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.Management Sciences
Category: Basic of linux unix
Which of the following commands is used to copy directory structures in and out________________?
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A. cp
B. cpio
C. cp – p
D. copy
Which command is used to list all the files with extension .lst ?
A. ls -l *.lst
B. ls lst*
C. ls *.*
D. ls *[lst]
Which command is used to make all files and sub-directories in the directory (progs) executable by all users ?
A. chmod -R a+x progs
B. chmod -R 222 progs
C. chmod -1 a+x progs
D. chmod -x a+x progs
What layer protocol is responsible for user and the application programme support such as passwords, resource sharing, file transfer and network management ?
A. Layer 4 protocols
B. Layer 5 protocols
C. Layer 6 protocols
D. Layer 7 protocols
Which command is used to move all files to the bin sub-directory of the parent directory ?
A. mv *.* /bin/
B. mv * /bin/*
C. mv * ../bin
D. mv * ../bin *.*
Which class network is used for a collection of a small number of networks with a large number of nodes ?
A. Class A
B. Class B
C. Class C
D. All of the above
In which tcp_wrappers file can you specify to allow all connections from all hosts ?
A. /etc/hosts.allow
B. /etc/hosts.deny
C. /etc/hosts
D. /etc/tcp.conf
What command is used to assign only read permission to all three categories of the file’letter’ ?
A. chmod u + r, g + r, o – x letter
B. chmod ugo = r letter
C. chmod a – rw letter
D. chmod go + r letter
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