Fundamentals of Network Security

What is the primary purpose of a firewall?

• To enhance network speed by increasing bandwidth.

• To provide a backup solution for network devices.

• To store data securely in the cloud.

• To protect networks by controlling traffic and preventing unauthorized access.

Define the term 'malware'.

• Malware refers to software that enhances system performance.

• Malware is a programming language for creating applications.

• Malware is a type of hardware used in computers.

• Malware is software designed to disrupt, damage, or gain unauthorized access to computer systems.

What does VPN stand for and what is its purpose?

• Virtual Protected Network

• Virtual Private Network

• Virtual Public Network

• Variable Private Network

Explain the concept of 'phishing'.

• Phishing is a method of securing sensitive information through encryption.

• Phishing is a type of software used to enhance online security.

• Phishing is a cyber attack that deceives individuals into revealing sensitive information by pretending to be a trustworthy source.

• Phishing refers to the process of creating strong passwords for online accounts.

What is the difference between symmetric and asymmetric encryption?

• Symmetric encryption is used for digital signatures.

• Symmetric encryption uses one key for both encryption and decryption, while asymmetric encryption uses a pair of keys.

• Asymmetric encryption uses a single key for both processes.

• Symmetric encryption is faster than asymmetric encryption.

What is a DDoS attack?

• A DDoS attack is a method to enhance service performance.

• A DDoS attack is a type of software used for network monitoring.

• A DDoS attack is a malicious attempt to disrupt a service by overwhelming it with traffic from multiple sources.

• A DDoS attack is a security measure to protect against data breaches.

Name one common protocol used for secure data transmission.

• SMTP

• FTP

• POP3

• HTTPS

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

• To manage user access permissions on a network.

• The role of an intrusion detection system (IDS) is to monitor and analyze network traffic for signs of unauthorized access or attacks.

• To encrypt sensitive data during transmission.

• To provide a firewall for network protection.

What does the term 'social engineering' refer to in cybersecurity?

• A method of encrypting data for secure transmission.

• A type of malware that targets social media accounts.

• The manipulation of individuals to gain confidential information.

• A strategy for improving team communication in IT departments.

Why is it important to regularly update software and systems?

• It is important to regularly update software and systems to enhance security, improve performance, fix bugs, and ensure compatibility.

• To limit access to features

• To increase the cost of maintenance

• To make the software harder to use