H12-831_V1.0 Standard Answers & H12-831_V1.0 Exam Tutorials

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Huawei H12-831_V1.0 Exam Syllabus Topics:

Section	Weight	Objectives
Advanced BGP Features	10%	- BGP route selection and attributes - Routing policies and filtering - BGP multi-homing and load balancing - Route reflectors and confederations
Network O&M	7%	- Routine maintenance procedures - Network monitoring and performance analysis - Configuration management and backup - Log and alarm management
Advanced IGP Features	17%	- IS-IS advanced features 1. Convergence optimization 2. Route aggregation 3. Level-1/Level-2 routing control - OSPF advanced features 1. Special area types and applications 2. Fast convergence technologies 3. Route summarization and filtering
IPv6 Routing	20%	- IPv6 address planning and configuration - OSPFv3 and IS-IS for IPv6 - BGP4+ for IPv6 - Transition mechanisms (dual-stack, tunnel, translation)
Network Cutover	7%	- Cutover planning and risk assessment - Pre-cutover verification - Implementation and rollback strategy - Post-cutover validation
Network Troubleshooting	10%	- Switching and link fault handling - Structured troubleshooting methodology - Routing protocol fault diagnosis - Performance and service fault resolution
Advanced Ethernet Technologies	10%	- QinQ and VLAN mapping - Ethernet link aggregation and reliability - Port isolation and security features - VLAN aggregation and MUX VLAN
MPLS Technologies	19%	- MPLS VPN (L3VPN, L2VPN) - MPLS fundamentals and label distribution - MPLS OAM and protection - LDP and RSVP-TE protocols

>> H12-831_V1.0 Standard Answers <<

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Huawei HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Sample Questions (Q36-Q41):

NEW QUESTION # 36
Senior engineers with rich experience can quickly solve faults only by relying on experience, and the efficiency is very high.

A. FALSE
B. TRUE

Answer: B

NEW QUESTION # 37
The network administrator configures DHCP snooping on an access switch. Which of the following solutions can be used to reduce the impact of denial of service (DoS) on the DHCP server caused by malicious IP address requests of attackers?

A. Enable the device to generate static MAC address entries for interfaces based on DHCP snooping binding entries.
B. Configure the switch interface connected to the authorized DHCP server as a trusted interface.
C. Configure DHCP snooping to limit the number of MAC addresses learned by interfaces on the switch.
D. Configure DHCP snooping to check the CHADDR field in DHCP request packets.

Answer: B,C,D

Explanation:
To mitigate DHCP-based DoS attacks, Huawei switches provide several protective measures through DHCP Snooping :
# A. Configure trusted interfaces - Only ports connected to authorized DHCP servers should be marked as trusted . All other interfaces are untrusted and DHCP replies (from rogue servers) will be discarded.
# C. CHADDR field verification - DHCP snooping can check the CHADDR field to ensure that the MAC address in the DHCP packet matches the one learned on the port, helping prevent spoofing attacks.
# D. Limit MAC address learning - Limits the number of dynamic MAC addresses a port can learn, preventing flooding of DHCP requests with spoofed MACs.
# B is incorrect - While DHCP snooping can generate bindings, it does not generate static MAC address entries based on these bindings. Static MAC addresses must be manually configured or generated via port security, not DHCP snooping.
# Official Reference from Huawei:
" To prevent DoS attacks caused by a large number of DHCP requests, DHCP snooping allows rate limiting, CHADDR field verification, and trusted port configuration. "
- [Huawei HCIA-Datacom Certification Guide - DHCP Snooping Chapter]

NEW QUESTION # 38
In the OSPFv3 network shown in the figure, area 1 is the Stub area.

By default, which of the following types of LSAs is generated by only one router?

A. Network-LSA
B. Link-LSA
C. Inter-Area-Prefix-LSA
D. Intra-Area-Prefix-LSA

Answer: A

NEW QUESTION # 39
The figure shows the Router-LSA generated by a router. Which of the following statements are true based on the LSA?

A. At least one interface on the router belongs to area 0.
B. At least one interface on the router belongs to a stub area.
C. The router is an ABR.
D. The router is an ASBR.

Answer: A,C

NEW QUESTION # 40
IPSG can defend against IP address spoofing attacks. Which of the following descriptions of IPSG are wrong? (Multiple choice)

A. IPSG supports application on Layer 2 physical interface or VLAN, and also supports application on Layer 3 physical interface or logical interface such as VLANIF.
B. The trusted interface/untrusted interface of IPSG is the trusted interface/untrusted interface in DHCP Snooping.
C. IPSG can use the DHCP Snooping binding table to match the message
D. IPSG can match and check the IP, ARP, PPPoE and other messages sent by the host

Answer: A,B

NEW QUESTION # 41
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