Topic 1.4 - Network Security

Question 1

What is network security?

Answer 1

Network security refers to the measures and practices taken to protect computer networks and their data from unauthorized access and threats.

Question 2

What is a threat in network security?

Answer 2

A threat is a potential danger or risk to the security of a network, which could result in harm or loss.

Question 3

What is a vulnerability?

Answer 3

A vulnerability is a weakness or gap in a network’s defenses that can be exploited by threats to compromise security.

Question 4

What is an attack in network security?

Answer 4

An attack is an intentional, harmful action against a network, aimed at exploiting vulnerabilities or causing damage.

Question 5

What is a security breach?

Answer 5

A security breach is an unauthorized access or exposure of sensitive data within a network.

Question 6

What is encryption in network security?

Answer 6

Encryption is the process of encoding data to make it unreadable to unauthorized users, providing confidentiality.

Question 7

What is authentication?

Answer 7

Authentication is the process of verifying the identity of users or devices before granting access to the network.

Question 8

What is authorisation?

Answer 8

Authorisation is the process of determining what actions or resources a user or device is allowed to access within the network.

Question 9

What is intrusion detection and prevention?

Answer 9

Intrusion detection and prevention systems (IDPS) monitor network traffic for suspicious activity and can take actions to prevent or mitigate threats.

Question 10

What is antivirus software?

Answer 10

Antivirus software is designed to detect and remove malware, such as viruses, worms, and Trojans, from a network.

Question 11

What is a malware?

Answer 11

Malware is malicious software that includes viruses, worms, Trojans, and other harmful programs designed to disrupt or damage a network.

Question 12

What is a DDoS attack?

Answer 12

A Distributed Denial of Service (DDoS) attack floods a network or server with traffic to overwhelm and disrupt services.

Question 13

What is a phishing attack?

Answer 13

A phishing attack uses fraudulent emails or websites to trick users into revealing sensitive information, such as login credentials.

Question 14

What is a man-in-the-middle attack?

Answer 14

A man-in-the-middle attack intercepts and potentially alters communications between two parties without their knowledge.

Question 15

What is ransomware?

Answer 15

Ransomware is a type of malware that encrypts a network’s data and demands a ransom for the decryption key.

Question 16

What is SSL/TLS?

Answer 16

SSL (Secure Sockets Layer) and TLS (Transport Layer Security) are protocols that provide secure data transmission over the internet, often used for securing websites.

Question 17

What is IPsec?

Answer 17

IPsec (Internet Protocol Security) is a suite of protocols used to secure communication at the network layer, often used in VPNs.

Question 18

What is SSH (Secure Shell)?

Answer 18

SSH is a secure network protocol that allows for secure remote access and file transfer over an encrypted connection.

Question 19

What is WPA2/WPA3?

Answer 19

WPA2 (Wi-Fi Protected Access 2) and WPA3 are security protocols used to secure wireless networks, with WPA3 being the more recent and secure version.

Question 20

What is the principle of least privilege?

Answer 20

The principle of least privilege advocates granting users or devices the minimum level of access necessary to perform their tasks, reducing potential security risks.

Question 21

What is a security policy?

Answer 21

A security policy is a set of guidelines and rules that define how network security is managed and maintained within an organization.

Question 22

What is a security audit?

Answer 22

A security audit is an evaluation of a network’s security measures to identify vulnerabilities and ensure compliance with security policies.

Question 23

What is patch management?

Answer 23

Patch management involves applying updates and patches to network software and hardware to address known vulnerabilities and improve security.

Question 24

What is IoT security?

Answer 24

IoT security focuses on securing internet-connected devices, such as smart appliances and sensors, which may have security vulnerabilities.

Question 25

What is cloud security?

Answer 25

Cloud security involves securing data and applications stored in cloud services and ensuring their protection from cyber threats.

Question 26

What is AI and machine learning in network security?

Answer 26

AI and machine learning are used in network security to detect and respond to threats by analyzing large volumes of data and identifying patterns.

Question 27

What is zero-day vulnerability?

Answer 27

A zero-day vulnerability is a security flaw that is exploited by attackers before a patch or fix is available, posing a significant threat.

Question 28

What is a security incident response plan?

Answer 28

A security incident response plan outlines the actions to be taken in the event of a security breach, helping to minimize damage and recover quickly.