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| Section | Objectives |
|---|---|
| Routing Protocols | - OSPF Implementation and Optimization - BGP Basics and Policy Control - IS-IS Fundamentals |
| Network Services and QoS | - QoS Mechanisms and Traffic Management - Network Reliability and Redundancy |
| Network Management and Automation | - Basic Network Automation Concepts - Network Monitoring and O&M Tools |
| MPLS and VPN Technologies | - MPLS Architecture and Label Switching - L2VPN and L3VPN Deployment |
| IP Network Fundamentals | - IPv4 and IPv6 Addressing - TCP/IP Model and Networking Principles |
1. Which of the following are the functions of the switching fabric board? (Multiple choice)
A) Responsible for the data plane of the system
B) Responsible for the control plane of the system
C) Switch traffic between service boards
D) Provide optical ports with different rates
2. Which of the following descriptions about BGP route aggregation is wrong?
A) For IPv6, BGP supports both manual aggregation and automatic aggregation
B) Route aggregation is a mechanism for merging multiple routes. It reduces the size of the routing table by only sending the aggregated route to the peer instead of sending all the specific routes.
C) In order to avoid routing loops that may be caused by route aggregation, BGP designed the AS_Set attribute
D) Manual aggregation can control the attributes of aggregated routes and decide whether to publish specific routes
3. Which descriptions about IGMP Snooping are correct? (Multiple choice)
A) IGMP Snooping runs at the link layer and is a multicast restriction mechanism on Layer 2 Ethernet switches, used to manage and control multicast groups
B) IGMP Snooping establishes a MAC multicast address table by listening to the IGMP text sent by the host
C) IGMP Snooping does not consume the CPU of the switch
D) IGMP Snooping solves the problem of broadcasting multicast packets at Layer 3.
4. The LSDB output of a router R2 is shown in the figure. According to the analysis of the content in the figure, which of the following options is wrong?


A) There is no Stub area in the entire environment involved in the figure
B) Area boundary route aggregation exists in Area1
C) R2 is deployed in the backbone area, and R2 is an ABR
D) ASBR exists in Area 2, and the Router ID of ASBR is 6.6.6.6
5. Which of the following descriptions about OSPF Router ID is correct?
A) When using the IP address of a physical interface as the Router ID of OSPF, the interface must be included in the corresponding OSPF domain.
B) If the physical interface IP address is used as the OSPF Router ID, the one with the highest IP address will be selected as the OSPF Router ID of the device.
C) Allow multiple devices to use the same Router ID, which also makes it easier to identify the area where the device is located.
D) When the OSPF Router ID is not manually configured, the device first uses the IP address of the Loopback 0 interface as the Router ID.
Solutions:
| Question # 1 Answer: A,C | Question # 2 Answer: A | Question # 3 Answer: A,B | Question # 4 Answer: D | Question # 5 Answer: D |
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