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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

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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

單項選擇題

Which of the following network services is responsible for mapping names to IP addresses？（）

A.DHCP
B.DNS
C.IMAP4
D.Telnet