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| Section | Weight | Objectives |
|---|---|---|
| Routing and Traffic Control | 10% | - Policy-based routing - Route import and redistribution - Routing policy and filtering |
| Multicast Technologies | 9% | - PIM protocol - Multicast basic concepts - IGMP protocol |
| IPv6 Technologies | 3% | - IPv6 routing protocols - IPv6 address structure and configuration |
| IS-IS Fundamentals | 8% | - IS-IS configuration and deployment - IS-IS protocol principles |
| Network Reliability | 7% | - BFD technology - VRRP protocol - Device redundancy and link backup |
| Routing Basics | 3% | - Routing table composition and selection rules - Routing concepts and classification |
| Network Solutions and Design | 5% | - Typical network architecture and solution - Enterprise network design principles |
| BGP Fundamentals | 17% | - BGP configuration and policy application - BGP characteristics and working principles - BGP route attributes and selection |
| OSPF Fundamentals | 16% | - OSPF special applications and troubleshooting - OSPF configuration and optimization - OSPF principles and operation mechanisms |
| Network Security | 8% | - AAA authentication - Attack defense and security policy - ACL and packet filtering |
| Network Service and Management | 5% | - Network management and monitoring - DHCP and DNS services |
| WLAN Basics | 2% | - WLAN technology principles - WLAN deployment and optimization |
| Ethernet Switching Technologies | 7% | - Spanning Tree Protocol - VLAN principles and configuration - Link aggregation and stack technology |
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NEW QUESTION # 193
On an OSPF network, an IR in area 0 must be a BR, but an ASBR may not be an ABR.
Answer: B
Explanation:
Comprehensive and Detailed In-Depth Explanation:
* Internal Router (IR): A router that exists entirely within a single OSPF area (e.g., Area 0). It does not have to be a Border Router (BR).
* Area Border Router (ABR): A router that connects two or more OSPF areas. It maintains separate LSDBs for each area and forwards summary LSAs between them.
* Autonomous System Boundary Router (ASBR): A router that connects the OSPF domain to an external network (e.g., BGP, another OSPF AS).
* The statement is false because:
* An IR in Area 0 does not have to be a BR (Border Router). It can just be a normal internal router.
* An ASBR does not have to be an ABR. An ASBR can exist inside any OSPF area, even a single area, without needing to connect multiple areas.
# Reference: Huawei HCIA-Datacom Study Guide, OSPF Router Types and Area Concepts.
NEW QUESTION # 194
Which of the following statements about OSPF protocol packets is wrong?
Answer: C
NEW QUESTION # 195
In VRRP, which of the following reasons will not cause two Master devices to appear in the same backup group?
Answer: A
NEW QUESTION # 196
Speaker only advertises changed routes to neighbors.
Answer: A
NEW QUESTION # 197
After a BGP peer relationship is established between two ends, changing the router ID of one end resets the BGP peer relationship.
Answer: A
Explanation:
BGP Router ID Behavior:
The router ID uniquely identifies a BGP device in the network. If the router ID is changed, it is equivalent to creating a new BGP instance, and the existing BGP session is reset to establish a new peer relationship.
Impact of Router ID Change: BGP peering relies on stable identifiers. Changing the router ID disrupts the TCP session and requires reestablishing the relationship.
NEW QUESTION # 198
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