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| Section | Objectives |
|---|---|
| Topic 1: IPv6 Technologies | - IPv6 Fundamentals
|
| Topic 2: IP Multicast | - Multicast Technologies
|
| Topic 3: Enterprise Network Architecture and Design | - Enterprise Network Architecture
|
| Topic 4: Switching Technologies | - Link Aggregation
|
| Topic 5: Routing Technologies | - IS-IS
|
| Topic 6: Network Maintenance and Troubleshooting | - Operations and Maintenance
|
| Topic 7: Network Security | - Security Fundamentals
|
1. Which of the following description about the LSA age field is correct? (Multiple choices)
A) The unit of LSA age is second, and the LS age of the LSA in the LSDB decreases with time.
B) If the LSA age of an LSA reaches LSRefreshTime (30 min), any router can regenerate an LSA instance for this LSA.
C) If the LSA age of an LSA reaches LSRefreshTime (30 min), the LSA producer needs to regenerate an LSA instance.
D) The unit of LSA age is seconds, and the LS age of the LSA in the LSDB grows with time.
2. Which of the following circumstances can cause multicast traffic fail to reach the user? (Multiple Choice)
A) The router does not have dynamic routing
B) The receiver router discards the received IGMP Report
C) The router-related interface does not have the PIM protocol enabled.
D) The upstream router discards the received Graft packet.
3. After the BGP connection is established, in the case where load sharing is not configured, the BGP speaker advertises only one of the best routes in the BGP routing table to the neighbor.
A) TRUE
B) FALSE
4. Which description is wrong about the router that can initiate SPT switching in the PIM-SM network? (Multiple Choice)
A) Source DR router
B) Last-hop router
C) Intermediate router
D) RP router
5. OSPF route classification: divided into 4 categories, what are the priorities in order?
A) Intra-area routing, inter-area routing, second-class external routing, and first-class external routing
B) Inter-area routing, intra-area routing, first-class external routing, and second-class external routing
C) intra-area routing, inter-area routing, first-class external routing, and second-class external routing
D) Inter-area routing, intra-area routing, second-class external routing, and first-class external routing
Solutions:
| Question # 1 Answer: C,D | Question # 2 Answer: A,B,C,D | Question # 3 Answer: B | Question # 4 Answer: A,C | Question # 5 Answer: C |
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