Computer Science Basics

What is a computer network?

• A computer network is a group of isolated computers that cannot communicate with each other.

• A computer network is a group of interconnected refrigerators that can communicate with each other and share resources.

• A computer network is a group of interconnected computers that can communicate with each other and share resources.

• A computer network is a group of interconnected televisions that can communicate with each other and share resources.

What is the purpose of a firewall in cybersecurity?

• Firewalls are designed to block all network traffic

• Firewalls are used to increase internet speed

• Firewalls are only necessary for personal computers

• The purpose of a firewall in cybersecurity is to monitor and control network traffic to protect against unauthorized access and cyber attacks.

Explain the difference between LAN and WAN.

• LAN is wireless, while WAN is wired.

• LAN and WAN are the same and can be used interchangeably.

• LAN connects devices within a limited area, while WAN connects devices across a broad area.

• LAN connects devices across a broad area, while WAN connects devices within a limited area.

What is phishing and how can it be prevented?

• Always respond to emails requesting personal information

• Click on any link in an email without verifying its authenticity

• Disable security software to increase email speed

• Be cautious of unsolicited emails, verify sender's identity, avoid clicking on suspicious links, and use security software.

What is encryption and why is it important in cybersecurity?

• Encryption is the process of converting data into a code to prevent unauthorized access. It is important in cybersecurity to protect sensitive information from being intercepted or accessed by malicious actors.

• Encryption slows down data transfer and is not worth the added security.

• Encryption is only important for physical security, not cybersecurity.

• Encryption is the process of decoding data to make it accessible to everyone.