NFS is experiencing name service resolution difficulties.  Which command reports the LEAST useful information in trouble-shooting this problem？（）

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

单项选择题Whichcommandwillshownetworkstatisticssuchaskernelmallocandmblkfailures？（）

A.ifconfig -m
B.netstat -m
C.iptrace -a
D.errpt -a

单项选择题Whenenablingattyporttobeusedforacusession，whatmustbedoneonthesystem？（）

A.smit tty； take the defaults and create the desired tty
B.lsdev -Cc tty； check to see if the desired tty exists， if not create using smit tty Add a line similar to； Direct tty0 - 9600 direct to /etc/uucp/Devices Verify /etc/uucp/Dialers has the following line； 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WhichofthefollowinghasNOeffectoncontrollingtheaccesspermissionsneededtorunthe date commandontheremotemachine Earth usingthefollowingsyntax？rshEarthdate（）。

A.The local file： /etc/.netrc
B.The remote file： ~/ .rhosts
C.The securetcpip command
D.The remote file： /etc/hosts.equiv