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Updated: Aug 29, 2026
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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: BGP Routing Protocol | 22% | - BGP basic principles and session establishment - BGP path attributes and route selection rules - BGP confederation and route reflector - BGP route policy and filtering |
| Topic 2: Switching Technologies | 15% | - Advanced switch features and security - Eth-Trunk technology and configuration - RSTP and MSTP protocols |
| Topic 3: OSPF Routing Protocol | 22% | - OSPF area types and LSA types - OSPF route summarization and filtering - OSPF special configurations and troubleshooting - OSPF neighbor and adjacency establishment - OSPF basic principles and characteristics |
| Topic 4: IS-IS Routing Protocol | 18% | - IS-IS route control and optimization - IS-IS link state database and route calculation - IS-IS basic concepts and network structure - IS-IS level-1 and level-2 routing |
| Topic 5: Routing Control | 13% | - Route redistribution between protocols - Routing policy and filter policy - IP prefix list and access control list |
| Topic 6: IP Multicast | 10% | - Multicast principles and addresses - IGMP protocol and operations - PIM-DM and PIM-SM mechanisms |
Question 1
The differences between IGMP versions are: (Multiple Choice)
A. IGMPv1/v2/v3 cannot support the SSM model.
B. IGMPv1 does not support specific group queries but IGMPv2 support.
C. For members leaving, IGMPv2/v3 can leave actively, but IGMPv1 cannot.
D. IGMPv1/v2 cannot elect the querier on its own, but IGMPv3 can.
Question 2
In multicast network environment, if IGMPv2 hosts and IGMPv1 routers (hereinafter referred to as version 2 host and version 1 router) are co-located on the same LAN, how do they work together?
A. When version 1 router is a valid IGMP querier, the version 2 host must send an IGMPv1 report.
B. When Version 2 host detects that the IGMP Querier is Version 1 router, it must always respond with the IGMPv1 report.
C. version 1 router treats the IGMPv2 report as an invalid IGMP message type and ignores it.
D. When version 2 host leaves, it still sends an IGMP leave message, and the message can't be suppressed.
Question 3
The following is a router BGPFALSE output information, which description of this information is incorrect?
A. The router neighbor address is 10.1.1.5.
B. Error occurred at 12:90:39 on March 22, 2010.
C. The Error Type is displayed due to wrong neighbor relationship.
D. The cause of error may be due to the neighbor address error.
Question 4
Compared with the OSPF protocol, which are the features of IS-IS protocol? (Multiple choices)
A. More types of areas are supported
B. The scalability of the protocol is better
C. More types of network are supported
D. Less protocol packets
Question 5
In different scenarios, RSTP provides different protection functions, which is wrong? (Multiple choice)
A. After the TC-BPDU attack defense function is enabled, the number of times that the switching device processes TC BPDU can be configured.
B. Loop protection is effective on the specified port configuration.
C. After the BPDU guard function is enabled on the switch, if the edge port receives the RST BFDU, the edge port will be set to non-edge port and the spanning tree calculation will be performed again.
D. Root protection is configured on the root port.
Solutions:
| Question 1 Answer: B,C | Question 2 Answer: A,B,C | Question 3 Answer: D | Question 4 Answer: B,D | Question 5 Answer: B,D |
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