下面哪个文件定义了网络服务的端口()。

A./etc/nfs

B./etc/nfs.conf

C./etc/exports

D./etc/netdir

A.rmmod

B.unmod

C.delmod

D.modprobe

A.lpflush

B.lprm-

C.lpclear

D.lprmall

A.lsmod

B.dirmod

C.modules

D.modlist

A.cat/proc/ioports

B.cat/proc/interrupts

C.cat/proc/memoryinfo

D.which interrupts

A.~/mail/

B./var/mail/

C./var/mail/spool/

D./var/spool/mail/

A.md5

B.tar

C.crypt

D.md5sum

A.NFS

B.DNS

C.NIS

D.routing

A.mount-twindows/win/dev/hda1

B.mount-fs=msdos/dev/hda1/win

C.mount-swin/dev/hda1/win

D.mount–tvfat/dev/hda1/win

A.管道

B.分级文件系统

C.字符型处理器

D.shell