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
Correct Answer :
C. To optimize data retrieval by providing fast access to specific records
Related Questions
What does GUI stand for in the context of computer software?
Graphic User Interface
General User Instruction
Graphical Unit Integration
Global User Interface
Which of the following is not a valid programming construct in Python?
for loop
if statement
switch statement
while loop
What is the purpose of the return statement in a function in most programming languages?
To exit the program
To print a message to the console
To stop a loop
To return a value from a function
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)
What is a DNS server responsible for in the context of the internet?
Storing email messages
Translating domain names into IP addresses
Managing network hardware
Providing web hosting services
Which programming language is often used for web development?
Python
Java
HTML
C++
In object-oriented programming, what is encapsulation?
The process of converting code into an executable program
The process of hiding the implementation details of an object
The process of compiling code
The process of optimizing code for performance
What does the acronym HTML stand for?
HyperText Markup Language
High-Level Text Language
Hyperlink Text Management Language
Home Tool Markup Language
What is the purpose of the for loop in programming?
To execute a block of code a specific number of times
To make decisions and execute code conditionally
To define a function
To create graphics
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
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 the purpose of the break statement in programming?
To create a loop
To exit a loop prematurely
To define a function
To print output to the console
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 data type is used to store whole numbers in Python?
float
int
str
bool
What is the purpose of a compiler in programming?
To execute code line by line
To translate high-level code into machine code
To debug code
To create user interfaces
In binary, what is the result of the bitwise OR operation (|) between 1010 and 1100?
1000
1110
0110
1010
Which sorting algorithm has the worst-case time complexity of O(n^2)?
QuickSort
MergeSort
BubbleSort
InsertionSort
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
Which of the following is not a valid relational operator in programming?
>
<=
==
%
Which of the following is an example of a network protocol?
JPEG
HTTP
MP3
PNG
Which programming language is often used for data analysis and machine learning?
Java
Ruby
Python
C#
What does CPU stand for?
Central Processing Unit
Computer Programming Unit
Central Program Unit
Computer Processing Unit
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 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 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
Which of the following is not a valid programming construct in Python?
if-else statement
switch statement
while loop
for loop
In object-oriented programming, what is an instance of a class?
A variable
A function
An object created based on the class
A class variable
Which of the following is a valid way to define a variable in Python?
variableName = 42
variableName := 42
42 = variableName
variableName -> 42
Which of the following is a valid way to comment out code in Python?
/* This is a comment */
// This is a comment
# This is a comment
Which of the following is not a primary color in the RGB color model?
Red
Green
Blue
Yellow