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| Section | Weight | Objectives |
|---|---|---|
| Multicast Technologies | 9% | - IGMP protocol - Multicast basic concepts - PIM protocol |
| Routing and Traffic Control | 10% | - Policy-based routing - Route import and redistribution - Routing policy and filtering |
| Network Service and Management | 5% | - DHCP and DNS services - Network management and monitoring |
| OSPF Fundamentals | 16% | - OSPF special applications and troubleshooting - OSPF principles and operation mechanisms - OSPF configuration and optimization |
| BGP Fundamentals | 17% | - BGP characteristics and working principles - BGP route attributes and selection - BGP configuration and policy application |
| WLAN Basics | 2% | - WLAN technology principles - WLAN deployment and optimization |
| Network Solutions and Design | 5% | - Enterprise network design principles - Typical network architecture and solution |
| Network Security | 8% | - Attack defense and security policy - ACL and packet filtering - AAA authentication |
| Ethernet Switching Technologies | 7% | - Spanning Tree Protocol - VLAN principles and configuration - Link aggregation and stack technology |
| Routing Basics | 3% | - Routing concepts and classification - Routing table composition and selection rules |
| IPv6 Technologies | 3% | - IPv6 routing protocols - IPv6 address structure and configuration |
| Network Reliability | 7% | - BFD technology - VRRP protocol - Device redundancy and link backup |
| IS-IS Fundamentals | 8% | - IS-IS protocol principles - IS-IS configuration and deployment |
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問題 #215
On an enterprise network, the directly connected interfaces of two OSPF routers are on different network segments and have different masks. To establish an OSPF neighbor relationship between the two interfaces, you can change their network types to which of the following?
答案：C
解題說明：
Comprehensive and Detailed in-depth Step-by-Step Explanation:To establish an OSPF neighbor relationship, the following conditions must be met:
* The routers must share a common network segment.
* Their Hello and Dead intervals must match.
* Their OSPF network types must be compatible.
* The IP subnet masks must match.
If two OSPF routers are on different network segments and have different subnet masks, one solution is to change the OSPF network type to Point-to-Point (P2P) on both interfaces.
* Point-to-Point (P2P):
* In a P2P network type, OSPF ignores the subnet mask mismatch and establishes the neighbor relationship regardless of the network mask.
* This is ideal for directly connected links between two routers.
* NBMA (Non-Broadcast Multi-Access):
* This network type is used for networks like Frame Relay or ATM, where a single physical interface connects to multiple neighbors.
* It is not applicable to solving subnet mask mismatches for a single link.
* P2MP (Point-to-Multipoint):
* This type treats the link as multiple P2P links. It is mainly used in hub-and-spoke topologies.
* While it can be configured to solve subnet mask mismatches, it is more complex and less commonly used compared to the P2P type.
* Broadcast:
* This type requires all routers on the same segment to agree on subnet masks, so it cannot resolve the subnet mask mismatch issue.
Therefore, the correct answer is A. Point-to-point.
References:
* Huawei HCIA-Datacom Study Guide, Chapter on "OSPF Neighbor Relationships".
* RFC 2328 - OSPF Version 2, Section 10.
問題 #216
In a WLAN network, when there is an IPv4 Layer 3 networking between the AC and AP, the user needs to configure the Option43 field.
Which of the following functions does it mainly implement?
答案：D
問題 #217
Which of the following statements regarding DR/BDR are false?
答案：B
解題說明：
In OSPF, DR and BDR listen on the multicast address 224.0.0.6, while all OSPF routers (including DR others) listen on 224.0.0.5. DR others establish neighbor relationships with DR and BDR, but they do not listen on 224.0.0.6. This makes Option D incorrect, as only DR and BDR use 224.0.0.6 .
問題 #218
Which of the following parameters are not required when configuring BGP Peer? (Multiple choice)
答案：B,D
問題 #219
Which of the following descriptions about IGMPv1 and IGMPv2 are correct? (Multiple choice)
答案：A,B,D
問題 #220
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