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Huawei H12-811_V1.0（HCIA-Datacom V1.0）認定試験は、データ通信技術の分野で知識とスキルを向上させたいITプロフェッショナルを対象としています。これには、ネットワークエンジニア、ネットワーク管理者、ネットワーク技術者など、データ通信ネットワークを設計、実装、および維持する責任を持つ他のITプロフェッショナルも含まれます。この認定試験は、ネットワーク技術を学び、この領域での熟練度を証明したい学生にも適しています。この認定試験に合格することで、ITプロフェッショナルは、データ通信技術の専門知識を証明し、この分野でのキャリア機会を向上させることができます。
質問 # 54
In order to detect the connectivity status of the CAPWAP tunnel, after the CAPWAP tunnel is established, which of the following CAPTAP messages is used by the AC for detection? ()*
- A. Keepalive
- B. DPD
- C. Echo
- D. Hello
正解：A、C
質問 # 55
The following statement about static routing is wrong ()
- A. Cannot automatically adapt to changes in network topology
- B. Manual configuration by network administrator
- C. Low system performance requirements
- D. Routers need to exchange routing information
正解：D
質問 # 56
Which of the following is the default port number of the Telnet server?
- A. 0
- B. 1
- C. 2
- D. 3
正解：B
解説：
The default port number for Telnet is 23. This standard port assignment allows Telnet clients to connect to Telnet servers, facilitating remote management and troubleshooting tasks on network devices. Ports are preassigned to services to streamline network communication and reduce conflicts.
質問 # 57
Which of the following commands to configure the default route is correct? ()
- A. (Huawei)ip route-statiC.0.0.0.0 255.255.255.255192.168.1.1
- B. (Huawei)ip route-statiC.0.0.0.0 0.0.0.0 192.168.1.1
- C. (Huawei)ip route-statiC.0.0.0.0 0.0.0.0 0.0.0.0
正解：C
質問 # 58
Which of the following parameters is used to elect the root bridge in STP?
- A. Root path cost
- B. Bridge ID
- C. Port ID
- D. System name of the switch
正解：B
解説：
Comprehensive Explanation: In STP (Spanning Tree Protocol), the root bridge is elected based on the lowest Bridge ID. The Bridge ID consists of two parts: the bridge priority and the MAC address of the switch.
The switch with the lowest Bridge ID is elected as the root bridge. If two switches have the same priority, the switch with the lowest MAC address becomes the root. Other parameters such as Port ID and Root path cost are used in subsequent decisions to determine the best paths to the root bridge, but they are not used in the root bridge election itself.
質問 # 59
Following a failure of services in the network, an administrator discovered that the configuration in one of the enterprise routers had been changed. What actions can be taken by the administrator to prevent further changes?
- A. The administrator should limit access by setting the login privilege of users to level 0.
- B. The administrator should configure port-security on the router.
- C. The administrator should configure an ACL to allow only the administrator to manage the router.
- D. The administrator should configure AAA to manage user authorization on the router.
正解：C、D
解説：
Comprehensive Explanation: To prevent unauthorized changes to the router's configuration, the administrator can take several steps. Configuring an ACL to restrict management access ensures that only authorized users, such as the administrator, can log in to the router. Additionally, using AAA (Authentication, Authorization, and Accounting) allows the administrator to manage user permissions and control access to the router's functions based on user roles. Port-security is used for limiting MAC addresses on switch ports, and login privilege levels should be set appropriately but not limited to level 0, which restricts almost all actions.
質問 # 60
Which of the following descriptions about the router is wrong?
- A. The router can realize IP packet forwarding
- B. The router cannot isolate the broadcast domain
- C. The router can be used as a gateway device
- D. The router works at the network layer
正解：B
質問 # 61
As shown in the figure. All four switches are running $TP. Various parameters are set to default values. If the GO/0/2 port of switch C is blocked and cannot send configuration BPDUs through this port, how long will it take for the blocked port in the network to enter the forwarding state? () (Single-choice question)
- A. About 15 seconds
- B. About 50 seconds
- C. About 3 seconds
- D. About 30 seconds
正解：B
質問 # 62
When using FTP for file transfer, how many TCP connections will be established? ()
- A. D. 4
- B. C. 3
- C. 0
- D. B. 1
正解：C
質問 # 63
Which of the following statements regarding static routing and dynamic routing is incorrect?
- A. The static routing can be easily configured and managed on the enterprise network.
- B. Dynamic routing will use more resources than static routes.
- C. The use of dynamic routing is more convenient for the administrator to manage the network following network convergence.
- D. The static routing can automatically recover when a link failure is encountered.
正解：D
解説：
Detailed Explanation:Static routing does not automatically recover from link failures; manual reconfiguration is required if a static route path becomes invalid. Dynamic routing protocols, on the other hand, adapt automatically to network changes, adjusting routes as needed. (Reference: HCIA-Datacom Training Material, Static vs. Dynamic Routing)
質問 # 64
Two switches use manual link aggregation at the same time. The following statement is wrong. () (Single-choice question)
- A. Turn off the G0/0/1 and G0/0/2 ports on switch B, and the Efh-Trunk status is still UP
- B. Only switch off G0/0/2 port on switch B. The Eth-Trunk status is still UP
- C. Turn off the G0/0/1 and G0/0/2 ports on switch B. The Eth-Trunk status is down
- D. Only switch off G0/0/1 port on switch B. The Eth-Trunk status is still UP
正解：A
質問 # 65
What is the main function of the dynamic routing protocol? ()
- A. B. Generate IP address
- B. Dynamically generate routing entries
- C. D. Control router interface status
正解：C
質問 # 66
The network shown in the figure below. Which router is the BDR in this network? () (Single-choice question)
- A. D. Router C
- B. No BDR
- C. B. Router B
正解：A
質問 # 67
After the administrator performs the configuration shown in the figure on a router, which of the following commands can be used to specify a short lease for addresses assigned using DHCP?
- A. dhcp select relay
- B. lease 24
- C. lease 0
- D. lease day 0 hour 10
正解：D
解説：
Detailed Explanation: The command lease day 0 hour 10 sets the lease time for DHCP-assigned IP addresses to 10 hours. This setting provides a short, specific lease duration for dynamically assigned IP addresses, which can be useful in networks where devices frequently join and leave, minimizing IP address retention time.
質問 # 68
As shown in the figure below, in the MAC address table of the network. SWA and SWB, which of the MAC addresses, VLANs, and ports are correct? () (Single-choice question)
- A. SWB:
MAC Address VLAN
Port
MAC-A
MAC-B
MAC-C
100
200
100
GEC/0/3
GEC/0/3
GEC/0/1 - B. SWA:
MAC Address
VLAN
Port
MAC-A
MAC-B
MAC-C
10
GEC/O/1
GEC/0/2
GEC/0/3
20
100 - C. SWA:
MAC
Address VLAN
Port
MAC-A
MAC-B
MAC-C
10
GEC/0/3
20
GEC/0/3
GEC/0/3
100 - D. SWB:
MAC Address VLAN
Port
MAC-A
MAC-B
MAC-C
10
GEC/0/3
GEC/0/3
GEC/0/1
20
100
正解：D
質問 # 69
Which of the following routing protocols has the highest priority?
- A. Direct
- B. D. OSPF
- C. C. Static
正解：C
質問 # 70
On an interface that uses PPP as the data link layer protocol, you can configure a static route by specifying the next hop address or outgoing interface. ()
- A. False
- B. True
正解：B
質問 # 71
The following is the statement about the election of active ports in link aggregation LACP mode. the correct one is? ()
- A. B. Only compare interface priority
- B. The interface priority is compared first, and the better one cannot be judged to continue to compare the interface number, the smaller the better.
- C. C. Compare device priority
- D. D. Only compare interface numbers
正解：B
質問 # 72
If the MAC address of an interface is 00E0-FCEF-0FEC, the corresponding EUI-64 address is ( ).
- A. 00E0-FCEF-FFFE-0FEC
- B. 00E0-FCFF-FEEF-0FEC
- C. 02E0-FCFF-FEEF-0FEC
- D. 02E0-FCEF-FFFE-0FEC
正解：A
解説：
To form an EUI-64 address, the MAC address is split and FFFE is inserted in the middle, making the EUI-64 format 00E0-FCEF-FFFE-0FEC. Additionally, the 7th bit of the first byte is flipped to form the Modified EUI-
64 address used in IPv6 for Stateless Address Autoconfiguration (SLAAC).
質問 # 73
An AR2200 router needs to restore the initial configuration, which of the following operations are necessary? ()*
- A. Re-specify the configuration file to be loaded at the next startup
- B. Restart the AR2200 router
- C. Reset saved.configuration
- D. Clear current configuration
正解：B、C
質問 # 74
Link aggregation is a common technology in enterprise networks. Which of the following descriptions are the advantages of link aggregation technology?
- A. Improve safety
- B. Increase bandwidth
- C. Improve reliability
- D. Realize load sharing
正解：B、C、D
質問 # 75
The network shown in the figure below. The host has an ARP cache. Which of the following statements are correct? )(Multiple Choice Questions)
- A. Host A and Host B can communicate in two directions
- B. The router needs to be configured with a static route. Otherwise, host A and host B cannot communicate in both directions
- C. The following entries may appear in the ARP cache of host A 10.0.12.2MAC-C
- D. The following entry 11.0.12.1 MAC-B exists in the ARP cache of host A
正解：A、C
質問 # 76
On the network shown in the figure, router A adopts link aggregation in manual load balancing mode, and G0
/0/1 and G0/0/2 are added to link aggregation group (LAG) 1. Which of the following statements is false about Eth-Trunk 1 on router A?
- A. If both G0/0/1 and G0/0/2 on router B are disabled, Eth-Trunk 1 is Up.
- B. If only G0/0/1 on router B is disabled, Eth-Trunk 1 is Up.
- C. If both G0/0/1 and G0/0/2 on router B are disabled, Eth-Trunk 1 is Down.
- D. If only G0/0/2 on router B is disabled, Eth-Trunk 1 is Up.
正解：A
解説：
Explanation:
質問 # 77
The switch G0/0/1 port configuration information is shown in the figure. Which VLAN data frame does the switch forward without VLANTAG? ? () (Single-choice question)
- A. B. 30
- B. C. 20
- C. D. 40
正解：A
質問 # 78
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Huawei H12-811_V1.0（HCIA-Datacom V1.0）試験は、データ通信技術における候補者の専門知識を検証するために設計された認定テストです。この認定は、世界中の情報通信技術（ICT）ソリューションの大手プロバイダーであるHuawei Technologies Co. Ltdによって提供されています。この試験は、Huawei機器を使用してデータ通信ネットワークを設計および展開するスキルを実証したい専門家向けです。
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