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Category Archives: Computer Networks

Prerequisite : Stop and Wait ARQ The Stop and Wait ARQ offers error and flow control, but may cause big performance issues as sender always… Read More
Computer networks that provide connection-oriented services are called Virtual Circuits while those providing connection-less services are called Datagram networks. For prior knowledge, the Internet which… Read More
We’ve been studying a lot about the Wired Network. Ethernet is the most common example. Wired networks differ from wireless which uses radio waves rather… Read More
The Caesar Cipher technique is one of the earliest and simplest methods of encryption technique. It’s simply a type of substitution cipher, i.e., each letter… Read More
This article describes a very basic one-way Client and Server setup where a Client connects, sends messages to the server and the server shows them using… Read More
Error A condition when the receiver’s information does not match with the sender’s information. During transmission, digital signals suffer from noise that can introduce errors… Read More
What is congestion? A state occurring in network layer when the message traffic is so heavy that it slows down network response time.   Effects… Read More
In computer networks, data is sent in small blocks known as packets. Each packet is transmitted individually and may also follow a different route to… Read More
Characteristics Used in Connection-oriented communication. It offers error and flows control It is used in Data Link and Transport Layers Stop and Wait for ARQ… Read More
In address bar of a browser, have you noticed either http:// or https:// at the time of browsing a website? If neither of these are… Read More
Many folks get confused between these two terms which are associated with the Web. Are they really same? First thing first. HTML is a Language… Read More
Do many folks consider that they both are the same but are they really the same? The Internet is a global network of networks while… Read More
Consider a situation when you are not able to access a website and can access other websites. You would want to know if this is… Read More
What is Forwarding? Forwarding is moving incoming packets to the appropriate interface. Routers use a forwarding table to decide which incoming packet should be forwarded to… Read More
What are Unicasting, Anycasting, Multicasting and Broadcasting? If the message is sent from a source to a single destination node, it is called Unicasting. This… Read More

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