Network Security: Master the Essentials for Advanced Diploma in IT

Question 1

What is the primary purpose of a network access control (NAC) system?

Accepted Answer

To control access to a network based on user and device attributes

Answer

To provide real-time protection against network attacks

Answer

To monitor and manage network traffic

Answer

To encrypt data before it is transmitted over a network

Question 2

What is the primary objective of a vulnerability assessment?

Accepted Answer

To identify potential weaknesses and vulnerabilities in a network or system

Answer

To exploit vulnerabilities in a network or system

Answer

To prevent vulnerabilities from being exploited

Answer

To monitor network traffic for suspicious activity

Question 3

What is the main goal of a network security incident response plan?

Accepted Answer

To effectively respond to network security incidents in a timely manner

Answer

To prevent network security incidents from happening

Answer

To investigate network security incidents after they occur

Answer

To recover from network security incidents

Question 4

In cloud computing, which aspect requires special attention due to shared resources and the risk of data leakage between users?

Accepted Answer

Data isolation

Answer

Network security

Answer

Physical security

Answer

Threat detection

Question 5

Which of the following is NOT a common type of network security threat?

Accepted Answer

Software updates

Answer

Malware

Answer

Denial-of-service attacks

Answer

Phishing

Question 6

What is the primary function of a firewall in a network security system?

Accepted Answer

To detect and block unauthorized access to the network

Answer

To monitor network traffic and alert administrators to suspicious activity

Answer

To encrypt data transmitted over the network

Answer

To provide a backup connection in case of network failure

Question 7

Which of the following encryption algorithms is considered to be one of the most secure?

Accepted Answer

AES

Answer

DES

Answer

RSA

Answer

MD5

Question 8

What is the purpose of an intrusion detection system (IDS)?

Accepted Answer

To detect and alert administrators to suspicious network activity

Answer

To prevent unauthorized access to a network

Answer

To encrypt data transmitted over the network

Answer

To provide a backup connection in case of network failure

Question 9

What is the purpose of a network security policy?

Accepted Answer

To define the rules and procedures for protecting the network and its data

Answer

To provide a step-by-step guide for responding to network security incidents

Answer

To document the technical specifications of the network security system

Answer

To provide training materials for network security personnel

Question 10

Which network security technology uses machine learning to proactively identify and respond to threats?

Accepted Answer

Extended Detection and Response (XDR)

Answer

Network Access Control (NAC)

Answer

Zero Trust Network Access (ZTNA)

Question 11

Which of the following is **NOT** a potential consequence of a successful network security breach?

Accepted Answer

Increased network security measures implemented to prevent or mitigate future breaches

Answer

Data loss due to unauthorized access and theft of sensitive information

Answer

Financial loss resulting from stolen financial data, fraudulent transactions, or business disruptions

Answer

Damage to an organization's reputation, leading to loss of customer trust and business

Question 12

What is the primary function of a firewall?

Accepted Answer

To prevent unauthorized access to a network

Answer

To detect and respond to malicious activity

Answer

To encrypt data transmitted over a network

Answer

To provide a secure communication channel between two networks

Question 13

Which encryption algorithm is commonly used to secure data in transit?

Accepted Answer

AES

Answer

DES

Answer

3DES

Answer

RSA

Question 14

What is the purpose of an intrusion detection system (IDS)?

Accepted Answer

To monitor network traffic for suspicious activity

Answer

To prevent unauthorized access to a network

Answer

To respond to security incidents

Answer

To encrypt data transmitted over a network

Question 15

What is the difference between symmetric and asymmetric encryption?

Accepted Answer

Symmetric encryption uses the same key for encryption and decryption, while asymmetric encryption uses different keys.

Answer

Symmetric encryption uses different keys for encryption and decryption, while asymmetric encryption uses the same key.

Answer

Symmetric encryption is faster than asymmetric encryption.

Answer

Asymmetric encryption is more secure than symmetric encryption.

Question 16

What is the term for a malicious software that encrypts files and demands a ransom to decrypt them?

Accepted Answer

Ransomware

Answer

Virus

Answer

Trojan

Answer

Spyware

Question 17

Which fundamental principle of secure network design utilizes multiple layers of defense to strengthen protection against threats?

Accepted Answer

Defense in Depth

Answer

Encryption

Answer

Zero Trust

Question 18

What's the main purpose of continuous network security monitoring?

Accepted Answer

To detect and respond to security incidents quickly

Answer

To ensure the network runs smoothly and is always available

Answer

To follow industry rules and standards

Answer

To use bandwidth in the best way possible

Question 19

Which of the following is NOT a common type of network security threat?

Accepted Answer

Power failure

Answer

Denial-of-Service (DoS) attack

Answer

Malware

Answer

Phishing

Question 20

What is the primary function of a firewall?

Accepted Answer

To regulate incoming and outgoing network traffic based on defined rules

Answer

To monitor network traffic for suspicious activity

Answer

To detect and prevent intrusion attempts

Answer

To encrypt data transmitted over the network

Question 21

Which type of encryption technique uses a single key to both encrypt and decrypt data?

Accepted Answer

Symmetric encryption

Answer

Asymmetric encryption

Answer

Digital signature

Answer

Hashing

Question 22

Which of the following is a key component in an intrusion detection system (IDS)?

Accepted Answer

Sensors

Answer

Virtual Private Network (VPN)

Answer

Firewall

Answer

Encryption algorithm

Question 23

Which of the following is a best practice for maintaining network security?

Accepted Answer

Regularly applying software updates and security patches

Answer

Opening email attachments from unknown senders

Answer

Using default passwords without modification

Answer

Disabling antivirus and anti-malware software

Question 24

Which type of authentication factor involves possession of a physical device?

Accepted Answer

Token

Answer

Knowledge-based

Answer

Password

Answer

Biometric

Question 25

What is a primary advantage of using a virtual private network (VPN)?

Accepted Answer

Increased data privacy and security

Answer

Increased risk of malware infections

Answer

Reduced network performance

Answer

Restriction of access to local network resources

Question 26

Which of the following is a crucial factor to consider when designing a network security architecture?

Accepted Answer

Identification and mitigation of potential risks and threats

Answer

Exclusive use of the most advanced and expensive technologies

Answer

Sole focus on preventing external attacks