"Go-Back-N Protocol and "Selective Repeat Protocol" are the sliding window protocols. The sliding window protocol is primarily an error control protocol, i.e. it is a method of error detection and error correction. The basic difference between go-back-n protocol and selective repeat protocol is that the "go-back-n protocol" retransmits all the frames that lie after the frame which is damaged or lost. The "selective repeat protocol" retransmits only that frame which is damaged or … [Read more...]

In the previous article, we have discussed Serial and Parallel Transmission. As we know in Serial Transmission data is sent bit by bit, in such a way that each bit follows another. It is of two types namely, Synchronous and Asynchronous Transmission. One of the major differences is that in Synchronous Transmission, the sender and receiver should have synchronized clocks before data transmission. Whereas Asynchronous Transmission does not require a clock, but it adds a parity bit to the data … [Read more...]

The protocols TCP and UDP are the two TCP/IP transport layer protocols. There exist some similarities and dissimilarities between the Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). One of the differences is that TCP is a connection-oriented protocol as it establishes an end to end connection between computers before transferring the data. On the other hand, UDP is a connection-less protocol since it does not determine the connection before sending data. The TCP and UDP … [Read more...]

For transferring data between computers, laptops, two methods are used, namely, Serial Transmission and Parallel Transmission. There are some similarities and dissimilarities between them. One of the primary difference is that; in Serial Transmission, data is sent bit by bit whereas, in Parallel Transmission a byte (8 bits) or character is sent at a time. The similarity is that both are used to connect and communicate with peripheral devices. Furthermore, the parallel transmission is … [Read more...]

Most of us get confused between the terms Internet and Intranet. Although there exist a lot of disparity between them, one of the differences is that the Internet is open to all and can be accessed by everyone whereas, Intranet requires authenticated login as an organization privately owns it. As the internet is open for all, there was a need to develop a network which would specifically work for a certain range like within an organization or private community, school, college, university, … [Read more...]

The “Antivirus” and “Internet Security” are the software that protects the user from malicious programs by blocking and removing them. There are some similarities and dissimilarities between them. One of the major differences is that Antivirus protects the computer from viruses whereas, Internet Security provides protection from spyware, viruses, phishing, spam, and email attachments. Internet security is considered as an umbrella term for the division of computer security that handles the … [Read more...]

Virus and Worms are the malicious programs, which enters our computers through CD's, Pen drives, email attachments and the files we download from the Internet. Both have some similarities and dissimilarities between them. One of the major differences is that Worms do not require any human action to replicate while Viruses replicates as soon as the user runs the infected file. The malicious softwares are known as malware, which is broadly divided into two categories: one which needs a host … [Read more...]

The Network allows computers to connect and communicate with different computers via any medium. LAN, MAN, and WAN are the three types of the network designed to operate over the area they cover. There are some similarities and dissimilarities between them. One of the significant differences is in the geographical area they cover, i.e. LAN covers the smallest area; MAN covers an area larger than LAN and WAN comprises the largest of all. Furthermore, LAN networks rely on the hardware and … [Read more...]

TCP/IP and OSI are the two most widely used networking models for communication. There are some similarities and dissimilarities between them. One of the major difference is that OSI is a conceptual model which is not practically used for communication, whereas, TCP/IP is used for establishing a connection and communicating through the network. The OSI model mainly emphasis on the services, interfaces and protocols; make a clear distinction between these concepts. Conversely, the TCP model is … [Read more...]