List of top Computer Science & Information Technology Questions

What is the purpose of the subnet mask in IP addressing?
Which algorithm is used for finding the shortest path in a weighted graph with negative edges?
What is the role of the page table in an operating system?
What is a primary key in a relational database?
What is the time complexity of inserting an element into a balanced binary search tree?
Which of the following correctly describes the TCP/IP model?
What is normalization in database design?
What is the time complexity of merge sort in the worst case?
Which of the following are necessary conditions for a deadlock?
Which of the following correctly describes a binary search tree (BST)?
Which of the following is a device used to connect multiple networks and operate at the network layer of the OSI model?
Which of the following is not a type of process scheduling in operating systems?
Which data structure is used in the implementation of recursion?
Let \( A = \{1, 2, 3\} \). Which of the following is the number of distinct relations on \( A \)?
Let \(A, B\) be two events and \(\overline{A}\) be the complement of \(A\). If \(P(A) = 0.7\), \(P(B) = 0.7\) and \(P(B \mid A) = 0.5\), then \(P(A \cup B) = \_\_\_.\)

A Session variable is created ________.
 

Which is the correct syntax to link XML file with CSS?
What is the correct HTML for adding a background color?
What is the correct HTML for making a hyperlink?

Cascading Style Sheets define style and appearance using ________.
 

A web client sends a request to a web server. The web server transmits a program to that client and is executed at client which creates a web document. Such web documents are ________.
 

The CSS used inside HTML elements alongside style attribute is called ________.
 

In XML, DOCTYPE declaration specifies to include a reference to ________ file.
 

Digital signatures provide ________.
 

A switch differs from a hub because, it ________.