H12-211-ENU 무료 덤프문제 온라인 액세스

As shown in the figure, three Layer 2 switches are interconnected with one HUB, and the switch is enabled with STP. For the bridge ID setting of the switch STP, refer to the following figure. Others are default configurations. Which of the following statement is wrong?

• A.After the bridge ID comparison, LSW1 is the root bridge.
• B.G0/0/1 port of LSW3 is an AP port and is blocked.
• C.The G0/0/2 port of LSW1 is blocked.
• D.Both ports of LSW1 are designated ports and are in the forwarding state.

What should do when the Access port sends a data frame?

• A.Stripping TAG forwarding
• B.Send a message with TAG
• C.Replace VLAN TAG forwarding
• D.Mark PVID forwarding

Which of the following protocols does not belong to the file transfer protocol?

• A.TFTP
• B.HTTP
• C.FTP
• D.SFTP

Which of the following commands can enable the DHCP relay function of the router interface?

• A.dhcp select relay
• B.dhcp select server
• C.dhcp select global
• D.dhcp select interface

UDP does not guarantee the reliability of data transmission. It does not provide functions such as packet sorting and flow control. It is suitable for traffic with low transmission reliability requirements but high transmission speed and delay.

• A.True
• B.False