For switches running the SIP protocol, the port needs to wait for the forwarding delay in the
Learning state before it can be converted to the Forwarding state. ()

A.

True

B.

False

In the network shown in the figure below, the host has an ARP cache, and host A sends a packet to host B. What are the destination MAC and destination IP of this packet? () (Single-choice question)

A.

MAC-C,11.0.12.1

B.

B. MAC-B.11.0.12.1

C.

C. MAC-A.11.0.12.1

D.

D. MAC-C.10.0.12.2

In a broad sense, the transmission medium that constitutes the wireless local area network
wlan does not include? ()

A.

Rays

B.

Radio wave

C.

infrared

D.

laser

The network administrator hopes to be able to effectively use the P address of the
192.168.176.0/25 network segment. Now that the company’s marketing department has 20
hosts, which of the following address segments is best allocated to the marketing
department? ()

A.

192.168.176.160/27

B.

192.168.176.0/25

C.

192.168.176.96/27

D.

192.168.176.48/29

Which of the following IE802.11 standards only supports the 24GHz frequency band for
communication? ()

A.

802.11g

B.

C. 802.11ax

C.

D. 802.11a

What elements can NAPT transform? ()

A.

Only IP address

B.

IP address + port number

C.

Only MAC. address

Which of the following parameters cannot be used for advanced access control lists? ()

A.

Physical interface

B.

time limit

C.

Agreement number

D.

Destination port number

Which of the following advantages does the single-arm routing method achieve routing
intercommunication between Vlan? ()

A.

Reduce the number of equipment

B.

Reduce routing table entries

C.

Reduce the use of IP addresses

D.

Reduce the number of chain connections

"The network administrator created VLAN 10 on the Layer 3 switch and configured an IP
address under the virtual interface of the VLAN. When using the command "display ip
interface brief to view the port status, and found that the VLANIF10 interface is in the dow
state, what should be done? Operation to restore the VLANIF10 interface to normal? ()

A.

Assign an interface that must be Up and must be of type Trunk into VLAN 10

B.

Assign any physical interface to VLAN10

C.

Assign a physical interface that must be Up to VLAN 10

D.

Use the command "undo shutdown" under the VLANIF10 interface

Complete the ACL configuration shown in the figure on the router RTA. Which of the
following descriptions is correct? () (Single-choice question)
(RTA) acl 2001
(RTA-acl-basic-2001) rule 20 permit source 20.1.1.0 0.0.0.255
RTA-acl-basic-2001rule 10 deny source 20.1.1.0 0.0.0.255

A.

The VRP system will adjust the sequence number of the first rule to 5 according to the
configuration sequence

B.

The VRP system will not adjust the sequence number, but will first match the rule permit
source 20.1.1.00.0.0.255

C.

The VRP system will first match the rule deny source20.1.1.00.0.0.255 according to the
sequence number

D.

The sequence number of configuration error rules must be configured from small to
large