Network Security Quizzes for Advanced Diploma in Information Technology

Question 1

Which of these poses the LEAST threat to network security?

Accepted Answer

Power outage

Answer

Malware

Answer

Spam

Answer

Phishing

Question 2

Which of the following is **NOT** a type of malware?

Accepted Answer

Spam

Answer

Virus

Answer

Trojan horse

Answer

Worm

Question 3

What is the primary purpose of a firewall?

Accepted Answer

To block unauthorized access to a network

Answer

To detect and remove malware

Answer

To encrypt data

Answer

To monitor network traffic

Question 4

What is the key difference between symmetric and asymmetric encryption?

Accepted Answer

Asymmetric encryption uses different keys for encryption and decryption, while symmetric encryption uses the same key for both.

Answer

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

Answer

Symmetric encryption is more secure than asymmetric encryption.

Answer

Asymmetric encryption is more secure than symmetric encryption.

Question 5

Which of the following security protocols is used to secure web traffic?

Accepted Answer

HTTPS

Answer

HTTP

Answer

FTP

Answer

SSH

Question 6

What is the **main purpose** of using a Virtual Private Network (VPN)?

Accepted Answer

To provide secure access to a remote network

Answer

To encrypt data transmitted over a public network

Answer

To block unauthorized access to a network

Answer

To monitor network traffic

Question 7

How would you define the difference between a vulnerability and a threat?

Accepted Answer

A vulnerability is a weakness in a system that can be exploited, while a threat is an action that could exploit a vulnerability.

Answer

A threat is a weakness in a system that can be exploited, while a vulnerability is an action that could exploit a vulnerability.

Answer

Vulnerabilities and threats are essentially the same thing.

Answer

Neither of the above

Question 8

What is the **primary objective** of a security audit?

Accepted Answer

To identify and assess vulnerabilities in a network

Answer

To detect and remove malware

Answer

To monitor network traffic

Answer

To encrypt data

Question 9

Which of these is NOT considered a type of network security threat?

Accepted Answer

Hardware malfunction

Answer

Malware

Answer

Phishing

Answer

Denial of service

Question 10

Which security protocol is commonly used to secure communication over the internet?

Accepted Answer

HTTPS

Answer

SSH

Answer

FTP

Answer

Telnet

Question 11

What is the primary purpose of a firewall in network security?

Accepted Answer

To prevent unauthorized access to a network

Answer

To detect and remove malware

Answer

To encrypt data

Answer

To provide authentication services

Question 12

What is the role of intrusion detection systems (IDS) in network security?

Accepted Answer

To monitor network traffic for suspicious activities

Answer

To prevent unauthorized access to a network

Answer

To encrypt data

Answer

To provide authentication services

Question 13

What is the purpose of using a honeypot in network security?

Accepted Answer

To attract and monitor potential attackers

Answer

To prevent unauthorized access to a network

Answer

To encrypt data

Answer

To provide authentication services

Question 14

Which aspect of network security vulnerabilities refers to the underlying cause of its existence?

Accepted Answer

Root cause of a vulnerability's existence

Answer

Potential impact of exploiting a vulnerability

Answer

Remediation steps for addressing a vulnerability

Answer

Likelihood of a vulnerability being successfully exploited

Question 15

What is a potential drawback of employing password-based authentication methods?

Accepted Answer

Susceptibility to brute force attacks and phishing

Answer

Effortless implementation and utilization

Answer

Economical

Question 16

Identify the option that is NOT considered a network security threat:

Accepted Answer

Employee training

Answer

Malware

Answer

Phishing

Answer

Physical security breaches

Question 17

Which protocol is employed for encrypting and authenticating network traffic over secure channels?

Accepted Answer

HTTPS

Answer

HTTP

Answer

FTP

Answer

SMTP

Question 18

Which type of firewall filters network packets based on their source and destination IP addresses and port numbers?

Accepted Answer

Packet-filtering firewall

Answer

Stateful firewall

Answer

Proxy firewall

Answer

Host-based firewall

Question 19

What is the primary purpose of utilizing a network intrusion detection system (NIDS)?

Accepted Answer

Detecting unauthorized access attempts

Answer

Preventing malware infections

Answer

Encrypting data in transit

Answer

Backing up network configurations

Question 20

When creating strong passwords, which option is considered a best practice?

Accepted Answer

Utilizing a combination of upper and lower case letters, numbers, and symbols

Answer

Using personal information (e.g., birthdates, pet names)

Answer

Making them short and easy to remember

Answer

Changing them infrequently

Question 21

What is the main functionality of a virtual private network (VPN)?

Accepted Answer

Establishing secure connections over public networks

Answer

Enhancing network performance

Answer

Blocking malicious websites

Answer

Storing sensitive data

Question 22

Which of the following is a common social engineering attack technique?

Accepted Answer

Phishing

Answer

Malware distribution

Answer

Distributed denial-of-service (DDoS) attacks

Answer

Buffer overflow attacks

Question 23

For remote access, why is multi-factor authentication employed?

Accepted Answer

Providing additional layers of protection against unauthorized access

Answer

Increasing the authentication process speed

Answer

Reducing the workload for network administrators

Answer

Enhancing user experience

Question 24

Which best practice should be followed to maintain the security of network devices?

Accepted Answer

Installing software updates regularly

Answer

Leaving default passwords unchanged

Answer

Enabling unnecessary services and ports

Answer

Using weak encryption algorithms

Question 25

What is the fundamental difference between a firewall and an intrusion detection system?

Accepted Answer

Firewalls prevent access, while intrusion detection systems detect unauthorized access attempts

Answer

Intrusion detection systems prevent access, while firewalls detect unauthorized access attempts

Answer

Firewalls and intrusion detection systems perform identical functions

Answer

Intrusion detection systems are costlier than firewalls