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Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Certification Exam is a globally recognized certification program that is designed to validate the skills and expertise of professionals in the field of Datacom. HCIE-Datacom V1.0 certification exam is conducted by Huawei, one of the leading providers of ICT solutions and services in the world. The HCIE-Datacom V1.0 Certification Exam is the highest level of certification in the Huawei Datacom certification track.

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Huawei H12-891_V1.0 (HCIE-Datacom V1.0) certification exam is designed for professionals who have the skills and knowledge to plan, design, operate, maintain, and troubleshoot complex data communication networks. It is intended for network architects, senior network engineers, network managers, and other professionals who are involved in the design, deployment, and optimization of data communication networks.

Huawei HCIE-Datacom V1.0 Sample Questions (Q112-Q117):

NEW QUESTION # 112
As shown in the figure, R1, R2, R3, and R4 reside in the same MPLS domain, and LDP (Label Distribution Protocol) is used to distribute MPLS labels.
R4 is the egress LSR (Label Switching Router) for the FEC (Forwarding Equivalence Class) 4.4.4.0/24.
To make R4 aware of QoS forwarding priority of a packet sent from R1 and destined for 4.4.4.0/24, Without looking up R4's label forwarding information base, The outgoing label of the FEC on R3 should be _____ (Enter an Arabic numeral without symbols).

Answer:

Explanation:
0
Explanation:
Understanding MPLS LDP and PHP (Penultimate Hop Popping):
# Label Distribution in MPLS LDP:
* LDP assigns labels to FECs so that routers can forward packets based on labels rather than IP lookup.
* Labels are advertised downstream (from R4 to R3, R3 to R2, and so on).
# Penultimate Hop Popping (PHP) Concept:
* The egress LSR (R4) does not require an incoming label for 4.4.4.0/24.
* Instead, R3 (Penultimate LSR) removes the label before forwarding the packet to R4.
* R3 forwards the packet as an IP packet, not an MPLS packet, to avoid an unnecessary label lookup at R4.
* In MPLS LDP, the label "0" is used to indicate an implicit NULL label (PHP operation).
Why the Answer is "0" (Implicit NULL Label)?
# Since R4 is the egress LSR, it does not need a label for 4.4.4.0/24.# R3 assigns the outgoing label as "0" (Implicit NULL Label) to indicate that the label should be removed before sending to R4.# R4 receives the packet as a pure IP packet (no MPLS label).
Why Other Answers Are Incorrect?
# Any value other than "0"
* If R3 assigns a label (e.g., 100), R4 would need to perform an unnecessary MPLS lookup, which is inefficient.
* Using "0" ensures PHP occurs, optimizing the forwarding process.
# Reference: Huawei HCIE Datacom - MPLS LDP and Penultimate Hop Popping (PHP)

NEW QUESTION # 113
OSPFv3 uses the same route advertisement method as OSPFv2: advertising is done through the network command in the OSPFv3 area view.

A. TRUE
B. False

Answer: B

NEW QUESTION # 114
In the following topology diagram,

R1 can be established between R2 and R3 fetches the Internet, RI and R2, R1 and R3 EGP connections, R2, R3 belong to the same AS The default routes are issued through BGP separately, requiring R2 to be preferred for traffic accessed by RI to the Internet, and the following practices can be achieved

A. R1 specifies that peer R3 sets the MED property to 150 in the import direction
B. R2 specifies peer R1 in the export direction setting MED property to 150
C. R1 specifies the peer R2 sets the local priority in the import direction to 150
D. R2 specifies that peer R1 is in export The direction setting local priority is 150

Answer: A,C

NEW QUESTION # 115
Regarding the FTP protocol, is it correct in the description below?

A. FTP always uses TCP port 21 to establish a data session and TCP port 20 to establish a control session
B. FTP always uses the TCP port to establish a data session and ICP port 21 to establish a control session
C. FTP always uses a TCP session to transmit control information and data information
D. In ftP-style, the client completes the initialization of the TCP session for control and data
E. In ftP Activee, the server side tells the client which port it expects to send data on by commanding
"PORT"

Answer: D

NEW QUESTION # 116
Which of the following statements about GRE is incorrect?

A. GRE is easy to implement and puts little burden on devices at both ends of a tunnel.
B. GRE can encapsulate IPv6 broadcast packets.
C. GRE can encapsulate IPv4 unicast packets.
D. GRE can encapsulate IPv6 unicast packets.

Answer: B

Explanation:
GRE (Generic Routing Encapsulation)supports encapsulation of many protocol types:
SupportsIPv4 and IPv6 unicastencapsulation -#
Doesnot support IPv6 broadcastencapsulation. GRE doesn't natively handle multicast or broadcast IPv6 traffic well -# It is a lightweight tunneling protocol and relativelyeasy to deploy, placing minimal overhead on devices -# Correct answer: C. GRE can encapsulate IPv6 broadcast packets- is incorrect.

NEW QUESTION # 117
......

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