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| Certification Vendor: | Huawei |
|---|---|
| Exam Name: | HCIP-Datacom-Core Technology V1.0 |
| Exam Number: | H12-821_V1.0 |
| Exam Price: | USD 300 |
| Passing Score: | 600/1000 |
| Related Certifications: | HCIA-Datacom HCIE-Datacom HCIP-Datacom-Advanced Routing & Switching |
| Real Exam Qty: | 60-80 (varies) |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years |
| Exam Format: | Short answer, Drag and drop, True/False, Single-choice questions, Multiple-choice questions |
| Available Languages: | Chinese, English, Japanese |
| Recommended Training: | Huawei Learning Portal - Datacom Track Huawei HCIP-Datacom Training Resources |
| Exam Registration: | Pearson VUE Huawei Exams Huawei Certification Official Portal |
| Sample Questions: | Huawei H12-821_V1.0 Sample Questions |
| Exam Way: | Computer-based exam (onsite test centers or online proctoring depending on region) |
| Pre Condition: | Recommended to hold HCIA-Datacom or equivalent networking knowledge |
| Official Syllabus URL: | https://certification.huawei.com/ |
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NEW QUESTION # 288
A filter named si is configured on a device using the as-path-filter command and is applied to a specified BGP peer. The detailed configurations are as follows:
csharp
Copy
[SW1] ip as-path-filter si permit _65500$
[SW1] bgp 65100
[SW1-bgp] ipv4-family unicast
[SW1-bgp-af-ipv4] peer 10.1.1.2 as-path-filter si import
After the configuration is complete, which of the following statements is true about the way the local device processes the routes received from the peer?
Answer: D
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. Understanding the AS-Path Filter:
* The as-path-filter command is used in BGP to filter routes based on the AS_PATH attribute.
* In this configuration:
* The filter si is defined with the regular expression _65500$.
* The _65500$ expression specifies that the AS_PATH must end with 65500, meaning that the route's last hop must have passed through AS 65500.
2. Option Analysis:
Option A: It accepts only the routes whose AS_Path contains AS 65500.
* Incorrect.
* The _65500$ filter specifically matches routes where AS 65500 is the last AS in the AS_PATH. A route may contain AS 65500 somewhere in the middle of the AS_PATH but will not match this filter unless it is the last AS.
Option B: It accepts only the routes originated from AS 65500.
* Incorrect.
* Routes that originate from AS 65500 have an AS_PATH that starts with 65500. However, the filter
_65500$ only matches routes where AS 65500 is the last AS, not the first AS.
Option C: It accepts only the routes that last pass through AS 65500.
* Correct.
* The _65500$ filter ensures that the AS_PATH ends with 65500. This means that the route must have last passed through AS 65500 before being received by the local BGP router.
Option D: It accepts only the routes forwarded by AS 65500.
* Incorrect.
* While AS 65500 may forward the route, this is not what the filter _65500$ specifically checks for. It only ensures that AS 65500 is the last AS in the AS_PATH.
3. Summary:
* The as-path-filter with _65500$ accepts only the routes where AS 65500 is the last AS in the AS_PATH.
:
Huawei HCIA-Datacom Study Guide, Chapter "BGP Filtering Mechanisms"
RFC 4271: Border Gateway Protocol 4 (BGP-4)
NEW QUESTION # 289
iMaster NCE-Campus supports the management of Huawei network equipment through NETCONF and the management of third-party equipment through SNMP.
Answer: B
NEW QUESTION # 290
Which of the following states will not be experienced during the establishment of a BFD session between devices?
Answer: A
NEW QUESTION # 291
What is the default sending interval of BFD packets?
Answer: A
Explanation:
The default sending interval for BFD (Bidirectional Forwarding Detection) control packets is 100 milliseconds. This interval ensures rapid detection of link faults, providing fast failover and minimizing downtime in network operations .
NEW QUESTION # 292
Three elements of the Server map table of the USG series firewall, excluding
Answer: A
NEW QUESTION # 293
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