Flashcards
CS - Chapter 9
Cards in this deck (19)
- 1Data TransmissionMovement of data from one place to another.
- 2Serial Data TransmissionSingle Bits are sent along one wire.
- 3Parallel Data TransmissionBits are sent down several wires simultaneously.
- 4Uses of Serial and Parallel transmissionSerial: Long distance communication, Easy to maintain, Cheaper.
Parallel: Short distance communication, Faster bit-rate than serial. - 5Bit RateThe number of bits transmitted per second.
- 6Baud RateThe rate at which signals on a wire or line may change.
- 7BandwidthA measure of how fast the data may be transmitted over the transmission medium.
- 8LatencyThe time delay that occurs when transmitting data between devices.
- 9Synchronous Data TransmissionUsing the system clock, the computer sending the data will control the transmission rate. Once synchronized, the two devices can send a receive data without need for further intervention.
- 10Asynchronous Data TransmissionThe start bit causes the receiver to synchronize its clock to the same rate as the sender. Both devices agree on how many bits of data will follow. The stop but indicated the data has arrived.
- 11ProtocolA set of pre-agreed signals or codes for communication between computers.
- 12Bus NetworkAll computers are attached to one main cable. Each computer has its own unique MAC address.
- 13Pros Of A Bus NetworkPros: Can segment it to reduce the number of collisions, Cheaper than a star network, Easy to add new devices to the network.
- 14Cons Of A Bus NetworkCollisions are likely to occur, Only one stream of communication can occur at one time, If the bus breaks the network fails, Less secure than a star network.
- 15Star NetworkCentral switch which all computers communicate with. Central switch queues frames until each frame can be placed onto the backbone (no collisions). If there are n cables, there are n cables.
- 16Pros Of A Star NetworkNo collisions, High connection speed, If one computer crashed the network wont fail.
- 17Cons Of A Star NetworkCentral switch server is expensive to buy/install, Server can get congested with all the communication passing, As there are n cables it can get quite costly.
- 18Client-Server NetworkOne computer has the main processing power and storage and the other computers act as clients requesting services from the server.
- 19Peer-To-Peer NetworkA network that has no dedicated servers. All computers are equal, therefore they're called peers.
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- AS level Computing Flashcards on CS - Chapter 9, created by Josh Dawson on 29/03/2017.
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- Josh Dawson
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