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[General] Downloadable H12-891_V1.0 PDF & New H12-891_V1.0 Test Voucher

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【General】 Downloadable H12-891_V1.0 PDF & New H12-891_V1.0 Test Voucher

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Huawei H12-891_V1.0 certification program is designed to help professionals enhance their knowledge and skills in the field of data communication. HCIE-Datacom V1.0 certification exam covers a wide range of topics, including network architecture, routing and switching, IP multicast, MPLS VPN, network security, network management, and many more. HCIE-Datacom V1.0 certification program is an excellent way for professionals to showcase their expertise and to gain recognition for their skills.
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Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Certification Exam is designed for IT professionals who want to validate their skills and knowledge in the field of data communication technologies. HCIE-Datacom V1.0 certification exam is part of Huawei's HCIE (Huawei Certified Internetwork Expert) program, which is a prestigious certification program that is globally recognized by employers and IT professionals. The HCIE-Datacom V1.0 certification is the highest level of certification in data communication technologies offered by Huawei, and passing H12-891_V1.0 Exam demonstrates an advanced level of expertise in the field.
Huawei HCIE-Datacom V1.0 Sample Questions (Q207-Q212):NEW QUESTION # 207
The multicast protocol that can generate multicast distribution trees is ?
  • A. BGP
  • B. OSPF
  • C. PIMV2
  • D. IGMPv2
Answer: C

NEW QUESTION # 208
OSPF is deployed on a campus network to implement network interconnection. The LSDB of R2 is shown in the figure.

What can be determined from the LSDB?
  • A. R2 advertises the default route in the OSPF process.
  • B. Area 1 does not have Type 3 LSAs. The possible cause is that R2 filters Type 3 LSAs in the outbound direction of area 1.
  • C. Area 1 is an NSSA.
  • D. R2 translates Type 7 default route into Type 5 default route.
Answer: C,D
Explanation:
To analyze this question, let's break down the key concepts and the given LSDB (Link State Database) information from the figure:
Understanding the LSDB Output:
The output shows the OSPF LSDB on R2 with Router ID 10.1.123.2.
Area 0.0.0.0 (Area 0) is displayed along with several Link State Advertisements (LSAs) including Router LSAs, Network LSAs, and Summary LSAs.
Area 0.0.0.1 (Area 1) also displays Router LSAs and a Type 7 LSA (NSSA LSA) with Link-State ID 0.0.0.0.
An External LSA (Type 5) with Link-State ID 0.0.0.0 and AdvRouter 10.1.123.2 is also present.
Analysis of Each Option:
Option A: Area 1 is an NSSA.
Correct.
The presence of a Type 7 LSA (NSSA LSA) in the database indicates that Area 1 is configured as an NSSA (Not-So-Stubby Area).
NSSA allows the injection of Type 7 LSAs for external routes while blocking Type 5 LSAs from entering the area.
Option B: R2 translates Type 7 default route into Type 5 default route.
Correct.
In an NSSA, if an ABR (like R2) has the NSSA ASBR capability, it will convert Type 7 LSAs to Type 5 LSAs before injecting them into the backbone area (Area 0).
In the LSDB, we see both a Type 7 LSA (NSSA) and a corresponding Type 5 External LSA, confirming that R2 performs this translation.
Option C: R2 advertises the default route in the OSPF process.
Incorrect.
There is no indication that R2 itself is originating the default route.
The Type 7 LSA in Area 1 and the Type 5 LSA in Area 0 only indicate translation from another source, not R2 advertising it directly.
Option D: Area 1 does not have Type 3 LSAs. The possible cause is that R2 filters Type 3 LSAs in the outbound direction of Area 1.
Incorrect.
In an NSSA area, Type 3 LSAs (Inter-Area Prefix LSAs) are typically not generated for external routes.
The absence of Type 3 LSAs in Area 1 is due to the nature of NSSA itself rather than any filtering configured on R2.

NEW QUESTION # 209
The network administrator is ready to use the 6to4 automatic tunnel to carry IPv6 data on the IPv4 network, and the IPv4 address of the router interface is 1381485210, so the corresponding tunnel address is
2001:8a0e:55d2:1:230:65ff:fe2:9a6?
  • A. False
  • B. True
Answer: A

NEW QUESTION # 210
The figure shows a packet that contains three label headers. Select the values (in decimal notation) of the X, Y, and Z fields, respectively.

Answer:
Explanation:

Explanation:
* X = 0
* Y = 0
* Z = 1
Understanding MPLS Label Headers
# What is MPLS (Multiprotocol Label Switching)?
* MPLS is a high-performance forwarding technology that replaces IP lookups with label switching.
* Packets are forwarded based on labels instead of destination IP addresses.
* MPLS labels are stacked when passing through multiple hops.
# MPLS Label Stack StructureEach MPLS label has four fields:
* Label - 20-bit identifier used for forwarding.
* EXP (Experimental Bits / Traffic Class) - 3-bit field used for QoS (Quality of Service).
* S (Bottom of Stack) - 1-bit flag that indicates whether this is the last (bottom) label in the stack.
* TTL (Time-To-Live) - 8-bit field to prevent loops.
Understanding the EXP Fields (X, Y, Z) in the Figure
* The image shows a packet with three MPLS labels.
* Each label has an EXP field (X, Y, Z) representing the QoS bits.
* By default, MPLS EXP bits are copied from the top label to lower labels unless modified by QoS policies.
* If no QoS policy modifies the EXP bits, they remain the default value of 0.
* The bottom label in the stack (Label 3) often has an EXP value of 1 to indicate specific QoS policies.
Why Are the Answers X = 0, Y = 0, Z = 1?
# X = 0 (Default EXP for Label 1, the top label in the stack).# Y = 0 (EXP for Label 2, unchanged from the default value).# Z = 1 (EXP for Label 3, indicating a QoS setting applied to the bottom label).
Real-World Application:
* MPLS QoS (Quality of Service): EXP values determine packet priority in Service Provider networks.
* Traffic Engineering (TE): MPLS labels guide packets through optimized paths, ensuring low-latency services.
* Enterprise WAN Optimization: MPLS traffic is prioritized for critical applications like VoIP, Video Conferencing, and Cloud Services.
# Reference: Huawei HCIE-Datacom Guide - MPLS Label Stack and QoS EXP Field Processing

NEW QUESTION # 211
In the Huawei SD-WAN Solution, which of the following routing protocols is used to advertise VPN routes between CPEs?
  • A. IS-IS
  • B. BGP
  • C. RIP
  • D. OSPF
Answer: B
Explanation:
BGP in Huawei SD-WAN
Huawei SD-WAN uses BGP (Border Gateway Protocol) as the primary routing protocol to exchange VPN routes between Customer Premises Equipment (CPEs) and the controller.
# Why BGP is Used in SD-WAN?
* Scalability: BGP can handle a large number of VPN routes.
* Policy-Based Routing: BGP allows traffic engineering and policy control across SD-WAN tunnels.
* Multiprotocol Support: Huawei SD-WAN uses MP-BGP to exchange IPv4, IPv6, and VPNv4 routes.

NEW QUESTION # 212
......
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