Ethernet Wi-Fi Detail

< CS101

Wi-Fi/Ethernet LAN Strategy

Wi-Fi Picture

Wi-Fi Broadcast

Ethernet/Wi-Fi Scenarios

Theme: Shared!

1. Busy LAN

2. Corruption

3. Bad Guy

Megabits Math

Networking Math

Solutions:

Q1 1 megabyte is 8 million bits
 How many times per second can we send 8 million bits?
 100 million bits-per-sec / 8 million bits
 100 / 8 = 12.5
 12.5 MB per sec
 In reality less due to overhead


Q2 1500 bytes is 12000 bits
 12000 / 100 million is 0.00012 seconds
 This packet ties up the wire very briefly!


Q3: We have 12.5 MB per second from Q1,
 so 38 / 12.5 = about 3 seconds