Linux module wise question bank
Code: 14BCA106- I Sem
Module 1
2 marks questions
1.
Define multiuser system.
A system which can be used by multiple
users at the same time is known as multiuser system.
2.
Write any two differences
between linux and windows operating system.
LINUX is virus free, WINDOWS needs
antivirus.
LINUX is highly securable. WINDOWS is not
securable.
3.
What is the effect of chmod
752 on the file prog.c?
ADMIN has full access to prog.c
Groupmembers can only read and execute
prog.c
Individual user can only write in prog.c
4.
Mention any two versions of
Linux.
Red hat,ubuntu,debian.
5.
What are the differences
between rm and rmdir?
Rm is to remove a file. Rmdir is to remove
directory.
6.
Write any four advantages
of cat command.
To create
To append
To check whether file exists or not.
To see the content of file.
7.
Mention any two filters in
Linux .
Grep .. sort… head .. tail
8.
How do you delete the
directory which contains files?
rm
-r
9.
Mention any two file
comparison commands of Linux.
Comm
Diff
10.
What are the differences
between ln and nl?
Ln is to link between two files.
nl
is to number the lines in a file.
11.
Mention any two disk
related commands of Linux.
Du
df
12.
Who found the Linux
operating system and when?
LINUS TORVALDES 1991
13.
Mention any two types of
files in Linux environment.
Normal files
Directory files
Special files
14.
Mention different types of
users in Linux environment.
Super user
Normal user
Network user
Pseudo user
15.
What are the differences
between cp and mv?
Cp is to copy the content of one file to
another
Mv is to move.
16.
Write any two uses of
sed command.
17.
Expand grep.
Globally search a regular expression and
print it.
18.
What is the differences
between df and du commands?
Df tells how much disk is free in
particular directory or system
Du says how much disk is used in system.
19.
What does bin and etc directories contains?
Bin contains executable programs . etc
contains configuration files of the system.
20.
What do you mean by filter?
Give an example of filter?
Filters are commands that sorts the content
of the file.
Grep is a filter.
21.
What is the meaning the
this command:$who | sort logfile > newfile?
The output of who will be taken as input
for sort . and then displayed.
The content of logfile is written to
newfile.
22.
What will be the effect of
the command umask 022?
23.
What do you mean by
multiuser and multitasking operating system?
N number of users can use system at once.
Multiuser
N number of tasks can be run at once.
Multitasking.
24.
Write any two feature of
Linux operating system.
Highly stable.
Free
Securable.
25.
Which are the different
types of shells available in linux?
C shell
Korn shel
Bash shell
Tcsh shell
26.
Mention any two security
mechanisms in linux?
Security at user level .. like login syste,
Security at directory/file level.. like
file permission using chmod
27.
How will you remove a
directory tree even it is not empty and without using rmdir?
Rm -r
28.
How does the command mv
bar1 bar2 behave when bar2 exists and bar2 not exists?
When bar2 exists.. it will be over written
When bar2 doesn’t exist . a new file will
be opened and then it will be moved.
29.
How will you display only
the lines common to two files?
Using comm command
Syntax : comm File1 file2
30.
What is the difference
between cat foo and cat>foo? Why do you have to use Ctrl-d in one and
not in in the other?
Cat foo displays the content of file and
exists to $ prompt . so no need to use ctrl D
Cat> foo creates file.. and we can enter
the content as much as we need and then end it by pressing ctrl D
31.
Describe the grep command
used for searching a pattern with any 2 examples.
Grep h bca
Grep –w hibos bca
32.
Which are the two options compulsory in cut
command ?
Cut –c (anynumber ) filename
Cut –f (anynumber) filename
5 marks questions
1.
Write any five differences
between linux and windows operating system.
2.
Explain the features of
Linux file system.
1.Hierarchial file structure.
2. File can grow dynamically.
3. File have access permission
4. all devices are implemented as files.
((This contains a Diagram … PLEASE GOOGLE
IT))
3.
Explain the benefits or
advantages of Linux operating system.
1.Highly stable
2. Multiuser system
3.Multitasking OS
4. HIGH performance
5. free
6. virus free
7. highly securable
8.Easy installation
9. open source
10.choice
4.
Write a note on history of
linux.
In
1991, a Finnish university student named Linus Torvalds was
unhappy with Microsoft DOS and Windows 3.1, but really liked the UNIX
systems he used at school. Unfortunately, UNIX was not cheaply available for
home use, so he decided to write his own, free version.
5.
Explain any two Linux flavors.
UBUNTU
Was developed by an African millionaire
MARK SHUTTLEWORTH .. UBUNTU IS THE LEADING DEVELOPER OF LINUX. N number of
versions are there in ubuntu.. the average time span for the versions are six
months. Latest is ubuntu 14.04 . These are free and very easy to install. It is
based on debian.
FEDORA.
2003 it was realeased. 2nd most popular
vendor.
It is based on red hat. What makes this
popular is that this has good security measures. Six months release scheldules.
6.
Explain any five Linux commands
with examples.
Write any five CIA commands guys.
7.
Explain the uses of cat
command with their syntaxes.
SAME CIA.
8.
Discuss about the file
permissions.
Read chmod.. full..
9.
Write a note on security of
file in linux.
10.
What are the uses of sed command.
11.
Explain any two file
comparison commands.
12.
Explain date command with
any four options.
Date is used to display system date.
Date –d gives the date In string..
Date %Y gives year
Date %H gives hour
Date %m gives month
13.
Explain the usage of grep
command .
It is used to search for an expression and
print it.
Example. Grep h bca
Any line that has h at first will be
printed
14.
Explain the root directory
structure of linux.
Diagram..
15.
Explain any two filters in
linux with minimum two options.
Grep –I
h bca .. ignore case sensitive
Grep –w hasd bca .. it should match the
perfect word
Grep –x asdnadsnads bca .. it should match
whole line.
Sort –b .. ignore blanks
Sort –f … ignore case sensitive
16.
Write a note on disk
related commands In linux.
17.
Explain the chmod command
in linux.
18.
Write a note on sed
command.
19.
Briefly describe any five
basic commands with suitable example.
CIA commands.
10 marks questions
1.
Explain the benefits of
Linux operating system.
2.
Explain different flavors
of Linux operating system.
3.
Explain any five commands
with syntax and related examples.
4.
Explain the file
permissions with respect to characters and numbers.
5.
Write the installation
steps for Ubuntu operating system.
6.
Explain any ten basic
commands in linux with suitable examples.
Module 2
2 marks questions
1.
What is an inode?
Inode is an unique number given for a file.
Its like serial number. A file can be accessed by inode number also.
2.
Define boot strap loader.
Software present in boot block which loads
the OS into memory when computer is turned on.
3.
What is the command used to
find the inode number of a file.
Ls –i.
4.
What does inode block
contain?
Info about owner, to which group he
belongs, size of files, data and time, file permissions.
5.
What does inode table
contains?
The inode table contains the list of all
inode numbers of respective file system.
6.
Define system call.
Call made to the kernel on behalf of user
by an interrupt.
7.
What are hard links In
Linux?
Hard links are link between two files. When
two files are hard linked. The content of first file will be copied to another
file.
8.
Mention different blocks of
unix file system
Boot block
Super block
Inode block
Data block
9.
Write any two qualities of
soft link.
These create a a link to another file which
contains same inode number
If first file is deleted then other file is
also deleted.
10.
What is the difference
between mounting and un mounting?
Mounting is to add the files of external
device into system.
Unmounting is to detach the files of
external device.
11.
What is the difference
between stat and fstat commands?
12.
Define pipe and give an
example.
Pipe is a command used to combine two
commands . the output of first command will be the input for second.
$who|sort > okay
13.
How do you create link to
the file?
By using the command ln
14.
Write difference between
soft link and hard link.
Mentioned above
15.
What is the command used to
change the owner of the file.
Chown is the command.
16.
What is the command used to
create a special file?
17.
Write any characteristics
of hard link.
Mentioned above.
5 marks questions
1.
Write the structure of
regular file.
2.
Wirt a note on super block
and inode block
Super block – contains state of file,,
number of blocks free with their location ,, number of block used.. total
storage size.
Inode block contains details about owner ,
file permissions, date and time, size of files, group to which owner belongs
to.
3.
Explain different blocks
belonging to file in linux.
Boot block , super block, inode block. Data
block. Explain in your own words guys.
4.
List any five system calls
with their use.
Fork() – to start a process
Exit()-to stop or terminate a process
Wait() – waiting for death of child. Parent
picks up this using wait
Getpid()- get process id
Getppid()-get parent process id
5.
Explain mounting and unmounting
with related commands.
6.
What is the difference
between soft link and hard link.
7.
Explain pipe features with
related examples.
10 marks questions
1.
Explain different blocks of
the Linux file system.
Module 3
2 marks questions.
2.
Define process.
Any running instance of program . or
program in execution.
3.
Define scheduler.
A ssoftware inbuilt… which decides the
priority of the files and sends the ready to run files for kernel to execute.
4.
What is the difference
between pid and ppid.
Pid is the process id .. ppid is parent
process id.
5.
Write any two options of ps
command.
Ps –f.. full info
Ps –e.. both user running process and
system .
6.
How to kill a process.
Using kill()
7.
Define daemon process.
Long running backgroung process
8.
How do you run a process in
the back ground?
By adding & at the end
9.
Which are the different
states in which a process can be?
Initial state.
Waiting state.
Ready to run .
Terminated.
Running.
10.
What are daemons In Linux?
Processes running in background.
11.
How to check process
running on a particular terminal?
12.
What is the command used to
find the PPID of process?
Ps -f
13.
Define process table.
It is the data structure within kernel
which contains all info about current processes.
14.
How do you run a process
even when user logout?
Using nohup .
5 marks questions
1.
Explain the different
states of a process.
2.
Write a note on context of
a process.
3.
Explain the mechanism of
process creation.
4.
Explain how to control a
process.
5.
Explain how to terminate a
process?
Kill –hup (name) restarts
Kill –stop (ppid) stops that id
6.
Explain ps command with any
four options.
Ps –f .. full status , even showing the
parent
Ps –e .. both user and system process
Ps –r .. only the currently running process
Ps –U .. only user running process
Ps –l .. long ist , shows even memory
related info.
7.
Define a process and what
is pid and ppid?
Process is a running instance of program .
or program in execution
Pid is process id.. every process has id.
Which is unique.
Ppid is the parent process id. If N number of
processes has same PID. Its good to kill the parent of that .. instead of
deleting individually.
10 marks questions
1.
Explain process states and
transitions with neat labeled diagram.
MODULE 4
2 marks questions
1.
What is vi editor?
Visual editor , using to write modify and
save a file.
2.
What are the features of vi editor
Three different operating modes making it
easy to use.
Full screen.
Cannot use fonts and styles.
3.
What are the operating modes available in vi editor?
Command mode,
Input mode.
Execution mode.
4.
How will you switch to insert mode from command mode
and vice versa?
I .. will go to input mode.. esc will
come back to command mode.
5.
Write the syntax to create a vi editor file
Vi filename
6.
How will you open an already created vi editor file?
Vi alreadyexistingfilename
7.
Write the syntax to save a vi editor file
In execution mode. :w
8.
Write the syntax to exit a vi editor file
In execution moge. :q!
9.
How will you save and exit a vi editor file?
In execution mode. :wq
10.
Write the syntax to save and quit the read only file
11.
Write the syntax to save file and quits in editing
mode
ZZ
12.
What is the difference between r and R command?
r>> replaces character under cursor
R >> replaces full content to the
right of cursor
13.
What is the difference between s and S command?
s>> replace one character with many
character
S>> replace whole line
14.
What is the difference between o and O command?
Open a new line below cursor o
Open a new line above cursor O
15.
What is the purpose of x and X command?
x>> deletes the character under
cursor
X>> deletes the character left to
cursor.
16.
How will you delete
a character under cursor?
x
17.
How will you delete 2 characters under cursor?
2x
18.
How will you delete an entire line under cursor?
dd
19.
How will you delete and replace a character under
cursor?
r
20.
How will you move cursor to the top of the screen?
H or shift h
21.
How will you move cursor to the middle of the
screen?
M
22.
How will you move cursor to the bottom of the
screen?
L
23.
What is the purpose of z , z+ , z- commands ?
Z+ to adjust the screen so that cursor is
at the top of the screen
Z
middle of the screen
Z- bottom of the screen
24.
How will you insert a character before cursor?
i
25.
how will you append a character after cursor?
a
26.
how will you append a character at end of the line?
A
27.
Write a command to search a specific word.
28.
How will you move cursor to last line of the file?
G
29.
write the syntax to search a specific word and
replace the word
%s/findingword/replacingword/g
30.
List out the no. of flags available in search and
replace commands and explain it in detail
31.
List out the commands which are communicating with
other users in Linux.
Write
Wall
Mail
Talk
32.
write the syntax to send a mail to multiple users
mail –s subject mailid1,mailid2
33.
what is the purpose of mesg command and explain it
in detail?
Mesg command is to approve or deny the
permission for write command
Mesg n will deny
Mesg y will approve
34.
How to send a mail with subject, cc and body?
Mail –s subject mailid
Cc:
Adsnldasndlasn
35.
how ftp is used in communication ?
ftp is file transfer protocol .. which
connects to a particular host and used to transfer files .
36.
explain in detail about mail command
37.
How will you copy a line x if the cursor is in line
y?
Execution mode.
:x cp y
5 mark questions
1.
Explain the operating modes in detail
2.
Explain cursor movement commands in vi editor
3.
Explain briefly about inserting and deleting
commands in vi editor
4.
What are the options in ftp command and explain in
detail
5.
Explain in detail about who command
6.
Write short notes on wall command
7.
Explain briefly about search and replace commands
8.
Explain briefly about yanking with examples
9.
Explain briefly about inserting and deleting
commands in vi editor
10.
Explain briefly about searching in vi editor
11.
Explain briefly about screen movement commands
12.
Explain about cursor movement commands
10 mark questions
1.
Explain briefly about communicating with other users
Module 5
2 mark questions
1.
What are the common administrative tasks of system
administrator in Linux?
The main and common job is the management
of whole system .. maintaining user accounts, managing disk space, maintaining
security .
2.
How to identify the administrative task of a system
administrator?
3.
What is the role of system administrator?
A system administrator, or sysadmin, is a person who is
responsible for the upkeep, configuration, and reliable operation ofcomputer systems;
especially multi-user computers,
such as servers.
The system administrator
seeks to ensure that the uptime, performance, resources, and security of the
computers he or she manages meet the needs of the users,
without exceeding the budget.
4.
What are the responsibilities of system
administrator?
5.
How to create a new user in Linux .
#Useradd (username ) .. is the syntax to add user .
6.
How will you add a new user?
Same as above.
7.
How to add a new user in to a group
#Useradd –G (groupname) (username) .. is
the syntax to add user to group.
8.
How to change the password for the particular user
#Passwd (username)
9.
What is the purpose of su and sudo command in Linux
Su command is to attain super user . by
login process using root password.
Sudo command is to attain super user
without root password.
10.
Write the syntax and attributes of su and sudo
command in Linux
$su
Password: anything
$sudo command
11.
How to modify the user account options
Usermod
(username) is the syntax
12.
How to add a user to multiple groups?
Usermod –a –G group1,group2,groupn
username
13.
How will you create a user with password expiry
date?
14.
Is it possible to disable a particular user account
temporarily?
Usermod –e yyyy-mm-dd username . here –e
means expire date.
15.
How to delete a particular user account
Userdel (username)
16.
What are the attributes used in deleting user
account?
Userdel (username) simply deletes the
user
Userdel –r (username) deletes all his files
and documents.
Userdel –f(username) forces the user to
be deleted even if he is logged in.
17.
How to add a new user temporarily?
18.
How to switch from normal user to root user?
Using
su command.
19.
Explain in detail about becoming super user using
su.
By using su
And then the root password a normal user
can switch to super user and get access to full system features. Like adding
user adding group ,, etc. enough.
20.
How to get system information with uname, host name?
uname gives the details about, name ,
version of the OS.. hostname gives details about host and domain of OS.
21.
How to install and remove the packages as an
administrator?
22.
How will you change the ownership of an user
account?
3 Mark questions
1.
Explain in detail about log files in linux
2.
Explain the file permissions in linux
3.
Explain in detail about disk partitions in linux
4.
Explain about uname and host name in linux
5.
Explain in detail about ownership of user accounts
6.
Explain the file security in linux
7.
Explain in detail about linux system monitoring performance.
8.
How to create a group and add a new user in it.
9.
Explain in detail about file system mounting in
linux.
10.
What is super user and explain it in detail.
11.
What is root user and explain it in detail.
12.
Explain in detail about creating and managing
groups.
10 Mark Questions
1.
Explain briefly about managing user accounts
2.
Explain in detail about log files
