**Correct Answer : D**

**Explanation :**

speaks about itself

Correct Answered :

Wrong Answered :

1. Which of the phrases given below should replace the phrase printed in bold type in the sentence "I need not offer any explanation regarding this incident my behavior **is speaking itself **." would make it grammatically correct?

A

will speak to itself

B

speaks for itself

C

has been speaking

D

speaks about itself

English
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

speaks about itself

Correct Answered :

Wrong Answered :

2. The Antonym of the word EXODUS is

A

Influx

B

Home coming 30

C

Return

D

Restoration

English
KUET MCA 2022
REPORT
**Correct Answer : A**

**Explanation : **

Exodus means a mass departure of people. So, the opposite of the word will be **influx.** Influx means arrival or entry of people in large numbers.

Correct Answered :

Wrong Answered :

3. Out of four alternatives, choose the one which can be substituted for the given sentence.

A style in which a writer makes a display of his knowledge.

A

Pendantic

B

Verbose

C

Pompous

D

Ornate

English
KUET MCA 2022
REPORT
**Correct Answer : A**

**Explanation : **

Pendantic

Correct Answered :

Wrong Answered :

4. Select the pair which has the same relationship as PAIN : SEDATIVE

A

Comfort : Stimulant

B

Grief : Consolation

C

Trance : Narcotic

D

Ache : Extraction

English
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

Grief : Consolation

Correct Answered :

Wrong Answered :

5. A, B and C can complete a piece of work in 14, 6 and 12 days respectively. Working together, they will complete the work in.

A

19/9 days

B

27 days

C

28/9 days

D

25/8 days

Aptitude
KUET MCA 2022
REPORT
**Correct Answer : C**

**Explanation : **

28/9 days

Correct Answered :

Wrong Answered :

6. The ratio present age of father to that of son is 7 : 2. After 10 years their ages will be in the ratio of 9 : 4. The present age of the father is :

A

20 years

B

25 years

C

30 years

D

35 years

Aptitude
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

35 years

Correct Answered :

Wrong Answered :

7. A 1200 m long train crosses a tree in 120 sec, how much time will it take to pass a platform 700 m long?

A

50 sec

B

80 sec

C

190 sec

D

240 sec

Aptitude
KUET MCA 2022
REPORT
**Correct Answer : C**

**Explanation : **

**190 sec**

Correct Answered :

Wrong Answered :

8. If MIND becomes KGLB and ARGUE becomes YPESC, then what will DIAGRAM be in that code?

A

BGYEPYK

B

BGYPYEK

C

GLPEYKB

D

LKBGYPK

Aptitude
KUET MCA 2022
REPORT
**Correct Answer : A**

**Explanation : **

BGYEPYK

Correct Answered :

Wrong Answered :

9.

A

a + b = 1

B

a - b = 1

C

a = b

D

a^{2} + b^{2} = 1

Mathematics
KUET MCA 2022
REPORT
**Correct Answer : A**

**Explanation : **

a + b = 1

Correct Answered :

Wrong Answered :

10. If one root of the quadratic equation 2x² + kx - 6 = 0 is 2, then value of k is:

A

1

B

-1

C

2

D

-1

Mathematics
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

Given: One root of 2x^{2} + kx – 6 = 0 is 2

Then At x = 2, the equation will be satisfied.

2 (2)^{2} + k × 2 – 6 = 0

8 + 2 k – 6 = 0

2 k + 2 = 0

K = –1

So now the equation becomes 2x^{2} + 2x – 6 = 0

For this equation, Product of the roots = (–6/2)

Product of roots = – 3

Let a and b be the roots of the equation and it is given that a = 2

2 × b = –3

B = –3/2

Hence the value of k = –1 and other root is –3/2.

Correct Answered :

Wrong Answered :

11. if a, b, c are in AP then:

A

b = a + c

B

2b = a + c

C

b^{2} = a + c

D

2b^{2} = a + c

ma
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

##### When a,b,c are in A.P.,

First term is $t_{1}=a$Second term $t_{2}=a+d=b$third term is $t_{3}=a+2d=c$Now $a+c=a+(a+2d)=2a+2d=2(a+d)=2b$

##### $⇒a+c=2b$

First term is $t_{1}=a$Second term $t_{2}=a+d=b$third term is $t_{3}=a+2d=c$Now $a+c=a+(a+2d)=2a+2d=2(a+d)=2b$

Correct Answered :

Wrong Answered :

12. If repetition of the digits is allowed, then the number of even natural numbers having three digits is :

A

250

B

350

C

450

D

550

Mathematics
KUET MCA 2022
REPORT
**Correct Answer : C**

**Explanation : **

If repetition of the digits is allowed, then the number of even natural numbers having three digits is **450**.

Correct Answered :

Wrong Answered :

13. Find the radius and center of a circle given by the equation 2x² + y² - 4x -6y - 12 = 0

A

Radius = 5, Center = (2, 3)

B

Radius = 5, Center = (3, 2)

C

Radius = 1, Center = (2, 3)

D

Radius = 1, Center = (3, 2)

Mathematics
KUET MCA 2022
REPORT
**Correct Answer : A**

**Explanation : **

##### Radius = 5, Center = (2, 3)

Correct Answered :

Wrong Answered :

14. What is the degree of the differential equation

A

1

B

2

C

3

D

4

Mathematics
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

2

Correct Answered :

Wrong Answered :

15. The solution of the differential equation dy = (1 + y²)dx is

A

y = tanx + c

B

y = tan(x + c)

C

tan^{-1}(y + c) = x

D

tan^{-1}(y + c) = 2x

ma
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

y = tan(x + c)

Correct Answered :

Wrong Answered :

16. When the sun`s altitude changes from **30**° to 6**0**° the length of the shadow of a tower decreases by 70m. What is the height of the tower?

A

35 m

B

140 m

C

60.6 m

D

20.2 m

Mathematics
KUET MCA 2022
REPORT
**Correct Answer : C**

**Explanation : **

When sun`s altitude changes from 30° to 60°, the length of the shadow of a tower decreases by 70 m.

∴ The height of the tower is **60.6 m**.

Correct Answered :

Wrong Answered :

17. What will be the probability of getting odd numbers if a dice is thrown?

A

1/2

B

2

C

4/2

D

5/2

Mathematics
KUET MCA 2022
REPORT
**Correct Answer : A**

**Explanation : **

1/2

Correct Answered :

Wrong Answered :

18. A continuous variable has the distribution?

A

1/4

B

1/8

C

1/16

D

1/2

Mathematics
KUET MCA 2022
REPORT
**Correct Answer : C**

**Explanation : **

1/16

Correct Answered :

Wrong Answered :

19. Consider a Poisson distribution for the tossing of a biased coin. The mean for this distribution is µ. The standard deviation for this distribution is given by :

A

√μ

B

µ^{2}

C

µ

D

1/µ

Mathematics
KUET MCA 2022
REPORT
**Correct Answer : A**

**Explanation : **

Correct Answered :

Wrong Answered :

20. If the distribution is negatively skewed, then the :

A

Mean is more than mode

B

Mean is less than mode

C

Median is at right to the mode

D

Mean is at right to Median

Statistics
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

If the mean is less
than the mode, the distribution is negatively skewed. If the mean is
greater than the median, the distribution is positively skewed. If the
mean is less than the median, the distribution is negatively skewed.

Correct Answered :

Wrong Answered :

21. Given y = 5e3x+ sinx, dydx is

A

5e³ˣ + cos x

B

15e³ˣ + cos x

C

15e³ˣ - cos x

D

5e³ˣ + sin x

Mathematics
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

y = 5e^{3x} + sin(x)

First, to find the derivative, dydx of an exponential function, we use this general form:

ae^{nx} = a* dydx(nx)e^{nx} = a*ne^{nx}

dydx of sin(x) = cos(x)

Applying this to the question we have:

dydx = 5* dydx(3x)e^{3x} + cos(x)

And,

dydx(3x) = 3

Therefore,

dydx = 15e^{3x} + cos(x)

Correct Answered :

Wrong Answered :

22. Ratio of volume of a cone to the volume of a cylinder for same base radius and same height is ____.

A

3

B

1/3

C

2

D

1/2

Mathematics
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

1/3

Correct Answered :

Wrong Answered :

23. The basic architecture of a computer system was developed by

A

John Von Neumann

B

Charles Babbage

C

Blaise Pascal

D

Garden Moore

Computer
KUET MCA 2022
REPORT
**Correct Answer : A**

**Explanation : **

The von Neumann
architecture — also known as the von Neumann model or Princeton
architecture — is a computer architecture based on a 1945 description by
**John von Neumann**, and by others, in the First Draft of a Report on the EDVAC.

Correct Answered :

Wrong Answered :

24. Conversion of hexadecimal number (1D7F)_{16 }to a decimal number is

A

7551_{10}

B

8771_{10}

C

5557_{10}

D

7781_{10}

Computer
KUET MCA 2022
REPORT
**Correct Answer : A**

**Explanation : **

= 1*16^{3}+ 13*16^{2}+ 7*16^{1}+ 15*16^{0}= 4076 + 3328 + 112 + 15 = 7551

Correct Answered :

Wrong Answered :

25. How many bytes does 4 kilobytes represent?

A

1000

B

1024

C

4096

D

8196

Computer
KUET MCA 2022
REPORT
**Correct Answer : C**

**Explanation : **

KB to Bytes Conversion Table

Kilobytes (KB) | Bytes (B) decimal | Bytes (B) binary |
---|---|---|

4 KB | 4000 Bytes | 4096 Bytes |

5 KB | 5000 Bytes | 5120 Bytes |

6 KB | 6000 Bytes | 6144 Bytes |

7 KB | 7000 Bytes | 7168 Bytes |

Correct Answered :

Wrong Answered :

26. Which of the following address is generated by CPU?

A

Logical address

B

Physical address

C

Actual address

D

Simple address

Computer
KUET MCA 2022
REPORT
**Correct Answer : A**

**Explanation : **

A **logical address**
is generated by CPU while a program is running. Since a logical address
does not physically exists it is also known as a virtual address. This
address is used as a reference by the CPU to access the actual physical
memory location.

Correct Answered :

Wrong Answered :

27. In which addressing mode, the effective address of the operand is generated by adding a constant value to the contents of a register?

A

Absolute mode

B

Indirect mode

C

Immediate mode

D

Index mode

Computer
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

**Base indexed mode** : The effective address of the operand is generated by adding a constant value to the content of a register.

Correct Answered :

Wrong Answered :

28. Which of the following Boolean rules is correct?

A

A + 0 = 0

B

A + 1 = 1

C

A + A = A.A

D

A + A.B = A + B

Computer
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

A + A.B = A + B

Correct Answered :

Wrong Answered :

29. The performance of cache memory is frequently measured in terms of a quantity called

A

Miss ratio

B

Latency ratio

C

Read ratio

D

Hit ratio

Computer
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

The performance of cache memory is frequently measured in terms of a quantity called **Hit ratio**.

Correct Answered :

Wrong Answered :

30. In C++, which of the following operator cannot be overloaded?

A

^

B

==

C

.

D

!

Computer
KUET MCA 2022
REPORT
**Correct Answer : C**

**Explanation : **

Some operators cannot be overloaded which include **sizeof operator, typeid, Scope resolution (::), Class member access operator (.), Ternary or conditional operator (?:)**.
These operators cannot be overloaded because it can cause serious
programming issues or errors and also it is syntactically not possible.

Correct Answered :

Wrong Answered :

31. Which of the following is true about virtual functions in C++?

A

Virtual functions are functions that can be overridden in derived class with the same signature.

B

Virtual functions enable run-time polymorphism in a inheritance hierarchy.

C

If a function is virtual in the base class, the most-derived class implementation of the function is called according to the actual type of the object referred to, regardless of the declared type of the pointer or reference. In non-virtual functions, the functions are called according to the type of reference or pointer.

D

All of these

Computer
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

All of these

Correct Answered :

Wrong Answered :

32. How many types of access specifiers are provided in OPP (C++)?

A

1

B

2

C

3

D

4

Computer
KUET MCA 2022
REPORT
**Correct Answer : C**

**Explanation : **

In C++, there are **three**
access specifiers: public - members are accessible from outside the
class. private - members cannot be accessed (or viewed) from outside the
class. protected - members cannot be accessed from outside the class,
however, they can be accessed in inherited classes.

Correct Answered :

Wrong Answered :

33. What is the base data type of a pointer variable by which the memory would be allocated to it?

A

Int

B

Do datatype

C

Depends upon the type of the variable to which it is pointing

D

Unsigned int

Computer
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

Unsigned int

Correct Answered :

Wrong Answered :

34. Snapshot of the data in the database at a given instant of time is called.

A

Database Schema

B

Database Instance

C

Database Snapshot

D

All of the above

Computer
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

Database Instance

Correct Answered :

Wrong Answered :

35. Which of the following data constraints would be used to specify that the value of cells in a column must be one of specific set of possible values?

A

A domain constraint

B

A range constraint

C

An intra relation constraint

D

An inter relation constraint

Computer
KUET MCA 2022
REPORT
**Correct Answer : A**

**Explanation : **

A domain constraint

Correct Answered :

Wrong Answered :

36. In Context of database, Let T1 and T2 be two concurrent transactions. Consider the following sequence of operations on data X :

T1 : R(X) T1 : W(X) T2 : R(X) T2 : W(X)

This is called ______Problem

A

Dirty Read

B

Lost update

C

Incorrect summary

D

Unrepeatable Read

Computer
KUET MCA 2022
REPORT
**Correct Answer : A**

**Explanation : **

Dirty Read

Correct Answered :

Wrong Answered :

37. Which of the following occurs when one transaction reads a changed record that has not been committed to the database?

A

Non repeatable read

B

Phantom read

C

Dirty read

D

Consistent read

Computer
KUET MCA 2022
REPORT
**Correct Answer : C**

**Explanation : **

Dirty Read

Correct Answered :

Wrong Answered :

38. Identify the data structure which allows deletion at both ends of the list but insertion at only one end?

A

Stack

B

Priority Queue

C

Output restricted queue

D

Input restricted queue

Computer
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

Input restricted queue

Correct Answered :

Wrong Answered :

39. Which of the following is not a linear data structure?

A

Stack

B

Graph

C

List

D

None of these

Computer
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

Graph

Correct Answered :

Wrong Answered :

40. Merge sort uses which of the following technique to implement sorting?

A

Backtracking

B

Greedy Algorithm

C

Divide and Conquer

D

Dynamic Programming

Computer
KUET MCA 2022
REPORT
**Correct Answer : C**

**Explanation : **

Divide and Conquer

Correct Answered :

Wrong Answered :

41. A complete binary tree with the property that the value at each node is at least as large as the values at its children is called

A

Binary Search Tree

B

Binary Tree

C

Completely Balanced Tree

D

Heap

Computer
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

In a Max. Binary Heap, the key value at each node is as least as large
as the values at its children. Similarly in Min Binary Heap, the key at
root must be minimum among all keys present in Binary Heap.

Correct Answered :

Wrong Answered :

42. To access the services of the operating system, the interface is provided by the ____.

A

Library

B

System calls

C

Assembly instructions

D

API

Computer
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

To access services of the Operating System an interface is provided by the **System Calls**.

Correct Answered :

Wrong Answered :

43. In a multi threaded environment ____.

A

Each thread is allocated with new memory from main memory

B

Main thread terminates after the termination of child threads

C

Every process can have only one thread

D

None of the above

com
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

Main thread terminates after the termination of child threads

Correct Answered :

Wrong Answered :

44. Switching the CPU to another Process requires to save state of the old process and loading new process state is called as ____.

A

Process Blocking

B

Context Switch

C

Time Sharing

D

None of above

Computer
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

Context Switch

Correct Answered :

Wrong Answered :

45. The operating system and the other processes are protected from being modified by an already running process because ____.

A

They are in different memory spaces.

B

They are in different logical addresses

C

They have a protection algorithm

D

Every address generated by the CPU is being checked against the relocation and limit registers.

Computer
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

Every address generated by the CPU is being checked against the relocation and limit registers.

Correct Answered :

Wrong Answered :

46. What is the worst case time complexity of a quick sort algorithm?

A

O(n)

B

O(nlogn)

C

O(n^{2})

D

O(logn)

Computer
KUET MCA 2022
REPORT
**Correct Answer : C**

**Explanation : **

*O(n ^{2}*)

Correct Answered :

Wrong Answered :

47. The following paradigm can be used to find the solution of the problem in the minimum time:

Given a set of non negative integers, and a value K, determine if there is a subset of the given set with sum equal to K?

A

Divide and Conquer

B

Dynamic Programming

C

Greedy Algorithm

D

Brand and Bound

Computer
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

“Subset sum
problem”: Given a set of non-negative integers, and a value sum,
determine if there is a subset of the given set with sum equal to given
sum(K). **Dynamic Programming paradigm** can be used to find the solution of the problem in minimum time.

Correct Answered :

Wrong Answered :

48. Which of the following is useful in traversing a given graph by breadth first search?

A

Set

B

List

C

Stack

D

Queue

com
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

BFS performs level-order traversal which can be fairly done using a queue.

Correct Answered :

Wrong Answered :

49. Best case time complexity of binary search algorithm is

A

O(N)

B

O(LOGN)

C

O(NLOGN)

D

O(N^{2})

Computer
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

The time complexity of the binary search algorithm is O(log n). The best-case time complexity would be **O(1)**
when the central index would directly match the desired value. Binary
search worst case differs from that. The worst-case scenario could be
the values at either extremity of the list or values not in the list.

Correct Answered :

Wrong Answered :

50. According to Chomsky classification, language of finite automata is :

A

Type 0

B

Type 1

C

Type 2

D

Type 3

Computer
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

Type 3 grammars are
generated by regular languages. These languages are exactly all those
languages that can be accepted by finite state automata. Type 3 is the
most restricted grammar.

Correct Answered :

Wrong Answered :

51. How many DFA`s exits with two states over input alphabet {0, 1}

A

16

B

26

C

32

D

64

Computer
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

Number of DFA’s = 2^{n} * n^{(2*n)}.

Correct Answered :

Wrong Answered :

52. Which of the following statement is false?

A

Context free language is the subset of context sensitive language

B

Regular language is the subset of context sensitive language

C

Recursively enumerable language is the super set of regular language

D

Context sensitive language is a subset of context free language

Computer
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

Context sensitive language is a subset of context free language

Correct Answered :

Wrong Answered :

53. Which of the following can accept even palindrome over {a,b}

A

Push down Automata

B

Turing machine

C

NDFA

D

All of the mentioned

Computer
KUET MCA 2022
REPORT
**Correct Answer : C**

**Explanation : **

NDFA

Correct Answered :

Wrong Answered :

54. The required resources for communication between end systems are reserved for the duration of the session between end systems in _____ method.

A

Packet switching

B

Circuit switching

C

Line switching

D

Frequency switching

Computer
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

In **circuit-switched networks**,
the resources needed along a path (buffers, link bandwidth) to provide
for communication between the end systems are reserved for the duration
of the session.

Correct Answered :

Wrong Answered :

55. The device bridge is used at ____ layer of OSI reference model.

A

Datalink

B

Network

C

Transport

D

Application

Computer
KUET MCA 2022
REPORT
**Correct Answer : A**

**Explanation : **

Bridge works at Data link layer.

Correct Answered :

Wrong Answered :

56. In ____, the chances of collision can be reduced if a station senses the medium before trying to use it.

A

MA

B

CSMA

C

FDMA

D

CDMA

Computer
KUET MCA 2022
REPORT
**Correct Answer : B**

**Explanation : **

CSMA

Correct Answered :

Wrong Answered :

57. Which of the following is not a function of network layer?

A

routing

B

inter networking

C

congestion control

D

error control

Computer
KUET MCA 2022
REPORT
**Correct Answer : D**

**Explanation : **

in the osi model, network layer is the third layer and it provides data
routing paths for network communications. error control is a function of
the data link layer and the transport layer.

Correct Answered :

Wrong Answered :

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