Computer Network Basics

What is a computer network?

• A computer network is a group of interconnected printers.

• A computer network is a group of interconnected refrigerators.

• A computer network is a group of interconnected computers.

• A computer network is a group of isolated computers.

What is the purpose of a router in a computer network?

• To play music in the network

• To forward data packets between computer networks.

• To cook food in the network

• To water plants in the network

What is the difference between LAN and WAN?

• LAN is a local network, while WAN is a wide area network.

• LAN is wireless, while WAN is wired.

• LAN has slower speeds than WAN.

• LAN is used for personal devices, while WAN is used for business networks.

What is an IP address?

• A specific brand of computer

• A form of internet currency

• A type of computer software

• A unique numerical label assigned to each device connected to a computer network.

What is the function of a firewall in a computer network?

• The function of a firewall in a computer network is to monitor and control incoming and outgoing network traffic based on predetermined security rules.

• A firewall in a computer network is used to enhance internet speed

• The function of a firewall in a computer network is to provide entertainment to users

• A firewall in a computer network is designed to cook food

What is the role of DNS in a computer network?

• DNS manages network hardware.

• DNS regulates internet speed.

• DNS resolves domain names to IP addresses.

• DNS encrypts network traffic.

What is a modem and how is it used in a network?

• A modem is a device that modulates and demodulates analog signals to encode and decode digital information, allowing computers to transmit data over telephone or cable lines.

• A modem is a type of router used to connect multiple devices to a network wirelessly.

• A modem is a device that converts digital signals to analog signals for faster data transmission in a network.

• A modem is a software application that enhances the security of a network by encrypting data packets.

What is the importance of network security?

• Network security is only important for large companies

• Network security does not impact data protection

• Network security is not necessary in today's digital world

• Network security is crucial for protecting data, preventing unauthorized access, ensuring privacy, maintaining system integrity, and safeguarding against cyber threats.

What is the difference between a hub and a switch?

• A hub sends data only to the intended recipient, while a switch broadcasts data to all devices.

• A hub broadcasts data to all devices, while a switch forwards data only to the intended recipient.

• A hub is used for wireless connections, while a switch is used for wired connections.

• A hub and a switch are the same thing.

What are the benefits of using a VPN in a computer network?

• Enhanced security, anonymity, access to geo-restricted content, secure remote access

• Increased vulnerability to cyber attacks

• Limited device compatibility

• Faster internet speed