1) What is the full form of CIA under information security?
Correct Answer: Confidentiality Integrity Availability
Explanation:

Confidentiality, integrity and availability, also known as the CIA triad, is a model designed to guide policies for information security within an organization. The model is also sometimes referred to as the AIC triad (availability, integrity and confidentiality) to avoid confusion with the Central Intelligence Agency. The elements of the triad are considered the three most crucial components of security.

2) What is called periodic assessment of security vulnerability in computer system?
Correct Answer: Security audit
Explanation:

An information security audit is an audit on the level of information security in an organization. Within the broad scope of auditing information security there are multiple types of audits, multiple objectives for different audits, etc.

3) What is called a single point of access for several networking services?
Correct Answer: Directory service
Explanation:

A directory service is a customizable information store that functions as a single point from which users can locate resources and services distributed throughout the network. This customizable information store also gives administrators a single point for managing its objects and their attributes.

4) Which activities endanger the sovereignty and integrity of nation?
Correct Answer: Cyber Terrorism
Explanation:

Cyberterrorism is the convergence of cyberspace and terrorism. It refers to unlawful attacks and threats of attacks against computers, networks and the information stored therein when done to intimidate or coerce a government or its people in furtherance of political or social objectives.

5) Which crime involves the use of computer networks to create, distribute or access materials that sexually exploit underage persons?
Correct Answer: Child pornography
Explanation:

Child pornography involves the use of computer networks to create, distribute or access materials that sexually exploit underage persons