by Dinesh Thakur Category: Switching

The majority of people, not having lines (cable or Ethernet) linked directly to the Internet, must use telephone lines (the most widely used network) to connect to the Internet. The connection is made using a modem, a device capable of converting digital data from the computer into analogue signals (that can circulate on telephone lines by amplitude or frequency modulation, in the same way as voice when you use the telephone).



 
by Dinesh Thakur Category: Switching

Fiber optic technology is considered to meet the ever-increasing demand of bandwidth for the exchange of information and Wavelength Division Multiplexing (WDM) provides solutions for the ever-increasing demand of bandwidth through optical networks. In optical communication" the analog of FDM is referred to as wavelength-division multiplexing (WDM).



 
by Dinesh Thakur Category: Switching

As explained above, the cell is formed of exactly 53 bytes, comprising 5 bytes of header and 48 bytes of data.

 
by Dinesh Thakur Category: Switching

Virtual Circuit (VC) - In this type connection, DTE selects the links to be used before communication to connect a receiver just as in the case of telephone network. In other words, we may say that a pre-planned route established before any packets are sent. A communications arrangement in which data from a source user may be passed to a destination user over various real circuit configurations during a single period of communication and the Information about the routing of packets is stored in all nodes throughout the set-up phase. Virtual circuits generally set up on a per connection basis and are disconnected when the connection is terminated and after that, the information in the network is erased. However, a permanent virtual circuit can be established as an option to provide a dedicated link between two facilities.



 
by Dinesh Thakur Category: Switching

There are two main types of Public Domain Networks (PDN).

 
by Dinesh Thakur Category: Switching

Cell relay is data transmission service that uses transmission technology referred to as Asynchronous Transfer Mode (ATM). As the name suggests, the data transmission unit is a fixed length of data known as a cell. High-speed transmission compared to other services like frame relay is possible with the cell relay method. The cell relay is considered by most to be the transport service of the future.

 
by Dinesh Thakur Category: Switching

The purpose of ATM is to provide high speed, low-delay multiplexing and switching networks to support any type of user traffic, such as voice, data or video applications. This is specifically designed as single technology for voice, video, and data.

 
by Dinesh Thakur Category: Switching

Because the Layer 2 protocols depend heavily on the features originally specified for PPP, it is worth examining this protocol more closely. PPP was designed to send data across dial-up or dedicated point to- point connections. PPP encapsulates IP, IPX, and NetBEUI packets within PPP frames, and then transmits the PPP-encapsulated packets across a point-to-point link. PPP is used between a dial-up client and an NAS.



 
by Dinesh Thakur Category: Switching

As we know, for transmitting a bit, it must transmit a particular signal to recognize if its value is equal to 0 or 1. The technical baseband sub crenellated is not reliable when the distance exceeds a few hundreds of meters. For a signal that we can recover properly, it must be given a special shape the modulating.

 
by Dinesh Thakur Category: Switching

The terminal connected to the packet switched network can communicate with multiple terminals at the same time using a single physical line. This makes it possible to set multiple logical paths called logical channels on a single physical line.

 

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About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.SC (Computer Science), MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to Contact us.