Header - Synchronization, packet number, protocol, destination IP address, originating IP address. Message - The data being transmitted. Footer - Error control and Parity Check.
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What is Serial transmission?
Data transmitted by sending a bit one after the other in order.
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What is Parallel transmission?
Data transmitted by sending several bits once via independent tracks.
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What is the Simplex Mode of Transmission?
Where data can only be sent in one direction. Hence, only one device can speak, and only one can hear.
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What is the Duplex Mode of Transmission?
Where data can be sent bidirectionally. Both devices can speak and listen at the same time.
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What is the Half-Duplex Mode of Transmission?
Where data can be sent bidirectionally, but only one direction at a time. Devices must take turns speaking and hearing.
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What is Multiplexing?
Where independant data sources are combined and are sent along a single route to a single destination. Several data streams can be transmitted over the same entwined series of wires.
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What is Circuit Switching?
Where a link across the network is set up in advance, and packets are sent in consequential order. Once this connection is established, no other device may use the circuit until it's free, making improper use of bandwidth. Connection is not resilient
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What is Packet Switching?
Where packets independently take routes towards their destination, taking into account several factors, such as avaliability, cost, hop count, and how heavy the load is. Packets may not arrive in order, so they are reassembled at the destination.
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What is Data Collision?
Data collission is where two sets of data are detected simultaneously. The two packets are discarded when detected, and the devices both wait a separate short and random time interval before trying again.
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What is Bandwidth?
Bandwidth is the measure of how much data can be fitted onto a cable at once. High bandwidth means more data can be sent at once, NOT that data is transferred more quickly. The speed of a packet is the speed of electricity, or light in optical cables
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What is Bit Rate?
Bit Rate is another way of expressing bandwidth, and is used to describe data transfer requirements. High bit rate connections are needed when large amounts of data must be sent in a short period of time. Video Conferencing is an example of this.
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Other cards in this set
Card 2
Front
What is Serial transmission?
Back
Data transmitted by sending a bit one after the other in order.
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