单项选择题

On which of the following network devices would an administrator configure an ACL?（）

A.Router
B.Hub
C.Repeater
D.NIC

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Which of the following ports is the default telnet port?（）

A.20
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C.22
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A.Fiber
B.Coax
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单项选择题

An administrator is concerned about users utilizing the company's wireless signal with their
personal laptops.
Which of the following is the BEST method to use to prevent unauthorized devices from using the company's wireless network?（）

A. Secure VPN
B. MAC filtering
C. IP filtering
D. Static IP addresses