Showing 21–30 of 50 questions
What does 'ubiquitous' mean?
A
Extremely rare
B
Present everywhere
C
Very expensive
D
Complicated
Correct Answer:
B. Present everywhere
Explanation:
'Ubiquitous' means being or appearing everywhere at the same time; omnipresent
Which sentence is grammatically correct?
A
Each of the students have completed their assignments.
B
Each of the students has completed their assignment.
C
Each of the students have completed his or her assignments.
D
All of the students has completed their assignments.
Correct Answer:
B. Each of the students has completed their assignment.
Explanation:
'Each' is singular, so 'has' is correct. 'Their assignment' (singular) matches with 'each'
Find the synonym of 'EPHEMERAL':
A
Permanent
B
Transient
C
Durable
D
Eternal
Correct Answer:
B. Transient
Explanation:
'Ephemeral' means lasting for a very short time. 'Transient' is the closest synonym
Choose the antonym of 'VERBOSE':
A
Talkative
B
Quiet
C
Concise
D
Silent
Correct Answer:
C. Concise
Explanation:
'Verbose' means using or containing more words than necessary. 'Concise' is the opposite
Read the passage: 'Technology has revolutionized education. Students now have access to online courses from top universities.' What is the main idea?
A
Online courses are free
B
Technology has changed how education is delivered
C
Top universities offer better education
D
All students prefer online learning
Correct Answer:
B. Technology has changed how education is delivered
Explanation:
The passage states that technology has revolutionized education and enabled access to courses. This is the main idea
Which of the following best describes SQL?
A
A programming language for web development
B
A language for managing and querying databases
C
A markup language for creating web pages
D
A platform for cloud computing
Correct Answer:
B. A language for managing and querying databases
Explanation:
SQL (Structured Query Language) is used for managing and querying relational databases
In Java, what does 'final' keyword do when applied to a variable?
A
It makes the variable private
B
It prevents the variable from being modified
C
It makes the variable static
D
It initializes the variable to zero
Correct Answer:
B. It prevents the variable from being modified
Explanation:
'final' keyword makes a variable immutable - once assigned, it cannot be changed
What is the output of: print(10 // 3) in Python?
Explanation:
The '//' operator performs floor division, which returns 3 (the integer part of 10/3)
Which data structure uses LIFO (Last-In-First-Out)?
A
Queue
B
Stack
C
Array
D
Linked List
Explanation:
A Stack uses LIFO principle where the last element added is the first one to be removed
What is the purpose of an index in a database?
A
To store backup data
B
To speed up query retrieval
C
To encrypt sensitive data
D
To remove duplicate records
Correct Answer:
B. To speed up query retrieval
Explanation:
An index is a database structure that improves the speed of data retrieval by creating a quick lookup mechanism
