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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.
To take the exam, candidates must have a solid understanding of network fundamentals, including TCP/IP, routing protocols, and switching technologies. They should also have hands-on experience with Huawei network products and solutions. H12-821_V1.0 Exam consists of 60 multiple-choice questions that must be completed within 90 minutes.
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NEW QUESTION # 33
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.
NEW QUESTION # 34
On a network, each router has a local core routing table and protocol routing tables. A routing entry in the local core routing table has multiple key fields. Which of the following are included?
Answer: A,B,D
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
* Routing Table Structure:
* Routers maintain a local core routing table and separate protocol routing tables for OSPF, BGP, etc.
* The local core routing table stores optimal routes selected based on metrics, protocol preferences, and administrative distances.
* Fields in the Core Routing Table:
* Destination Address (A): Indicates the destination network or host.
* Routing Protocol Preference (B): Determines the priority of routing protocols (e.g., OSPF > RIP).
* Routing Protocol (D): Specifies the protocol (e.g., OSPF, BGP) that contributed the route.
* Inbound Interface: This is stored in the protocol-specific routing table but not in the local core table.
References:
* HCIA-Datacom Study Guide, Chapter: Routing Table Management
Huawei Routing Fundamentals
NEW QUESTION # 35
NETCONF is a network configuration protocol that automates network configuration in a programmable manner, simplifying and accelerating network service deployment. Which of the following operations can be performed by using this protocol?
Answer: A,B,C,D
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. What is NETCONF?
NETCONF (Network Configuration Protocol) is an XML-based protocol used for network device configuration and management.
It enables reading, modifying, deleting, and restoring configurations programmatically.
2. Supported Operations:
Option A: Modifying configurations
Correct.
NETCONF allows you to modify existing configurations on network devices.
Option B: Deleting configurations
Correct.
Configurations can be deleted using NETCONF operations.
Option C: Restoring configurations
Correct.
NETCONF can restore configurations by applying previously saved configuration data.
Option D: Backing up configurations
Correct.
NETCONF can retrieve and save the current configuration as a backup.
3. Summary:
NETCONF supports all listed operations: modifying, deleting, restoring, and backing up configurations.
Reference:
Huawei HCIA-Datacom Study Guide, Chapter "NETCONF and Network Automation."
NEW QUESTION # 36
An enterprise uses Huawei routers to deploy an IS-IS network for network-wide communication. An engineer wants to change the interface cost to control route selection. By default, which of the following values is the maximum cost that can be configured?
Answer: A
Explanation:
Comprehensive and Detailed in-depth Step-by-Step Explanation:In IS-IS, the interface cost is a metric used to determine the best path to a destination. Lower-cost paths are preferred over higher-cost paths. By default, IS-IS interface costs can range from 1 to 63.
* Default Cost Range:
* IS-IS allows the configuration of interface costs within the range of 1-63 by default. This range is sufficient for most networks.
* Maximum Configurable Cost:
* The maximum value that can be configured by default is 63. If there is a requirement for a higher cost range, the metric-style can be changed to wide, which allows the cost range to extend beyond 63.
* Option A (67): Incorrect. 67 is not the maximum default value.
* Option B (63): Correct. This is the maximum default cost value.
* Option C (64): Incorrect. This is beyond the default range.
* Option D (68): Incorrect. This is beyond the default range.
References:
* Huawei HCIA-Datacom Study Guide, Chapter on "IS-IS Cost and Route Selection".
* RFC 5308 - Routing IPv6 with IS-IS.
NEW QUESTION # 37
On the OSPF network shown in the figure, an adjacency has been established between R1 and R2. An engineer configures the commands in the figure on R2. In this case, which of the following routing entries may exist in the routing table of R2?
Answer: A,C,D
Explanation:
Configuration Analysis:
* On R2, the following configuration has been applied:
acl 200
rule deny source 10.1.0.0 0.0.3.0
rule permit
#
ospf 1
filter-policy 2000 import
* This configuration uses ACL 200 to filter routes during import into the OSPF routing table on R2.
* Rule deny source 10.1.0.0 0.0.3.0: Blocks routes in the range 10.1.0.0/24 to 10.1.3.0/24 (inclusive).
* Rule permit: Allows all other routes to be imported.
* Impact of ACL 200 on Route Import:
* 10.1.0.0/24 to 10.1.3.0/24: These subnets are explicitly denied by ACL 200 and will not appear in R2's routing table.
* 10.1.4.0/24 and beyond: These subnets are permitted by the rule permit statement and will be imported into R2's routing table.
* Routing Table Entries on R2:
* Option A (10.1.4.0/24): Exists in R2's routing table because it is permitted.
* Option B (10.1.3.0/24): Does not exist because it is denied by ACL 200.
* Option C (10.1.2.0/24): Does not exist because it is denied by ACL 200.
* Option D (10.1.1.0/24): Does not exist because it is denied by ACL 200.
* A (10.1.4.0/24)
Correct Options:References:
* HCIA-Datacom Study Guide, Chapter: OSPF Route Filtering
* Huawei ACL Configuration for Route Policies
NEW QUESTION # 38
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