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Huawei HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Sample Questions (Q25-Q30):

NEW QUESTION # 25
MPLS-straight is slower than IP forwarding.

A. True
B. False

Answer: B

NEW QUESTION # 26
Which of the following is not included in OSPF Hello packets?
Options:

A. Network Mask
B. Area ID
C. Router ID
D. Process ID

Answer: D

Explanation:
Comprehensive and Detailed In-Depth Explanation:
* OSPF Hello packets are used to establish and maintain neighbor relationships between routers.
* Hello packets contain:# Router ID - Unique identifier for the OSPF router.# Area ID - Defines the OSPF area to which the router belongs.# Network Mask - Helps ensure routers are on the same subnet.
* Process ID is NOT included because the OSPF Process ID is a local parameter used only within the router itself and is not exchanged between routers.
# Reference: HCIP-Datacom Advanced Routing & Switching Technology - OSPF Packet Types

NEW QUESTION # 27
the configuration file of the device. Is the following statement D wrong?

A. Port connected to user terminal equipmentMSTPWhether it is disabled or configured as an edge port
B. Check if the port is added to the correct oneWLAN
C. Regardless of whether the device is configured with apricotBPDU Tunnel,neither will be correctMSTPmake an impact
D. Check port configuration to confirm enableMSTPWhether the port is enabled with the protocol packet sending command. Such as:bpdu enable

Answer: C

NEW QUESTION # 28
On the OSPF network shown in the figure, area 1 is an NSSA, area 2 is a common area, and R4 imports an external route 10.0.4.4/32. The router ID of each router is 10.0.X.X, where X is the router number. If the asbr-summary 10.0.4.0 255.255.255.0 command is run in the OSPF processes of R1 and R3, which of the following routers have the route 10.0.4.0/24 in their routing tables?

A. R5
B. R1
C. R3
D. R2

Answer: B,C

Explanation:
Step 1: Understanding OSPF Areas and Summarization
* Area 1 (NSSA - Not So Stubby Area)
* Allows external routes but converts Type-5 LSAs into Type-7 LSAs.
* External routes must be translated by an ABR into Type-5 LSAs before being propagated into other areas.
* Area 2 (Common Area - Regular OSPF Area)
* Supports both inter-area and external routes.
* asbr-summary 10.0.4.0 255.255.255.0 Command
* This command summarizes all external routes within 10.0.4.0/24 into a single summarized route.
* Since it is applied on R1 and R3, these routers will advertise 10.0.4.0/24 instead of 10.0.4.4/32 to their respective areas.
Step 2: Route Distribution Analysis
* R4 (Originating Router in NSSA - Area 1)
* R4 injects 10.0.4.4/32 as a Type-7 LSA into Area 1.
* R1 (ABR between Area 1 & Area 0, Summarizing Route)
* Since R1 is an ABR, it translates Type-7 LSAs from Area 1 into a summarized Type-5 LSA (10.0.4.0/24) for Area 0.
* # R1 has 10.0.4.0/24 in its routing table.
* R2 (Inside Backbone Area 0, No ASBR Summary Applied Here)
* R2 only receives Type-5 LSAs from R1 but does not summarize them.
* Since R2 is not explicitly summarizing, it will likely still see 10.0.4.4/32 rather than 10.0.4.0
/24.
* # R2 does not have 10.0.4.0/24.
* R3 (ABR between Area 0 & Area 2, Summarizing Route)
* R3 is also an ABR and has the asbr-summary 10.0.4.0/24 command configured.
* It will advertise the summarized route 10.0.4.0/24 into Area 2.
* # R3 has 10.0.4.0/24 in its routing table.
* R5 (Inside Area 2, No Direct Connectivity to External Routes)
* Since R3 summarizes 10.0.4.0/24, R5 (inside Area 2) will receive only summarized routes.
* # R5 has 10.0.4.0/24.
Final answer: # R1, R3 (Option A, C)
References:
* HCIP-Datacom-Advanced Routing & Switching Technology V1.0 - OSPF Route Summarization
* OSPF NSSA and Type-7 to Type-5 LSA Translation

NEW QUESTION # 29
On the network shown in the figure, SW3 is the user gateway and DHCP relay agent.
The administrator plans to configure DHCP snooping on SW3 to prevent DHCP attacks.

Which of the following commands does not need to be configured on SW3?

A. [SW3-GigabitEthernet0/0/1] dhcp snooping enable
B. [SW3] dhcp snooping enable ipv4
C. [SW3-GigabitEthernet0/0/3] dhcp snooping trusted
D. [SW3-GigabitEthernet0/0/2] dhcp snooping enable

Answer: B

Explanation:
Comprehensive and Detailed In-Depth Explanation:
Understanding DHCP Snooping and its Configuration
1. What is DHCP Snooping?
* DHCP Snooping is a security feature that helps prevent rogue DHCP servers from providing false IP configurations to clients.
* It classifies switch ports as either:
* Trusted (allowing DHCP replies from legitimate DHCP servers or relay agents).
* Untrusted (blocking unauthorized DHCP responses from clients or attackers).
Analysis of the Commands
# A. [SW3-GigabitEthernet0/0/2] dhcp snooping enable (Required)
* Interface GigabitEthernet0/0/2 is connected to a DHCP client (PC2).
* DHCP snooping must be enabled on this interface to filter DHCP messages and prevent rogue DHCP servers.
* Since PC2 is a client, this port should remain UNTRUSTED.
# This command is required.
# B. [SW3] dhcp snooping enable ipv4 (Not Required - Correct Answer)
* The correct command to enable DHCP Snooping globally on Huawei switches is:
* dhcp snooping enable
* There is no need to explicitly specify ipv4 since DHCP is inherently an IPv4-based protocol.
# This command is unnecessary, making it the correct answer.
# C. [SW3-GigabitEthernet0/0/3] dhcp snooping trusted (Required)
* GigabitEthernet0/0/3 is connected to the DHCP relay agent, which forwards DHCP messages between clients and the DHCP server.
* This port must be configured as "trusted" to allow DHCP responses from the relay or the DHCP server.
# This command is required.
# D. [SW3-GigabitEthernet0/0/1] dhcp snooping enable (Required)
* GigabitEthernet0/0/1 is connected to a DHCP client (PC1).
* Similar to Port 0/0/2, DHCP snooping must be enabled on this interface to filter DHCP messages and prevent rogue DHCP responses.
# This command is required.
Final Conclusion:
# A. Required (PC2's port needs DHCP snooping enabled).# B. Not required (Incorrect command syntax, ipv4 is unnecessary).# C. Required (Port connected to DHCP relay must be trusted).# D.
Required (PC1's port needs DHCP snooping enabled).
Thus, the correct answer is: B. [SW3] dhcp snooping enable ipv4.

NEW QUESTION # 30
......

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