 is hit first, as it has the lowest priority (90). It has a gotoPriorityExpression of NEXT, which means that the next policy in priority order is evaluated.
• POL_15 is evaluated next, as it has the next lowest priority (100). It has a gotoPriorityExpression of END, which means that no further policies are evaluated.
• POL_13 and POL_14 are not evaluated, as they have higher priorities (101 and 120) than POL_15, and POL_15 has a gotoPriorityExpression of END.

Therefore, the correct answer is C. POL_14, as it is the policy that is evaluated last, considering POL_12 is hit first.

Configuring rewrite policies | NetScaler : Policy binding and evaluation | NetScaler 14.1

Correct Answer: D. Purchase a Citrix ADC SDX appliance, and configure a Citrix ADC instance for each

Short Explanation with reference:

A Citrix ADC SDX appliance is a multi-tenant platform that allows the Citrix Administrator to create and manage multiple Citrix ADC instances on a single hardware device. Each instance is isolated and dedicated to a specific tenant or application, and can have its own resources, configuration, and features. A Citrix ADC SDX appliance can support up to 80 instances, depending on the model and license. A Citrix ADC SDX appliance can also provide high performance and scalability, as it can deliver up to 100 Gbps of throughput.

Therefore, to meet the needs of the newly acquired companies, the administrator can purchase a Citrix ADC SDX appliance, and configure a Citrix ADC instance for each company. This will give each company its own Citrix ADC for VPN access load balancing, and a minimum of 20 Gbps of throughput, as well as other benefits such as security, optimization, and availability.

Citrix ADC SDX data sheet : Citrix ADC SDX at a glance

https://docs.citrix.com/en-us/citrix-adc/current-release/load-balancing/load-balancing-customizing-algorithms/leastbandwidth-method.html

https://support.citrix.com/article/CTX108946/how-to-configure-redirect-url-on-adc-virtual-server-when-virtual-server-is-not-available

https://support.citrix.com/article/CTX236336/ns-105how-to-configure-snmp-trap-for-servicegroupentity-state-change

Correct Answer: A. MAC-based forwarding (MBF)

Short Explanation with reference:

MAC-based forwarding (MBF) is a mode on a Citrix ADC that can be used to avoid asymmetrical packet flows and multiple route/ARP lookups. MBF enables the Citrix ADC to forward packets based on the MAC address of the destination server, instead of the IP address. This way, the Citrix ADC does not need to perform routing or ARP resolution for each packet, which reduces the processing overhead and improves performance. MBF also ensures that the return traffic from the server follows the same path as the incoming traffic from the client, which avoids asymmetrical routing issues.

MBF can be enabled on a Citrix ADC by using the GUI or the CLI of the appliance. MBF can be applied to a specific service or a service group, or to all services on the appliance. MBF can also be used in conjunction with other features, such as direct server return (DSR) and link load balancing (LLB).

Therefore, option A is the correct answer.

References:

• [MAC-Based Forwarding]
• [Configuring MAC-Based Forwarding]
• [How to Configure MAC Based Forwarding on NetScaler Appliance]

https://docs.citrix.com/en-us/citrix-adc/current-release/ssl/ssl-profiles.html

https://developer-docs.citrix.com/projects/citrix-adc-command-reference/en/latest/ns/ns-acl/

Correct Answer: A. Admin partitions that use dedicated VLANs

Short Explanation with reference: Admin partitions are a feature of Citrix ADC that allow administrators to create multiple logical partitions on a single physical appliance. Each partition is independent and isolated from the others, and has its own configuration, resources, and management. This enables administrators to delegate administration tasks to different departments or customers, while maintaining security and operational consistency1. Admin partitions can use dedicated VLANs to isolate the network traffic of each partition from the others2. A SNIP in each partition, and bind a VLAN for the department (option B) is also a valid way to isolate network traffic, but it does not provide configuration and management isolation. Policy-based routes for each department in the nsroot partition (option C) and dedicated routes in the admin partitions for each department (option D) are not relevant for isolating department-level administration, as they are used for routing traffic based on policies or routes3. Therefore, the correct answer is A. Admin partitions that use dedicated VLANs.

Correct Answer: D. Session reuse

Short Explanation with reference:

Session reuse is a feature that allows the Citrix ADC appliance to reuse an existing SSL session between the client and the server, instead of creating a new one for each request1. This reduces the server load, improves response time, and increases the number of SSL transactions per second on an SSL vServer, as the session establishment process involves expensive cryptographic operations2. Session reuse is enabled by default on the Citrix ADC appliance, but it can be disabled or configured with different options1.

1: Configuring Session Reuse | NetScaler 2: Lightboard Lessons: SSL Transactions Per Second - DevCentral - F5, Inc.

https://docs.citrix.com/en-us/citrix-adc/current-release/networking/interfaces/configuring-link-aggregation.html

A sysadmin is lower than a superuser is terms of access allowed on the appliance. A sysadmin user can perform all Citrix ADC operations with the following exceptions: no access to the Citrix ADC shell, cannot perform user configurations, cannot perform partition configurations, and some other configurations as stated in the sysadmin command policy https://docs.citrix.com/en-us/citrix-adc/current-release/system/authentication-and-authorization-for-system-user/user-usergroups-command-policies.html

https://docs.citrix.com/en-us/citrix-adc/current-release/appexpert/http-callout/configuring-http-callouts.html

https://www.citrix.com/blogs/2014/12/29/netscaler-vlans-demystified/

https://support.citrix.com/article/CTX115575

Correct Answer: D. Virtual MAC

Short Explanation with reference:

Virtual MAC (VMAC) is a feature that allows the Citrix ADC appliance to use a common MAC address for both the primary and secondary units in a high availability (HA) pair1. This prevents the upstream router from having to update its ARP table when a failover occurs, as the MAC address of the active unit remains unchanged2. VMAC can be enabled or disabled by using the -vmac option in the CLI or by checking or unchecking the Enable VMAC check-box in the GUI1. Therefore, the correct answer is D. Virtual MAC.

1: Configuring VMACs | NetScaler 2: How to Set Up a High Availability Pair on ADC - Citrix Customer Support

https://docs.citrix.com/en-us/citrix-adc/current-release/appexpert/rate-limiting/configuring-binding-traffic-rate-policy1.html

https://discussions.citrix.com/topic/398863-netscaler-rate-limiting-policy/

Correct Answer: B. SDX

Short Explanation with reference: Citrix ADC SDX is a multi-tenant platform that allows multiple instances of Citrix ADC to run on a single physical appliance. Each instance is isolated from the others and has its own dedicated resources, configuration, and management. This enables service providers and enterprises to offer Citrix ADC as a service to their customers or internal departments, while maintaining security and operational consistency across any deployment12. Citrix ADC VPX, MPX, and CPX are single-tenant platforms that do not support multi-tenancy out of the box3.