Q72. In order to prevent hackers from attacking user equipment or network through MAC address, the MAC address of untrusted users can be configured as black hole MAC address to filter out illegal MAC

Q73. SFFv2 is an IGP running on an IPv4 network: 0SPFV3 is an IGP running on an IPv6 network. Compared with 0SPFV2, SPFV3 has a similar LSA type, but has slightly different functions. Which of the following is not included in the LSA type of 0SPFV3?

Q74. Which of the following statements about LDP label retention-free way is correct? (Multiple choice)

Q75. Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEs interest

Q76. In an MPLS domain, LSR can be divided into Ingress LSR, Transit LSR and Egress LSR according to the way the LSR processes data. For the same FEC, a certain LSR can be the Ingress LSR of the FEC or the Transit LSR of the FEC.

Q77. In OSPF, ABR will convert all Type 7 LSAs in the NSSA area into Type 5 LSAs.

Q78. By default, the Domain ID of each OSPF process running on the router is the same as the process number of the process, which can be modified by the domain-id command under the process

Q79. Configuring DHCP Snooping can be used to prevent imitators from attacking. Which of the following steps should be included in the configuration process? (Multiple choice)

Q80. the configuration file of the device. Is the following statement D wrong?

Q81. In the process of daily troubleshooting, engineers may need to check some alarm information of the device.
Turn on the debugging/log/alarm information sent by the terminal display information center by executing the terminal () command.
(Please use English lowercase letters to complete the command, and the command cannot be abbreviated)

Q82. When configuring the DHCP Relay function on the device, the VLANIF interface of the relay connected to the client must be bound to the DHCP server group, and the bound DHCP server group must be configured with the proxy DHCP server IP address.

Q83. A company purchased private lines from two operators. In order to optimize the lines, the company used the 6GP protocol to learn from two Route entries that operate off. However, after the enterprise found that this configuration, the traffic of the port route increased greatly, and the network engineering arrangement After investigation, it was found that the traffic of the two operators was passed to each other through the enterprise egress router. Therefore, the enterprise intends to use the routing strategy so that the traffic of the packets of different carriers is no longer passed to each other. Is the configuration in the following figure correct?

Q84. MPLS has the concept of FEC forwarding equivalence class, so FEC cannot be allocated based on which of the following standards?

Q85. Which of the following are static information coking analysis? (Multiple choice)

Q86. When a fault occurs, the fault can be classified to reduce the scope of fault location. Which of the following is not an interface configuration fault?

Q87. As shown in the figure, all interfaces of the router enable OSPF, and the configurations of R1, R2, and R3 are as shown in the figure, then () will generate a Type 3 LSA with a linkState ID other than 0.0.0.0. (Please fill in the device name, such as R1)

Q88. Regarding MP-BGP, which of the following descriptions is wrong?