by Dinesh Thakur Category: Communication Networks

Let us examine the transmission technique that is to say how a transmitter can send a signal that the receiver will recognize as a 1 or a 0.

 
by Dinesh Thakur Category: Communication Networks

Broadband ISDN (BISON) The next-generation of ISDN technology, with promised bandwidths from 150 megabits per second upward, sufficient to carry video-phone calls and movies. BISON will be carried over FIBRE-OPTIC cabling rather than wire, and the underlying transport protocol will be ASYNCHRONOUS TRANSFER MODE. Different implementations are planned in the USA, which will employ YNCHRONOUS OPTICAL NETWORK and Europe, which will use SYNCHRONOUS DIGITAL HIERARCHY.



 
by Dinesh Thakur Category: Communication Networks

100VG-AnyLan (VG =Voice Grade) is a joint development of AT&T Microelectronics, Hewlett-Packard, and IBM and is standardized by the newly created IEEE 802.12 committee. 100VG-AnyLAN supports Ethernet, Token Ring, and other LAN standards, incorporating a collision less polling technique. It is not that simple as it appears. A router upgrade is required to connect 100VG Ethernet and 100VG Token Ring.

 
by Dinesh Thakur Category: Communication Networks

Parity is a form of "error checking" where the computer checks to see if all the data it was supposed to get really did come through. You will most likely be confronted with parity when you use a telecommunications package to communicate through your modem. In fact, that's probably why you're reading this. The dialog box where you can set the serial port settings always wants to know the parity. The default setting is probably the safest thing to use if you don't know a reason to change it.



 
by Dinesh Thakur Category: Communication Networks

Half duplex means data can be relayed in only one direction at a time. Two-way transmission is possible, but the transmissions must be alternate. A walkie-talkie is half duplex-when one person is speaking, she cannot also listen A telephone is full duplex-information can go both ways simultaneously; both ends can talk and hear all the time-so does a modem.

 
by Dinesh Thakur Category: Communication Networks

AppleTalk: A proprietary LAN protocol that is built into Apple's MACINTOSH computers. AppleTalk is independent of the underlying network transport, and is currently able to run over serial cable (LocalTalk) or over an ETHERNET network (EtherTalk).  An AppleTalk port is built in to all Macs.



 
by Dinesh Thakur Category: Communication Networks

1 Literally, not synchronized; that is, proceeding at its own pace.

2 In electronics, it describes circuits that do not operate in step with other devices controlled by a shared CLOCK SIGNAL.

 
by Dinesh Thakur Category: Communication Networks

The Ethernet frame is designed to transport packets in enterprise networks by an original method for broadcasting on a local network. This solution gave birth shared Ethernet, in which the broadcast frame is transmitted and where only the station that recognizes the right to copy the information. To this solution dissemination has added Ethernet switching.



 
by Dinesh Thakur Category: Communication Networks

From the early 1900s until now, long distance communication has primarily been in the form of the telephone line. Now telephone lines are being used for more than the transmission of voice; they are also used for the transmission of computer data. There are many reasons why someone might want to transfer data between one PC and another using phone lines.



 
by Dinesh Thakur Category: Communication Networks

Bit Error: An error in a single BIT within a BYTE or WORD of data transmitted over a noisy channel: for example if the byte sent was 11111111 then a received value of 11111101 would represent a bit error in the second bit. There are well-known ERROR DETECTION AND CORRECTION algorithms that can correct one or more such bit errors, given some extra, redundant information, and these techniques are widely applied in the mechanisms of HARDDISK and CD-ROM drives, as well as in telecommunication systems.



 
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.



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