1000BaseT has a MAXIMUM run distance of:（）……

单项选择题Which of the following features is essential in a firewall if it is to support RTP sessions?（）

A. Remote console
B. Statefulness
C. Address translation
D. Zones

单项选择题A layer 3 switch can move packets between subnets based on which of the following criteria?（）

A. 802.1q tag
B. Port
C. Application
D. IP address

单项选择题Which of the following is an invalid IPv4 address?（）

A.225.0.0.1
B.254.254.0.0
C.256.0.0.4
D.224.2.1.4

单项选择题An administrator needs to update a router configuration for a router that does not support SSH.Which of the following can be used to securely update the router configuration?（）

A.FTP
B.SNMPv2
C.TFTP
D.KTTPS

单项选择题New service from the telephone company is delivered over fiber, but the technician does not have a fiber module for the router. Which of the following would remedy this issue?（）

A. OTDR
B. Media converter
C. CSU/DSU
D. Fiber repeater