It is a networking device that forward data packets from source to destination machine over the network by using shortest path. It has advanced capabilities as it can analyze the data being carried over a network, decide or alter how it is packaged, and send it to another network of a different type.
What is the importance of router Read More »
A switch is a hardware networking device that connects multiple nodes, receives information from all nodes and sends it only to the selected node. A switch can analyse and receives data and send it to intended node. And hence also known as Intelligent Hub.
What is the role of switch in a network Read More »
A hub is hardware networking device that connects multiple nodes in a network and send and receive data from all the connected nodes. A hub contains multiple ports that are used to connect multiple nodes. A hub is best suitable for creating small home network (LAN). Hubs can be categorized in two types: Active Hub:
What are hubs What are it types Read More »
Modem plays very important role to connect computer or any other device such as router or switch to the Internet. it converts (modulate) an analog signal from telephone or cable wire to digital data that a computer can recognize. Similarly, it converts (demodulate) digital data from a computer or other device into an analog signal
What is the role of modem in electronic communications? Read More »
Star and bus topology Star topology Bus topology All nodes are connected to central hub All nodes are connected with single cable called backbone It is more expensive It is less expensive Chances of data collision is low Chances of data collision is high Failure of a node may affect entire network Failure of a
Compare and contrast star and bus topologies Read More »
Factors that govern the selection of a topology for a network are listed hereunder: Cost Flexibility Reliability Future Expansion Size of network Security
Discuss the factor that governs the selection of a topology for a network. Read More »
Following are the topologies mostly used: Star Topology Star topology: It is one of the most commonly used topology. In a star topology, nodes are not connected to each other, instead are connected to a central device called hub or switch. Information sent by a computer is received by hub/switch, which than determines which node
Explain various mostly used topologies. Read More »
Various types of networks are: Local Area Network (LAN) A Local Area Network is a collection of interconnected Computers and its associated devices that are located in a close proximity. Wide Area Network (WAN) A Wide Area Network is a collection of interconnected Computers and its associated devices that are located at different Geographic location
Discuss and compare various types of network Read More »
What is computer network When two or more similar things or objects get connected with each other, it becomes a Network. There are various examples of Network as given below: Computer network Mobile network Social Network Organizational Network such as Bank, Airlines, Railway etc. Goals of network Information sharing Resource sharing Storage sharing Enhanced communication
What is a network What are its goals and applications Read More »
Get Sumita Arora Textbook Solution of IP Class 12 Unit 3 Chapter 9 Introduction to Computer Network short questions, Long practical Question Answer Short Question Answer What is a network? What are its goals and applications? Discuss and compare various types of network. Explain various mostly used topologies. Discuss the factor that governs the selection
Computer Network | Sumita Arora Solution Chapter 9 | IP Class 12 Read More »
