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Computer Science MCQs

PDF
Computer Science and Information Technology (IT) Multiple Choice
Questions and Answers in PDF for Test Preparation.

Q. The file type #include is called


(A) syntax
(B) operator
(C) header file
(D) string constant

The answer is: (C) header file

Q. Consider the main body of a C++ program,


string var1 = “Computer “;
string var2 = “Science”;
string var3 = var1 + var2;
cout << “var3” << endl;
If the program is run, what will be displayed on the screen?
(A) var3
(B) Computer
(C) Science
(D) Computer Science

The answer is: (A) var3

Q. Consider the main body of a C++ program,


string var1 = “Computer “;
string var2 = “Science”;
string var3 = var1 + var2;
cout << var3 << endl;
If the program is run, what will be displayed on the screen?
(A) var3
(B) Computer
(C) Science
(D) Computer Science

The answer is: (D) Computer Science

Q. conio.h stands for


(A) character input output
(B) console input output
(C) common input output
(D) complex input output

The answer is: (B) console input output

Q. Which component of a computer system manages the flow of data and


interaction between the components of the processor?
(A) Accumulator
(B) Control unit
(C) Register
(D) Bus

Answer: (B) Control unit

Q. An important property of fiber optic is


(A) refraction
(B) reflection
(C) interface
(D) none of these

Answer: (A) refraction

Q. The process to convert analog signals into digital signals is called


(A) modulation
(B) demodulation
(C) digitization
(D) conversion

Answer: (B) demodulation


Q. FTP is an abbreviation for
(A) File Transfer Position
(B) File Transfer Protection
(C) File Transfer Protocol
(D) File Transfer Possibility

Answer: (C) File Transfer Protocol

Q. The network in which we connect each node to the network along a single
piece of network cable is known as
(A) Bus Network Topology
(B) Star Network Topology
(C) Ring Network Topology
(D) None of these

Answer: (A) Bus Network Topology

Q. The network in which we connect each network node to a central device


(hub) is known as
(A) Bus Network Topology
(B) Star Network Topology
(C) Ring Network Topology
(D) None of these

Answer: (B) Star Network Topology

Q. IP is implemented at which OSI Model layer?


(A) Transport
(B) Network
(C) Datalink
(D) presentation

Answer: (B) Network

Q. Converting a digital signal into an analog signal is called


(A) modulation
(B) demodulation
(C) conversion
(D) none of these

Answer: (A) modulation

Q. An important property of fiber optic is


(A) refraction
(B) reflection
(C) interface
(D) none of these

Answer: (A) refraction

Q. In C++, the library function exit() causes an exit from the


(A) statement
(B) loop in which it occurs
(C) function in which it occurs
(D) program in which it occurs

The answer is: (D) program in which it occurs

Q. NTFS stands for?


(A) New Trend File Saving
(B) Network File Saving
(C) New Technology File System
(D) None Of These

The answer is: (C) New Technology File System

Q. Which variable type can have only two possible values?


(A) integer
(B) string
(C) double
(D) bool

The answer is: (D) bool


Q. IP is implemented at which OSI Model layer?
(A) Transport
(B) Network
(C) Datalink
(D) Presentation

Answer: (B) Network

Q. Internet uses _______ to communicate between devices and networks.


(A) HTTPS
(B) email
(C) website
(D) internet protocol suite

The answer is: (D) internet protocol suite

Q. In C++, a pointer is
(A) address of a variable
(B) variable for storing addresses
(C) data type of an address variable
(D) constant value

The answer is: (B) variable for storing addresses

FIND FULL LIST OF COMPUTER SCIENCE MCQS AT


https://cssmpt.com/css/computer-science-mcqs/

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