Q.
Which data structure follows the First-In-First-Out (FIFO) principle?
Linked List
Stack
Queue
Array
Explanation:
A queue is a linear data structure that follows the FIFO principle, where the element inserted first is the one to be removed first. A stack, on the other hand, follows LIFO (Last-In-First-Out).
Q.
What is the primary purpose of an operating system?
To connect to the internet
To compile source code into machine code
To provide a graphical user interface
To manage hardware and software resources
Explanation:
An operating system manages computer hardware and software resources and provides common services for computer programs. It acts as an intermediary between the user and the hardware.
Q.
Which protocol is used for secure communication over a computer network?
SMTP
FTP
HTTPS
HTTP
Explanation:
HTTPS (Hypertext Transfer Protocol Secure) is an extension of HTTP and uses TLS/SSL to encrypt communication between a client and a server, ensuring data privacy and integrity.
Q.
What does SQL stand for?
Structured Query Language
Standard Query Language
Simple Query Language
Sequential Query Language
Explanation:
SQL stands for Structured Query Language. It is the standard language for relational database management systems and is used for querying, inserting, updating, and deleting data.