DATA AND NETWORK SECURITY

In security the A in CIA stands for

• Authentication

• Authorization

• Availability

• Association

__________ is a malicious software designed to block access to a computer system or files until a sum of money is paid

• Adware
• Spyware
• Ransomware
• Trojan horse

Which encryption method uses a single key for both encryption and decryption, and is often used for secure email communication?

• Hashing algorithm
• Asymmetric encryption
• Symmetric encryption
• Public key infrastructure

What type of attack involves intercepting and altering communications between two parties without their knowledge?

• Phishing

• Man-in-the-middle

• Denial of Service

• SQL Injection

Which of the following is a technique used to protect sensitive data by converting it into an unreadable format?

• Encoding

• Encryption

• Compression

• Obfuscation

What does the term "phishing" refer to in the context of cybersecurity?

• Method of securing data from unauthorized access.

• Technique for improving network performance.

• Deceptive attempts to trick individuals into revealing sensitive information

• Malicious software that spreads rapidly through a network

Which of the following is an example of a passive attack?

• Network traffic analysis
• Data Modification

• Denial of service
• Data interception

DES stands for

• Data Encryption Standard
• Data Encryption System
• Data Encoding Standard
• Digital Encryption Standard

A sender is employing public key cryptography to send a secret message to a receiver. Which one of the following statements is TRUE?

• The receiver decrypts the message using their own public key.

• Receiver decrypts using sender’s public key

• The sender encrypts the message using their own private key.
• The sender encrypts the message using the receiver's public key.

Which type of attack involves flooding a network or server with excessive traffic in an attempt to make it unavailable to users?

• Denial of Service (DoS) attack
• SQL injection attack
• Man-in-the-middle attack
• Phishing attack