Question Bank
ISRO Computer Science Exam - English
Duration: 90 · Questions: 80 · Max Marks: 80 · Language: 1
Computer Science
1
When two number are added in excess-3 code and the sum is less than 9 , then in order to get the correct answer it is necessary to
2
The characteristic equation of an SR filp-flop is given by
- A.Qn+1 = S+RQn
- B.Qn+1 = S
n+ 
Qn - C.Qn+1 = ​ + RQn
- D.Qn+1 = S+
Qn
3
A graph with n vertices and n-1 edges that is not a tree , is
4
Networks that use different technologies can be connected by using
5
A read bit can be read
6
The term ‘aging’ refers to
7
Consider a set of n tasks with known runtimes r1 ,r2………….. rn To be run on a uni processor machine . Which of the following processer scheduling algorithms will result in the maximum throughput ?
8
Consider a job scheduling program with 4 jobs J1 , J2, J3 and J4 With corresponding deadlines : (d1 , d2 , d3 , d4) = (4, 2, 4, 2). Which of the following is not a feasible schedule without violating any job schedule?
9
By using a eight bit optical encoder the degree of resolution that can be obtained is (approximately)
10
The principal of the locality of reference justifies the use of
11
Consider the following pseudo-code
x ; = 1;
I ; = 1;
While (x,=1000) begin
x ; =2x;
i ; = i+1;end;
what is the value of I at the end of the pseudo-code
x ; = 1;
I ; = 1;
While (x,=1000) begin
x ; =2x;
i ; = i+1;end;
what is the value of I at the end of the pseudo-code
12
The five items : A, B, C, D and E are pushed in stack, one after other starting from A. The stack is popped four items and each element is inserted in a queue . The two element are deleted from the queue and pushed back on the stack, Now one item is popped from the stack . The popped item is
13
Round Robin schedule is essentially the pre-emptive version of
14
The number of digit 1 present in the binary representative of 3 x 512 + 7 x 6 + 5 x 8 + 3 ? is
15
Assume that each character code consists of 8 bits. The number of characters that can be transmitted per second through an synchronous serial line at 2400 baud rate, and with two stop bits is
16
If the bandwidth of a single is 5 kHz and the lowest frequency is 52 kHz, what is the highest frequency
17
An Ethernet hub
18
Which of the following is an illegal array definition?
Type COLONGE: (LIME, PINE, MUSK, MENTHOL):
Type COLONGE: (LIME, PINE, MUSK, MENTHOL):
19
The team phong associated with
20
The Boolean expression 
is given by
is given by- A.A
- B.B
- C.​
- D.AB
21
The subnet mask 255.255.255.192
22
On a LAN, where are IP datagram transported?
23
In Ethernet, the source address field in the MAC frame is the ____ address.
24
Which of the following transmission media is not readily suitable to CSMA operation?
25
The postfix expression AB + CD – * can be evaluated using a
26
Both hosts and routers are TCP/IP protocol software. However, routers do not use protocol from all layers. The layer for which protocol software is not needed by a router is
27
Phase transition for each it are used in
28
The TCP sliding window
29
Study the following program
// precondition: x. =0
Public void demo (int x)
{ System. out. print(x%10)
If ((x/10 ) ! = 10)
{
Demo (x/10) ;
}
System. outsprint (x % 10)
}
Which of the following is printed as a result of the call demo (1234)?
// precondition: x. =0
Public void demo (int x)
{ System. out. print(x%10)
If ((x/10 ) ! = 10)
{
Demo (x/10) ;
}
System. outsprint (x % 10)
}
Which of the following is printed as a result of the call demo (1234)?
30
Of the following sort algorithms, which has execution time that is least dependent on initial ordering of the input ?
31
What is the bandwidth of the signal that ranges from 40 kHz 4 kHz
32
If there are five routers and six network in intranet using link state routing, how many routing tables are there ?
33
virtual memory is
34
The level of aggregation of information required for operational control is
35
Which Project 802 standard provides for a collision-free protocol?
36
The set of all Equivalence Classes of a set A of Cardinality C
37
0.75 decimal system is equivalent to ………. In octal system.
38
In an SR latch made by cross-coupling two NAND gates, if both S and R inputs are set to 0, then it will result in
39
Identify the correct translation into logical notation of the following assertion. Some boys in the class are taller than all girls Note: taller (x,y) is true if x is taller then y.
40
Company X shipped 5 computer chips, 1 of which was defective, and company Y shipped 4 computer chips, 2 of which were defective. One computer chip is to be chosen uniformly at a random from the 9 chips shipped by the companies. If the chosen chips is found to be defective, what is the probability that the chip came from the company Y?
41
The 0 and 1 in the binary numbering system are called Binary Digits or
42
What language does a browser typically interpret to display information from the World Wide Web ?
43
______ is the process of finding errors in software code.
44
The code for a Web page is written using _________.
45
A program is a sequence of ___________ written in a programming language.
46
Which of the following languages is more suited to a structured program ?
47
A computer program that converts assembly language to machine language to machine language is
48
The symbols used in an assembly language are
49
Which is a non-standard version of a computing language ?
50
A language which is close to that used with in the computer is
51
Program execution time would be minimum if the programs are written in
52
Which one of the following is not a type of a language processor ?
53
Which one of the following is called low level languages ?
54
Which is the limitation of high level language ?
55
Programming language which is used for scientific purposes and work is to be done in batches is
56
Programming language which is extension of programming language 'BASIC' is
57
Program subroutines are
58
Loop statement which is repeated to some given number of times is classified as
59
A program which interprets each line of high level program at time of execution is called
60
Set of data whose items are organized together is classified as
61
______ is a container that represents a value in a program .
62
To distinguish between different data types, a computer uses special ______ .
63
_______ is the same thing as a variable with one major difference. Its does not change, while the value of a variable can change throughout a program .
64
Array is a special type of variable used in many programming languages, such as ________
65
What is a segment of code that executes repeatedly based on a certain condition ?
66
What is defined as a set of code used to carry out specific tasks ?
67
What is used for a real world object that is to be used in a program ?
68
_______ is object oriented programming language that uses virtual functions, multiple inheritance, exception handling, polymorphism, etc .
69
C++ provides comprehensive coverage of abstract classes, such as ______ .
70
A linked list a linear collection of similar data elements called ______ .
71
______ was the first high-level language developed by john Backus at IBM in 1956
72
This language was developed by Dennis Ritchie of Bell Laboratories in order to implement the operating system UNIX .
73
C is known as
74
Which of the following is language processor ?
75
________ converts an assembly language program into machine language .
76
Which of the following language processors converts a high-level language program line by line into a machine language ?
77
Errors in a computer program are referred to as
78
Computer programs are written in a high level programming language; however, the human-readable version of a program is called ________ .
79
Which of the following is not a programming language ?
80
What is correcting errors in a program called ?