Question 1

The virtual router uses a virtual MAC address but not the actual MAC address of the interface to respond to an ARP request.

Accepted Answer

Virtual routers use a virtual MAC address to ensure consistent network communication and failover capabilities, rather than relying on the physical MAC address of any single interface.

Question 2

Which of the following is not the BFD fault detection mode?

Accepted Answer

BFD (Bidirectional Forwarding Detection) does not have a "Peer mode." The modes are Asynchronous, Demand, and Echo.

Question 3

A router receives a data packet, with the destination address being 195.26.17.4. Which subnet is this address in?

Accepted Answer

The IP address 195.26.17.4 falls within the range of the subnet 195.26.16.0/20, which covers addresses from 195.26.16.0 to 195.26.31.255.

Question 4

The IP packet has a special field to mark the QoS. For example, the last 6 bits in the ToS field of an IPv4 packet mark the DSCP value.

Accepted Answer

The answer of The IP packet has a special field...

Question 5

The reliability of a product or a system is generally evaluated with the two indicators of Mean Time to Repair (MTTR) and Mean Time Between Failures (MTBF).

Accepted Answer

MTTR and MTBF are standard metrics used to evaluate the reliability and maintainability of a product or system, with MTTR indicating the average time to repair a failure and MTBF indicating the average time between failures.

Question 6

If both the ospf cost and bandwidth-reference commands are configured on an interface, the value set in the ospf cost command is used as the cost of the interface.

Accepted Answer

The OSPF cost command manually sets the cost of an interface, overriding the automatically calculated cost based on the bandwidth-reference command.

Question 7

Based on classification rules, traffic classification can be divided into which of the following types? (Choose two.)

Accepted Answer

The answer of Based on classification rules, traffic classification can...

Question 8

Which of the following statements about Stub areas is false?

Accepted Answer

Not any area can be configured as a Stub area; for example, the backbone area (Area 0) cannot be configured as a Stub area.

Question 9

The dynamic LACP requires devices at both ends to exchange protocol packets, while the static LACP does not require so.

Accepted Answer

The answer of The dynamic LACP requires devices at both...

Question 10

Which of the following statements about VRRP fast switchover are true? (Choose three.)

Accepted Answer

The answer of Which of the following statements about VRRP...

Question 11

In case of congestion, which of the following indexes will affect QoS? (Choose three.)

Accepted Answer

Transmission delay, transmission jitter, and packet loss ratio are all factors that can affect QoS in case of congestion. Transmission distance is not a factor that affects QoS.

Question 12

Which of the following statements are correct regarding VRRP?

Accepted Answer

The answer of Which of the following statements are correct...

Question 13

A broadcast and an NBMA network, each having two or more routers, must both have a DR and a BDR.

Accepted Answer

The answer of A broadcast and an NBMA network, each...

Question 14

Which of the following IP addresses are network addresses? (Choose two.)

Accepted Answer

The answer of Which of the following IP addresses are...

Question 15

What is the link ID of an ASBR-Summary-LSA?

Accepted Answer

The link ID of an ASBR-Summary-LSA is the Router ID of the destination ASBR. This LSA type is used to advertise external routes into an OSPF area, and the link ID identifies the ASBR that is the source of these external routes.

Question 16

Which of the following statements about the master router in a VRRP backup group are true? (Choose three.)

Accepted Answer

The master router in a VRRP group sends VRRP packets to indicate its status (A), uses a virtual MAC address to handle ARP requests for the virtual IP (B), and will change to Backup state if it receives a packet with a higher priority (D).

Question 17

Which of the following statements about the mVRRP backup group are true? (Choose three.)

Accepted Answer

The answer of Which of the following statements about the...

Question 18

BFD (a fast detection technology) enabled on a device quickly identifies a fault and reports the fault to the appropriate protocol module after detecting a master/slave switchover on the neighboring device. This causes the protocol module to quit the GR. As such, BFD and GR cannot be used together.

Accepted Answer

BFD (Bidirectional Forwarding Detection) and GR (Graceful Restart) can be used together. BFD provides rapid fault detection, while GR allows for a temporary disruption in control plane communication without affecting data plane forwarding. They complement each other by ensuring fast recovery and maintaining session continuity.

Question 19

A VRRP backup group is able to track the status of an interface. If the interface configured with a VRRP backup group fails or any interface on the router fails, the VRRP backup group provides a backup for the faulty interface.

Accepted Answer

The answer of A VRRP backup group is able to...

Question 20

Which of the following statements are true? (Choose three.)

Accepted Answer

The OSPF neighbor state machine transitions from Down to Init when a Hello packet is received. It transitions from Init to 2-Way when a bidirectional communication is established, and from Init to Exstart when the router becomes the DR or BDR.

Exam 5: HCNP-R&S Fast Track (Huawei Certified Network Professional - Routing & Switching Fast Track)