Classification of Computer Networks (A) Based on network physical geographical size/area and the area they cover, computer networks are classified into the following types: – This is one of the most common types of computer networks. (1.) Personal Area Network(PAN) (2.) Local Area Network(LAN) (3.) Metropolitan Area Network(MAN) (4.) Wide Read more…
Transmission/Communication Medium or Channel: A communication medium or channel is also known as a Transmission medium or channel. The transmission medium is the physical path/connection between transmitting and receiving devices in a data transmission system of a computer network. Transmission media is one of the major components of a communication Read more…
History The concept of Multiplexing originated in telegraphy in the 1870s, and is now widely applied in different streams of communications. Introduction The transmission of data over a network, either in wireless or wired medium, requires to solve the problem of being able to send a large amount of data Read more…
History of Computer Networks In 1960, the ARPANET (Advanced Research Projects Agency Network) was widely recognized as the world’s first operational packet-switching computer network and the foundational technology of the modern internet. Developed By: The U.S. Department of Defense’s Advanced Research Projects Agency (ARPA, now DARPA). First Operational: 1969. Key Milestone: The first successful message transmission occurred on October 29, Read more…
Modulation (Click this Link for the difference between Modulation & Encoding) Introduction of Modulation As we know that in normal communication, signals lose their strength/energy slowly as they travel medium up to large distances. To send these transmitting message signals effectively for long distances, we use the modulation technique. At Read more…
Slno Name of Books Author Publication Computer Network 1. Computer Networks A. S. Tanenbaum Practice Hall of India 2. Introduction to Data Communication & Networking Behrouz Forouzan Tata McGraw Hill(TMH) 3. Computer Networking J.F. Kurose & K.W. Ross Pearson Publication 4. Communications Networks Leon Garcia, and Widjaja Tata McGraw Hill Read more…
Computer Network Basics Ques. : What is the difference between Network and Computer Network? Ques. : What is Networking? Ques. : What is Node in a Computer Network? Ques. : What is Link in a Computer Network? Ques. : What is the difference between internet, intranet and extranet in a computer Read more…
Difference Between Data and Signal 4. Slno Data Signal 1. Data is what we need to sent through a medium.Data is being carried from one place to another. Signal is what we can sent.Signals are used to carry information from one device to another. 2. Data is Read more…
History of Fundamentals of C++ It was developed at AT&T Bell Laboratories USA in the early 1979s by Danish computer scientist Bjarne Stroustrup when doing work for his Ph.D. thesis. Its initial name was C with classes, but later on, in 1983, it was renamed C++. Introduction of C++ C++ is Read more…
Text area Tag (<textarea> </textarea>) Example : How to create text area to store large size data. Example : How to limit the characters in text area . Example : How to fix border size (disable re-sizable property) of textarea.