Networking
Spot it
Spot the Error: Finding the Network Address
Can you spot the mistake in this network address working?
Quick check · tap an answer to continue
Lesson notes
Key points
- A /27 mask is 255.255.255.224, so block size is 256 − 224 = 32.
- Blocks are 0, 32, 64, 96, so 77 sits in the 96 block.
- Network address is 192.168.10.64.
- Broadcast address is 192.168.10.95.
Takeaway: Pick the largest block multiple not exceeding the host value.
Quick check: Which step is wrong?
- Step 1
- Step 2
- Step 3
77 is below 96, so it belongs to the block starting at 64, not 96.
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