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Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Certification Exam is an expert-level exam offered by Huawei Technologies Co., Ltd. HCIE-Datacom V1.0 certification exam is designed to validate the skills and knowledge required for planning, designing, implementing, operating, maintaining, and troubleshooting complex data communication networks. H12-891_V1.0 exam covers a wide range of topics, including network design, network security, network management, and network optimization.
Upon passing the Huawei H12-891_V1.0 (HCIE-Datacom V1.0) certification exam, candidates will join the elite group of certified professionals who have demonstrated their expertise in data communication networks. They will have the skills and knowledge to design, implement, and manage complex data communication networks, which will help them advance their careers in the ICT industry.
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NEW QUESTION # 81
MACsec can provide secure services during MAC-layer data transmitting and receiving. Which of the following services isnotprovided by MACsec?
Answer: D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
MACsec (Media Access Control Security)is a security protocol that provides securecommunication over Ethernet links. It operates at the MAC layer (Layer 2) and offers the following key security services:
Integrity Check (B):Ensures that data has not been tampered with during transmission.
User Data Encryption (C):Protects data confidentiality by encrypting the payload.
Data Source Authenticity Verification (D):Confirms that the data originates from a legitimate source by using security associations.
Controllability Check (A)is not a service provided by MACsec. The term "controllability" typically relates to network management and configuration control rather than data security. MACsec primarily focuses on protecting data integrity, confidentiality, and authenticity, rather than controlling network elements or configurations.
NEW QUESTION # 82
Fill in Blank
During the configuration of L3VPNv4 over SRv6 BE, if an RR is deployed in the SR domain, which command must be run on the RR to ensure that the PEs at both ends can correctly learn VPNv4 routes?
Answer:
Explanation:
peerretainroutetargetall
Explanation:
Understanding L3VPNv4 Over SRv6 BE
๐น What is L3VPNv4?
L3VPNv4 (Layer 3 VPN over IPv4) allows MPLS-based VPN services over an SRv6 backbone.
Uses MP-BGP (Multiprotocol BGP) to distribute VPN routes.
๐น Why is an RR (Route Reflector) Needed?
An RR simplifies BGP route exchange between multiple PEs (Provider Edge routers).
Without proper configuration, RRs may filter VPNv4 routes, preventing PEs from learning routes correctly.
Why is the Command peer retain-route-target all Needed?
โ
Ensures that the RR retains all VPNv4 routes.
โ
Prevents the RR from filtering route targets (RTs), allowing full VPN reachability.
โ
Without this command, the RR might not reflect all VPNv4 routes, causing connectivity issues.
Real-World Application:
Enterprise MPLS VPNs: Ensures correct BGP route reflection in an SRv6-based L3VPN.
Carrier Networks: Helps service providers maintain full BGP VPN route distribution.
โ
Reference: Huawei HCIE-Datacom Guide - BGP Route Reflectors in L3VPN over SRv6
NEW QUESTION # 83
Users within a typical VPN can only communicate with each other, not with Internet users, and with Internet.
But VPN individual sites may have access to internet's needs. The correct description of the implementation of VPN interconnection with internet is ?( Multiple choice questions).
Answer: A,B,C,D
NEW QUESTION # 84
On an SR-MPLS network, manually configured prefix SIDs on different devices may conflict with each other.
Assume that there are four routes (prefix/mask SID) as follows.Which of the following routes will be selected according to the conflict handling principle?
Answer: A
Explanation:
Comprehensive and Detailed In-Depth Explanation:
In SR-MPLS, ifprefix SIDs conflict, the following principles are applied:
Prefix with a smaller value (numerically lower SID) wins.
If the prefix length is the same, the lower SID value is selected.
In this case:
Both1.1.1.1/32 2 (A)and1.1.1.1/32 1 (B)have the same prefix length.
SinceSID 1is numericallysmallerthanSID 2,B (1.1.1.1/32 1)is selected.
The other routes (C and D) have different prefixes and do not directly conflict.
NEW QUESTION # 85
Drag the IPsec functions on the left to the corresponding function description on the right.
Answer:
Explanation:
Explanation:
A screenshot of a computer AI-generated content may be incorrect.
IPsec (Internet Protocol Security) provides secure communication over IP networks by implementing multiple security functions.
# Data Origin Authentication:
* Ensures that the sender of the data is genuine and not impersonated.
* Uses techniques such as HMAC (Hash-Based Message Authentication Code).
* Correct Match: "The receiver verifies the identity of the sender." #
# Data Encryption:
* Protects data confidentiality by encrypting packets using AES, 3DES, or other encryption algorithms.
* Ensures that only the intended recipient can decrypt the data.
* Correct Match: "The sender encrypts the data, and the receiver decrypts the data." #
# Data Integrity:
* Ensures that data is not altered in transit.
* Uses cryptographic hashes (e.g., SHA-256) to verify integrity.
* Correct Match: "The receiver verifies received data to determine whether the data has been tampered with." #
# Anti-Replay:
* Protects against packet replay attacks, where an attacker resends captured packets to disrupt communication.
* Uses sequence numbers to detect and reject duplicate packets.
* Correct Match: "The receiver rejects duplicate data packets." #
# Reference: Huawei HCIE Datacom - IPsec Security Functions
NEW QUESTION # 86
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