In the network shown in the figure below, the bridge ID of the switch has been marked.
Enter the command stp rootsecondary on the sWD. switch and the following switch will
become the root bridge of this network. ()

A.

SWA

B.

SWB

C.

SWD

Which of the following does not include the advantages of Wi-Fi6 compared to Wi-Fi5? ()

A.

Lower transmission delay

B.

Higher power consumption

C.

Higher number of access terminals per AP

Which of the following levels is not a common network level in mid-sized campus network architecture?

A.

Access layer

B.

Core layer

C.

Convergence layer

D.

Network layer

What kind of message does the DHCP server use to confirm that the host can use the IP
address? ()

A.

DHCP ACK

B.

DHCP OFFER

C.

DHCP REQUSET

In VRPOn the platform, the command"interfacevlanitvlan-id"The role is (). ()

A.

No such command

B.

Create or enter VLAN virtual interface view

C.

Configure VLAN for a port

Which of the following protocols does the RA. message used by IPv6 stateless
autoconfiguration belong to? ()

A.

ICMPv6

B.

UDPv6

C.

TCPv6

The output information of the router is shown in the figure. Which of the following
statements is wrong? () (Single-choice question)

The broadcast address corresponding to the

A.

Ethernet0/0/0 interface is 10.0.12.255

B.

The physical link of the Ethernet0/0/0 interface is normal

C.

Ethernet0/0/0 interfaceThe MTU value is 1480

D.

Ethernet (The IP address of the /0/0 interface is 10.0.12.1/24

If the Length of an Ethernet data frame/Type = 0x8100, which of the following statements is
correct? ()

A.

There must be an IP header in the upper layer of this data frame

B.

This data frame must carry VLAN TAG

C.

There must be a UDP header in the upper layer of this data frame

D.

There must be a TCP header in the upper layer of this data frame

The WPLS tag header is encapsulated between the data link layer header and the network
layer header of the message.

A.

True

B.

False

If the network address of a network is 10.1.1.0/30, what is its broadcast address? ()

A.

10.1.1.3

B.

10.1.1.4

C.

10.1.1.1