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3
answers
1
ISRO201824
Choose the correct statement  $A$=${$a$*$b$ $\mid$ $n= 1, 2, 3,$ ...} is a regular language The set $B$, consisting of all strings made up of only $a's$ and $b's$ having equal number of $a's$ and bs defines a regular language $L$(A*B)$ $\cap$B$ gives the set $A$ None of the above
answer edited
May 3, 2018
in
Others

1.2k
views
isro2018
3
answers
2
ISRO201877
What is one advantage of setting up a $DMZ$ (Demilitarized Zone) with two firewalls? You can control where traffic goes in the three networks You can do statefull packet filtering You can do load balancing Improve network performance
answered
May 1, 2018
in
Computer Networks

742
views
isro2018
computernetworks
networksecurity
firewalls
1
answer
3
ISRO201875
ln neural network, the network capacity is defined as: The traffic (tarry capacity of the network The total number of nodes in the network The number of patterns that can be stored and recalled in a network None of the above
commented
Apr 30, 2018
in
Others

451
views
isro2018
1
answer
4
ISRO201873
For a multiprocessor architecture, in which protocol a write transaction is forwarded to only those processors that are known ti possess a copy of newly altered cache line? Snoopy bus protocol Cache coherency protocol Directory based protocol None of the above
commented
Apr 30, 2018
in
Others

680
views
isro2018
4
answers
5
ISRO201878
Which one of the following algorithm is not used in asymmetric key cryptography? RSA Algorithm GillieHellman Algorithm Electronic Code Book Algorithm None of the above
commented
Apr 30, 2018
in
Others

757
views
isro2018
2
answers
6
ISRO201868
In multiprogrammed systems, it is advantageous if some programs such as editors anf compilers can be shared by several users. Which of the following must be true of multiprogrammed systems in order that a single copy of a program can be shared by several users? The program is a macro The program is recursive The program is reentrant I only II only III only I, II and III
answered
Apr 30, 2018
in
Others

543
views
isro2018
1
answer
7
ISRO201860
What is the output of tho following program? main(){ int x=2, y=5; if(x<y) return (x=x+y); else printf("z1"); printf("z2"); } $z2$ $z1z2$ Compilation error None of these
commented
Apr 30, 2018
in
Others

702
views
isro2018
4
answers
8
ISRO201849
in a file which contains $1$ million records and the order of the tree is $100$, then what is the maximum number of nodes to be accessed if $B$+ tree index is used? $5$ $4$ $3$ $10$
answered
Apr 26, 2018
in
Others

1.6k
views
isro2018
3
answers
9
ISRO201846
In cryptography, the following uses transposition ciphers and the keyword is LAYER. Encrypt the following message. (Spaces are omitted during encrypton) WELCOME TO NETWORK SECURITY! WMEKREETSILTWETCOOCYONRU! EETSICOOCYWMEKRONRU!LTWET LTWETONRU!WMEKRCOOCYEETSI ONRU!COOCYLTWETEETSIWMEKR
answered
Apr 26, 2018
in
Others

978
views
isro2018
3
answers
10
ISRO201815
The domain of the function log (log sin(x)) is: $0<x<$\pi$ $2n$\pi$<$x$<$(2n+1)$\pi$, for $n$ in $N$ Empty set None of the above
answer edited
Apr 26, 2018
in
Others

1.1k
views
isro2018
2
answers
11
ISRO201832
A computer uses ternary system instead of the traditional systen, An $n$ bit string in the binary system will occupy $3+n$ ternary digits $2n/3$ ternary digits $n$\log_{2}3$ ternary digits $n$\log_{3}2$ ternary digits
answered
Apr 24, 2018
in
Others

477
views
isro2018
2
answers
12
ISRO201830
Which of the following comment about peephole optimization is true? It is applied to small part of the code and applied repeatedly It can be used to optimize intermediate code It can be applied to a portion of the code that is not contiguous It is applied in symbol table to optimize the memory requirements.
answered
Apr 24, 2018
in
Others

704
views
isro2018
2
answers
13
ISRO20181
Consider the following program { int x=1; printf("%d",(*char(char*)&x)); } Assuming required header files are included and if the machine in which this program is executed is little endian, then the output will be 0 99999999 1 unpredictable
commented
Apr 23, 2018
in
Programming

2.1k
views
isro2018
programming
2
answers
14
ISRO201826
The $FSM$ (Finite State Machine) machine pictured in the figure above Complements a given bit pattern Finds $2's$ complement of a given bit pattern Increments a given bit pattern by $1$ Changes the sign bit
answered
Apr 23, 2018
in
Theory of Computation

1.3k
views
isro2018
finiteautomata
theoryofcomputation
mooremealymachine
2
answers
15
ISRO201813
The difference between a named pipe and a regular file in Unix is that Unlike a regular file, named pipe is a special file The data in a pipe is transient, unlike the content of a regular file Pipes forbid random accessing, while regular files do allow this. All of the above
answered
Apr 23, 2018
in
Others

821
views
isro2018
1
answer
16
ISRO201810
Which of the following comparisons between static and dynamic type checking incorrect? Dynamic type checking slows down the execution Dynamic type checking offers more flexibility to the programmers In contrast to Static type checking, dynamic type checking may cause failure in runtime due to type errors Unlike static type checking dynamic type checking is done during compilation
commented
Apr 23, 2018
in
Others

920
views
isro2018
2
answers
17
ISRODEC201771
A $32$$bit$ adder is formed by cascading $4$$bit$ CLA adder.The gate delays (latency) for getting the sum bits is $16$ $18$ $17$ $19$
commented
Apr 20, 2018
in
Digital Logic

2.3k
views
isrodec2017
1
answer
18
ISRODEC201737
A twoway set associative cache memory unit with a capacity of $16\, KB$ is built using a block size of $8\, words.$ The word length is $32bits.$ The physical address space is $4\, GB.$ The number of bits in the TAG, SET fields are $20,7$ $19,8$ $20,8$ $21,9$
commented
Apr 20, 2018
in
CO and Architecture

897
views
isrodec2017
cachememory
2
answers
19
ISRODEC201715
Consider the following table: $\text{Faculty(facName, dept, office, rank, dateHired)}$ facName dept office rank dateHired Ravi Art A101 Professor 1975 Murali Math M201 Assistant 2000 Narayanan Art A101 Associate 1992 Lakshmi Math M201 Professor 1982 Mohan CSC C101 Professor 1980 Sreeni ... $Faculty$ is Not in 3NF,in BCNF In 3NF,not in BCNF In 3NF, in BCNF Not in 3NF, not in BCNF
commented
Apr 19, 2018
in
Databases

1.8k
views
isrodec2017
3
answers
20
ISRODEC20176
The proposition $(P\Rightarrow Q)\wedge (Q\Rightarrow P)$ is a Tautology Contradiction Contingency Absurdity
commented
Apr 19, 2018
in
Mathematical Logic

992
views
isrodec2017
1
answer
21
ISRODEC20172
Consider the set of integers $I.$ Let $D$ denote "divides with an integer quotient" (e.g. $4D8$ but not $4D7$). Then $D$ is Reflexive, Not Symmetric, Transitive Not Reflexive, Not Antisymmetric, Transitive Reflexive, Antisymmetric, Transitive Not Reflexive, Not Antisymmetric, Not Transitive
commented
Apr 19, 2018
in
Set Theory & Algebra

2.2k
views
isrodec2017
settheory&algebra
relations
13
answers
22
GATE200715,ISRO201626
Consider the following segment of Ccode: int j, n; j = 1; while (j <= n) j = j * 2; The number of comparisons made in the execution of the loop for any $n > 0$ is: $\lceil \log_2n \rceil +1$ $n$ $\lceil \log_2n \rceil$ $\lfloor \log_2n \rfloor +1$
comment edited
Apr 18, 2018
in
Algorithms

9.4k
views
gate2007
algorithms
timecomplexity
normal
isro2016
2
answers
23
GATE2004IT11, ISRO201133
What is the bit rate of a video terminal unit with $80$ characters/line, $8$ $\text{bits/character}$ and horizontal sweep time of $100$ $\text{µs}$ (including $20$ $\text{µs}$ of retrace time)? $8$ $\text{Mbps}$ $6.4$ $\text{Mbps}$ $0.8$ $\text{Mbps}$ $0.64$ $\text{Mbps}$
comment edited
Apr 13, 2018
in
Operating System

2.8k
views
gate2004it
operatingsystem
iohandling
easy
isro2011
3
answers
24
How many DFA's exist with three states over the input alphabet {0,1}
Is there any procedure to generalize these types of problems ? Thanks in advance
commented
Mar 27, 2018
in
Theory of Computation

5.3k
views
theoryofcomputation
permutationandcombination
finiteautomata
numberofdfa
1
answer
25
Peterlinz question
Please write grammar for it and explain with example. $L=\{w \: : n_a(w) > n_b(w) \}$
answered
Mar 5, 2018
in
Theory of Computation

156
views
grammar
theoryofcomputation
3
answers
26
GATE201842
Consider the following four relational schemas. For each schema , all nontrivial functional dependencies are listed, The bolded attributes are the respective primary keys. Schema I: Registration(rollno, courses) Field courses' is a setvalued attribute containing the set of ... Which one of the relational schemas above is in 3NF but not in BCNF? Schema I Schema II Schema III Schema IV
commented
Feb 25, 2018
in
Databases

2.9k
views
gate2018
databases
databasenormalization
normal
3
answers
27
GATE201839
In a system, there are three types of resources: $E, F$ and $G$. Four processes $P_0$, $P_1$, $P_2$ and $P_3$ execute concurrently. At the outset, the processes have declared their maximum resource requirements using a matrix named Max as given below. For example, ... of $F$ were available The system is not in $safe$ state, but would be $safe$ if one more instance of $G$ were available
commented
Feb 23, 2018
in
Operating System

2.3k
views
gate2018
operatingsystem
deadlockpreventionavoidancedetection
normal
6
answers
28
GATE201822
Consider the sequential circuit shown in the figure, where both flipflops used are positive edgetriggered D flipflops. The number of states in the state transition diagram of this circuit that have a transition back to the same state on some value of "in" is ____
commented
Feb 23, 2018
in
Digital Logic

5k
views
gate2018
digitallogic
flipflop
numericalanswers
normal
1
answer
29
ISRO200949
$x=a \cos(t), y=b \sin(t)$ is the parametric form of Ellipse Hyperbola Circle Parabola
commented
Feb 11, 2018
in
Calculus

1.1k
views
isro2009
calculus
3
answers
30
ISRO200709
Eigen vectors of $\begin{bmatrix} 1 && \cos \theta \\ \cos \theta && 1 \end{bmatrix}$ are $\begin{bmatrix} a^n && 1 \\ 0 && a^n \end{bmatrix}$ $\begin{bmatrix} a^n && n \\ 0 && a^n \end{bmatrix}$ ... $\begin{bmatrix} a^n && na^{n1} \\ n && a^n \end{bmatrix}$
commented
Feb 9, 2018
in
Linear Algebra

2.3k
views
isro2007
linearalgebra
matrices
eigenvalue
0
answers
31
Merge Sort
Let A,B,C,D,E are sorted sequences having length 70,74,80,85,102 respectively.They are merged into a single sequence by merging together two sequences at a time.The minimum number of comparisons that will be needed by algorithm in best case for going merging is _________.
commented
Jan 31, 2018
in
Algorithms

387
views
mergesort
algorithms
sorting
8
answers
32
GATE201041
Let $w$ be any string of length $n$ in $\{0,1\}^*$. Let $L$ be the set of all substrings of $w$. What is the minimum number of states in nondeterministic finite automation that accepts $L$? $n1$ $n$ $n+1$ $2^{n1}$
commented
Jan 28, 2018
in
Theory of Computation

4.7k
views
gate2010
theoryofcomputation
finiteautomata
normal
minimalstateautomata
7
answers
33
GATE201037
The program below uses six temporary variables $a, b, c, d, e, f$. a = 1 b = 10 c = 20 d = a + b e = c + d f = c + e b = c + e e = b + f d = 5 + e return d + f Assuming that all operations take their operands from registers, what is the minimum number of registers needed to execute this program without spilling? $2$ $3$ $4$ $6$
commented
Jan 26, 2018
in
Compiler Design

5.4k
views
gate2010
compilerdesign
targetcodegeneration
registerallocation
normal
7
answers
34
GATE2017233
A system shares $9$ ... following best describes current state of the system? Safe, Deadlocked Safe, Not Deadlocked Not Safe, Deadlocked Not Safe, Not Deadlocked
commented
Jan 26, 2018
in
Operating System

3.8k
views
gate20172
operatingsystem
resourceallocation
normal
3
answers
35
GATE2017231
For any discrete random variable $X$, with probability mass function $P(X=j)=p_j, p_j \geq 0, j \in \{0, \dots , N \}$, and $\Sigma_{j=0}^N \: p_j =1$, define the polynomial function $g_x(z) = \Sigma_{j=0}^N \: p_j \: z^j$. For a certain discrete random ... $Y$ is $N \beta(1\beta)$ $N \beta$ $N (1\beta)$ Not expressible in terms of $N$ and $\beta$ alone
commented
Jan 26, 2018
in
Probability

4.5k
views
gate20172
probability
randomvariable
5
answers
36
GATE2017224
Consider the quadratic equation $x^213x+36=0$ with coefficients in a base $b$. The solutions of this equation in the same base $b$ are $x=5$ and $x=6$. Then $b=$ _____
commented
Jan 25, 2018
in
Set Theory & Algebra

4.2k
views
gate20172
polynomials
numericalanswers
settheory&algebra
6
answers
37
GATE2017232
Consider the following expression grammar $G$: $E \rightarrow ET \mid T$ $T \rightarrow T + F \mid F$ $F \rightarrow (E) \mid id$ Which of the following grammars is not left recursive, but is equivalent to $G$? $E \rightarrow ET \mid T$ ... $F \rightarrow (E) \mid id$ $E \rightarrow TX \mid (TX)$ $X \rightarrow TX \mid +TX \mid \epsilon$ $T \rightarrow id$
commented
Jan 25, 2018
in
Compiler Design

3k
views
gate20172
grammar
leftrecursion
4
answers
38
MadeEasy Test Series: Combinatory  Permutations And Combinations
MY SOLUTION : Fix the root then next level 2 elements ( 2! possibilities) next level 4 elements( 4! possibilities) last level 2 elements ( 2! possibilities) total possibility = 2! * 4! * 2! = 2 * 24 * 2 = 96 what ... that if node of above graph is filled with these elements it satisfies max heap property a)96 b)896 c)2688 d) none
answered
Jan 24, 2018
in
Combinatory

963
views
permutationandcombination
madeeasytestseries
1
answer
39
Identify class of the language
L={ xy  x,y$\epsilon$ (a+b)*, na(x) = nb(y) }
asked
Jan 24, 2018
in
Theory of Computation

108
views
theoryofcomputation
0
answers
40
Stack algorithm
Is Most Recently Used (MRU) Page replacement algorithm a 'Stack Algorithm' i.e. it doesn't suffer from Belady's Anomaly ?
commented
Jan 24, 2018
in
Operating System

143
views
operatingsystem
al
50,647
questions
56,497
answers
195,493
comments
100,826
users