PC-PT HOST C 20.255.0.7 MAC PPPP Network ID 20.0.0.0/8 20.255.0.6 Network ID 200.100.10.0/30 200.100.10.2 200.100.10.1 Fa0/1/0 MAC AAAA MAC KKKK Fa0/1 Fa0/0 1841 25.0.0.7 MAC GGGG Router1 Network ID 25.0.0.0/8 PC-PT HOST A 25.0.0.89 MAC DDDD MAC NNNN Fa0/0 1841 Router2 129.60.5.45 Fa0/1 MAC SSSS Eth0/1 MAC JJJJ Network ID 129.60.0.0/16 Bridge-P Bridge0 Eth1/1 MAC HHHH PC-PT HOST B 129.60.5.47 MAC MMMM

Systems Architecture
7th Edition
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Stephen D. Burd
Chapter13: Internet And Distributed Application Services
Section: Chapter Questions
Problem 15VE
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Question
  1. Challenge: Assume that the assigned network addresses are correct. Can you deduce (guess) what the network subnet masks are?  Explain while providing subnet mask bits for each subnet mask.

 [Hint:  Look at the addresses in binary and consider the host ids]

PC-PT
HOST C
20.255.0.7
MAC PPPP
Network ID
20.0.0.0/8
20.255.0.6
Network ID
200.100.10.0/30
200.100.10.2
200.100.10.1
Fa0/1/0 MAC AAAA
MAC KKKK
Fa0/1
Fa0/0
1841
25.0.0.7
MAC GGGG
Router1
Network ID
25.0.0.0/8
PC-PT
HOST A
25.0.0.89
MAC DDDD
MAC NNNN
Fa0/0
1841
Router2
129.60.5.45
Fa0/1
MAC SSSS
Eth0/1 MAC JJJJ
Network ID
129.60.0.0/16
Bridge-P
Bridge0
Eth1/1 MAC HHHH
PC-PT
HOST B
129.60.5.47
MAC MMMM
Transcribed Image Text:PC-PT HOST C 20.255.0.7 MAC PPPP Network ID 20.0.0.0/8 20.255.0.6 Network ID 200.100.10.0/30 200.100.10.2 200.100.10.1 Fa0/1/0 MAC AAAA MAC KKKK Fa0/1 Fa0/0 1841 25.0.0.7 MAC GGGG Router1 Network ID 25.0.0.0/8 PC-PT HOST A 25.0.0.89 MAC DDDD MAC NNNN Fa0/0 1841 Router2 129.60.5.45 Fa0/1 MAC SSSS Eth0/1 MAC JJJJ Network ID 129.60.0.0/16 Bridge-P Bridge0 Eth1/1 MAC HHHH PC-PT HOST B 129.60.5.47 MAC MMMM
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