PASS GUARANTEED QUIZ 2025 HUAWEI H12-821_V1.0: HCIP-DATACOM-CORE TECHNOLOGY V1.0–RELIABLE EXAM QUIZZES

Pass Guaranteed Quiz 2025 Huawei H12-821_V1.0: HCIP-Datacom-Core Technology V1.0–Reliable Exam Quizzes

Pass Guaranteed Quiz 2025 Huawei H12-821_V1.0: HCIP-Datacom-Core Technology V1.0–Reliable Exam Quizzes

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Huawei H12-821_V1.0 exam is an intermediate-level certification that tests the candidate's knowledge of data communication core technologies. This includes topics like network architecture, switching and routing, TCP/IP protocols, MPLS VPN, and network security. H12-821_V1.0 Exam consists of 60 multiple-choice questions, and the candidate has 90 minutes to complete it.

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q166-Q171):

NEW QUESTION # 166
On a broadcast IS-IS network shown in the following figure, a DIS needs to be elected to create and update pseudonodes. Which of the following routers is elected as the DIS?

  • A. R2
  • B. R1
  • C. R3
  • D. R4

Answer: C

Explanation:
* Understanding DIS Election in IS-IS:
* On an IS-IS broadcast network, a Designated Intermediate System (DIS) is elected to create and update pseudonodes for efficient communication.
* The election is based on the following criteria:
* DIS Priority: The router with the highest priority is elected as the DIS.
* Router ID (tie-breaker): If priorities are equal, the router with the highest Router ID is elected.
* Analyzing the DIS Priorities and Router IDs:
* R1: Priority = 64, Router ID = 1.1.1.1
* R2: Priority = 1, Router ID = 2.2.2.2
* R3: Priority = 127, Router ID = 3.3.3.3
* R4: Priority = 10, Router ID = 4.4.4.4
* Among the routers, R3 has the highest DIS priority (127), making it the DIS.
* Correct Option:
* Option B (R3): Correct, as R3 has the highest priority.
* Option A (R1): Incorrect, as its priority is lower (64).
* Option C (R4): Incorrect, as its priority is lower (10).
* Option D (R2): Incorrect, as its priority is the lowest (1).
References:
* HCIA-Datacom Study Guide, Chapter: IS-IS DIS Election
* Huawei IS-IS Configuration and DIS Role Details


NEW QUESTION # 167
The figure shows theVRRP status switchover events. Match these events with their sequence numbers.

Answer:

Explanation:

Explanation:
1 # A Startup message with a priority of 255 is received.
2 # A Startup message with a priority less than 255 is received.
3 # A Shutdown message is received.
4 # The Master_Down timer expires, an Advertisement packet with the priority of 0 is received, or a packet with a priority lower than the local priority is received.
5 # A packet with a priority higher than the local priority is received.
6 # A Shutdown message is received.
#Reference:Huawei HCIA-Datacom Study Guide, VRRP Status Transitions.


NEW QUESTION # 168
When a routing policy is used to filter routes, which of the following route prefixes will be denied by the IP prefix below?

  • A. 1.1.1.2/16
  • B. 1.1.1.1/26
  • C. 1.1.1.1/24
  • D. 1.1.1.1/32

Answer: A,C

Explanation:
The prefix list permits the prefix 1.1.1.1/24 with a mask length greater than or equal to /26 and less than or equal to /32. This means only prefixes with the base 1.1.1.1 and mask lengths between /26 and /32 will be permitted. Routes like 1.1.1.2/16 and 1.1.1.1/24 do not meet the mask length criteria, so they will be denied.
Conversely, routes like 1.1.1.1/26 and 1.1.1.1/32 satisfy the condition and will be permitted .


NEW QUESTION # 169
Which of the following statements regarding the LSA age field are true?

  • A. If the LS age of a LSA has reached the LSRefreshTime (30 minutes), any router can regenerate an instance of this LSA again.
  • B. If the LS age of a LSA has reached the LSRefreshTime (30 minutes), the originator of this LSA needs to regenerate an instance of this LSA again.
  • C. The unit of this field is seconds. In a LSDB, the LS age of a LSA decreases with time.
  • D. The unit of this field is seconds. In a LSDB, the LS age of a LSA increases with time.

Answer: C


NEW QUESTION # 170
Match the following IPv4 multicast protocols with the corresponding functions.

Answer:

Explanation:

Explanation:
IGMP: Manages IPv4 multicast group members and runs on the multicast network's last segment (that is, the network segment where a Layer 3 network device is connected to user hosts).
PIM: Sends multicast data over the network to the multicast device that is connected to group members that have requested the multicast data, implementing multicast data forwarding based on routes.
IGMP Snooping: Manages and controls the forwarding of multicast data packets to effectively suppress the flooding of multicast data packets on the Layer 2 network.
IGMP (Internet Group Management Protocol):
* IGMP is used by hosts and adjacent multicast routers to establish and maintain multicast group memberships on a local subnet.
* It allows a host to inform a multicast router of its desire to receive multicast traffic for a specific group.
* It operates at Layer 3 and runs on the last segment of the network.


NEW QUESTION # 171
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