Last Updated: Aug 15, 2026
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| Section | Objectives |
|---|---|
| Topic 1: Network Management and Troubleshooting | - Network monitoring and diagnostics tools - Basic troubleshooting methodologies |
| Topic 2: Routing Technologies | - BGP basics and route selection - IS-IS fundamentals - Static routing and policy-based routing - OSPF (single-area and multi-area) |
| Topic 3: IP Services | - NTP and basic network services - DHCP configuration and relay - NAT/PAT implementation |
| Topic 4: Enterprise Network Fundamentals | - TCP/IP model and IP addressing - Network device roles and architecture - IPv4/IPv6 fundamentals |
| Topic 5: Network Security Fundamentals | - ACL configuration and traffic filtering - Basic device security hardening |
| Topic 6: WAN and MPLS Basics | - VPN fundamentals (L2VPN/L3VPN concepts) - MPLS architecture overview |
| Topic 7: LAN Switching Technologies | - EtherChannel / link aggregation - VLANs and VLAN implementation - STP/RSTP/MSTP concepts and configuration |
1. The Link ID of the third LSA is:
A) The port IP address of the DR on the described network segment.
B) The described destination network segment.
C) Router ID of the described ABR.
D) Router ID of the router that generates this SA.
2. Which of the following is not a recognized attribute in a BGP route attribute?
A) AS_PATH
B) MED
C) Origin
D) Local_Pref
3. Which of the following BGP reliable routing updates is correct?
A) BGP uses multicast updates.
B) The BGP sends an OPEN packet to detect TCP connectivity.
C) BGP does not require periodic updates.
D) BGP sends complete routing table information for each route update.
E) BGP works on the transport layer and the UDP protocol number is 179.
4. The above is the output information of router. The neighbor relationship between the router and the neighbor 2.2.2.2 is in the Adroe state analysis. Which of the following is the most likely reason?
A) It may be due to not receiving the other party's update message.
B) It may be due to a problem with OPEN negotiation.
C) It may be due to not receiving the KEEPALVIE packet from the other party.
D) It may be TCP port 179 is disabled.
5. Which description is correct about the IGMP Snooping mechanism?
A) The Layer 2 switch establishes and maintains a MAC broadcast address table at Layer 2 by continuously monitoring IGMP messages.
B) If the IGMP leave message sent by the host, the switch adds the host to the corresponding multicast table.
C) When IGMP Snooping is not running, multicast packets will be broadcast on Layer 2. After IGMP Snooping is run, packets will not be broadcast on Layer 2 but Layer 2 multicast.
D) If the host sends an IGMP host report, the switch deletes the multicast entry corresponding to the host.
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: B | Question # 3 Answer: C | Question # 4 Answer: D | Question # 5 Answer: C |
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