单项选择题
Which of the following tools allows an administrator to determine the MAC address of another computer?（）
A.ping
B.arp
C.ifconfig
D.ipconfig
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After 100 meters (328 feet), CAT6 cabling is known to experience which of the following symptoms?（）
A. Signal loss
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Kerberos is a form of user authentication that:（）
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Users are reporting that they are still experiencing network issues even though a fix was recentlyapplied. Which of the following troubleshooting methodology steps is the administrator using?（）
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B. Testing the solution and identifying the effects
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D. Documenting the solution and the entire process
