H12-222 Huawei Certified Network Professional-R&S-IENP Questions and Answers

initialized

openrec

operational

non-existent

After NAFT translation, all packets are from the same IP address for external users.

In No-PAT mode, only the transport layer protocol port number can be converted.

In NAFT mode, only the network layer protocol address can be converted.

In No-PAT mode, the network layer protocol address can be converted.

Destination IP address

Destination port number

Protocol number

Source IP address

Free Mobility

Service Chain

Access Control

United Security

Ubiquitous Resources

TRUE

FALSE

VRRP

OSPF

BGP

Static route

Trusted zone -> Untrusted zone

Untrusted zone -> Trusted zone

Untrusted zone -> DMZ

Trusted zone -> Local zone

The traditional IP forwarding is connection-oriented and has low efficiency.

On a traditional IP network, optimal paths are calculated based on the IGP metrics.

All the routers on a traditional IP network need to know routes on the entire network or default routes.

Traditional IP forwarding uses hop-by-hop forwarding.

A traditional IP network cannot provide a good QoS guarantee.

TRUE

FALSE

After a static LSP is established, each node on the LSP can detect the entire LSP.

When MPLS is enabled on the outbound interface of the ingress node and the physical status and the protocol status of the outbound interface are Up, the static LSP is Up regardless of whether there is an egress node or a transit node.

The transit node of a static LSP is configured and MPLS is enabled on both the inbound and outbound interfaces. If the physical status and the protocol status of the inbound and outbound interfaces are Up, the static LSP is Up.

The egress node of the static LSP is configured and MPLS is enabled on the inbound interface. If the physical status and the protocol status of the inbound interface are Up, the static LSP is Up regardless of whether there is an ingress node or a transit node.

The RD is encapsulated into the Update packet as the BGP extended attribute.

After receiving IPv4 routes from a CE, a PE adds RDs to them to convert them to globally unique VPN-IPv4 routes and advertises the routes on the public network.

Each VPN instance on a PE corresponds to a RD value. The RD on the same PE must be globally unique.

The RD can be used to control advertisement of VPN routing information.

Network infrastructure virtualization

Network function virtualization

Network bus virtualization

Network architecture virtualization

The jitter is relevant to the delay.

The jitter occurs because the E2E delays of data packets in the different flow are different.

A long delay indicates a short jitter and a short delay indicates a large jitter.

Jitter is independent of delay.

The first 6 bits of the ToS field (leftmost 6 bits) mark different types of services, namely, DSCP priority.

The DSCP priority can be used to classify traffic into 32 types.

Each DSCP priority corresponds to a Behavior Aggregate (BA), and a PHB can be specified for each BA.

You can use some QoS mechanisms to implement PHB.

TRUE

FALSE

TRUE

FALSE

TRUE

FALSE

TRUE

FALSE

Configure the trusted or untrusted interface.

Limit the maximum number of MAC addresses that can be learned on a switch interface.

Configure DHCP snooping to check the CHADDR field carried in a DHCP Request packet.

Configure association between DHCP snooping and IPSG or DAI on the switch.

Local port mirroring

Remote port mirroring

Global mirroring

Flow mirroring

TRUE

FALSE

TRUE

FALSE

Signaling is required. Before transmitting packets, an application does not need to notify a router and the network does not need to maintain the status for each flow.

Different methods can be used to specify QoS of packets, for example, IP precedence, source IP address, and destination IP address of IP packets.

The DiffServ model provides the E2E QoS guarantee for important applications.

It can be implemented through technologies such as CAR or queue scheduling technologies.

TRUE

FALSE

The configuration is correct.

The MPLS LSR IDs of the two devices must be different.

MPLS does not need to be enabled globally.

MPLS does not need to be enabled on interfaces.

Faults cannot occur frequently.

Faults can be recovered rapidly.

No fault occurs.

When faults occur, services can be only restored manually.

Common IP forwarding

ATM forwarding

Multi-label MPLS forwarding

Single-label MPLS forwarding

Discovery message

Session message

Advertisement message

Notification message

Liberal

Independent

Conservative

Ordered

TRUE

FALSE

DSCP priority, IP precedence, 802.1p priority, and EXP priority

Source and destination addresses, and EXP priority

MAC address

Any packet information

DHCP NAK

DHCP Request

DHCP Discover

DHCP Release

RED

WRED

Tail drop

WFQ

Multiple users can be created for network management.

Users may be asked to log in to eSight from specified IP addresses in specific time ranges.

The administrator can force unauthorized login users to log out.

The login time of the administrator role also can be limited.

Configure the DHCP server group name.

Configure IP addresses of DHCP servers in the DHCP server group.

Configure the number and IP address of the interface enabled with the DHCP relay function.

Configure the Option 82 field.

Resource scheduling

Resource monitoring

Resource reclaiming

Troubleshooting

Global TCP synchronization

High jitter and long delay

High cost

Packets are discarded without differentiating the priority

They must be different.

They must be the same.

They may be the same.

The Agile Controller uniformly deploys permission policies for controlling server access from personnel in each department. The administrator needs to focus on access permissions between departments. A key device in the campus can function as the policy execution point. After the deployment is complete, users can obtain access permissions no matter where they are and what access mode is used.

Policies are deployed automatically to control access between outsourcing personnel and

employees by policies and IP addresses, while ensuring correct the network access permissions of each user. It can also control data sharing among team members to guarantee enterprise data security.

When gateway resources are limited, automatic gateway selection and preferential forwarding of packets from VIP users guarantee fine network experience of VIP users.

The Agile Controller can automatically identify office requirements of working staff, without the need for manual configurations. Users can obtain network access permissions anytime, anywhere.

TRUE

FALSE