Exploring Computer Networks

What is a computer network?

• A computer network is a type of software used for programming.

• A computer network is a system of interconnected computers and devices that communicate and share resources.

• A computer network is a collection of random devices without any communication.

• A computer network is a single computer that operates independently.

What are the main types of computer networks?

• Bluetooth, Ethernet, Fiber, DSL

• VPN, VLAN, WLAN, SAN

• Internet, Intranet, Extranet, Cloud

• LAN, WAN, MAN, PAN

Explain the difference between LAN and WAN.

• LAN is a type of WAN.

• LAN is for local connections, while WAN is for long-distance connections.

• LAN and WAN are the same type of network.

• WAN is used for local connections only.

What is the purpose of a router in a network?

• To provide wireless connectivity to devices.

• To amplify signals in a network.

• The purpose of a router in a network is to direct data packets between different networks.

• To store data packets for later use.

Define the term 'IP address'.

• A physical address of a computer in a local area network.

• An IP address is a unique numerical label assigned to each device on a network that uses the Internet Protocol for communication.

• A type of software used for browsing the internet.

• A method for encrypting data on a network.

What is the function of a switch in networking?

• To amplify signals in a network

• To provide wireless connectivity to devices

• The function of a switch in networking is to connect devices within a LAN and forward data based on MAC addresses.

• To connect devices across different networks

What is the OSI model and how many layers does it have?

• 3 layers

• 10 layers

• 5 layers

• 7 layers

What is the difference between TCP and UDP?

• UDP guarantees delivery of packets, while TCP does not.

• TCP is reliable and connection-oriented, while UDP is faster and connectionless.

• TCP is connectionless and has lower latency than UDP.

• TCP is faster and connection-oriented, while UDP is reliable and connectionless.

What is a firewall and how does it work?

• A firewall is a device that boosts internet speed by compressing data.

• A firewall is a network security device that monitors and controls network traffic based on security rules.

• A firewall is a physical barrier that prevents unauthorized access to buildings.

• A firewall is a type of antivirus software that removes malware from devices.

What are the advantages of using wireless networks?

• Limited range and coverage

• High installation complexity

• Increased security risks

• Advantages of using wireless networks include flexibility, mobility, ease of installation, and cost-effectiveness.