Operating System Architecture Set 21 MCQs

Q1 | To invoke "bash" you type

bsh

sh

bsh

either a or c

Q2 | The last character of the "bash" prompt is usually

$

#

%

?

Q3 | The part of the Unix operating system that interacts with the hardware is called

gnu project

the kernal

the shell

linux

Q4 | To start a process in the background, enter the command with this character at the end.

$

#

&

%

Q5 | Which of the following is not a major Unix shell?

x shell

c shell

bash shell

korn shell

Q6 | A personal run control file for bash is

.cshrc

profile

.bsh

.bashrc

Q7 | The shell in the Unix system is the

outer layer of a seed

user interface with the operating system

provides a prompt

both b and c

Q8 | Applications of Shell programming include

simplifying complex jobs

automating repetitive tasks

both a and b

none of the above

Q9 | Another term for shell programs is

scripts

c programs

compiled programs

shell command language

Q10 | Shell programs are

compiled

interpreted

command processed

none of the above

Q11 | A shell program is a

binary file

system file

text file

linked file

Q12 | Comments in a shell program are important because

keeps complex programs understandable

other programmers may try to read your program

you may revise an old program

all of the above

Q13 | Flow control in a shell program allows parts of a shell program to be executed

repeatedly

conditionally

all of the above

none of the above

Q14 | In "bash", "if" constructs are ended with

fi

endif

end

none of the above

Q15 | Which of the following is not a iterative construct in "bash"?

if

for

until

while

Q16 | A loop that continues indefinitely is called a

indefinite loop

non-stop loop

infinite loop

none of the above

Q17 | The asterisk is a metacharacter which in the command "ls *.txt" means

any single character

any combination of one or more characters

any combination of zero or more characters

none of the above

Q18 | A metacharacter is any character that

is taken literally

represents any string of characters that fit its definition

is an "asterisk" or "question mark

all of the above

Q19 | Which of the following Unix utilities are not commonly used to process regular expressions?

grep

sed

cut

awk

Q20 | Which programming language has a powerful regular expression engine?

c++

perl

pearl

c

Q21 | Which meta-noncharacter is used to indicate the end of the line?

^

?

>

$

Q22 | Which meta-noncharacter is used to indicate the beginning of the line?

^

?

<

$

Q23 | The character separating fields is called a

separator

delimiter

blank

semicolon

Q24 | Awk" is a program that is primarily concerned with formatting output. It is designed to work best with pieces of data called

records

characters

fields

strings

Q25 | A bootstrap is :

the flat cable that connects the cpu to thre printer

the flat cable from the disk controller card to the disk driver

additional memory device

a small intialization program to start up the computer