1. Regarding the two working modes of PIM-DM and PIM-SM, the correct description is: (Multiple Choice)

2. The BGP attributes that are typically used to control how data flows out of the AS are:

3. When the other routing protocol is introduced in a routing protocol, in order to introduce only a part of the routing information that satisfies the conditions and set some attributes of all imported routing information, only the route-policy tool can be used.

4. Multicast related protocols do not include:

5. Which of the following information is carried in the BGP Open message? (Multiple Choice)

6. The correct description of the LSA is:

7. Regarding the description of the network command in BGP, the error is:

8. The difference between the PIM-SM protocol and the PIM-DM protocol is: (Multiple Choice)

9. Which of the following conditions can cause multicast traffic to fail to reach the user? (Multiple Choice)

10. Regarding the NSSA command description, the error is:

11. Regarding the description of BGP neighbors, the errors are: (Multiple Choice)

12. The BGP AS_PATH attribute is an optional transition attribute.

13. The routing tool route-policy can give pre-defined condition filtering and set BGP attributes, so it is often used to define policies for BGP peers, and is often used during route generation. By default, all unmatched routes were rejected to go through route-policy.

14. The Hold time carried by the BGP neighbor PeerA in the Open is 90s. The Hold time carried by the PeerB in the Open is 30s. The interval between the PeerA and the PeerB after the connection is successfully established is:

15. Link Aggregation is a way to bundle a set of physical interfaces together as a logical interface to increase bandwidth.
There are two types of link aggregation control protocols: manual load balancing mode and static LACP mode.

16. In the ACL rule, if all the rules are found and there are no rules that meet the conditions, called the miss rules, no processing is performed on the packets.

17. For IPv4, according to the address space of the SSM range allocated by IANA, which of the following addresses are legal?

18. IGMPv3 not only supports the general group query of IGMPv1 version and the specific group query of IGMPv2 version, but also supports the specified source/group query of IGMPv3 version.

19. What are the main steps included in the IS-IS protocol routing calculation? (Multiple Choice)

20. If the router-id is configured in the system view and the BGP view of router, becuase of the high priority of the BGP view, the BGP view uses the router-id in the BGP view.

21. Which of the following description of OSPF is correct?

22. Which of the following BGP attributes are not included in the Update message of the BGP route? (Multiple Choice)

23. Both policy routing and routing policies can affect the forwarding process of data packets, but they affect the packets differently. Policy routing is based on policy-based forwarding. Find the routing table forwarding after failure. Based on the forwarding plane, it serves the forwarding policy and needs to be manually configured. The routing policy is based on the destination address and is forwarded according to the routing table. Based on the control plane, it serves the routing protocol and the routing table, and combines with the routing protocol to complete the policy.

24. When OSPF runs on a broadcast network, you need to elect DR and BDR. Then, in which of the following states will DR and BDR be elected?

25. One of the features of OSPF is that it only supports MD5 authentication.