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Huawei H12-821_V1.0 (HCIP-Datacom-Core Technology V1.0) exam is designed to test the knowledge and skills of IT professionals in the field of data communication. H12-821_V1.0 exam covers a wide range of topics, including network architecture, data transmission, network security, and network maintenance. Passing the exam proves the candidate's expertise in designing, deploying, and managing data communication networks.

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q168-Q173):

NEW QUESTION # 168
On the network shown in the following figure, the management VLAN is VLAN 10, and the AP is configured to obtain an IP address on the network segment 10.1.1.0/24 through DHCP. The AP, AC, and AR function as the DHCP client, DHCP relay agent, and DHCP server, respectively. Which of the following configurations for the DHCP relay agent and DHCP server are correct?

A. [AR] ip pool AP
[AR-ip-pool-AP] network 172.21.1.0 mask 24
[AR-ip-pool-AP] gateway-list 172.21.1.2
[AR-ip-pool-AP] excluded-ip-address 172.21.1.1
[AR-ip-pool-AP] quit
[AR] interface GigabitEthernet 0/0/1
[AR-GigabitEthernetO/0/1] dhcp select global
[AR-GigabitEthernetO/0/1] quit
[AR] ip route-static 10.1.1.0 255.255.255.0 172.21.1.1
B. [AC] dhcp server group AP
[AC-dhcp-server-group-AP] dhcp-server 10.1.1.2
[AC-dhcp-server-group-AP] quit
[AC] interface Vlanif 10
[AC-Vlanif 10] dhcp select relay
[AC-Vlanif 10] dhcp relay server-select AP
[AC-VlaniflO] quit
C. [AR] ip pool AP
[AR-ip-pool-AP] network 10.1.1.0 mask 24
[AR-ip-pool-AP] gateway-list 10.1.1.2
[AR-ip-pool-AP] excluded-ip-address 10.1.1.1
[AR-ip-pool-AP] quit
[AR] interface GigabitEthernet 0/0/1
[AR-GigabitEthernetO/O/1] dhcp select global
[AR-GigabitEthernet0/0/l] quit
[AR] ip route-static 10.1.1.0 255.255.255.0 172.21.1.1
D. [AC] dhcp server group AP
[AC-dhcp-server-group-AP] dhcp-server 172.21.1.2
[AC-dhcp-server-group-AP] quit
[AC] interface Vlanif 10
[AC-Vlanif 10] dhcp select relay
[AC-Vlanif 10] dhcp relay server-select AP
[AC-Vlanif 10] quit

Answer: C,D

Explanation:
Option A correctly configures the DHCP relay agent (AC) to forward requests to the DHCP server using VLAN 10.Option B correctly configures the DHCP server (AR) with the correct IP pool (10.1.1.0/24), gateway, and excluded IP addresses. The static route to 10.1.1.0 through 172.21.1.1 ensures proper routing .
=========

NEW QUESTION # 169
The filter-policy 2000 export command is run in an ISIS process. Which of the following statements about the functions of a filter policy is false?

A. Filters LSPs to be advertised.
B. Is used together with the route import function to advertise some imported external routes to neighbors.
C. Controls the advertisement of routes generated by the device.
D. If this command is not run, the device by default advertises all routes that ISIS Imports form external routing protocols.

Answer: A

Explanation:
The filter-policy command in IS-IS is used to control the advertisement and filtering of routing information.
However, it does not directly filter LSPs (Link State Packets); instead, it controls route advertisements. The false statement here is that it filters LSPs .

NEW QUESTION # 170
OSPF networks are classified into broadcast, P2P, P2MP, and NBMA networks. Which of the following types of networks use the default Hello time (30s)?

A. NBMA
B. P2MP
C. Broadcast
D. P2P

Answer: A,B

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
* Default OSPF Hello Timer:
* The OSPF Hello timer is used to send periodic Hello packets and maintain neighbor relationships.
* Default Hello timers:
* Broadcast and P2P: 10 seconds
* NBMA and P2MP: 30 seconds
* Network Types Using 30s Hello Time:
* P2MP (C): OSPF sends Hello packets every 30 seconds by default.
* NBMA (D): OSPF also uses 30 seconds for NBMA networks.
References:
* HCIA-Datacom Study Guide, Chapter: OSPF Network Types
* Huawei OSPF Timer Configuration

NEW QUESTION # 171
Security policy is the core feature of firewalls. Only valid traffic that complies with security policies can be forwarded by firewalls. Which of the following statements are true about security policy matching rules?

A. Multiple values can be configured for a single matching condition, and the values are logically ANDed.
B. When multiple security policy rules are configured, they are sorted in a list by configuration sequence by default. A security policy rule configured earlier is placed higher in the list and has a higher priority.
C. If a security policy contains multiple matching conditions, the relationship between them is AND.
D. The system has a default security policy named default, where all matching conditions are any and the default action is permit.

Answer: B,C

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. How Firewalls Match Security Policies:
* Firewalls use security policies to define rules for filtering traffic.
* Each policy contains matching conditions (e.g., source IP, destination IP, protocol, etc.) and an action (e.g., permit or deny).
* Traffic is evaluated against these policies in sequential order, and the first matching policy is applied.
2. Analysis of Each Statement:
Option A: Multiple values can be configured for a single matching condition, and the values are logically ANDed.
* Incorrect.
* Multiple values for a single matching condition (e.g., multiple source IPs) are logically ORed, not ANDed. For example, traffic from any of the specified source IPs matches the policy.
Option B: If a security policy contains multiple matching conditions, the relationship between them is AND.
* Correct.
* When a policy has multiple matching conditions (e.g., source IP AND destination IP AND protocol), all conditions must be met for the policy to match.
Option C: The system has a default security policy named default, where all matching conditions are any and the default action is permit.
* Incorrect.
* The default security policy typically denies all traffic unless explicitly permitted by user-defined policies.
Option D: When multiple security policy rules are configured, they are sorted in a list by configuration sequence by default. A security policy rule configured earlier is placed higher in the list and has a higher priority.
* Correct.
* Security policies are processed in sequential order based on their configuration sequence. Policies configured earlier have higher priority and are evaluated first.
3. Summary:
* The correct statements are B and D.

NEW QUESTION # 172
PBR is a mechanism for selecting routes based on user-defined policies. There are two types of PBR:
interface-based PBR and local PBR. Which of the following statements is false about these two types of PBR?

A. Local PBR takes effect only for locally originated packets.
B. Interface-based PBR is configured on an interface and takes effect only for incoming packets on the interface.
C. Interface-based PBR takes effect only for forwarded packets.
D. Local PBR is configured in the protocol view.

Answer: D

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. Overview of PBR (Policy-Based Routing):
Policy-Based Routing (PBR) allows you to override traditional routing decisions by defining user-specific policies.
* Interface-Based PBR: Applied to packets arriving at a specific interface and affects traffic being forwarded through the device.
* Local PBR: Applied to traffic generated by the local router itself (e.g., locally originated packets such as management traffic).
2. Analysis of Each Statement:
Option A: Interface-based PBR takes effect only for forwarded packets.
* Correct (True Statement).
* Interface-based PBR applies only to packets arriving at a specific interface and being forwarded through the router. It does not affect locally originated traffic.
Option B: Local PBR takes effect only for locally originated packets.
* Correct (True Statement).
* Local PBR specifically applies to traffic generated by the router itself, such as pings, SNMP requests, or routing protocol updates.
Option C: Interface-based PBR is configured on an interface and takes effect only for incoming packets on the interface.
* Correct (True Statement).
* Interface-based PBR is applied directly on the interface using commands like policy-based-route. It only affects traffic entering the specified interface.
Option D: Local PBR is configured in the protocol view.
* Incorrect (False Statement).
* Local PBR is not configured in the protocol view. It is typically configured using the command local- policy in the system view to handle traffic generated by the router.
3. Summary:
* Correct answer: D (Local PBR is NOT configured in the protocol view).

NEW QUESTION # 173
......

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