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Authors:
James F. Kurose, Keith W. Ross
Chapter:
The Link Layer: Links,access Networks, And Lans
Exercise:
Problems
Question:24 | ISBN:9780132856201 | Edition: 6

Question

Suppose the three departmental switches in Figure 5.15 are replaced by hubs. All links are 100 Mbps. Now answer the questions posed in problem P23.

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Answer

If the switch is replaced with a hub the the network as follows:

  • Each departmental hub performances as a single collision domain.
  • From given data, the capacity of each link=100 Mbps. So, all hub maximum throughput of 100 Mbps.
  • The network links are connecting the  web servers and the mail server
  • Totally 5 devices used that are he three collision domains, web server and mail server with maximum rate of 100 Mbps.
  • Thus, the total aggregate throughput: (5100)= 500 Mbps that is, and it can be achieved among the 11 end systems.
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