Huawei HCIE-Datacom V1.0 - H12-891_V1.0 Exam Practice Test
Port isolation can be deployed on an Ethernet network to implement both Layer 2 communication and Layer 3 isolation, making the networking more flexible.
Correct Answer: B
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The following figure shows the inter-AS MPLS VPN Option B solution. If ASBR-PE1 and ASBR-PE2 only transmit VPNv4 routes, you can run the following command on ASBR-PE1:
[ASBR-PE1-bgp-af-vpnv4] undo peer 10.0.34.4 enable
[ASBR-PE1-bgp-af-vpnv4] undo peer 10.0.34.4 enable
Correct Answer: A
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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?
Correct Answer: D
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The BGP ORF function can be used to control the maximum number of routes that can be sent by a BGP peer. To achieve this, which of the following tools is used to send such a route list to BGP peers?
Correct Answer: D
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Drag the IPsec functions on the left to the corresponding function description on the right.
Correct Answer:
Based on the figure, which of the following statements are correct?
<R1>tracert 172.17.1.5
1 10.1.12.2 40 ms 10 ms 10 ms
2 10.1.24.2 30 ms 20 ms 20 ms
3 10.1.34.1 20 ms 20 ms 20 ms
4 10.1.13.1 20 ms 20 ms 10 ms
5 10.1.12.2 20 ms 30 ms 20 ms
6 10.1.24.2 30 ms 30 ms 30 ms
7 10.1.34.1 50 ms 40 ms 40 ms
8 10.1.13.1 20 ms 30 ms 30 ms
<R1>tracert 172.17.1.5
1 10.1.12.2 40 ms 10 ms 10 ms
2 10.1.24.2 30 ms 20 ms 20 ms
3 10.1.34.1 20 ms 20 ms 20 ms
4 10.1.13.1 20 ms 20 ms 10 ms
5 10.1.12.2 20 ms 30 ms 20 ms
6 10.1.24.2 30 ms 30 ms 30 ms
7 10.1.34.1 50 ms 40 ms 40 ms
8 10.1.13.1 20 ms 30 ms 30 ms
Correct Answer: B
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Fill in Blank
Huawei Open Programmability System (OPS) uses HTTP methods to access managed objects to manage network devices. HTTP is the most widely used network transmission protocol on the Internet. By default, which TCP port number is used?
Huawei Open Programmability System (OPS) uses HTTP methods to access managed objects to manage network devices. HTTP is the most widely used network transmission protocol on the Internet. By default, which TCP port number is used?
Correct Answer:
80
Explanation:
Understanding Huawei OPS and HTTP Communication
🔹 What is Huawei OPS?
Huawei Open Programmability System (OPS) enables API-based network automation using standard HTTP requests.
It supports NETCONF, RESTCONF, and RESTful APIs for device management.
🔹 Why TCP Port 80?
Port 80 is the default port for HTTP traffic.
Used for web-based device management, API calls, and telemetry data exchange.
If HTTPS (secure version) is used, the default port is 443.
Why is the Answer 80?
✅ HTTP operates on TCP port 80 by default.
✅ Huawei OPS uses HTTP APIs to manage network devices, making port 80 the standard option.
Real-World Application:
Cloud-Native Network Automation: Uses HTTP-based APIs for SDN controllers and automation tools.
Network Device Management: Enables remote configuration and monitoring over HTTP APIs.
✅ Reference: Huawei HCIE-Datacom Guide - Open Programmability System (OPS) & HTTP Communication
Explanation:
Understanding Huawei OPS and HTTP Communication
🔹 What is Huawei OPS?
Huawei Open Programmability System (OPS) enables API-based network automation using standard HTTP requests.
It supports NETCONF, RESTCONF, and RESTful APIs for device management.
🔹 Why TCP Port 80?
Port 80 is the default port for HTTP traffic.
Used for web-based device management, API calls, and telemetry data exchange.
If HTTPS (secure version) is used, the default port is 443.
Why is the Answer 80?
✅ HTTP operates on TCP port 80 by default.
✅ Huawei OPS uses HTTP APIs to manage network devices, making port 80 the standard option.
Real-World Application:
Cloud-Native Network Automation: Uses HTTP-based APIs for SDN controllers and automation tools.
Network Device Management: Enables remote configuration and monitoring over HTTP APIs.
✅ Reference: Huawei HCIE-Datacom Guide - Open Programmability System (OPS) & HTTP Communication
In BGP4+, what is the content of the next hop network address field carried in the MP_REACH_NLRI attribute of an Update packet?
Correct Answer: B
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BGP Link State (BGP-LS) introduces a new NLRI into BGP. The NLRI carries link, node, topology prefix, and other information, and is also referred to as the link state NLRI.
Correct Answer: B
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