Which of the following statement about the main functions of the router is wrong? (Multiple choice)

• A.Guide data forwarding according to the routing table
• B.Establish routing tables through multiple protocols
• C.Forwarding according to the source IP address of the received data packet
• D.Realize the mutual communication between the same network disconnection equipment

Comment: *

Name: *

Email: *

Verification: *

What kind of message does the 0SPF protocol use to request the locally missing LSA? ()

• A.LSACK
• B.HELL0
• C.LSU
• D.LSR

Comment: *

Name: *

Email: *

Verification: *

As shown in the figure below, assuming the other configurations of the switch are kept in the default state, which port of the following switch will become the designated port? (Multiple Choice)

• A.SWA's G0/0/3
• B.SWC's G0/0/1
• C.SWC's G0/0/2
• D.SWB's G0/0/1

Comment: *

Name: *

Email: *

Verification: *

Which of the following cannot be the length of the IPv4 packet header?

• A.20B
• B.32B
• C.64B
• D.60B

Comment: *

Name: *

Email: *

Verification: *

What are the user authentication methods that can be deployed in wlan? ()

• A.MAC. Authentication
• B.Radius certification
• C.Portal authentication
• D.802.1X authentication

Comment: *

Name: *

Email: *

Verification: *