多項(xiàng)選擇題

Which are valid modes for a switch port used as a VLAN trunk?（）

A.transparent
B.auto
C.on
D.desirable
E.blocking
F.forwarding

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多項(xiàng)選擇題

An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP ports 21, 23 and 25. What types of packets will be permitted by this ACL?（）

A.FTP
B.Telnet
C.SMTP
D.DNS
E.HTTP
F.POP3

多項(xiàng)選擇題

Given the address 192.168.20.19/28, which of the following are valid host addresses on this subnet?（）

A.192.168.20.29
B.192.168.20.16
C.192.168.20.17
D.192.168.20.31
E.192.168.20.0