Communication channels, Basic Computer Science

Assignment Help:

COMMUNICATION CHANNELS:

A wire pair connecting two telephones is the simplest circuit, allowing communication in both directions. Other channels include coaxial cables, optical fibres, satellites, a light beam, microwaves, and others. Whatever the physical medium over or through which message travels, transmission may take place in a number of different modes. They are :

Simplex Half-duplex and Full-duplex. Simplex  In this type of channel, the message travels in only one direction, that     is from point A to point B but not back again. 

Half-Duplex: Transmission can take place in either direction, but not at the same time. In other words, message can be transmitted either from A to B or by B to A one at a time. 

Full-Duplex: In this type of arrangement messages can be transmitted and received over the same channel at the same time. Many librarians and information scientists are familiar with the latter two types because database search terminals must be set to transmit full or half duplex in order to communicate with database vendors' computers.  


Related Discussions:- Communication channels

Access database, 1.Add a Validation Rule for Date of Birth so no one under ...

1.Add a Validation Rule for Date of Birth so no one under the age of 18 can be added to the table. Hint: subtract the DOB from today''s date and divide by 365.25 (watch the parenth

Cprgm, A palindrome is a string that reads the same from both the ends. Giv...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

Describe circuit switching and message switching, Question 1 List the Basi...

Question 1 List the Basic essential components of a computer network Question 2 What are the functions of (i) Routers (ii) Bridges Question 3 What are the advantag

One dimensional array, One dimensional array:  A one-dimensional arra...

One dimensional array:  A one-dimensional array  is a structured collection of elements  that can be accessed individually by specifying the position of a component with  ind

What is Assembler Programming?, To build assembler programs with TASM prog...

To build assembler programs with TASM programs is a different program structure than from using debug program. It''s important to comprise the subsequent assembler commands: ..CODE

Cpu, what is cpu

what is cpu

What is packet switching? explain, Question 1 What are the five subscriber...

Question 1 What are the five subscriber-related signaling functions performed by the operator? Question 2 Compare Microprogrammed control and Hard-wired control Que

Project, My son has a project assignment he has problem with. The only thin...

My son has a project assignment he has problem with. The only thing is, it is due in 20 mins. can someone be able to help him? if so, how much is the fee?

The form is merely submitted if a user selects either red, Question (a)...

Question (a) What do we signifies by saying that HTTP is a stateless protocol? (b) Explain three ways of working around that statelessness issue (c) Explain with the help

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd