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單項選擇題

Ensuring that data is transmitted securely over an IP network is the main purpose of：（）

A.Telnet
B.FTP
C.SIP
D.TLS

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單項選擇題

Which of the following is STP BEST identified by under the cable sheath？（）

A.Number of twists in wires
B.Number of wires
C.Lubricant
D.Foil

多項選擇題

Which of the following would be considered a routing protocol？（）

A.OSPF
B.DHCP
C.SMTP
D.SNMP
E.RIP

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