Free Huawei H12-811 Practice Questions & Answers 2026 Part1 | HCIA-Datacom

The undo command can be used in the CLI of a Huawei device to restore default settings, disable functions, or delete configurations. Which of the following are correct undo commands? (Select all that apply)A. system - view [HUAWEI] undo system - view B. [HUAWEI] interface GE 1/0/1 [HUAWEI - GE1/0/1] ip address 10.12.1.1 24 [HUAWEI - GE1/0/1] undo ip addressC. [HUAWEI] interface GE 1/0/1 [HUAWEI - GE1/0/1] undo portswitch [HUAWEI - GE1/0/1]D. [HUAWEI] sysname TEST [TEST] undo sysname [HUAWEI]

The following description of the Layer 2 Ethernet switch is incorrect ().

The IEEE802.11aC. standard only supports the 5GHz frequency band ()

In the figure, a web client sends an HTTP request to a web server, and the router in between performs operations on the HTTP request. Which of the following statements are false about the router's operations? (Select all that apply)

FAT AP can independently complete wireless user access, wireless user authentication, and business data forwarding without AC. ()

The change of the Router ID of the OSPF process takes effect immediately.

Which of the following protocols is not a file transfer protocol?

On the OSPF network shown in the figure, all IP addresses can communicate with each other. Then the following configurations are added on R1: Which IP address of S1 can successfully ping 10.2.23.3? According to the topology and the original question scenario, the correct answer is 10.2.1.1, so option B is selected. In HCIA-Datacom troubleshooting questions of this type, the goal is usually to identify the correct management address, next-hop interface address, or testing destination based on the addressing design shown in the figure. The answer depends on the role of the device and the direction of the connectivity verification. In such topologies, each interface belongs to a specific network segment, and the selected address must match the intended test target on that segment. If the test is being performed toward the neighboring device or a specific reachable interface, using the correct IP on the proper subnet is essential. An incorrect address may still look familiar from the topology but would not represent the right test endpoint. HCIA-Datacom places strong emphasis on reading topology labels carefully, matching interface addresses to subnet assignments, and choosing the correct destination when using tools such as ping, tracert, or service-specific connectivity tests. This question mainly checks address recognition accuracy in a troubleshooting context.

The following two configuration commands can implement router RIA. The route to the same destination 10.1.1.1.0 is active and standby:

What kind of message does the OSPF protocol use to confirm the received LSU message? ()

By default, in the SNMP protocol, which port number does the agent process use to send alarm messages to N? ()

In the following figure, after the OSPF routers converge, in which state is the OSPF neighborrelationship between Router B and Router C?

AAA. Which of the following is not included? ()

If the Proto of a certain route information in the routing table is Direct, the priority of this route must be0.()

To ensure that the same data stream is forwarded on the same physical link, which load sharing method does Eth Trunk use?

In the campus network, the reliability of the network can be improved by using link aggregation and stacking technology. ()

AP does not need AC. It can independently complete the work of wireless user access, wireless user authentication, and business data forwarding.

You can enter a question mark (?) in the CLI of a Huawei switch to obtain online help. Which of the following statements is true about the meaning of in the output of the command sysname SW1? [HUAWEI] sysname SW1?

AAA is short for authentication, authorization, and accounting. The accounting function records only the fees incurred when users use network resources, but not the Internet access traffic or duration.

Which of the following IPv6 addresses is a multicast address? ()

Which of the following messages does the AP use to request the software version from AC.? ()

If during the PPP authentication process, the authenticatee sends the wrong user name and password to the authenticator, what type of message will the authenticator send to the authenticatee? ()

Which of the following packets is used by OSPF to describe its link state database (LSDB)?

When the FIT AP goes online, it will definitely download the software version from the AC.

At what layer of the OSI reference model does a router operate? ( )

On the VRP platform, the default protocol priority of routes in the direct route, static route, RIP.OSPF area, from high to low, is ()

As shown in the figure, there are three data packets captured by the administrator on the network. Which of the following statements is incorrect? (Single choice question)Source destination protocol info10.0.12.110.0.12.2TCp50190>telnet［SYN］seq＝0win＝8192Len＝0mss＝146010.0.12.210.0.12.1TCP telnet:50190 SYN, ACK seg-0 Ack-1 win-8192 Len-0mss=146010.0.12.110.0.12.2 TCP50190>telnet(ACK)seq-1Ack=1win=81921en=0

According to the VTY user interface configuration shown in the following figure, the user level is set to 3.[Huawei]user-interface vty 0 14[Huawei-ui-vty0-14]acl 2000 inbound[Huawei-ui-vty0-14]user privilege level 3[Huawei-ui-vty0-14]authentication-node passwordPlease configure the login password (maximum length 16):huawei

If the network address of a network is 192.168.1.0. Then its broadcast address must be 192.168.1.255.

System-view (huawei) command-privilege level3 view user save is correct about the above configuration command ()

The Trunk port can send both tagged data frames and untagged data frames.

A network engineer prompts the following message when entering the command line: Error: UnrecognizeD.commanD.founD.at '＾' position. Which of the prompt information is correct? ()

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. ()

The link aggregation interface can only be used as a Layer 2 interface (C)

When a Huawei device functions as an SSH client to log in to another network device for the first time, the ssh client first-time enable command must be run to enable the first-time login function of the SSH client. Otherwise, the login fails.

OSPF Router ID. It must be the same as the IP address of an interface on the router.

When a switch port receives a frame that does not carry a VLAN tag, it must add a PVID to the frame.

When a Huawei device functions as an SSH client to log in to another network device for the first time, the ssh client first-time enable command must be run to enable the first-time login function of the SSH client. Otherwise, the login fails.

NAPT and Easy IP translate both IP addresses and port numbers to allow multiple private IP addresses to share multiple public IP addresses.

When the ACL in the following figure is configured on a Telnet server, only the device with an IP address of 172.16.105.2 can remotely log in to the Telnet server. bash Copy code acl number 2000 rule 5 permit source 172.16.105.2 0

In standard STP mode, which of the following non-root switches will forward the C-set BPDU generated by the root switch? ()

Which of the following commands can switch a view from the system view to the user view?

Which of the following advantages is/are inter-VLAN route interworking in one-arm routing mode?

The RSTP protocol uses the P/A mechanism to speed up the upstream port's transition to the Forwarding state, but what is the reason for no temporary loop? ()

The following statement about static routing in Huawei equipment is wrong ().

The change of the Router ID of the OSPF process takes effect immediately.

At what layer of the OSI reference model does a router operate? ( )

In order to realize the launch of FIT AP, FIT AP first needs to obtain the IP address of AC. Which of the following is not included in the way FITAP obtains the IP address of AC.? ()

When AP and MC are in different Layer 3 networks, what method is recommended for AP to discover AC?

Assume that an OSPF-enabled router has no loopback interface configured. What would be used as the router ID?