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all the questions of ISRO 2020 question paper
Recent questions tagged isro-2020
1
vote
1
answer
1
ISRO cs 2020
Given R(ABCD) FD's={A->C,B->D}. Is this in 3NF?If NO why?
Sai eswar
asked
in
Databases
Aug 20, 2023
by
Sai eswar
533
views
databases
isro-2020
0
votes
0
answers
2
ISRO2020-62
#include int main() { int x; char *ptr; x=622,100,101; printf("%d",(*(char *)&x)*(x%3)); return 0; } In this question what is the meaning of “ *(char *)&x “ ? please explain it.
Ray Tomlinson
asked
in
Programming in C
Jul 5, 2023
by
Ray Tomlinson
857
views
isro-2020
programming-in-c
pointers
programming
6
votes
3
answers
3
ISRO2020-66
The following circuit compares two $2$-bit binary numbers, $X$ and $Y$ represented by $X_1X_0$ and $Y_1Y_0$ respectively. ($X_0$ and $Y_0$ represent Least Significant Bits) Under what conditions $Z$ will be $1$? $X>Y$ $X<Y$ $X=Y$ $X!=Y$
Satbir
asked
in
Digital Logic
Jan 13, 2020
by
Satbir
3.8k
views
isro-2020
digital-logic
digital-circuits
circuit-output
normal
1
vote
2
answers
4
ISRO2020-56
For the distributions given below: Which of the following is correct for the above distributions? Standard deviation of $A$ is significantly lower than standard deviation of $B$ Standard deviation of $A$ is slightly lower than standard deviation of $B$ Standard ... $B$ Standard deviation of $A$ is significantly higher than standard deviation of $B$
Satbir
asked
in
Probability
Jan 13, 2020
by
Satbir
2.0k
views
isro-2020
probability
standard-deviation
normal
4
votes
4
answers
5
ISRO2020-57
The hardware implementation which provides mutual exclusion is Semaphores Test and set instructions Both options None of the options
Satbir
asked
in
Operating System
Jan 13, 2020
by
Satbir
5.1k
views
isro-2020
operating-system
semaphore
mutual-exclusion
normal
6
votes
5
answers
6
ISRO2020-55
If $x+2y=30$, then $\left(\dfrac{2y}{5}+\dfrac{x}{3} \right) + \left (\dfrac{x}{5}+\dfrac{2y}{3} \right)$ will be equal to $8$ $16$ $18$ $20$
Satbir
asked
in
Quantitative Aptitude
Jan 13, 2020
by
Satbir
2.9k
views
isro-2020
quantitative-aptitude
easy
lcm-hcf
4
votes
4
answers
7
ISRO2020-54
Checksum field in TCP header is ones complement of sum of header and data in bytes ones complement of sum of header, data and pseudo header in $16$ bit words dropped from $\textsf{IPv6}$ header format better than $\textsf{md5}$ or $\textsf{sh1}$ methods
Satbir
asked
in
Computer Networks
Jan 13, 2020
by
Satbir
3.5k
views
isro-2020
computer-networks
tcp
normal
6
votes
6
answers
8
ISRO2020-18
Consider a $2$-dimensional array $x$ with $10$ rows and $4$ columns, with each element storing a value equivalent to the product of row number and column number. The array is stored in row-major format. If the first element $x[0][0]$ occupies the memory location ... , which all locations (in decimal) will be holding a value of $10$? $1018,1019$ $1022,1041$ $1013,1014$ $1000,1399$
Satbir
asked
in
Programming in C
Jan 13, 2020
by
Satbir
9.6k
views
isro-2020
programming
array
normal
4
votes
3
answers
9
ISRO2020-17
Which one indicates a technique of building cross compilers? Beta cross Canadian cross Mexican cross X-cross
Satbir
asked
in
Compiler Design
Jan 13, 2020
by
Satbir
2.2k
views
isro-2020
compiler-design
compilation-phases
normal
6
votes
5
answers
10
ISRO2020-16
A computer which issues instructions in order, has only $2$ registers and $3$ opcodes $\text{ADD, SUB}$ and $\text{MOV}$. Consider $2$ ... by how many $\text{MOV}$ instructions? $\text{Case 2,2}$ $\text{Case 2,3}$ $\text{Case 1,2}$ $\text{Case 1,3}$
Satbir
asked
in
CO and Architecture
Jan 13, 2020
by
Satbir
4.5k
views
isro-2020
co-and-architecture
machine-instruction
normal
4
votes
5
answers
11
ISRO2020-15
A stack organized computer is characterised by instructions with indirect addressing direct addressing zero addressing index addressing
Satbir
asked
in
CO and Architecture
Jan 13, 2020
by
Satbir
4.3k
views
isro-2020
co-and-architecture
addressing-modes
normal
6
votes
5
answers
12
ISRO2020-61
What is the output of the code given below? # include<stdio.h> int main() { char name[]="satellites"; int len; int size; len= strlen(name); size = sizeof(name); printf("%d",len*size); return 0; } $100$ $110$ $40$ $44$
Satbir
asked
in
Programming in C
Jan 13, 2020
by
Satbir
3.7k
views
isro-2020
programming
array
normal
3
votes
4
answers
13
ISRO2020-60
A given grammar is called ambiguous if two or more productions have the same non-terminal on the left hand side a derivation tree has more than one associated sentence there is a sentence with more than one derivation tree corresponding to it brackets are not present in the grammar
Satbir
asked
in
Compiler Design
Jan 13, 2020
by
Satbir
8.9k
views
isro-2020
compiler-design
ambiguous-grammar
easy
2
votes
3
answers
14
ISRO2020-59
Consider the following recursive C function that takes two arguments unsigned int rer(unsigned int n, unsigned int r){ if(n>0)return(n%r + rer(n/r,r)); else retturn 0; } What is the return value of the function $rer$ when it is called as $rer(513,2)$? $9$ $8$ $5$ $2$
Satbir
asked
in
Programming in C
Jan 13, 2020
by
Satbir
1.8k
views
isro-2020
programming
normal
recursion
4
votes
5
answers
15
ISRO2020-58
Remote Procedure Calls are used for communication between two processes remotely different from each other on the same system communication between two processes on the same system communication between two processes on the separate systems none of the above
Satbir
asked
in
Computer Networks
Jan 13, 2020
by
Satbir
4.1k
views
isro-2020
computer-networks
inter-process-communication
normal
3
votes
1
answer
16
ISRO2020-42
Which of the following is a type of a out-of-order execution, with the reordering done by a compiler loop unrolling dead code elimination strength reduction software pipelining
Satbir
asked
in
Compiler Design
Jan 13, 2020
by
Satbir
2.9k
views
isro-2020
compiler-design
code-optimization
normal
7
votes
5
answers
17
ISRO2020-41
Minimum number of states required in DFA accepting binary strings not ending in $\text{“101”}$ is $3$ $4$ $5$ $6$
Satbir
asked
in
Theory of Computation
Jan 13, 2020
by
Satbir
7.0k
views
isro-2020
theory-of-computation
finite-automata
normal
1
vote
2
answers
18
ISRO2020-40
Which of the following classes of languages can validate an $\text{IPv4}$ address in dotted decimal format? It is to be ensured that the decimal values lie between $0$ and $255$. RE and higher CFG and higher CSG and higher Recursively enumerable language
Satbir
asked
in
Theory of Computation
Jan 13, 2020
by
Satbir
2.3k
views
isro-2020
theory-of-computation
normal
identify-class-language
2
votes
4
answers
19
ISRO2020-39
The language which is generated by the grammar $S \rightarrow aSa \mid bSb \mid a \mid b$ over the alphabet of $\{a,b\}$ is the set of Strings that begin and end with the same symbol All odd and even length palindromes All odd length palindromes All even length palindromes
Satbir
asked
in
Theory of Computation
Jan 13, 2020
by
Satbir
2.1k
views
isro-2020
theory-of-computation
context-free-grammar
normal
3
votes
3
answers
20
ISRO2020-38
Which of the following is true? Every subset of a regular set is regular Every finite subset of non-regular set is regular The union of two non regular set is not regular Infinite union of finite set is regular
Satbir
asked
in
Theory of Computation
Jan 13, 2020
by
Satbir
2.1k
views
isro-2020
theory-of-computation
regular-language
easy
2
votes
4
answers
21
ISRO2020-37
Context free languages are closed under union, intersection union, kleene closure intersection, complement complement, kleene closure
Satbir
asked
in
Theory of Computation
Jan 13, 2020
by
Satbir
2.7k
views
isro-2020
theory-of-computation
context-free-language
easy
9
votes
1
answer
22
ISRO2020-6
A non-pipelined CPU has $12$ general purpose registers $(R0,R1,R2, \dots ,R12)$. Following operations are supported $\begin{array}{ll} \text{ADD Ra, Rb, Rr} & \text{Add Ra to Rb and store the result in Rr} \end{array}$ ... $R0,R1$ and $R2$ and contents of these registers must not be modified. $5$ $6$ $7$ $8$
Satbir
asked
in
CO and Architecture
Jan 13, 2020
by
Satbir
3.4k
views
isro-2020
co-and-architecture
pipelining
normal
8
votes
4
answers
23
ISRO2020-5
An array of $2$ ...
Satbir
asked
in
CO and Architecture
Jan 13, 2020
by
Satbir
3.7k
views
isro-2020
co-and-architecture
floating-point-representation
normal
little-endian-big-endian
3
votes
4
answers
24
ISRO2020-48
Properties of $\text{ DELETE'}$ and $\text{ TRUNCATE'}$ commands indicate that After the execution of $\text{ TRUNCATE'}$ operation, $\text{COMMIT}$, and $\text{ROLLBACK}$ statements cannot be performed to retrieve the lost data, while $\text{ DELETE'}$ ... allow it After the execution of $\text{ DELETE'}$ and $\text{ TRUNCATE'}$ operation no retrieval is possible for the lost data
Satbir
asked
in
Databases
Jan 13, 2020
by
Satbir
3.0k
views
isro-2020
databases
sql
normal
7
votes
5
answers
25
ISRO2020-47
How many total bits are required for a direct-mapped cache with $128$ KB of data and $1$ word block size, assuming a $32$-bit address and $1$ word size of $4$ bytes? $2$ Mbits $1.7$ Mbits $2.5$ Mbits $1.5$ Mbits
Satbir
asked
in
CO and Architecture
Jan 13, 2020
by
Satbir
6.0k
views
isro-2020
co-and-architecture
cache-memory
direct-mapping
normal
6
votes
3
answers
26
ISRO2020-46
A magnetic disk has $100$ cylinders, each with $10$ tracks of $10$ sectors. If each sector contains $128$ bytes, what is the maximum capacity of the disk in kilobytes? $1,280,000$ $1280$ $1250$ $128,000$
Satbir
asked
in
CO and Architecture
Jan 13, 2020
by
Satbir
3.8k
views
isro-2020
co-and-architecture
disk
normal
2
votes
2
answers
27
ISRO2020-45
Avalanche effect in cryptography refers Large changes in cipher text when the keyword is changed minimally Large changes in cipher text when the plain text is changed Large Impact of keyword change to length of the cipher text None of the above
Satbir
asked
in
Computer Networks
Jan 13, 2020
by
Satbir
2.3k
views
isro-2020
computer-networks
cryptography
normal
1
vote
2
answers
28
ISRO2020-44
In a columnar transportation cipher, the plain text is the tomato is a plant in the night shade family , keyword is $\text{TOMATO}$ . The cipher text is $\text{ TINESAX / EOAHTFX / HTLTHEY / MAIIAIX / TAPNGDL / OSTNHMX }$ ... $\text{ EOAHTFX / TINESAX / HTLTHEY / MAIIAIX / TAPNGDL / OSTNHMX }$
Satbir
asked
in
Computer Networks
Jan 13, 2020
by
Satbir
3.4k
views
isro-2020
computer-networks
cryptography
normal
2
votes
3
answers
29
ISRO2020-43
Which of the following is an efficient method of cache updating? Snoopy writes Write through Write within Buffered write
Satbir
asked
in
CO and Architecture
Jan 13, 2020
by
Satbir
3.7k
views
isro-2020
co-and-architecture
cache-memory
normal
5
votes
3
answers
30
ISRO2020-53
The persist timer is used in TCP to To detect crashes from the other end of the connection To enable retransmission To avoid deadlock condition To timeout $\textsf{FIN_Wait1}$ condition
Satbir
asked
in
Computer Networks
Jan 13, 2020
by
Satbir
3.0k
views
isro-2020
computer-networks
tcp
normal
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