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Review H12-821_V1.0 Guide, H12-821_V1.0 Valid Test Fee, H12-821_V1.0 Pdf Dumps, H12-821_V1.0 Actual Exam Dumps, VCE H12-821_V1.0 Dumps

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Huawei H12-821_V1.0 Certification Exam is an important certification for IT professionals who are looking to enhance their career in the field of datacom core technology. HCIP-Datacom-Core Technology V1.0 certification provides the candidate with the knowledge and skills required to design, implement, and maintain large-scale datacom networks. HCIP-Datacom-Core Technology V1.0 certification also helps the candidate to stay updated with the latest trends and technologies in the field of datacom core technology.

Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q1037-Q1042):

NEW QUESTION # 1037
Which of the following description about AS_PATH is wrong?

  • A. AS_PATH is a recognized mandatory attribute in BGP
  • B. AS_PATH refers to the list of ASs experienced by BGP routes in the transmitted path
  • C. BGP will not accept the route that contains this AS Number in the AS_PATH property
  • D. When there are two or more routes to the same destination in the router, these routes can compare the advantages and disadvantages of each other through this attribute, and the path with the longer AS_ PATHA is super-priority

Answer: D


NEW QUESTION # 1038
Which of the following configurations are not mandatory when an administrator configures VRRP?

  • A. Preemption delay
  • B. Preemption mode
  • C. Virtual router priority
  • D. Virtual IP address

Answer: D


NEW QUESTION # 1039
When receiving a packet, a router matches the packet against ACL rules. The ACL matching result is either Matched or Unmatched. If the matching result is Unmatched, which of the following are possible causes?

  • A. The packet matches an ACL rule with the deny action.
  • B. All rules are traversed but no matching rule is found.
  • C. An ACL is configured but it does not contain any rules.
  • D. No ACL is configured on the device.

Answer: B,C,D

Explanation:
Comprehensive and Detailed In-Depth Explanation:
* When a packet is checked against an Access Control List (ACL), it is processed based on rule matches.
* "Unmatched" scenarios occur if:
* A. TRUE # The packet does not match any ACL rule.
* C. TRUE # No ACL is configured, so there are no rules to match.
* D. TRUE # An empty ACL exists, meaning no rules are defined.
* B is incorrect because if the packet matches a deny rule, it is "matched" and explicitly dropped, not "unmatched".
# Reference: Huawei HCIA-Datacom Study Guide, ACL Rule Matching and Processing Logic.


NEW QUESTION # 1040
On an STP network, the root bridge, root port, and designated port are elected in sequence. The election rules of these ports are different. List the steps for electing the root port in sequence.

Answer:

Explanation:

Explanation:
The sequence of steps for electing the root port in an STP (Spanning Tree Protocol) network is as follows:
* Bridge ID Comparison: The Bridge ID (BID) is compared between the bridges in the network. A smaller value indicates a higher priority, meaning the bridge with the lowest Bridge ID is elected as the root bridge.
* RPC (Root Path Cost) Comparison: The path cost to reach the root bridge is calculated. The router with the lowest Root Path Cost (RPC) to the root bridge will have a higher priority for the election of the root port.
* Peer BID Comparison: If there is a tie in the Root Path Cost, the Peer BID is compared. A smaller Peer BID indicates a higher priority. This step ensures that if two routers have the same RPC, the one with the lower Peer Bridge ID wins.
* Local BID Comparison: If there is still a tie, the Local BID is compared. A smaller Local BID indicates a higher priority. This final step ensures that the router with the lowest local identifier is selected.
* Bridge ID Comparison:The first step in electing the root port is comparing the Bridge IDs. The bridge with the lowest Bridge ID becomes the root bridge. The Bridge ID is made up of the bridge priority and MAC address. The root bridge is the center of the network for STP, and all other ports will calculate their paths based on this root.
* HCIP-Datacom-Core Technology Training Material (STP Concepts and Election Process).
RPC (Root Path Cost) Comparison:Once the root bridge is selected, the network needs to determine the best path to the root. Each port on a non-root bridge will calculate the Root Path Cost (RPC), which is the cumulative cost of reaching the root bridge from that port. The root port is the one that has the lowest RPC, meaning it provides the best path to the root bridge.
Reference: HCIP-Datacom-Core Technology Training Material (STP Path Selection).
Peer BID Comparison:If multiple paths have the same Root Path Cost, the next step is to compare the Peer Bridge IDs. The bridge with the lowest Peer BID is chosen as the root port. This ensures a tie-breaking mechanism based on the neighbor's identifier.
Reference: HCIP-Datacom-Core Technology Training Material (STP Election Process).
Local BID Comparison:If there is still a tie after comparing the Peer Bridge IDs, the Local Bridge ID is compared. A smaller Local BID indicates a higher priority, and the port with the lower Local BID will be selected as the root port.
Reference: HCIP-Datacom-Core Technology Training Material (STP Local Port Selection).


NEW QUESTION # 1041
The IP prefix list configuration on a Huawei router is shown below. Which of the following routes can match this IP prefix list?
bash
Copy
[huawei] ip ip-prefix test index 10 permit 10.0.0.0 8 less-equal 32

  • A. 10.0.0.0/16
  • B. 10.1.1.1/32
  • C. 10.1.1.0/24
  • D. 10.1.1.0/6

Answer: A,B,C

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. Understanding the Prefix List Configuration:
The command ip ip-prefix test index 10 permit 10.0.0.0 8 less-equal 32 defines the following:
* The prefix base is 10.0.0.0 with a mask length of 8 bits.
* The less-equal 32 condition allows routes with mask lengths ranging from 8 to 32 bits to match.
2. Analysis of Each Route:
Option A: 10.1.1.1/32
* Correct.
* The prefix 10.1.1.1/32 falls within the 10.0.0.0/8 network range and has a mask length of 32 bits, which satisfies the less-equal 32 condition.
Option B: 10.1.1.0/6
* Incorrect.
* The prefix 10.1.1.0/6 has a mask length of 6 bits, which is shorter than the base prefix length of 8. It does not satisfy the condition.
Option C: 10.1.1.0/24
* Correct.
* The prefix 10.1.1.0/24 falls within the 10.0.0.0/8 network range and has a mask length of 24 bits, which satisfies the less-equal 32 condition.
Option D: 10.0.0.0/16
* Correct.
* The prefix 10.0.0.0/16 falls within the 10.0.0.0/8 network range and has a mask length of 16 bits, which satisfies the less-equal 32 condition.
3. Summary:
* The prefixes that match the configuration are 10.1.1.1/32, 10.1.1.0/24, and 10.0.0.0/16.


NEW QUESTION # 1042
......

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