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H12-821_V1.0テストエンジンお試しセット、H12-821_V1.0問題集PDF
Huawei H12-821_V1.0（HCIP-Datacom-Core Technology v1.0）認定試験は、データ通信の分野の専門家のスキルと知識を検証する中間レベルの認定です。この認定は、IT業界から非常に高く評価されており、多くの大手企業によって認められています。この試験の準備をするために、候補者はトレーニングコースに参加したり、自己学習資料を使用したりすることができ、HuaweiはHuawei Learning Communityと呼ばれる認定準備ツールも提供します。
HCIP-Datacom-Core Technology V1.0認定試験は、ネットワーク分野でのキャリアアップのための優れた方法です。この試験は、幅広いネットワークトピックにおける専門知識を認定し、世界中の雇用主に高く評価される資格を提供します。試験は、最新の業界ベストプラクティスに従っており、試験でカバーされるトピックは、ネットワーク分野の最新の進歩やトレンドを反映しています。ネットワークプロフェッショナルの履歴書に必須の追加項目であり、キャリアアップの可能性を大幅に高めることができます。
質問 # 81
In BGP, Notification messages are used to request peers to resend routing information after routing policies are changed.
- A. FALSE
- B. TRUE
正解：A
解説：
Notification Message Purpose
* BGP Notification messages are used to report errors or terminate a connection. They do not request peers to resend routing information after routing policies are changed.
* Routing updates following policy changes require manual resynchronization, not Notification messages.
HCIP-Datacom-Core Reference
* The purpose and usage of Notification messages are discussed in the BGP operation chapters.
質問 # 82
Which of the following attacks is not the network layer attack?
- A. Smurf attack
- B. ICMP attack
- C. ARP spoofing attack
- D. IP spoofing attack
正解：C
質問 # 83
Multiple BGP processes cannot be configured on the same router.
- A. FALSE
- B. TRUE
正解：A
解説：
On Huawei devices, multiple BGP processes can be configured on the same router, but they are typically used for specific use cases such as multi-instance deployments or virtual routers. This flexibility is supported by Huawei's routing protocols .
質問 # 84
Regarding the route-policy set-cost configuration below, which of the following statements is true?
- A. The route 11.1.0.0/16 is permitted by node 10, and its tost Is set to 300.
- B. The cost of all routes is set to 200.
- C. All the routes that are not permitted by node 10 will be denied.
- D. The route 11.1.0.0/16 will continue to match node 20 after permitted by node 10, and (he final cost is set to 200.
正解：A
解説：
The route-policy configuration specifies that node 10 matches the IP prefix 11.1.0.0/16 and applies a cost of
300 to this route. Once a route matches a node, it is no longer processed by subsequent nodes, making option D incorrect. Option B is also incorrect because only specific matching routes have their costs changed .
質問 # 85
To prevent inter-area routing loops, OSPF does not allow advertising routing information between two non-backbone areas and allows sing routing information only within an area or between the backbone area and a non-backbone area. Therefore, each ABR must be connected to the backbone area.
- A. FALSE
- B. TRUE
正解：B
質問 # 86
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. None
- B. AC2
- C. Random access
- D. AC1
正解：B
解説：
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 .
質問 # 87
After which of the following parameters are modified does an IS-IS neighbor relationship need to re-established?
- A. The level of an ISIS interface is changed.
- B. The IP address of an ISIS interface is changed.
- C. The interval at which an IS-IS interface sends IIH packets is changed.
- D. The cost of an IS-IS interface is changed.
正解：A
質問 # 88
GRE is a Layer 2 VPN encapsulation technology that encapsulates packets of certain data link layer protocols so that the encapsulated packets can be transmitted over an IP network.
- A. FALSE
- B. TRUE
正解：A
解説：
GRE (Generic Routing Encapsulation) is not a Layer 2 VPN technology. Instead, it is a Layer 3 tunneling protocol used to encapsulate a wide variety of network layer protocols inside point-to-point connections. GRE is commonly used for creating VPN tunnels across IP networks, allowing for the transport of various types of payloads. This misunderstanding about GRE being a Layer 2 technology contradicts its definition and typical application .
質問 # 89
Which command is used to configure the VRRP preemption delay?
- A. vrrp vrid 1 preempt-delay 20
- B. vrrp vrid 1 preempt-mode timer delay 20
- C. vrrp vrid 1 preempt-timer 20
- D. vrrp vrid 1 timer delay 20
正解：A
解説：
The correct command for configuring the VRRP (Virtual Router Redundancy Protocol) preemption delay is vrrp vrid 1 preempt-delay 20. This command sets the delay before a higher-priority VRRP router preempts the master role, ensuring stable operation during network transitions .
質問 # 90
By default, some security zones are created when Huawei firewalls are enabled. Which of the following security zones is created by users?
- A. Local
- B. DMZ
- C. Trust
- D. ISP
正解：B
解説：
By default, Huawei firewalls create security zones such as Trust, Untrust, and Local. The DMZ (Demilitarized Zone) is a security zone explicitly created by users. A DMZ is used to isolate an internal network from the external one, providing an additional layer of security by placing public-facing services (e.
g., web servers) in this intermediary zone. This setup ensures that if a public-facing service is compromised, the internal network remains secure. Huawei Firewall configuration steps confirm this zoning principle, making DMZ creation an explicit user-driven action .
質問 # 91
BFD control packets are encapsulated in UDP packets for transmission. What is the destination port number of multi-hop BFD control packets?
- A. 0
- B. 1
- C. 2
- D. 3
正解：B
解説：
BFD control packets are encapsulated in UDP packets, and the destination port number for multi-hop BFD control packets is 4784. This is a standardized port for multi-hop BFD operation .
質問 # 92
According to BGP route selection rules, the route with the higher Local_Pref is preferred.
- A. FALSE
- B. TRUE
正解：B
質問 # 93
Which of the following scenarios is not suitable for deploying interface PBR?
- A. A core switch needs to forward traffic between the intranet and extranet to an AC device that connects to the core switch in off-path mode.
- B. A core switch needs to forward the traffic between the intranet and extranet to a security detection device that connects to the core switch in off-path mode.
- C. A device needs to modify the next-hop IP address for locally originated traffic.
- D. On an enterprise network with multiple ISP outbound interfaces, each internal network segment accesses the Internet through a particular ISP outbound interface.
正解：C
解説：
Policy-Based Routing (PBR) on interfaces is used to forward traffic based on specific policies rather than the routing table. However, PBR is not suitable for modifying the next-hop of locally originated traffic. Other scenarios listed are typical use cases for interface PBR .
質問 # 94
Which of the following statements regarding the firewall zone security level is false?
- A. The configured security level cannot be changed.
- B. Two zones cannot be configured with the same security level.
- C. Only the security level of the user-defined zone can be configured.
- D. The default security level of the new zone is 1.
正解：A
解説：
In Huawei firewalls, the security level of a zone can be reconfigured by an administrator, making the statement that it cannot be changed false. Other statements accurately describe security level restrictions or defaults .
質問 # 95
On an OSPF network, if a router receives an update of an LSA that exists in the local LSDB, the router updates the LSDB and floods the LSA.
- A. FALSE
- B. TRUE
正解：A
解説：
OSPF LSA Flooding Mechanism
* If a router receives an LSA identical to one already in its LSDB, it does not flood the LSA again unless the LSA has changed (i.e., the sequence number or content has been updated).
* OSPF ensures efficient use of bandwidth by avoiding redundant flooding of unchanged LSAs.
HCIP-Datacom-Core Reference
* The OSPF LSDB synchronization process explains that unchanged LSAs are not reflooded, ensuring stability and resource optimization.
質問 # 96
Which of the following parameters are not mandatory during the configuration of a BGP peer?
- A. password
- B. as-number
- C. description
- D. Peer IP address
正解：A、C
解説：
The mandatory parameters for BGP peer configuration are the peer IP address (peer ip-address) and AS number (as-number). A password is optional for MD5 authentication, and a description is an optional comment for reference. These are not required for establishing the peer relationship .
質問 # 97
The Next_Hop attribute in BGP records the next hop of a route. Similar to the next hop in an IGP, the Next_Hop attribute in BGP must be the IP address of a peer interface.
- A. FALSE
- B. TRUE
正解：A
解説：
BGP Next_Hop Attribute
* Unlike IGP, the Next_Hop attribute in BGP does not necessarily have to be the IP address of a peer interface. For example, in multi-hop BGP configurations, the Next_Hop can point to a different router or interface within the network.
HCIP-Datacom-Core Reference
* Details of the Next_Hop attribute and its behavior are outlined in BGP path selection principles.
質問 # 98
Which of the following attacks is not the network layer attack?
- A. Smurf attack
- B. ICMP attack
- C. ARP spoofing attack
- D. IP spoofing attack
正解：C
解説：
ARP spoofing is a Layer 2 attack, as it targets ARP tables in switches or end devices. All other attacks, including IP spoofing, ICMP attacks, and Smurf attacks, are network layer (Layer 3) attacks .
質問 # 99
A monitoring plane usually comprises the monitoring units of main control boards and interface boards. This plane can monitor the system environment independently. Which of the following environment monitoring functions can be provided by the monitoring plane?
- A. Temperature monitoring
- B. Fan control
- C. Voltage monitoring
- D. System power-on and power-off control
正解：A
質問 # 100
ASPF enables the firewall to support multi-channel protocols such as FTP and to define security policies for complex applications.
- A. FALSE
- B. TRUE
正解：B
解説：
Application Specific Packet Filtering (ASPF) is a feature that allows the firewall to understand and handle multi-channel protocols such as FTP, H.323, and SIP. ASPF inspects the control channel to dynamically create temporary rules for the data channels, enabling the firewall to secure and manage complex application protocols. This feature ensures that appropriate security policies are applied to these multi-channel applications .
質問 # 101
Which of the following statements regarding BGP route advertisement are false?
- A. Only the optimal routes preferred by BGP can be advertised to other BGP peers.
- B. Only the routes learned from IGPs can be advertised to other BGP peers.
- C. All the BGP routes learned from all BGP peer will be advertised to other BGP peers.
- D. By default, the routes learned from an IBGP peer will not be forwarded to other IBGP peers.
正解：A
質問 # 102
Which of the following statements regarding the display bgp routing-table command output is true?
- A. The route to the destination address 192.168.1.0 is learned through AS 200.
- B. The route to the destination address 192.168.1.0 is not the optimal route in the BGP routing table.
- C. The MED value of the route to the destination address 192.168.1.0 is 100.
- D. The route to the destination address 192.168.1.0 is injected into the BGP routing table using the network command.
正解：D
解説：
The Origin attribute in the display bgp routing-table output is marked as i, indicating that the route was injected into the BGP routing table using the network command. The other options are incorrect because the AS path is not displayed, the MED is 0, and the route is marked as the best (>), meaning it is the optimal route
.
質問 # 103
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