QUESTION 64
The Discovery message of LDP is used for neighbor discovery, and LDP has different discovery mechanisms when discovering neighbors. Which of the following statements about the Discovery message in the basic discovery mechanism is correct? (Multiple choice)

QUESTION 65
An engineer uses two routers to test IPV6 services, and simulates the interconnection between the headquarters and branches by running BGP4+.

The logical topology of the network is shown in the figure. Regarding the transmission of IPv6 routes between the two-way devices, which of the following statements is false?

QUESTION 66
According to this figure, it can be known that in VLAN 300, on 2020-06-04, from 17:22:38 to 17:22:44, how many MAC flaps does the 00e0-fc3d-3bdb have?

QUESTION 67
According to this figure, we can judge:

QUESTION 68
In the test phase of the cutover, the criteria for indicating that the test has been completed are:

QUESTION 69
Which of the following aspects should be considered in the cutover risk assessment? (Multiple choice)

QUESTION 70
When the device is used as an SSH server, a local key pair must be configured.

QUESTION 71
All routers run OSPF as shown.

Which of the following statements is correct?

QUESTION 72
Deploying port isolation technology in Ethernet can realize Layer 2 intercommunication and Layer 3 isolation, making networking more flexible.

QUESTION 73
When troubleshooting the EBGP neighbor relationship, you find that the two directly connected devices use the loopback port to establish a connection, so execute display current-configuration configuration bgp to check the configuration of peer ebgp-max-hophop-count. Which of the following statements is correct?

QUESTION 74
A router’s Network LSA is shown in the figure. Which of the following statements are correct? (Multiple choice)

QUESTION 75
Sort by the cutover execution steps.

QUESTION 76
As shown below:

QUESTION 77
Ethernet is a network that supports broadcasting. Once there is a loop in the network, this simple factory broadcasting mechanism will cause catastrophic consequences. Which of the following phenomena may be caused by loops? (Multiple choice)

QUESTION 78
BFD determines whether a fault occurs by periodically detecting packets, and is a fast fault detection mechanism that relies on routing protocols.

QUESTION 79
Which of the following WAN links are part of a packet switched network? (Multiple choice)

QUESTION 80
By executing the command ( ), users on different ports in the same VLAN can be completely isolated at Layer 2 and Layer 3 and cannot communicate. (Please use English lowercase letters to complete the command, and the command cannot be abbreviated)

QUESTION 81
Which of the following actions may affect the normal operation of the customer’s network? (Multiple choice)

QUESTION 82
In an MPLS network, SRs running the DP protocol exchange LDP messages to implement functions such as neighbor discovery, session establishment and maintenance, and label management. To ensure the reliability of message delivery, all LDP messages are sent and received based on TCP connections.

QUESTION 83
As shown in the figure, OSPF is enabled on all interfaces of the router, where R4 and R5 can establish OSPF virtual connections.

QUESTION 84
Which of the following description of TTL in MPLS Header is correct?

QUESTION 85
In the process of establishing an LDP session, the active party will first send Initialization information to negotiate parameters. If the passive party does not accept the negotiated parameters, it will send:

QUESTION 86
According to the reference information of classification rules, what are the classifications of traffic? (Multiple choice)

QUESTION 87
As shown in the figure, on the R1 router, network administrator A can control the path of traffic entering AS100 after modifying the MED value of the routing entry sent to R2 through the routing policy.