QUESTION 41
On an enterprise network shown in the figure, if CE2 is dual-homed to PE2 and PE3, a routing loop may occur during the exchange of Type 5 LSAs. To prevent the loop, the route-tag command can be run on PE2 and PE3. In this way, if the route tag of the route received by PE3 is the same as that configured locally, the route is ignored.

A. TRUE

B. FALSE

Correct Answer: B
QUESTION 42
If end-to-end QoS is configured on an MPLS network, the penultimate hop device on the MPLS network can pop MPLS labels from packets based on penultimate hop popping (PHP), so that the egress node can process packets based on the QoS priority in inner packets.

A. TRUE
B. FALSE

Correct Answer: B
QUESTION 43
For high reliability purposes, the following LDP messages are transmitted through TCP: discovery messages, session messages, advertisement messages, and notification messages.

A. TRUE
B. FALSE

Correct Answer: B
QUESTION 44
In the scenario shown in the figure, if you want to use backdoor link as a backup link, you can use the sham link function. Which of the following statements are false about the sham link?

A. To establish a sham link, an administrator needs to run the sham-link command in the area view of the common OSPF process on a PE.
B. When configuring a sham link, an administrator needs to specify the source and destination IP addresses of the link.

C. A sham link is equivalent to an OSPF intra-area link between two PEs and ensures that VPN traffic preferentially passes through the backdoor link.
D. After a sham link is established, the LSAs flooded on the sham link are translated into Type 3 LSAs.

Correct Answer: ACD
QUESTION 45
LDP sessions have been established between three devices on an MPLS network. Which of the following operations will cause the local LDP session to be re-established?

A. Configure PHP.
B. Specify the TTL mode for MPLS.
C. Change the LDP transport address.
D. Change the label advertisement mode.

Correct Answer: CD
QUESTION 46
The figure shows information about VPN1 on a PE on a BGP/MPLS IP VPN network. When the VPNv4 route corresponding to VPN1 is advertised to the remote PE, which VPNs of the remote PE will accept the route?

A. VPN2: Import RT=200:1, 400:1
B. VPN3: Import RT=100:1, 300:1
C. VPN1: Import RT=100:1
D. VPN4: Import RT=500:1

Correct Answer: ABC
QUESTION 47
On an MPLS network, if the penultimate LSR receives a packet carrying a label with the value                 ，it pops the label and forwards the packet to the last hop. (Enter only digits.)

Correct Answer: 3
QUESTION 48
A device generates various messages when exceptions or faults occur. The severity level of messages shows how severe a problem is. There are eight severity levels. Which of the following is the highest severity level?

A. Informational
B. Debugging
C. Warning
D. Notification

Correct Answer: C
QUESTION 49
On the network shown in the figure, R1 and R2 use directly connected interfaces to establish a BGP peer relationship. The debugging information shown in the figure is displayed on R2. Drag the values on the left to the corresponding descriptions on the right.

Select and Place:

Correct Answer:

QUESTION 50
Which of the following information can be checked by both observing device indicators and using commands?

A. Software version
B. Card running status
C. Size of the storage space
D. Link connectivity

Correct Answer: BD
QUESTION 51
A network engineer uses the packet capture function to obtain packets received by an Interface. The figure shows part of the packet information. Which protocol does the packet belong to?

A. OSPF
B. LLDP
C. BGP
D. LACP

Correct Answer: A
QUESTION 52
A network engineer provides a troubleshooting report after rectifying a fault. The actual network is simplified into the one shown in the figure, where R1 and R2 both have OSPF enabled, and function as the gateways of PC1 and PC2, respectively. Given this, which of the following statements are true?

A. R1 can ping 192.168.1.22.
B. PC1 and PC2 cannot ping each other.
C. R2 can ping 192.168.1.2.
D. R1 can ping 192.168.1.21.

Correct Answer: ACD
QUESTION 53
If a network engineer forgets the console port password of a Huawei NetEngine AR router during troubleshooting, the network engineer can configure the router in BootROM mode to start without the console port password.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 54
On the network shown in the figure, a network engineer finds that the path between PC1 and PC2 is not the optimal path and all links along the path have the same cost. Given this, which of the following is true about the priorities of the switches?

A. SW1: 32768; SW2: 0; SW3: 4096; SW4: 8192
B. SW1: 32768; SW2: 4096; SW3: 0; SW4: 8192
C. SW1: 32768; SW2: 12288; SW3: 4096; SW4: 8192
D. SW1: 0; SW2: 32768; SW3: 8192; SW4: 4096

Correct Answer: D
QUESTION 55

When handling a fault on the live network, a network engineer draws topology shown in the figure, where all routers run OSPF. Which of the following shows the correct access paths between PC1 and PC2?

A. PC1-to-PC2 path: PC1 -> R1-> R3-> R2-> PC2; PC2-to-PC1 path: PC2 -> R2-> R1 -> PC1
B. PC1-to-PC2 path: PC1 -> R1 -> R3 -> R2-> PC2; PC2-to-PC1 path: PC2 -> R2 -> R3-> R1 -> PC1
C. PC1-to-PC2 path: PC1 -> R1 -> R2 -> PC2; PC2-to-PC1 path: PC2 -> R2 -> R1 -> PC1
D. PC1-to-PC2 path: PC1-> R1 -> R2-> PC2; PC2-to-PC1 path: PC2 -> R2 -> R3 -> R1 -> PC1

Correct Answer: C
QUESTION 56
During an attempt to log in to a NetEngine AR6120 through the console port, the network engineer finds that the password is incorrect and the login fails. If a Telnet account can be used to log in to the device and the account has the permission to change the console port password, the network engineer can log in to the device through Telnet to change the console port password.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 57
On the network shown in the figure, the DHCP server function is enabled on GE0/0/0 of R2, and the address pool is a global address pool. When GE0/0/0 and GE0/0/1 of R1 function as DHCP clients, only one interface can obtain an IP address by default.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 58
With the increase of its service traffic, an enterprise needs to expand the transmission bandwidth of its backbone network. Which of the following methods can best meet this requirement?

A. Adding a high-performance forwarding switch, to which the originally directly connected ports on the backbone network are connected
B. Modifying the routing protocol related to the network layer and changing the number of load-balancing paths of the routing protocol to the maximum value
C. Adding links between backbone network devices and configuring link aggregation for them
D. Increasing the number of tunnels between backbone network devices and enabling HSB protection for these tunnels

Correct Answer: B
QUESTION 59
A network engineer enters dir on the device to obtain the following file names. Which is most likely to be the version file of the device?

A. V300R022C00SPC100.cc
B. V300R022C00SPC100.cfg
C. startup_v1.rdb

D. Ca.cer

Correct Answer: A
QUESTION 60
If technology migration on the network affects the services running on the live network, strictly follow the preset operation process and risk control measures during the implementation of the technology migration project. Generally, this type of project is defined as a migration project. Which of the following operations performed on the live network belongs to a non-migration project?

A. Changing the levels of IS-IS Level-1-2 routers to Level1 in batches
B. Changing the mode of importing routes to BGP from network mode to import mode in batches
C. Changing the area type of some OSPF routers to the stub area in batches
D. Modifying the description of router interfaces in batches

Correct Answer: D