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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Campus Network Planning and Deployment | 23% | - Campus Network Architecture
|
| Topic 2: Advanced Routing and Switching Technology | 37% | - BGP
|
| Topic 3: Bearer WAN Planning and Deployment | 15% | - Traffic Engineering
|
| Topic 4: Network Automation | 17% | - iMaster NCE
|
| Topic 5: WAN Interconnection Network Planning and Deployment | 8% | - SD-WAN
|
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NEW QUESTION # 139
The default configured switch has an empty MAC address table at this time , and Host A connected to the switch issues the first unicast data frame, so what will the switch do after receiving the teaching system?( Single choice questions).
Answer: C
NEW QUESTION # 140
There are three port roles defined in RSTP, with alternative ports and backup ports flags in STP messages The port role values within the fields are consistent, all of which are 01
Answer: B
NEW QUESTION # 141
Regarding route introduction, the following description is correctly ?( Multiple choice questions).
Answer: B,D
NEW QUESTION # 142
On the bearer WAN shown in the figure,SR (Segment Routing)is deployed, and the controller is used to compute paths. Drag network technologies on the left to the corresponding application locations on the right.
Answer:
Explanation:
Comprehensive and Detailed In-Depth Explanation:
The diagram shows aWAN networkwhereSegment Routing (SR)is used in conjunction with theiMaster NCEcontroller. The network consists ofData Centers (DCs),Branches,Provider Edge (PE)routers, andRoute Reflectors (RR)withinAS 65600. Let ' s analyze each network technology and its placement in the scenario.
1. BGP-LS (Border Gateway Protocol - Link State):
Application Location:1 (PE to RR)
BGP-LS is used tocollect and distribute network topology informationfrom theIGP (Interior Gateway Protocol)domain.
It enables theiMaster NCE(controller) to learn about the network topology and SR information from PE routers.
The PE routers send theirlink-state informationto theRRusingBGP-LS.
Why Location 1:
The RR collects topology data from PEs and forwards it to the controller for path computation.
2. BGP (Border Gateway Protocol):
Application Location:2 (RR to iMaster NCE)
Standard BGP is used forroute distributionandnetwork connectivity.
The RR usesBGPto exchange route information with thecontroller(iMaster NCE).
Why Location 2:
TheRRaggregates routes and exchanges them with the iMaster NCE for centralized management.
3. MP-IBGP (Multiprotocol Internal BGP):
Application Location:3 (PE to PE)
MP-IBGP is used toexchange VPNv4 and VPNv6 routesbetween PE routers within thesame AS.
It allows PEs toadvertise VPN routesacross thebackbone network.
Why Location 3:
PEs need to communicate VPN-related information within the AS, ensuring end-to-end connectivity between DCs and branches.
4. BGP SR-Policy/PCEP (Path Computation Element Protocol):
Application Location:4 (iMaster NCE to PE)
BGP SR-Policy andPCEPare used by thecontrollertodistribute SR policiesto the PE routers.
TheiMaster NCEcalculates optimal paths and sends the SR policies to PEs viaBGP SR-PolicyorPCEP.
Why Location 4:
The controller programs theSegment Routing pathsdirectly to the PEs for optimal traffic engineering.
Why This Mapping Is Correct:
The mapping is based on theroles and functions of each protocolwithin theSR-based WAN architecture. The controller uses BGP-LS to learn topology, BGP for route reflection, MP-IBGP for VPN route exchange, and BGP SR-Policy/PCEP for path computation and distribution.
References:
Huawei HCIE-Datacom V1.0 Training Materials
Huawei Official Documentation: Segment Routing Configuration Guide
Huawei iMaster NCE-Campus Guide
RFC 7752 - BGP-LS (Link State)
RFC 8283 - BGP SR-Policy
RFC 5440 - PCEP (Path Computation Element Protocol)
HCIE-Datacom Knowledge Base: Segment Routing and Traffic Engineering
NEW QUESTION # 143
Fill in Blank
Network administrator A wants to view the BGP peer status of R2. The BGP peer status of R2 is shown in this figure. Obtain the following information: R2 resides in AS _____ (Enter only digits. Do not add punctuations or spaces.)
Answer:
Explanation:
102
Explanation:
From the command output:[R2] display bgp group inRemote AS: 102...Type: internal...Peer Members:10.1.3.3 4 10210.1.4.4 4 10210.1.5.5 4 102Key indicators:"Remote AS: 102""Type: internal" - This tells us that the BGP session is iBGP.In iBGP, both the local and remote routers are in the same AS.Since all remote peers (10.1.3.3, 10.1.4.4, 10.1.5.5) are in AS 102, and the session type is internal, that means R2 must also be in AS 102.Correct answer: 102In Huawei BGP implementation:If the BGP peer type is "internal", the local router and peer router are in the same AS.The Remote AS shown in the display bgp group command refers to the AS number configured for the peer.Since the session type is internal, the local AS = remote AS.
NEW QUESTION # 144
......
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