Flashcards
MAC Sub-Layer
Cards in this deck (8)
- 1What are the three basic approaches used to arbitrate access to a shared medium?Controlled access protocols, Random access protocols and Channelisation protocols
- 2List the three main types of channelisation?Frequency Division Multiple Access, Time Division Multiple Access and Code Division Multiplexing
- 3Explain polling?Polling uses a centralised controller which cycles through stations on the network and gives each an opportunity to transmit a packet
- 4How are tokens used to control network access?In a token passing system, when no station has any packets to send the token circulates. When a station captures the token, it sends its data, and when transmission is completed it releases the token
- 5What does CSMA/CD stand for?Carrier Sense Multi-Access with Collision Detection
- 6Explain CSMA/CDCarrier Sense - Requires each station to to detect whether someone is already transmitting before transmitting
Multiple Access - Allows multiple hosts to make use of common media
Collision Detection - A collision can occur if two stations wait for transmission stop and both start transmitting - 7What is binary exponential backoff?Doubling the range of the random delay after each collison
- 8Why does CSMA/CD use a random delay?Randomisation is used to avoid having multiple stations transmit at the same time
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- Bachelors Degree Computer Networking (Network Technologies) Flashcards on MAC Sub-Layer, created by Charlie Tizzard Ó Kevlahan on 04/06/2016.
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- Charlie Tizzard Ó Kevlahan
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