题目内容

Anadministratorhasprovideda24bitnetmask.Whichofthefollowingoptionsindicatesthenumberofhostaddressesthatareavailableinanetwork?()

A. 24
B. 126
C. 128
D. 254

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Which of the following DB2 data types has a fixed length?()

A. XML
BLOB
C. DOUBLE
DBCLOB

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Whenchoosingahostname,othermachineswillassociatethenamewith()。

A. theIPaddress
B. theMACaddress
C. inetd
D. port80

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