Computer Network System Quiz for Grade 7

What is a computer network?

• A group of interconnected computers that communicate with each other and share resources.

• A group of computers that only communicate with humans

• A network of televisions and radios

• A group of computers that are not connected to each other

What are the advantages of using a computer network?

• Increased workload and stress

• Isolation and lack of communication

• Higher costs and resource wastage

• Some advantages of using a computer network include resource sharing, communication, and cost savings.

What is the difference between LAN and WAN?

• LAN is used for wireless connections, while WAN is used for wired connections

• LAN connects devices within a limited area, while WAN connects devices over a large geographical area.

• LAN is faster than WAN

• LAN and WAN are the same thing

What is a router and how does it work?

• A router is a gardening tool used to trim hedges and bushes. It works by using sharp blades to cut through the plants.

• A router is a type of airplane that flies at low altitudes. It works by using propellers to generate lift and thrust.

• A router is a kitchen appliance used to slice bread. It works by using a motorized blade to cut through the loaf.

• A router is a networking device that forwards data packets between computer networks. It works by using headers and forwarding tables to determine the best path for data to travel.

Explain the concept of IP address and its importance in networking.

• An IP address is a type of email address used for sending messages over the internet.

• An IP address is a type of software used to protect a computer from viruses.

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

• An IP address is a password used to access a computer network.

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

• To provide entertainment for the users

• To protect the computer network from unauthorized access and cyber attacks.

• To increase the risk of cyber attacks

• To make the network run faster

What are the different types of network topologies?

• square, triangle, circle, hexagon

• red, blue, green, yellow

• up, down, left, right

• bus, star, ring, mesh, and hybrid

Explain the concept of data transmission in computer networks.

• Data transmission in computer networks is the process of converting data into sound waves for transfer

• Data transmission in computer networks involves the movement of physical objects from one device to another

• Data transmission in computer networks is the process of sending data through telepathy

• Data transmission in computer networks involves the movement of data from one device to another through a communication channel.

What is the role of DNS in a computer network?

• Translate domain names into IP addresses

• Encrypt data transmission

• Control network traffic

• Manage computer memory

What are the common security threats in computer networks and how can they be prevented?

• Sharing passwords with everyone

• Leaving the network open to all users

• Using strong passwords, implementing firewalls, keeping software updated, and educating users about phishing and social engineering attacks

• Never updating software or security measures