Data Communication and Network A Level

What is a network topology?

• A network topology refers to the layout pattern of interconnections between the various elements (links, nodes, etc.) of a computer network.

• A software for network security

• A type of computer virus

• The speed of internet connection

Explain the concept of data link layer.

• The data link layer is responsible for compressing data before transmission.

• The data link layer is responsible for encrypting data during transmission.

• The data link layer is only concerned with routing data to the correct destination.

• The data link layer is responsible for the reliable transmission of data across a physical link, and it handles error detection and correction, as well as flow control.

What are the different types of internet protocols?

• HTML, CSS, JavaScript

• GIF, JPEG, PNG

• The different types of internet protocols include HTTP, FTP, SMTP, POP3, IMAP, TCP, UDP, IP, and more.

• Windows, Mac, Linux

What is the purpose of network topologies in data communication?

• To create a map of the network administrator's favorite vacation spots

• To determine the color scheme of the network

• The purpose of network topologies in data communication is to define the layout of the connections between nodes in a network, which helps in determining how data is transmitted and how the network functions.

• To decide the type of coffee to be served in the office

Describe the functions of data link layer in a network.

• The data link layer is responsible for framing, addressing, and error detection in the network. It also manages the flow of data between devices and handles the physical transmission of data.

• The data link layer manages the routing of data between devices in the network.

• The data link layer is only responsible for handling the physical transmission of data.

• The data link layer is responsible for encrypting data in the network.

How do internet protocols facilitate communication over the internet?

• Internet protocols are only used for sending emails

• Internet protocols only work for communication between devices of the same brand

• Internet protocols facilitate communication over the internet by providing a set of rules and conventions for data transmission and reception between devices. They enable devices to establish connections, exchange data, and ensure that information is delivered accurately and efficiently.

• Internet protocols are not necessary for communication over the internet

What are the advantages and disadvantages of different network topologies?

• Star topology offers no scalability

• Ring topology is prone to network congestion

• Advantages and disadvantages of network topologies include bus topology's simplicity and cost-effectiveness, but it can be prone to network congestion. Ring topology offers efficient data transfer, but a failure in one node can disrupt the entire network. Star topology provides easy troubleshooting and scalability, but it relies heavily on the central hub. Mesh topology offers redundancy and fault tolerance, but it can be expensive and complex to set up.

• Bus topology is the most expensive and complex to set up

Discuss the role of data link layer in error detection and correction.

• The data link layer plays a crucial role in error detection and correction by adding error-checking bits to the data and retransmitting the data if errors are detected.

• Error detection and correction is the responsibility of the physical layer

• Error detection and correction is only performed at the network layer

• The data link layer has no role in error detection and correction

Explain the working of TCP/IP protocol suite.

• TCP/IP protocol suite consists of only two layers

• It is a set of protocols used for sending physical mail

• The TCP/IP protocol suite is used for cooking recipes

• The TCP/IP protocol suite is a set of communication protocols used on the internet. It provides end-to-end connectivity specifying how data should be formatted, addressed, transmitted, routed, and received. It consists of four layers: the link layer, the internet layer, the transport layer, and the application layer.

Compare and contrast different internet protocols in terms of their features and applications.

• Comparing internet protocols is not important

• There is only one internet protocol

• The correct answer to the question would involve discussing the features and applications of various internet protocols such as TCP/IP, HTTP, FTP, SMTP, and others, and highlighting their differences and similarities.

• All internet protocols have the same features and applications