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| Section | Weight | Objectives |
|---|---|---|
| Bearer WAN Planning and Deployment | 15% | - Traffic Engineering
|
| Advanced Routing and Switching Technology | 37% | - Ethernet Switching
|
| Campus Network Planning and Deployment | 23% | - Underlay Network
|
| Network Automation | 17% | - Automation Technologies
|
| WAN Interconnection Network Planning and Deployment | 8% | - Inter-AS VPN
|
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NEW QUESTION # 236
In DU label advertisement mode, if the liberal label retention mode is used, the device reserves labels received from all the LDP peers regardless of whether the LDP peer is the optimal next hop for reaching the destination network.
Answer: A
Explanation:
In MPLS LDP (Label Distribution Protocol), label retention modes control how labels are stored in the Label Forwarding Information Base (LFIB).
DU Label Advertisement Mode (Downstream Unsolicited):
* Labels are advertised to all LDP peers without a request.
* The receiving router decides which label to use for forwarding.
Liberal vs. Conservative Label Retention:
# Liberal Label Retention Mode (Correct Answer)
* All received labels from all LDP peers are stored.
* Even if a peer is not the optimal next hop, its label is retained.
* Allows faster convergence during failures.
# Conservative Label Retention Mode
* Only the label from the best next-hop peer is stored.
* Reduces memory usage but can slow down convergence in case of failure.
Reference from Huawei HCIE-Datacom Documentation:
* Huawei MPLS LDP Configuration Guide - Liberal vs. Conservative Label Retention
* HCIE-Datacom Training Material - Label Advertisement in MPLS Networks
NEW QUESTION # 237
As shown in the figure, all routing diagrams declare the loopback address in OSPF, where R2 does not return the address is 10022/32, it is advisable to tell AraD. The R3 loopback address is 10033/321001.1.0/24 external routing, in order to reduce the burden on the RI router, the configuration command is as follows:( Multiple choice questions)[Rlip ip-prefix 1 permit 001.1.024 [RLIJospfl [RL-ospf-1]filter-policy ip-prefix l import please ask the following description is correct?
Answer: A,B,D
NEW QUESTION # 238
Which of the following statements is incorrect about the user authentication points on the network?
Answer: A
Explanation:
Understanding User Authentication Points in a Network
Authentication points can be deployed at different network layers based on security and scalability needs:
# Access Layer Authentication:
* Ensures high security & granular control (user-level authentication).
* Preferred in high-security enterprise networks.
# Aggregation or Core Layer Authentication:
* Reduces authentication overhead but provides less granular control.
* Suitable for large-scale networks where authentication load needs to be balanced.
Analysis of the Answer Choices:
# A. Deploying user authentication points at the access layer achieves granular permission management and high network security.
* Correct: Provides fine-grained control per user and prevents unauthorized access.
# B. Moving user authentication points from the access layer to the aggregation or core layer greatly reduces the number of user authentication points, thereby effectively mitigating the pressure on the AAA server.
* Correct: Fewer authentication points mean less load on the AAA server.
# C. Deploying user authentication points at the access layer has both advantages and disadvantages when compared to doing so at the aggregation or core layer. Policy association can be applied if user authentication points are deployed at the access layer.
* Correct: Policy-based authentication is best applied at the access layer for granular control.
# D. When user authentication points are moved from the access layer to the aggregation layer, MAC address authentication for users may fail.
* Incorrect: MAC authentication works at both layers, but policy adjustments may be needed.
# Reference: Huawei HCIE-Datacom Guide - User Authentication Strategies in Enterprise Networks
NEW QUESTION # 239
Which of the following statements about BGP EVPN principles are correct in a scenario where a VXLAN tunnel is dynamically established through BGP EVPN?
Answer: A,B,C
Explanation:
BGP EVPN in VXLAN Tunneling
β
A. MP_REACH_NLRI is used to carry routing information.
MP_REACH_NLRI (Multiprotocol Reachable Network Layer Reachability Information) is used in BGP updates to carry VXLAN reachability information.
β
B. Several BGP EVPN routes are defined through BGP extension.
BGP EVPN introduces multiple route types, such as Type 2 (MAC/IP Advertisement), Type 3 (Inclusive Multicast), and Type 5 (IP Prefix Advertisement).
β
D. MP_REACH_NLRI is used to carry the RT.
RT (Route Target) defines route import/export policies in VPN environments.
MP_REACH_NLRI carries the RT attribute in BGP EVPN updates.
β C. MP_REACH_NLRI is used to carry the RD.
Wrong! The Route Distinguisher (RD) is carried inside BGP attributes, but not in MP_REACH_NLRI.
Reference from Huawei HCIE-Datacom Documentation:
Huawei VXLAN BGP EVPN Configuration Guide - BGP EVPN Route Types
HCIE-Datacom Training Material - VXLAN Dynamic Tunnel Establishment
NEW QUESTION # 240
The following description of Filter-Policy is correct?( Radio neck).
Answer: B
NEW QUESTION # 241
......
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