Understanding Computer Networks

What is a computer network? Provide two examples.

• Virtual Private Network (VPN) - a secure connection over the internet.

• Bluetooth Network - a short-range wireless technology for connecting devices.

• Examples of computer networks include: 1. Local Area Network (LAN) - a network that connects computers within a limited area, such as a home or office. 2. Wide Area Network (WAN) - a network that covers a broad area, often connecting multiple LANs, such as the internet.

• Cloud Storage Network - a service for storing data online.

What are the main types of computer networks?

• VPN, VLAN, WLAN, SAN

• Bluetooth, Ethernet, Fiber, DSL

• Internet, Intranet, Extranet, Cloud

• LAN, WAN, MAN, PAN

Explain the concept of network security measures.

• Network security measures are strategies and tools to protect networks and data from unauthorized access and attacks.

• Network security measures are only about physical security of hardware.

• Network security measures are solely focused on improving internet speed.

• Network security measures are irrelevant in modern digital communication.

List and explain five advantages of a computer network.

• Reduced data security

• 1. Resource Sharing, 2. Communication, 3. Centralized Data Management, 4. Scalability, 5. Cost Efficiency

• Limited user access

• Increased hardware costs

List and explain five disadvantages of a computer network.

• Simplified Management: Networks require no special skills to manage.

• Lower Costs: Setting up a network is always cheaper than standalone systems.

• Increased Speed: Networks enhance data transfer rates.

• 1. Security Risks: Networks are vulnerable to hacking and unauthorized access. 2. Maintenance Costs: Regular updates and repairs can be expensive. 3. Dependency on Network Infrastructure: If the network fails, all connected devices may be affected. 4. Potential for Network Failures: Downtime can disrupt business operations. 5. Complexity in Management: Managing a network requires specialized knowledge and skills.

What is a Personal Area Network (PAN)?

• A Personal Area Network (PAN) is used for connecting devices in different cities.

• A Personal Area Network (PAN) is a network for connecting personal devices within a short range.

• A Personal Area Network (PAN) connects devices over the internet.

• A Personal Area Network (PAN) is a type of wide area network.

What is a Home Area Network (HAN)?

• A Home Area Network (HAN) is a local network connecting devices within a home.

• A Home Area Network (HAN) is a type of internet service provider.

• A Home Area Network (HAN) is a global network connecting homes worldwide.

• A Home Area Network (HAN) is a system for managing home appliances remotely.

What hardware components are essential for a computer network?

• Routers, switches, network interface cards (NICs), cables, and access points.

• Printers, monitors, keyboards, and mice

• Hard drives, SSDs, and USB drives

• Graphics cards, sound cards, and motherboards

What software is needed to connect to a computer network?

• Operating system software

• Word processing software

• Antivirus software

• Network interface software (e.g., drivers, network management software)

What is the role of network protocols in communication?

• Network protocols facilitate structured communication between devices, ensuring data integrity and compatibility.

• Network protocols are only used for wireless communication.

• Network protocols are irrelevant to data transfer.

• Network protocols only manage hardware connections.