Valid Huawei H12-891_V1.0 Test Prep & Real H12-891_V1.0 Dumps

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Huawei H12-891_V1.0 HCIE-Datacom V1.0 certification program is designed for professionals who are responsible for designing, implementing, and managing complex data communication networks. HCIE-Datacom V1.0 certification program is focused on providing in-depth knowledge and expertise in data communication technologies that are used in large-scale enterprise networks.

Huawei HCIE-Datacom V1.0 Sample Questions (Q77-Q82):

NEW QUESTION # 77
When an SSH client logs in to an SSH server that is configured only with username and password authentication in SSH mode, the key exchange phase is not involved (no key is generated).

A. TRUE
B. FALSE

Answer: B

Explanation:
Understanding SSH Authentication and Key Exchange
# What Happens When an SSH Client Connects to a Server?1## Key Exchange Phase (KEX)
* Even if only password authentication is used, SSH still performs key exchange.
* The server and client negotiate encryption keys using algorithms like Diffie-Hellman (DH).
2## User Authentication Phase
* After encryption keys are exchanged, the user authenticates using a username and password.
Why is the Answer FALSE?
# Even with password authentication, SSH still performs key exchange to establish an encrypted session.
# The SSH session is always encrypted using cryptographic keys generated during KEX.
Real-World Application:
* Secure Remote Access: Protects login credentials from MITM (Man-in-the-Middle) attacks.
* Cloud & Datacenter Networks: Ensures secure SSH connections across remote infrastructure.
# Reference: Huawei HCIE-Datacom Guide - SSH Key Exchange and Authentication

NEW QUESTION # 78
In PIM-SM, the description of RP is incorrectly ?

A. An RP can serve multiple multicast groups at the same time, a multicast group can correspond to multiple RPs
B. The initial multicast streams for all groups in the shared tree are forwarded to the receiver via RP
C. RPs can be responsible for the forwarding of several or all multicast groups, and there can be an RP in the network
D. All members of the group and the multicast sources that send multicast data to the group converge to the unique RP

Answer: A

NEW QUESTION # 79
IPV6 multicast introduces the concept of multicast scope, which of the following ways is the multicast scope concept implemented? Multi-select

A. There is a special field in the IPv6 multicast address that specifies the propagation range of multicast.
B. When the group shake source sends IP6 multicast data, the TTL value of the packet is set to limit the transmission range of the group shake
C. Multicast scope is just a concept of spreading scope, and there is no specific technical implementation.
D. During network configuration, the administrator uses the configuration command at the edge of the network to limit the multicast scope.

Answer: A,D

NEW QUESTION # 80
Regarding the Stub region in the OSPF protocol , the following statement is correct.

A. Injecting typeT LSA
B. backbone areas that are not allowed in Stub regions cannot be configured as Stub regions.
C. Virtual connections cannot traverse the Stub region.
D. ASBR cannot exist in the Stub zone

Answer: A,B,C,D

NEW QUESTION # 81
What are the following techniques for improving MPLS BGP VPN reliability?( Multiple choice question)

A. VPN GR Private IP routing between
B. VPN FRR
C. dual home networking is configured at the access layer
D. PE-CE FRR

Answer: A,B,C,D

NEW QUESTION # 82
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