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Huawei H12-831_V1.0-ENU (HCIP-Datacom-Advanced Routing & Switching Technology V1.0) Certification Exam is an advanced certification program designed for professionals who want to validate their knowledge and skills in advanced routing and switching technologies. HCIP-Datacom-Advanced Routing & Switching Technology V1.0 certification exam focuses on the latest technologies and solutions used in the field of data communication, including advanced routing protocols, switching technologies, and network security.
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NEW QUESTION # 149
The figure shows the logical network architecture of a migration project . The purpose of the migration is to enable terminals in different geographical locations to communicate with each other and deploy the gateway of the terminals on the PE routers .
After the migration is complete, which of the following methods can be used by network engineers to preliminarily check the network connectivity?
Options:
Answer: A,C,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
1. Understanding the Network Setup
* PE1 (Provider Edge 1) is the gateway for network 192.168.1.1/24.
* PE2 (Provider Edge 2) is the gateway for network 192.168.2.1/24.
* A cloud-based backbone connects PE1 and PE2.
* To verify end-to-end communication, engineers need to check reachability between PE1 and PE2.
2. Evaluating Each Answer Option
* Option A: " Configuring NQA on PE1 and PE2, with the destination address being the IP address of each other. "
* # Correct.
* NQA (Network Quality Analysis) is a network testing tool that allows connectivity testing between two devices.
* Configuring NQA between PE1 and PE2 will verify end-to-end reachability.
* Option B: " On PE1 and PE2, checking whether the ARP table contains the ARP entry of the peer network segment. "
* # Incorrect.
* ARP (Address Resolution Protocol) is only used for resolving MAC addresses within the same broadcast domain.
* Since PE1 and PE2 are in different network segments (separated by a routed network), they will not have ARP entries for each other.
* Instead, routing entries should be checked, not ARP.
* Option C: " On PE1, using 192.168.1.1 as the source address to ping 192.168.2.1. "
* # Correct.
* A simple ping test using the source address of PE1 (192.168.1.1) to reach PE2 (192.168.2.1) will verify whether routing between the two locations is functional.
* Option D: " On PE1 and PE2, checking whether there are routes to each other's network segment in the routing tables. "
* # Correct.
* If routing is not configured correctly, PE1 and PE2 will not know how to reach each other.
* Checking the routing table ensures that both PEs have the correct next-hop information.
Final answer:
# A, C, and D are correct.
HCIP-Datacom-Advanced Routing & Switching Technology References:
* Using NQA for Network Connectivity Testing
* Verifying Routing Table Entries for Inter-Network Communication
* Understanding ARP and Its Limitations in Routed Networks
NEW QUESTION # 150
An administrator runs the display mpls Isp command to view LSPs on a device. The command output is shown in the figure. Which of the following statements are true?
Answer: A,B,D
NEW QUESTION # 151
From this figure, it can be known that
Answer: A,B
NEW QUESTION # 152
A network engineer provides a troubleshooting report after rectifying a fault. The actual network is simplified into the one shown in the figure, where R1 and R2 both have OSPF enabled and function as the gateways of PC1 and PC2, respectively.
Given this, which of the following statements are true?
Network Topology:
* R1:
* Interface GE0/0/0: 10.0.12.1/24 (Connected to R2)
* Interface GE0/0/1: 192.168.1.1/24 (Gateway for PC1)
R2:
* Interface GE0/0/0: 10.0.12.2/24 (Connected to R1)
* Interface GE0/0/1: 192.168.1.2/24 (Gateway for PC2)
Options:
Answer: C,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
* Understanding the network connectivity:
* R1 and R2 are connected through 10.0.12.0/24 and running OSPF in Area 0.
* PC1 (192.168.1.11/24) is connected to R1, and PC2 (192.168.1.12/24) is connected to R2.
* Analyzing each option:
* Option A: "R2 cannot ping 10.0.12.1." # Incorrect
* R2 is directly connected to 10.0.12.1/24 (R1) on GE0/0/0, so it can ping this IP without any routing issues.
* Option B: "PC1 and PC2 cannot ping each other." # Correct
* OSPF is only running between R1 and R2. There is no indication that R1 and R2 are redistributing connected routes (192.168.1.0/24 and 192.168.1.0/24) into OSPF.
* As a result, R1 does not know how to reach 192.168.1.12, and R2 does not know how to reach 192.168.1.11, making communication between PC1 and PC2 impossible.
* Option C: "R1 cannot ping 192.168.1.2." # Incorrect
* 192.168.1.2 is directly connected to R2, and if R1 can reach R2 through OSPF, then R1 should be able to ping 192.168.1.2.
* Option D: "R1 cannot ping 192.168.1.12." # Correct
* 192.168.1.12 is connected to R2, but if R2 does not advertise this network to R1, R1 has no route to reach it.
* Since PC1 (192.168.1.11) and PC2 (192.168.1.12) are on different subnets, and there's no redistribution, R1 cannot reach PC2's IP.
Key Takeaways and Fix Recommendations:
* To allow PC1 and PC2 to communicate, R1 and R2 must advertise their directly connected networks (192.168.1.0/24) in OSPF using the network command or by redistributing connected routes into OSPF.
* Command example:
makefile
CopyEdit
R1:
router ospf 1
network 192.168.1.0 0.0.0.255 area 0
R2:
router ospf 1
network 192.168.1.0 0.0.0.255 area 0
* This would allow R1 to learn about PC2's network and R2 to learn about PC1's network, enabling communication.
HCIP-Datacom-Advanced Routing & Switching Technology References:
* HCIP-Datacom Official Certification Guide, Chapter on OSPF Network Design and Troubleshooting.
* Huawei Datacom Training Materials, Section on OSPF Inter-Area and External Route Advertisements.
* Huawei Datacom Configuration Guide, Command Reference for OSPF network advertisement and route redistribution.
NEW QUESTION # 153
The OSPF protocol runs between CE and PE, when CE1 advertises the route of the site to CE2. Which of the following description is wrong?
Answer: D
NEW QUESTION # 154
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