Card 181
Question
Error detection
Answer
use a parity bit or CRC
Networking test 2
Discover Networking test 2: 222 flashcards with questions and answers.
- Subject
- No category / Others
- Language of creation
- English
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Cards in this set
Card 182
Question
parity bit
Answer
did you count an even number of 1 bits?
Card 183
Question
CRC
Answer
Integreate Cyclic Redundancy Check"Did you compute all 0's when dividing with CRC appended to the data?"
Card 184
Question
Two types of correction
Answer
Backward and Forward
Card 185
Question
Backward Error correction
Answer
Retransmit
Card 186
Question
Forward error correction
Answer
auto- recover damaged bits
Card 187
Question
Data Link layer coordinates media to be shared among the network devices using
Answer
the broadcast media
Card 188
Question
What is the goal of every MAC protocol
Answer
Don't collide
Card 189
Question
MAC
Answer
media access control
Card 190
Question
A MAC runs constantly at
Answer
every similar NIC
Card 191
Question
Three broad classes of MAC addresses
Answer
Channel partitioning, random access,taking turns
Card 192
Question
Channel Partitioning
Answer
divides channel into smaller pieces(time slots, frequency, code), allocate piece to node fro exclusive use
Card 193
Question
Random Access
Answer
Cnanel not divided, allows collisions, recover from collisisons
Card 194
Question
Taking turns
Answer
nodes take turns, but nodes with more to send can take longer turns
Card 195
Question
TDMA
Answer
MAC with channel partitioning, Time Division multiple access - each node gets assigned a time slot and a fixed duration, unused slots go idle
Card 196
Question
FDMA
Answer
MAC with channel partitioning, Frequency Division multiple access. Each node gets frequency channel, unused channels go idle
Card 197
Question
ALOHA
Answer
MAC with random partitioning, like TDMA but any node can transmit within a time slot
Card 198
Question
Slotted aloha
Answer
MAC with random partitioning, if a node has a successful Tx, it can keep going
Card 199
Question
CSMA
Answer
MAC with random partitioning, any node can transmit in an idle channel
Card 200
Question
CSMA with collision detection
Answer
Like CSMA but, if a collision is detected, stops transmitting. No fragmenttation, the node gets a randomly assigned time out before it can try again
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