Token ring, Computer Network Security

Assignment Help:

TOKEN RING

Many LAN methods that are ring topology need token passing for synchronized access to the ring. The ring itself is acts as a single shared communication phase. Both pass from transmitter passed by other devices and are copied by destination.

Hardware have to be designed to pass token ever if attached device powered down. This is given in figure below

 

2432_token Ring.png

 

USING THE TOKEN:

When a device waits to transfer it waits a token. After transmission device transmits token on ring. Next device is then ready to send, receive and then transmits.

 

TOKEN AND SYNCHRONIZATION:

 Because there is only one token, only one device will transmit at a time. Token is a short reserved frame that may not seem in data.

 Hardware must recreate token if lost. Token produce computer permission to send one packet frame. If all devices are ready to transmit it enforces Round-Robin process. But if now device is ready to transmit, token circulates in whole ring.

IBM TOKEN RING:

 It is very commonly used. It was usually 4Mbps and now it is upto 16Mbps. It needs special connection cable between the device and the Ring interface.

 


Related Discussions:- Token ring

Star topology, STAR TOPOLOGY In this topology, all devices are attache...

STAR TOPOLOGY In this topology, all devices are attached to a central point, which is sometimes known as the "Hub" as given in the diagram below.   Figure: An ideal

Describe the time limit problem, Problem: (a) Use a simple example to ...

Problem: (a) Use a simple example to explain what is meant by a finite state machine. (b) Describe the time limit problem in an interrupt-driven system. (c) A certain m

Define the term enterprise network, a) Define the term "Enterprise Network"...

a) Define the term "Enterprise Network". b) Briefly discuss the similarity and differences between a switch and a router. c) A company XYZ has been renting the 1 st Floor of

How an attacker can effectively de-layer and analyse data, Around the globe...

Around the globe the bank controlled Co-ops (Visa, MasterCard, Discover, and American Express) have rolled out millions of smart cards under the EMV (Europay, MasterCard, VISA) sta

Briefly explain the contents of the needs analysis, QUESTION (a) Brief...

QUESTION (a) Briefly explain the contents of the Needs Analysis, which is step in the process of network design. (b) Describe on the three ways of improving the performan

The security systems development life cycle (secsdlc), The Security Systems...

The Security Systems Development Life Cycle (SecSDLC) The same phases which is used in traditional SDLC can be adapted to support specialized implementation of IS project,At its

Direct point-to-point communication:, Early networks used simple point-to...

Early networks used simple point-to-point communication . In such a method of communication every communication channel connects exactly two devices. In this way it prepares a m

Define parity bit, PARITY BIT: A parity bit is an extra bit transmitt...

PARITY BIT: A parity bit is an extra bit transmitted with data item select to give the resulting bit odd or even parity. For example an even parity data packet 10100001 has p

Secure clustering in WSNs, i have an idea of clustering in wsns . where eac...

i have an idea of clustering in wsns . where each and every sensor node use the reputation scheme and while clustering provide help against the selfishness atatck of the sensor nod

Pseudonymous remailers and cypherpunk remailers, Problem (a) As a fore...

Problem (a) As a forensic investigator, you are needed to trace the source of an email. It is suspected that the email header has been forged. Show how you would proceed to

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