單項(xiàng)選擇題

Which of the following DNS record types provides the hostname to IP address mapping?（）

A. A record
B. NS record
C. CNAME record
D. MX record

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單項(xiàng)選擇題

Which of the following should be updated when new computers are purchased?（）

A. Asset management
B. Change management
C. Cable management
D. Baselines

單項(xiàng)選擇題

Which of the following wireless technologies can support the GREATEST distance on either 2.4GHz or 5GHz frequencies?（）

A.802.11a
B.802.11b
C.802.11g
D.802.11n