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What is the correct answer?

4

What is the binary representation of the decimal number 42?

A. 00101010

B. 10101010

C. 11010010

D. 01010101

Correct Answer :

A. 00101010


Related Questions

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4

What is the purpose of the do-while loop in programming?

A. To execute a block of code a specific number of times

B. To create graphics

C. To make decisions and execute code conditionally

D. To repeat a block of code while a condition is true, with the condition checked after the loop body

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4

What is the purpose of the elif statement in Python?

A. It is used to define a new variable.

B. It is used to handle exceptions.

C. It is used to execute code if the if condition is false.

D. It is used to test multiple conditions sequentially.

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4

In object-oriented programming, what is a class?

A. A type of data structure

B. A step-by-step procedure

C. A blueprint for creating objects

D. A loop

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4

What is the purpose of an index in a database?

A. To sort data alphabetically

B. To store backup copies of data

C. To optimize data retrieval by providing fast access to specific records

D. To encrypt data

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4

Which of the following is not a valid programming construct in Python?

A. if-else statement

B. switch statement

C. while loop

D. for loop

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4

What is the purpose of the break statement in programming?

A. To create a loop

B. To exit a loop prematurely

C. To define a function

D. To print output to the console

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4

Which of the following is not a primary color in the RGB color model?

A. Red

B. Green

C. Blue

D. Yellow

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4

What is the purpose of an operating system's file system?

A. To organize and manage files and directories on storage devices

B. To connect to the internet

C. To display graphics on the screen

D. To execute programs

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4

What does CPU stand for?

A. Central Processing Unit

B. Computer Programming Unit

C. Central Program Unit

D. Computer Processing Unit

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4

What is the purpose of a database index?

A. To prevent data corruption

B. To optimize data retrieval by providing fast access to specific records

C. To store large amounts of data

D. To encrypt data

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4

Which data structure uses a Last-In-First-Out (LIFO) order?

A. Queue

B. Stack

C. Linked List

D. Tree

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4

What is a pointer in the C programming language?

A. A data type used to store text

B. A variable that stores multiple values

C. A variable that stores the memory address of another variable

D. A type of loop

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4

Which of the following is not a valid programming construct in Python?

A. for loop

B. if statement

C. switch statement

D. while loop

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4

What does IP stand for in the context of computer networking?

A. Internet Protocol

B. Internal Processor

C. Information Provider

D. Internet Program

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4

Which of the following is not a valid relational operator in programming?

A. >

B. <=

C. ==

D. %

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4

What is a network firewall used for?

A. To protect against physical intrusions

B. To block unwanted network traffic and protect a network from unauthorized access

C. To boost network speed

D. To filter spam emails

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4

What is the binary representation of the decimal number 42?

A. 00101010

B. 10101010

C. 11010010

D. 01010101

What is the correct answer?

4

Which of the following is an example of a network protocol?

A. JPEG

B. HTTP

C. MP3

D. PNG

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4

What is an IP address used for in computer networking?

A. To identify a specific website

B. To identify a specific computer or device on a network

C. To encrypt network traffic

D. To block spam emails

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4

In object-oriented programming, what is encapsulation?

A. The process of converting code into an executable program

B. The process of hiding the implementation details of an object

C. The process of compiling code

D. The process of optimizing code for performance

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4

What does the term protocol mean in the context of computer networking?

A. A set of rules and conventions for communication between devices

B. A type of hardware

C. A programming language

D. A software application

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4

In the context of cybersecurity, what does the term phishing refer to?

A. Catching harmful computer viruses

B. Fishing for personal information through deceptive emails or websites

C. Encrypting data for security

D. Scanning for network vulnerabilities

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4

What does the term HTTP request refer to in web development?

A. A request for information sent from a web server to a web client

B. A request for information sent from a web client to a web server

C. A request to download a web page

D. A request to play a video on a web page

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4

What is a primary key in a database table?

A. A key used to unlock the database

B. A key used for encryption

C. A unique identifier for each record in the table

D. A key used for sorting records

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4

What is the purpose of an if-else statement in programming?

A. To create a loop

B. To define a function

C. To make decisions and execute code conditionally

D. To print output to the console

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4

Which data structure is used to store a collection of elements with no duplicates?

A. Array

B. Set

C. List

D. Dictionary

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4

What is the purpose of a subroutine in programming?

A. To define a data type

B. To create graphics

C. To store data

D. To encapsulate a sequence of code that can be called multiple times

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4

Which data type is used to store whole numbers in Python?

A. float

B. int

C. str

D. bool

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4

What does the acronym SQL stand for?

A. Structured Query Language

B. Simple Query Language

C. System Query Language

D. Sequential Query Language

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4

Which of the following is not a valid type of computer network?

A. Local Area Network (LAN)

B. Wide Area Network (WAN)

C. Personal Area Network (PAN)

D. Personal Computer Network (PCN)