Network Security Fundamentals

I sit between the internet and the network. I protect the network, by blocking viruses, malware and worms. I can be both hardware and software

• Router

• Firewall

• Ethernet Cable

• Modem

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

• To encrypt data

• To monitor and control incoming and outgoing network traffic

• To detect malware

• To manage user access

Which of the following is a common encryption protocol used to secure data transmitted over the internet?

• HTTP

• FTP

• SSL/TLS

• SMTP

What is the purpose of a network vulnerability assessment?

• To install antivirus software

• To identify and evaluate security weaknesses in a network

• To create a backup of network data

• To configure network devices

Which principle is essential for secure network design?

• Single point of failure

• Open access to all users

• Defence in depth

• Minimal logging

What type of malware is designed to replicate itself and spread to other computers?

• Trojan horse

• Spyware

• Worm

• Adware

Which access control mechanism is based on the roles assigned to users?

• Discretionary Access Control (DAC)

• Mandatory Access Control (MAC)

• Role-Based Access Control (RBAC)

• Attribute-Based Access Control (ABAC)

What is the main advantage of using asymmetric encryption over symmetric encryption?

• Faster encryption and decryption

• Uses the same key for encryption and decryption

• More secure key distribution

• Easier to implement

Which tool is commonly used for network vulnerability scanning?

• Wireshark

• Nmap

• PuTTY

• FileZilla

What is the primary goal of intrusion detection systems (IDS)?

• To prevent data breaches

• To detect and alert on potential security incidents

• To encrypt sensitive data

• To manage network traffic