Which command can be used to modify network options？（）

单项选择题AllofthefollowingsettingswillresultinagettyprocessontheconfiguredportEXCEPT：（）

A.Enable
B.Disable
C.Share
D.Delay

单项选择题WhichcommandcanbeusedtoverifyallthefilesystemsthatareexportedbyanNFSserver？（）

A.showmount -e hostname
B.showmount -d hostname
C.showmount -a hostname
D.showmount

单项选择题NFSisexperiencingnameserviceresolutiondifficulties.WhichcommandreportstheLEASTusefulinformationintrouble-shootingthisproblem？（）

A.nfsstat -s
B.lssrc -s named
C.ls -l /etc/resolv.conf
D.nslookup hostname

单项选择题Toenableattyporttobeusedforacusessionwhatmustbedonetothesystem？（）

A.smit tty； take the defaults and create the desired tty
B.In the /etc/uucp Devices add a line similar to： Direct ttyX - 9600 direct
C.Install bos.net.uucp and the first available tty will be configured for use by a cu session
D.Run the Asynchronous Terminal Emulation （ATE） program and it will configure a tty port for a cu session

单项选择题Which of the following commands should be used to open a tty port configured in the  etc uucp Devices file as： Direct tty2 - 9600 direct in debug mode， ignoring modem control signal data carrier detect （DCD）？（）

A.cu -l tty2
B.cu -dml tty2
C.cu -dht Direct
D.cu -s9600 -l tty2