Understanding the CIA Triad in IT Security

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Questions and Answers

What does the 'I' stand for in the CIA Triad?

Information

Indexing

Intelligence

Integrity (correct)

Which of the following is a method used to ensure confidentiality?

Encryption (correct)

Data compression

Public accessibility

Data replication

What is the primary focus of availability in the CIA Triad?

Ensuring data integrity during transmission

Ensuring data remains confidential

Keeping systems operational at all times (correct)

Preventing unauthorized access to systems

Why is the CIA Triad sometimes referred to as the AIC Triad?

To differentiate it from the Central Intelligence Agency Signup and view all the answers

Which aspect of the CIA Triad ensures that data received is the same as the data sent?

Integrity Signup and view all the answers

What is one of the biggest challenges in maintaining IT security related to the CIA Triad?

Balancing data availability with confidentiality Signup and view all the answers

How can access controls provide confidentiality?

By setting limits on user access Signup and view all the answers

Which of the following correctly represents the components of the CIA Triad?

Confidentiality, Integrity, Availability Signup and view all the answers

What is the primary purpose of using additional authentication factors when logging into a system?

To enhance confidentiality of access Signup and view all the answers

How can data integrity be verified upon receiving data from a third party?

By hashing the received data and comparing it to the sender's hash Signup and view all the answers

What additional level of integrity can be provided when sending sensitive data?

Including a digital signature in the transmission Signup and view all the answers

Why are certificates used in data transfers between devices?

To verify the identities of devices or individuals Signup and view all the answers

What is nonrepudiation in the context of data transmission?

The proof of integrity and confirmation of data origin Signup and view all the answers

Which method mentioned is specifically used to ensure integrity of data?

Hashing the data Signup and view all the answers

What happens when the hash received does not match the hash generated upon receipt of data?

The data has likely been altered or compromised Signup and view all the answers

What primary function does hashing serve in data communication?

To verify the integrity of the transmitted data Signup and view all the answers

Study Notes

CIA Triad Overview

The CIA Triad represents fundamental concepts in IT security: Confidentiality, Integrity, and Availability.
Sometimes referred to as the AIC Triad to avoid confusion with the Central Intelligence Agency.

Confidentiality

Confidentiality ensures private information is only accessible to authorized individuals.
Encryption is a primary method for maintaining confidentiality; data is transformed into an unreadable format for security.
Access controls limit the information access based on user roles, e.g., granting marketing staff access to marketing data only.
Multi-factor authentication enhances confidentiality by requiring more than one form of verification to access accounts.

Integrity

Integrity verifies that data received is exactly as it was sent, maintaining its accuracy during transmission.
Hashing is a technique to ensure data integrity by creating a unique hash value for the original data that can be verified upon receipt.
Digital signatures provide an additional integrity layer by encrypting a hash with asymmetric encryption, confirming the sender's identity.
Certificates can identify devices or individuals, enhancing trust during data transfers.

Availability

Availability ensures that systems and information are accessible and operational when needed, even amid security measures.
Balancing availability with confidentiality remains a significant challenge in IT security.

Nonrepudiation

Nonrepudiation refers to the ability to prove that a specific action or transaction occurred, preventing parties from denying involvement or authenticity.

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Description

This quiz focuses on the CIA Triad, a fundamental concept in IT security. Learn the essential elements of Confidentiality, Integrity, and Availability, and understand their importance in protecting information. Test your knowledge of these principles and their applications in securing data.