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Huawei HCIE-Datacom V1.0 Sample Questions (Q285-Q290):

NEW QUESTION # 285
MPLS is called multiprotocol label switching, and with respect to label descriptions in MPLS, the correct one is ?( Multiple select).

A. A tag is a fixed-length, locally only meaningful identifier that uniquely identifies the FEC to which a group belongs
B. MPLS supports single-layer tags as well as multi-tier tags
C. The MPLS system has a variety of label publishing protocols, such as LDP is a label publishing protocol
D. The label is carried by the head of the MPLS message and has a global significance, that is, the label value of all routers cannot repeat

Answer: A,B,C

NEW QUESTION # 286
Which of the following statements about 802.1X authentication are correct?

A. In EAP termination mode, EAP packets are terminated and re-encapsulated into RADIUS packets on the network access device. The network access device and AAA server use the standard RADIUS protocol to implement authentication, authorization, and accounting.
B. EAPoL implements EAP encapsulation on an IEEE 802.3 network, whereas EAPoW implements EAP encapsulation on an IEEE 802.11 network.
C. In EAP relay mode, EAP packets are directly encapsulated by the network access device into RADIUS packets (that is, EAP over RADIUS, or EAPoR). The network access device and AAA server use EAPoR to perform authentication, authorization, and accounting.
D. 802.1X authentication uses EAPoL to exchange authentication information between the client, device, and authentication server.

Answer: A,B,C,D

Explanation:
802.1X Authentication Overview
802.1X is a port-based authentication mechanism used for secure network access control. It involves:
EAPoL (Extensible Authentication Protocol over LAN) communication between the client (supplicant) and the switch (authenticator).
RADIUS communication between the authenticator and the authentication server (AAA server).
✅ A. 802.1X authentication uses EAPoL to exchange authentication information.
EAPoL (Extensible Authentication Protocol over LAN) is used to send authentication packets over Ethernet (IEEE 802.3) networks.
✅ B. In EAP termination mode, the network device terminates EAP packets and re-encapsulates them into RADIUS.
The switch acts as an authentication proxy by terminating EAP sessions and converting authentication information into RADIUS format.
✅ C. EAPoL is for wired (802.3), EAPoW is for wireless (802.11).
EAPoL (EAP over LAN) is used in wired Ethernet networks.
EAPoW (EAP over Wireless) is used in Wi-Fi (802.11) networks.
✅ D. In EAP relay mode, EAP packets are encapsulated into RADIUS using EAPoR (EAP over RADIUS).
The switch does not terminate the EAP session but instead forwards EAP messages to the AAA server inside RADIUS packets.
Reference from Huawei HCIE-Datacom Documentation:
Huawei 802.1X Configuration Guide - EAPoL, EAPoW, and EAPoR
HCIE-Datacom Training Material - AAA Authentication Modes

NEW QUESTION # 287
Level-1-2IS transmits Level-2LSP to the Level-1 area if the AT location 1 in Level-2LSP is delivered It means that the Level-1lS in the area can be accessed to the outer area through Level-1-2IlS

A. False
B. True

Answer: A

NEW QUESTION # 288
When deploying BGP/MPLS IPVPN, OSPF's VPN route tag is not present
The extended properties of MP-BGP are passed only locally, only locally, and only meaningful on routers that receive MP-BGP routes and generate OSPF LSAs.

A. TRUE
B. FALSE

Answer: A

NEW QUESTION # 289
Which of the following statements about SR-MPLS characteristics are correct? (Select all that apply)

A. SR-MPLS supports smooth network evolution by extending existing protocols, such as IGPs.
B. Only the controller can compute paths based on explicit paths.
C. Such networks can quickly interact with upper-layer applications through the source routing technology.
D. Efficient TI-LFA FRR protection is provided for fast path fault recovery.

Answer: A,C,D

Explanation:
Let's break it down:
A . ❌ Incorrect - Path computation can be done by both controller and ingress routers, not just the controller.
B . ✅ SR-MPLS extends IGP protocols (e.g., OSPF/IS-IS) for segment distribution, allowing smooth evolution.
C . ✅ Supports TI-LFA (Topology Independent Loop-Free Alternate) for fast failure recovery.
D . ✅ Through source routing, SR-MPLS integrates easily with applications for programmable path control.
Exact Extract - HCIE-Datacom Segment Routing Chapter:
"SR-MPLS supports distributed and centralized path computation, uses IGP extensions for deployment, and supports TI-LFA for FRR. It allows interaction with applications through programmable routing." Reference:
Huawei Segment Routing White Paper
HCIE-Datacom Study Guide - SR-MPLS Technology

NEW QUESTION # 290
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