The second set of the three permissions (r-) indicates that______________? A. group has read permission only B. other has read permission only C. owner has read permission only D. group has write permission only

Which of the following commands is used to obtain a list of all files by modification time ? A. ls -1B. ls -t C. ls -i D. ls -R

Which of the following special shell variables is used to process number of the last background job ? A. $! B. $# C. 0 D. $*

Which command is used to remove a file ? A. removeB. rm C. mv D. del

Which symbol will be used with grep command to match the pattern pat at the beginning of a line ? A. ^pat B. $pat C. pat$ D. pat^

Which command is used to remove the read permission of the file ‘note’ from both the group and others ? A. chmod go+r note B. chmod go+rw note C. chmod go-x noteD. chmod go-r note

Which of the following command is used to mount NFS filesystems ? A. nfsmount B. knfsdC. mount D. All of the above

What command is used with vi editor to delete three words ? A. $B. 3 dw C. 3 x D. 3 dd

Who founded the FSF? A. Linus TorvaldsB. Richard Stallman C. Bob Young D. All of the above

The IP address are based on________________? A. 16-bit addressesB. 32-bit addresses C. 64-bit addresses D. 8-bit addresses