BSCS Computer Security and Cybersecurity

Question 1

Which of the following best describes the CIA triad in information security?

Accepted Answer

Confidentiality, Integrity, Availability

Answer

The CIA triad stands for Confidentiality, Integrity, and Availability — the three foundational principles guiding information security design.

Question 2

In symmetric encryption, which statement is true?

Accepted Answer

The same key is used for both encryption and decryption

Answer

Symmetric encryption uses a single shared key for both encrypting and decrypting data, unlike asymmetric encryption which uses mathematically linked key pairs.

Question 3

What type of attack involves an attacker secretly inserting themselves between two communicating parties to intercept or alter messages?

Accepted Answer

Man-in-the-Middle (MITM) attack

Answer

A Man-in-the-Middle (MITM) attack occurs when an attacker covertly intercepts and potentially modifies communications between two parties who believe they are communicating directly.

Question 4

Which hashing algorithm produces a 256-bit digest and is widely used in TLS, digital signatures, and blockchain applications?

Accepted Answer

SHA-256

Answer

SHA-256 is part of the SHA-2 family and produces a 256-bit hash, making it collision-resistant and suitable for cryptographic applications unlike the deprecated MD5 and SHA-1.

Question 5

What is a buffer overflow attack?

Accepted Answer

An attack where input data exceeds a buffer's capacity, potentially overwriting adjacent memory and hijacking execution

Answer

A buffer overflow occurs when a program writes more data to a buffer than allocated, overwriting adjacent memory and potentially redirecting execution to attacker-controlled code.

BSCS - Bachelor of Science in Computer Science Practice Test

BSCS - Bachelor of Science in Computer Science Practice Test

BSCS Computer Security and Cybersecurity