Which data structure follows LIFO principle?
Queue
Stack
Linked List
Tree
Which of the following is NOT an operating system?
Linux
Windows
Oracle
macOS
What is the time complexity of Binary Search?
O(n)
O(log n)
O(n²)
O(1)
Which SQL command is used to remove a table?
DELETE
REMOVE
DROP
CLEAR
Which layer of the OSI model handles routing?
Data Link
Transport
Network
Session
Which of the following is a NoSQL database?
MySQL
PostgreSQL
MongoDB
Oracle
Which sorting algorithm has the best average-case performance?
Bubble Sort
Selection Sort
Merge Sort
Insertion Sort
Which protocol is used for secure web browsing?
HTTP
FTP
HTTPS
SMTP
What is the binary equivalent of decimal 15?
1111
1010
1101
1001
Which programming paradigm does Java primarily follow?
Procedural
Functional
Object-Oriented
Logical
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