When the Access type port sends a message, it will ().

• A.Type the PVID. information of this port, and then send it out
• B.Send tagged messages
• C.Add the VLAN information of the message, and then send it out
• D.Strip the VLAN information of the message, and then send it out

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As shown in the figure below. Which network device can host A and host B use to achieve communication? () (Single-choice question)

• A.Layer 2 switch
• B.HUB
• C.router
• D.Hub

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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

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Which of the following statements is correct for the ACL configured in the Telnet application? ()

• A.The device with IP address 172.16.105.5 can use Telnet service
• B.The device with P address 172.16.105.6 can use Telnet service
• C.The device with IP address 172.16.105.3 can use Telnet service
• D.The device with P address 172.16.105.4 can use Telnet service

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In the network shown in the figure below, all routers run the OSPF protocol, and the link cost value is shown in the figure. What is the cost value of the route entry to the network 10.0.0.0/8 in the RTA routing table?

• A.60
• B.20
• C.70
• D.100

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