多项选择题

Which of the following ports are used by default for web servers? （）(Select TWO)

A.80
B.110
C.123
D.143
E.443

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单项选择题

A technician needs to troubleshoot connectivity between two devices located on the same network.
Which of the following BEST describes the type of protocol being used?（）

A.IGP
B. EIGRP
C. EGP
D. BGP

单项选择题

Which of the following methods can move files in clear text and can be easily intercepted?（）

A.RSH
B.SNMP
C.FTP
D.TELNET

单项选择题

Which of the following tools would a technician use to check functionality of a physical networkconnection?（）

A. Butt set
B. Cable tester
C. Protocol analyzer
D. Voltage event recorder