Consider an enterprise network with two Ethernet segments, a web server and a…
2022
Consider an enterprise network with two Ethernet segments, a web server and a firewall, connected via three routers as shown below.
What is the number of subnets inside the enterprise network?
Answer: C. 6 — Key insight: count every internal Layer-2 broadcast domain (Ethernet LAN) and each internal point-to-point link between routers or devices. Left Ethernet LAN…
- A.
3
- B.
12
- C.
6
- D.
8
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Correct answer: C
Key insight: count every internal Layer-2 broadcast domain (Ethernet LAN) and each internal point-to-point link between routers or devices.
Left Ethernet LAN (the left group of hosts)
Right Ethernet LAN (the right group of hosts)
Link between the left router and the firewall
Link between the firewall and the central router
Link between the central router and the right router
Link between the central router and the web server
Therefore the number of subnets inside the enterprise network is 6.
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