Free Huawei H12-811 Practice Questions & Answers 2026 Part6 | HCIA-Datacom

In IPv4 network, AP supports static and DHCP to obtain IP address ()

The DHCPv6 server supports the provision of other configuration information such as DNS server addresses for the host. ()

When an Access type port sends a message, it will ()·

If the Length/Type of an Ethernet data frame is 0x8100. Which of the following statements is correct?

In WLAN networking, APs serve as infrastructure to provide wireless communication services for STAs. To allow a STA to discover and connect to an AP, the AP must inform the STA of its identity.Which of the following is this identity?

When two OSPF routers form a 2TAY neighbor relationship, LSDB. has been synchronized.

When two OSPF routers form a 2-WAY neighbor relationship, the LSDB. has been synchronized. ()

The network shown in the figure below. All routers run OSPF. The link cost value is shown in thefigure. What is the cost value of the route entry to the network 10.0.0.0/8 in the RTA routing table? ()(Single-choice question)

Which message does the OSPF protocol use to confirm the received LSU message?

When using FTP for file transfer, how many TCP connections will be established? ()

During STP calculation, the port cost is associated with the port bandwidth by default. Which of the following statements about the relationship between port cost and port bandwidth is true?

Which of the following is not the reason why RSTP can increase the speed of convergence? ()

As shown in the figure, if the command ping 10.1.1.2 is executed on R1, the data frame received by LSW1 from VLAN10 of LSW2 is tagged.

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

The data packets forwarded between two routers must not carry VLAN tags.

If the network administrator assigns the IPv4 address 192.168.1.1/28 to a host on the network, howmany hosts can be added to the network where the host resides?

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

In TCP/IP - based end - to - end communication, only the source and destination hosts process the header information added at the transport layer. Routers along the path will definitely not process this information.

R1 has the following configurations:[R1] radius-server template 1[R1-radius-1] radius-server authentication 10.1.6.6 1812[R1-radius-1] radius-server accounting 10.1.6.6 1813[R1-radius-1] radius-server shared-key cipher YsHsjx_202206139[R1-radius-1] quit[R1] aaa[R1-aaa] authentication-scheme auth1[R1-aaa-authen-auth1] authentication-mode radius[R1-aaa-authen-auth1] quit[R1-aaa] accounting-scheme acc1[R1-aaa-accounting-acc1] accounting-mode radius[R1-aaa-accounting-acc1] quit[R1-aaa] domain huawei.com[R1-aaa-domain-huawei.com] authentication-scheme auth1[R1-aaa-domain-huawei.com] accounting-scheme acc1[R1-aaa-domain-huawei.com] radius-server 1[R1-aaa-domain-huawei.com] quit[R1-aaa] quitWhich of the following statements is true?

Which of the following protocols can be used to prevent loops on a Layer 2 network with redundant links?

In order for the STA to obtain the SSID related information on the AP, which of the following messages is used by the AP to proactively declare the wireless network SSID information?

Which of the following protocols is a dynamic IGP routing protocol?

Under the command line interface of Huawei AR router, the save command is used to save the current system time.

There is a WeB server in the private network that needs to provide HITP services to public network users. Therefore, the network administrator needs to configure NAT on the gateway router RTA.

The load sharing mode at both ends of the Eth-Trunk can be inconsistent ()

Which of the following statements about direct routing is correct? ()

The administrator wants to configure the P address on the G0/0/0 interface of the router. Which of the following addresses is correct?

How to deal with the data frame sent by the Trunki port? ()

When two OSPF routers form a 2TAY neighbor relationship, LSDB. has been synchronized.

In a Layer 2 network with redundant links, which of the following protocols can be used to avoid loops?

The IPv6 address 2001: ABEF:224E:FFE2:BCC0:CD00:DDBE:8D58 cannot be abbreviated. ()

Which of the following statements is correct? ()

In a wireless communication system, information is first converted into digital signals for easy circuit calculation and processing by the transmitter through source coding, and then converted into radio waves through channel coding and modulation. Which of the following parameters of a carrier are modified during the modulation process based on signal changes? (Select all that apply) During modulation, the transmitter maps digital information onto certain physical characteristics of a carrier signal so that the information can be transmitted over the air. The three classic carrier parameters that can be modified are amplitude, frequency, and phase. Therefore, options A, B, and D are correct. Amplitude modulation changes the strength of the carrier wave. Frequency modulation changes the oscillation rate of the carrier. Phase modulation changes the phase angle of the carrier relative to a reference. Modern wireless communication systems often combine these parameters, especially amplitude and phase, in complex digital modulation schemes such as QPSK, 16-QAM, 64-QAM, or higher-order QAM used in WLAN standards. Option C, channel, is not a carrier parameter modified during modulation. A channel refers to a frequency resource or spectrum allocation used for communication, not a physical waveform characteristic being directly altered to encode bits. HCIA-Datacom introduces these basic wireless concepts to help learners understand how WLAN signals are transmitted, how data rate improvements are achieved, and why different modulation methods have different requirements for signal quality and interference resistance.

Which of the following is not the reason why RSTP can increase the speed of convergence? ()

The election of the root switch in STP only compares the priority of the switch, while in RSTP, the priority of the switch is compared with the MAC address at the same time. ()

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

Which of the following statements is true about the Forward Delay timer of STP?

Which of the following hosts are reachable to the host at 192.168.1.200/27 at Layer 2? (Select all that apply)

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

After the administrator successfully logged in to the router through Te1net, he found that the router’s interface could not be configuredIP address. Then the possible reasons are ()

If the application layer protocol is Te1net, then the value of the Protoco1 field in the IPv4 header? ()

In IPv4 network, AP supports static and DHCP to obtain IP address ()

On the network shown in the figure, GE1/0/1 and GE1/0/2 of SW1 are access interfaces, and their PVIDs are VLAN 2 and VLAN 3 respectively. GE1/0/1 of SW2 is also an access interface, and its PVID is VLAN 4. Which of the following configurations on SW1 and SW2 can ensure that data packets sent from PC1 and PC2 can reach PC3?

Refer to the configuration of the single-arm routing in the figure below, you can judge that even if theARP proxy is not enabled on the sub-interface of R1,The administrative department and the financialdepartment can also visit each other. ()(True or False)

Switch stacking supports more than two devices, and multiple switches can be grouped into a logical device through stacking. ()

With the continuous development of AI, data center application scenarios are gradually divided into general-purpose computing and intelligent computing scenarios. Data centers need to ensure service continuity of general-purpose computing clusters while unleashing the full potential of intelligent computing clusters, so as to guarantee stable and efficient operation in the AI era. Which of the following statements are true about the service requirements of data center networks in the two scenarios? (Select all that apply)

When two OSPF routers form a 2-WAY neighbor relationship, LSDB. has been synchronized. ()

UDP does not guarantee data transmission reliability and does not provide packet sorting and traffic control functions. It is suitable for the traffic that has low requirements for data transmission reliability, but high requirements for the transmission speed and delay.

When a Huawei network device functions as an FTP server, which of the following are possible causes of an FTP client failing to log in to the FTP server? (Select all that apply)

Which version of the SNMP protocol below supports encryption features? ()

What are the components of the OSI reference model from top to bottom?

In the network shown in the figure below, the router receives a data packet with a destination IPaddress of 11.0.12.1 from host

There is no channel overlap in the 14 available frequency bands in the 2.4GHz frequency band. ()

The IPv6 address 2001: ABEF:224E:FFE2:BCC0:CD00:DDBE:8D58 cannot be abbreviated. ()

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.? ()

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

AC uses CAPTAP control tunnel transmission to FIt AP management packet

A routing entry contains multiple fields. Which of the following statements about these fields isfalse?

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. ()

Which of the following statements is true about link aggregation in manual load balancing mode?

The Tracert diagnostic tool in Huawei routers is used to track the data forwarding path.

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

What is the value of the Type field in the RStp configuration BPDU message? ()

Which bridge is in the configuration BPDU sent by the switchID. Impossible to appear?

What is the total length of the interface ID in each link-local unicast address?