What is a network firewall used for?
To protect against physical intrusions
To block unwanted network traffic and protect a network from unauthorized access
To boost network speed
To filter spam emails
Correct Answer :
B. To block unwanted network traffic and protect a network from unauthorized access
Related Questions
What does the term bug refer to in programming?
An insect that disrupts the computer's operation
A hardware malfunction
An error or flaw in a program's code
A security vulnerability
What is the purpose of an index in a database?
To sort data alphabetically
To store backup copies of data
To optimize data retrieval by providing fast access to specific records
To encrypt data
What is the purpose of a function in programming?
To store data
To perform a specific task or calculation
To display information on the screen
To create graphics
What is the purpose of the switch statement in programming?
To execute code based on multiple conditions
To define a function
To create graphics
To exit a loop
What is the purpose of an array in programming?
To store a single value
To store a collection of values of the same data type
To perform mathematical calculations
To create graphics
What is a loop in programming?
A bug in the code
A function that repeats a specific task
A variable that stores multiple values
A conditional statement
What is the purpose of the try and except blocks in Python?
To define a function
To create graphics
To handle exceptions and errors
To write comments in code
What does the term algorithmic complexity refer to?
The speed at which a program executes
The size of a program's source code
The number of bugs in a program
The amount of memory used by a program
What is the purpose of the continue statement in programming?
To exit a loop prematurely
To define a function
To print output to the console
To create a loop
What is a data structure in programming?
A type of loop
A category of values with a common set of operations
A programming language
A set of rules for writing code
Which of the following is not a valid type of computer network?
Local Area Network (LAN)
Wide Area Network (WAN)
Personal Area Network (PAN)
Personal Computer Network (PCN)
Which sorting algorithm has the worst-case time complexity of O(n^2)?
QuickSort
MergeSort
BubbleSort
InsertionSort
What is the purpose of the do-while loop in programming?
To execute a block of code a specific number of times
To create graphics
To make decisions and execute code conditionally
To repeat a block of code while a condition is true, with the condition checked after the loop body
What is the purpose of the while loop in programming?
To execute a block of code a specific number of times
To define a function
To make decisions and execute code conditionally
To repeat a block of code while a condition is true
Which programming language is often used for web development?
Python
Java
HTML
C++
What is the purpose of a database management system (DBMS)?
To display web pages
To protect against viruses
To store, retrieve, and manage data in a database
To create graphics
Which data structure uses a First-In-First-Out (FIFO) order?
Stack
Queue
Linked List
Binary Tree
What does the term protocol mean in the context of computer networking?
A set of rules and conventions for communication between devices
A type of hardware
A programming language
A software application
What does the term ASCII stand for in the context of character encoding?
American Standard Code for Information Interchange
Advanced Standard Character Set Instruction
Automated System for Computer Information
Algorithmic Symbol Coding and Interpretation
What is the purpose of the finally block in a try-except-finally construct in Python?
To define a function
To execute code regardless of whether an exception occurred
To create graphics
To repeat a block of code
What does CPU stand for?
Central Processing Unit
Computer Programming Unit
Central Program Unit
Computer Processing Unit
What is the purpose of the elif statement in Python?
It is used to define a new variable.
It is used to handle exceptions.
It is used to execute code if the if condition is false.
It is used to test multiple conditions sequentially.
What is the purpose of the else statement in programming?
To define a new variable
To handle exceptions
To execute code if the if condition is true
To execute code if the if condition is false
Which of the following is not a primary color in the RGB color model?
Red
Green
Blue
Yellow
What is the purpose of an if-else statement in programming?
To create a loop
To define a function
To make decisions and execute code conditionally
To print output to the console
What does the term HTTP request refer to in web development?
A request for information sent from a web server to a web client
A request for information sent from a web client to a web server
A request to download a web page
A request to play a video on a web page
What is a data type in programming?
A programming language
A set of rules for writing code
A category of values with a common set of operations
A loop
What is the binary representation of the decimal number 8?
1000
1001
100
1010
Which of the following is not a valid relational operator in programming?
>
<=
==
%
What is the purpose of a database index?
To prevent data corruption
To optimize data retrieval by providing fast access to specific records
To store large amounts of data
To encrypt data