Computer Networks - Physical and Data Link Layer
Given data bits
1011001 and even parity, what is the parity bit value?Given data bits 1011001 and even parity, what is the parity bit value?
medium📝 Analysis Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Count number of 1s in data
Data bits are 1 0 1 1 0 0 1; count 1s: 1+0+1+1+0+0+1 = 4 ones.Step 2: Determine parity bit for even parity
Since 4 is already even, parity bit must be 0 to keep even parity.Final Answer:
0 -> Option BQuick Check:
Even parity bit = 0 if 1s count even [OK]
Quick Trick: Parity bit makes total 1s even or odd [OK]
Common Mistakes:
MISTAKES- Miscounting number of 1s
- Choosing parity bit opposite to needed
- Ignoring parity bit when data already even
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