汽车：自行车()

A./etc/hosts

B./etc/irs.hosts

C./etc/resolv.conf

D./etc/netsvc.conf

a. "我的电脑”上

b. 文件夹图标处

c. 任一快捷图标处

d. 空白处

A.et0

B.at0

C.sa0

D.en0

ystemadministratorofthenetworkisinthe/u/tmpdirectoryofEarth，andstartsanftptoSaturnasroot.Whichofthefollowingsequenceofcommandsissuedfromthelocalhost，Earth，will：（）。1.Changetothe/u/newdirectoryonSaturn.2.Checktoseeifthereisana.outfileonremotehostSaturn.3.Transfera.outfromEarthtoSaturn.

A.cd/u/newlsa.outputa.out

B.cd/u/newlsa.outgeta.out

C.lcd/u/newlsa.outputa.out

D.lcd/u/newlsa.outgeta.out

A.DS3200

B.DS3400

A.Coaxial

B.Fiberoptic

C.Cat3UTP

D.Cat5UTP

A.route

B.lsattr

C.netstat

D.ifconfig

A.TP

B.BNC

C.DIX

D.CAT5

A./etc/hosts

B./etc/inetd.conf

C./etc/netsvc.conf

D./etc/resolv.conf

A.must contain unique values.

B.cannot be CAST to other data types.

C.is created using the CREATE DISTINCT command.

D.contains a value that was automatically calculated from values in other columns.