The network layer function is to provide end-to-end communication between the two computers where the source and the destination computers may be in the different networks. When the source and destination computers communicate with each other the packet from the source has to travel through several LANs or WANs to reach the destination. As the packet travels across different … [Read more...] about Network Layer Functions
Computer Networks
Switching Techniques
Switching techniques are the methods used to route the data from one node to another in a switched communication network. Switching techniques are categorized into three types circuit switching, packet switching, and message switching. The first two switching technologies are commonly used in networking nowadays. Switching Techniques in Networking Why Switching? … [Read more...] about Switching Techniques
Internet Standard
Internet standard is a working document or a proposed specification that gains the status of the standard after proper validation and is applicable to the worldwide Internet. This Internet standard is formed under the supervision of the Internet Society (ISOC) which is responsible for the creation and implementation of Internet standards. In this section, we will discuss the … [Read more...] about Internet Standard
Switched WANs
Switched WAN network is a network that has several end nodes. There are two kinds of WAN networks point-to-point WAN network which connects two end nodes using a dedicated communication line and the other is switched WAN network that is a mesh of a point-to-point network that provides access to several end nodes. In our previous content i.e., point-to-point WAN network we … [Read more...] about Switched WANs
Point-to-Point WAN
The point-to-point WAN is a kind of network that establishes a connection between two remote devices using a leased line that is meant for public networks such as telephone lines. In this section, we will discuss the technologies that are used to create a point-to-point WAN network. Point-to-Point WAN Technologies Traditional Modem DSL Technology Cable Modem T … [Read more...] about Point-to-Point WAN
Wireless Local Area Network
A wireless local area network is a local area network where the computers are interconnected to each other using the high-frequency radio wave instead of wires and cables. The wireless local area network provides mobility to the end nodes. In this section, we will discuss wireless local area networks in brief, along with this we will also study the techniques which can be … [Read more...] about Wireless Local Area Network
Multiplexing and it’s Types
Multiplexing is a technique which integrates several signals and transmits it over a single data link. These multiplexed signals are accepted by the demultiplexer which separates them and delivers them to the corresponding node. Multiplexing makes the transmission of multiple signals, economical as we do not have to add a new link for each new signal. Multiplexing can be … [Read more...] about Multiplexing and it’s Types
Unguided Transmission Media
The unguided transmission media is one which does not use the physical medium to transmit information from one computer to another. Unlike the guided transmission media, the unguided transmission media utilize air as a transmission media instead of wire or cable so it is also termed as ‘wireless transmission media’. The wired or guided transmission media are good at their … [Read more...] about Unguided Transmission Media
Communication Satellites
Communication satellites are human-made satellites that work in such a way that the satellite receives a signal from one point on earth, amplifies the signal and send it back to another point earth using transponders. Thus, it creates the communication network between the source that transmitted the signal and receiver. Communication satellite or the artificial satellite can … [Read more...] about Communication Satellites
Guided Transmission Media
Guided transmission media is the physical medium that is used to transfer information bits from one computer to the other. The physical medium directs the path that information bits have to follow to reach the desired receiver. The other transmission medium is the unguided transmission media which does not incorporate any physical medium for the transmission of the … [Read more...] about Guided Transmission Media