Internet Structure and Protocol Layering

What is the internet?

• A collection of interconnected networks, routers, cables, and hardware spanning the world

• A service that runs on the internet

• A wide area network

• A protocol stack consisting of four layers

Isabella, Kiara, and Amelia are discussing about the digital world. Isabella says that the internet and the world wide web are the same thing. Kiara disagrees and says that the internet is a service that runs on the world wide web, while the world wide web is a collection of interconnected networks. Amelia, however, believes that the internet is a wide area network, while the world wide web is a protocol stack. But, their computer science teacher explains that the internet is a collection of interconnected networks, while the world wide web is a service that runs on the internet. Who is correct?

• The teacher is correct: The internet is a collection of interconnected networks, while the world wide web is a service that runs on the internet

• Amelia is correct: The internet is a wide area network, while the world wide web is a protocol stack

• Kiara is correct: The internet is a service that runs on the world wide web, while the world wide web is a collection of interconnected networks

• Isabella is correct: The internet and the world wide web are the same thing

Which layer of the TCP/IP protocol stack is responsible for addressing packets and routing them across the network?

• Application layer

• Transport layer

• Internet layer

• Link layer

What is the advantage of layering protocols in the TCP/IP stack?

• It reduces the complexity of networking by dividing it into smaller subproblems

• It allows different vendors' products to work together

• It ensures successful communication between devices

• It provides a defined responsibility for each layer

Sophia and Arthur are working on a project to build a network application. They are discussing which layer of the TCP/IP protocol stack is responsible for establishing an end-to-end connection and maintaining conversations between their application processes. Ava, their team leader, asks you for help. What would you suggest?

• Application layer

• Transport layer

• Internet layer

• Link layer

What is the purpose of the Domain Name System (DNS)?

• To map domain names to IP addresses

• To establish end-to-end connections between hosts

• To divide the complex task of networking into smaller subproblems

• To facilitate the transmission of binary data via any media

What is the role of the link layer in the TCP/IP protocol stack?

• To add the source and destination IP addresses to each packet

• To add the unique media access control (MAC) address for the source and destination devices

• To split the data into separate packets

• To establish an end-to-end connection and maintain conversations between application processes

Poppy, Ishaan, and Eesha are setting up a computer network for their school project. They are discussing why they need both MAC addresses and IP addresses in their network setup. Can you help them understand?

• MAC addresses are used for communication within the same local area network (LAN), like the one in their school, while IP addresses are used for communication between different networks, like the school network and the internet

• MAC addresses are used for communication between different networks, like the school network and the internet, while IP addresses are used for communication within the same local area network (LAN), like the one in their school

• MAC addresses are used for communication within the same wide area network (WAN), like the entire school district, while IP addresses are used for communication between different networks, like the school network and the internet

• MAC addresses and IP addresses serve the same purpose in their network setup

Samuel is setting up a network and he comes across a DNS resolver server. What would be the purpose of this server in his network?

• To query the DNS root name server

• To map domain names like 'Amelia.com' or 'Muhammad.net' to their respective IP addresses

• To send get requests to web servers

• To handle client requests for web pages and resources

Neha, Evie, and Isabella are working on a school project about the internet. They are discussing the role of web servers in the world wide web. According to them, what is the main purpose of web servers?

• To store and handle client requests for web pages and resources

• To map domain names to IP addresses

• To establish end-to-end connections between hosts

• To facilitate the transmission of binary data via any media