Term
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Definition
| responsible for moving messages from one device to another |
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Term
| functions of data link layer protocols |
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Definition
media access control
error control
message delineation |
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Term
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Definition
media access control
-controls when and what computer transmits |
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Term
| point to point half duplex |
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Definition
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Term
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Definition
| no computers can transmit data at the same time |
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Term
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Definition
-type of MAC
-acts like a stop light |
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Term
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Definition
-type of MAC
-transmits whenever the circuit is free
-used in Ethernet LANs |
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Term
| categories of network errors |
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Definition
corrupted (changed data)
lost data (data that cannot be found) |
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Term
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Definition
line outages
white noice
impulse noise
cross-talk
echo
attenuation
intermodulation noise
harmonic distortion |
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Term
| functions of error control |
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Definition
prevention
detection
correction |
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Term
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Definition
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Term
| error detection techniques |
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Definition
parity checks
checksum
cyclic redundancy check (CRC) |
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Term
| error correction techniques |
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Definition
retransmission
forward error correction |
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Term
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Definition
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Term
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Definition
-half duplex
-message is sent, waits for acknowledgment, sends next message |
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Term
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Definition
-full duplex
-sender sends packets without waiting for receiver to acknowledge |
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Term
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Definition
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Term
| asynchronous file transfer |
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Definition
-point to point asynchronous circuits
-phone lines via modem
- computer to computer for transfer of data files |
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Term
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Definition
| data sent in a large block |
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Term
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Definition
| synchronous data link control |
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Term
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Definition
high level data link control
longer address and control fields, larger sliding window size |
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Term
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Definition
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Term
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Definition
ICC 802.3
most widely used LAN protocol
uses contention MAC
error correction is optional |
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Term
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Definition
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Term
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Definition
| move as many bits as possible with minimum errors |
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Term
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Definition
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Term
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Definition
| transmission rate of information bits |
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