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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Ethernet Switching Technologies | 7% | - VLAN principles and configuration - Link aggregation and stack technology - Spanning Tree Protocol |
| Topic 2: Network Security | 8% | - ACL and packet filtering - Attack defense and security policy - AAA authentication |
| Topic 3: Routing and Traffic Control | 10% | - Route import and redistribution - Policy-based routing - Routing policy and filtering |
| Topic 4: WLAN Basics | 2% | - WLAN deployment and optimization - WLAN technology principles |
| Topic 5: Multicast Technologies | 9% | - IGMP protocol - PIM protocol - Multicast basic concepts |
| Topic 6: OSPF Fundamentals | 16% | - OSPF special applications and troubleshooting - OSPF principles and operation mechanisms - OSPF configuration and optimization |
| Topic 7: Routing Basics | 3% | - Routing concepts and classification - Routing table composition and selection rules |
| Topic 8: IPv6 Technologies | 3% | - IPv6 address structure and configuration - IPv6 routing protocols |
| Topic 9: Network Reliability | 7% | - Device redundancy and link backup - BFD technology - VRRP protocol |
| Topic 10: BGP Fundamentals | 17% | - BGP route attributes and selection - BGP configuration and policy application - BGP characteristics and working principles |
| Topic 11: Network Service and Management | 5% | - DHCP and DNS services - Network management and monitoring |
| Topic 12: Network Solutions and Design | 5% | - Enterprise network design principles - Typical network architecture and solution |
| Topic 13: IS-IS Fundamentals | 8% | - IS-IS protocol principles - IS-IS configuration and deployment |
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NEW QUESTION # 349
On an IS-IS network, the length and components of a NET are the same as those of an NSAP. Which of the following NET fields is used to uniquely identify a host or router in an area?
Answer: A
Explanation:
Comprehensive and Detailed In-Depth Explanation:
* NET (Network Entity Title) is a special form of NSAP (Network Service Access Point) used in IS- IS routing.
* NET consists of three fields:
* AFI (Authority and Format Identifier) + IDI (Initial Domain Identifier) + Area Address # Identifies the area.
* System ID # Uniquely identifies a router within an area (similar to an OSPF Router ID).
* SEL (NSEL - N-selector) # Always 0 in a NET, as IS-IS operates at Layer 3.
* Since System ID uniquely identifies a host/router within an area, the correct answer is A.
# Reference: Huawei HCIA-Datacom Study Guide, IS-IS Addressing and NET Structure.
NEW QUESTION # 350
Match the following IPv4 multicast protocols with the corresponding functions.
Answer:
Explanation:
Explanation:
IGMP: Manages IPv4 multicast group members and runs on the multicast network's last segment (that is, the network segment where a Layer 3 network device is connected to user hosts).
PIM: Sends multicast data over the network to the multicast device that is connected to group members that have requested the multicast data, implementing multicast data forwarding based on routes.
IGMP Snooping: Manages and controls the forwarding of multicast data packets to effectively suppress the flooding of multicast data packets on the Layer 2 network.
IGMP (Internet Group Management Protocol):
* IGMP is used by hosts and adjacent multicast routers to establish and maintain multicast group memberships on a local subnet.
* It allows a host to inform a multicast router of its desire to receive multicast traffic for a specific group.
* It operates at Layer 3 and runs on the last segment of the network.
NEW QUESTION # 351
See the following figure. All routers on the network run IS-IS and are in area 49.0001.
By referring to the LSDB of R1, the Level-2 DIS is. (Enter the device name, for example, R1.)
Answer:
Explanation:
R3
Explanation:
Understanding the LSDB and Level-2 DIS Election in IS-IS:
In IS-IS, theDesignated Intermediate System (DIS)is elected for both Level-1 and Level-2 on broadcast networks to manage the link-state database (LSDB) and reduce the number of LSAs exchanged.
The election of the DIS is based on thehighest priority.
If the priority is the same, the router with thehighest System IDbecomes the DIS.
HCIP-Datacom-Core Technology Training Material (IS-IS DIS Election).
Analyzing the LSDB:
From the LSDB ofR1, the Level-2 link-state database includes the following entries:
LSPID 0100.0000.3003.00-00: This is R3, and it is present in the Level-2 LSDB with the sequence number and checksum details.
Other routers (R1, R2, R4) are present but do not have the characteristics of the Level-2 DIS in this topology.
Based on the System IDs,R3 (0100.0000.3003)has the highest System ID, making it theLevel-2 DIS.
Conclusion:
The Level-2 DIS on the network isR3, based on the election rules and the LSDB information shown in the figure.
NEW QUESTION # 352
The default MPLS label publishing method, label distribution control method, and label retention method of Huawei routers are?
Answer:
Explanation:
NEW QUESTION # 353
In BGP, Notification messages are used to request peers to resend routing information after routing policies are changed.
Answer: B
Explanation:
Notification Message Purpose
BGP Notification messages are used to report errors or terminate a connection. They do not request peers to resend routing information after routing policies are changed. Routing updates following policy changes require manual resynchronization, not Notification messages.
NEW QUESTION # 354
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