Atechnicianneedstoaddnetworkcapacity.However,whenpluggingasecondswitchintothefirstswitch,thereisnolinklight. Whichofthefollowingisthecauseofthissituation?（）
A. Theswitchesarenotstackable
B. Thecablewasnotwiredusing568A
C. Thecableneedstobeacrossovercable
D. TheswitcheshaveIGMPsnoopingenabled
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Which of the following is the FIRST step when troubleshooting an issue？（）
A. Identify the problem.
B. Verify full system functionality.
C. Document all findings.
D. Establish a theory of probable cause.
茶叶的香型主要有（）。
A. 清香型
B. 花香型
C. 栗香型
D. 香草气型
E. 鲜爽型
WhichofthefollowingallowsaWAPtobeinstalledinalocationwheretherearenopoweroutletsavailable?（）
A. Portauthentication
B. PoE
C. PPTP
D. Trunking
Whichofthefollowingwillallowaservertocontinuetofunctionifastickofmemoryfails?（）
A. Chipkill
B. MemoryRAID
C. Registeredmemory
D. ECC
E. Hotspare
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