ONE OF THE BEST WAYS TO PREPARE FOR THE H12-821_V1.0 HCIP-DATACOM-CORE TECHNOLOGY V1.0 EXAM

One of the Best Ways to Prepare For the H12-821_V1.0 HCIP-Datacom-Core Technology V1.0 Exam

One of the Best Ways to Prepare For the H12-821_V1.0 HCIP-Datacom-Core Technology V1.0 Exam

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q239-Q244):

NEW QUESTION # 239
The IP prefix list configuration on a Huawei router is shown below. Which of the following routes can match this IP prefix list?
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[huawei] ip ip-prefix test index 10 permit 10.0.0.0 8 less-equal 32

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

Answer: A,B,D

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 # 240
As shown in the following figure, a new AP is deployed In dual link MSB networking (load balancing mode).
Which AC will the connect to?

  • A. Random access
  • B. None
  • C. AC2
  • D. AC1

Answer: C

Explanation:
In dual-link MSB networking with load balancing, the new AP will connect to the AC with the lower number of connected APs. In this case, AC2 has only 20 connected APs, while AC1 has 100. Therefore, the new AP will connect to AC2 .


NEW QUESTION # 241
On the campus OSPF network shown in the following figure, the interfaces connecting the five routers are GE interfaces, and their costs are not changed. The import-route command is run on R1. After the network converges, the route to the server at 192.168.1.0/24 is queried on R2. Which of the following is the cost of this route?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: D

Explanation:
Understanding the Network Setup:
* The OSPF network consists of three areas (Area 1, Area 0, and Area 2).
* The server's subnet 192.168.1.0/24 is directly connected to R1 and imported into OSPF using the command:import-route direct type 1 cost 2 The server's subnet 192.168.1.0/24 is directly connected to R1 and imported into OSPF using the command:import-route direct type 1 cost 2 The server's subnet 192.168.1.0/24 is directly connected to R1 and imported into OSPF using the command:import-route direct type 1 cost 2
* The type 1 specifies the route as an OSPF Type 1 external route, meaning both the external cost and the internal OSPF cost will be included when calculating the total cost.
* The external cost specified for the imported route is 2.
* Cost Calculation to R2:
* The interfaces between the routers are GE interfaces, and the default cost for GE interfaces is 1.
* The path from R2 to the server goes through the following hops:
* R2 # R1: Cost = 1 (intra-area link).
* R1 # Server: External cost = 2 (specified in the import-route command).
* Total cost to R2:Intra-area cost (1) + External cost (2) = 3
Total cost to R2:Intra-area cost (1) + External cost (2) = 3
Total cost to R2:Intra-area cost (1) + External cost (2) = 3
* Verification of Each Option:
* Option A (2): Incorrect. This only accounts for the external cost, ignoring the internal OSPF cost.
* Option B (4): Incorrect. This overestimates the cost by adding an extra hop.
* Option C (3): Correct. The total cost is 3 (1 for the intra-area link + 2 for the external cost).
* Option D (1): Incorrect. This ignores the external cost of the imported route.
References:
* HCIA-Datacom Study Guide, Chapter: OSPF Route Types and Cost Calculation
* Huawei OSPF Cost Configuration Details


NEW QUESTION # 242
On an STP network, only the designated port processes inferior BPDUs. On an RSTP network, a port with any role processes inferior BPDUs.

  • A. TRUE
  • B. FALSE

Answer: A

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
* STP and RSTP Behavior:
* STP: Only the designated port processes inferior BPDUs. Inferior BPDUs are received from downstream switches and typically indicate topology changes.
* RSTP: All ports, regardless of role (root, designated, or alternate), process inferior BPDUs to ensure faster convergence.
* Behavior Difference:
* RSTP improves convergence by allowing any port to process inferior BPDUs, unlike STP, which restricts this function to designated ports.
References:
* HCIA-Datacom Study Guide, Chapter: STP vs RSTP
Huawei STP and RSTP Configuration Comparison


NEW QUESTION # 243
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:
A screenshot of a computer Description automatically generated
Explanation of Root Port Election in STP:
In a Spanning Tree Protocol (STP) network, theRoot Portis selected on each switch (except the Root Bridge).
The Root Port is the port with thelowest path costto the Root Bridge. If there is a tie in path cost, the following criteria are used in sequence to break the tie:
Steps for Root Port Election in Sequence:
RPC Comparison (Root Path Cost):
The port with thelowest Root Path Costis preferred.
Root Path Cost is the cumulative cost of the path to the Root Bridge.
Peer BID (Bridge ID) Comparison:
If the Root Path Costs are equal, theBridge IDof the connected switch (peer) is compared.
The port connecting to the switch with thelower Bridge IDis preferred.
Peer PID (Port ID) Comparison:
If the Bridge IDs are equal, thePort IDof the peer's sending port is compared.
The port connecting to thelower Port IDis preferred.
Local PID (Port ID) Comparison:
If all else is equal, theLocal Port IDof the switch is used.
The port with thelower Local Port IDis selected.


NEW QUESTION # 244
......

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