NO.49 An engineer uses two routers to test IPv6. He wants to realize the interconnection of IPv6 networks by running OSPFv3. About the OSPFv3 related configuration that needs to be done on R1
, which are correct? (Multiple choice)

NO.50 R1 contains the configuration shown in the figure, which of the following statement about IS-IS process 1 is correct?

NO.51 Which of the following aspects should be considered in the cutover risk assessment? (Multiple choice)

NO.52 The IS-IS neighbor relationship between R3 and R1 is not established. According to the information in this figure, what is the possible reason?

NO.53 Among the following options, which of the following descriptions is wrong?

NO.54 Which of the following commands can be used to view information about BGP VPNV4 routes and BGP private network routes on PE?

NO.55 As shown in the figure, in a medium-sized network, in order to improve the reliability of RR, BGP generally deploys double R.

When deploying dual EE, the Cluster IDs of the two RRs are generally set to be the same. What is the reason for this?

NO.56 Which of the following description of the configuration on this switch is correct? (Multiple choice)

NO.57 The routing policy tools that BGP can use mainly include Filter-policy and Route-policy. Filter-policy can only filter routes, and Route-policy can only modify routes.

NO.58 What are the reasons why DHCP faces many security threats? (Multiple choice)

NO.59 What characteristics must a high-risk operating program have? (Multiple choice)

NO.60 As shown in the figure, the entire network of a company uses OSPF to open up the network. However, RouterS and RouterE cannot establish an OSPF neighbor relationship. When network administrators detect OSPF faults, they can run the display ospf ( ) 1000 interface GE0/0/1 command on RouterS to obtain information about the errors. Users can perform OSPF fault diagnosis based on the information. (Please use English lowercase letters to complete the command, and the command cannot be abbreviated)

NO.61 Which of the following statements about MUX VLANs are true? (Multiple choice)

NO.62 What technologies can Agile Controller implement for admission control? (Multiple choice)

NO.63 The QoS technique commonly used for congestion avoidance is?

NO.64 As shown in the figure, OSPF is enabled on all interfaces of the router. The IP address marked in the figure is the IP address of the loopback0 interface of the device. Loopback0 of R1 and R2 is advertised in area 1, Loopback0 of R4 is advertised in area 0, and Loopback0 of R3 and R5 is advertised in area 2. Which of the following IP addresses can ping each other? (Multiple choice)

NO.65 Assuming that the neighbor relationship between BGP routers has been established successfully, the configuration on R1 is as shown in the figure.

Which router can the routing entry 10.10.10.0/24 published by 1 be delivered to the farthest?

NO.66 Which of the following statements about OSPF’s Router LSA and Network LSA is wrong? (Multiple choice)

NO.67 The Tos field is used to mark the QOS in the IP packet, and the first 6 bits of the Tos field are used to mark the DSCP.

NO.68 What are the working modes of firewall interfaces? (Multiple choice)

NO.69 BGP/MPLS IP VPN can only use LDP to build a public network channel.

NO.70 Which of the following BGP routing attributes cannot control BGP routing?

NO.71 What is the command to adjust the IS-IS interface link cost value?

NO.72 The Router LSA of a certain router is shown in the figure. Which of the following statements is wrong?