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Course: Computers and the Internet > Unit 3

Lesson 4: Routing with redundancy
Computing
Computers and the Internet
The Internet
Routing with redundancy
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Redundancy and fault tolerance

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Problem

A group of organizers are putting together a conference called DevFest and want to make sure the Internet connection will be reliable. They partner with two Internet providers, Komkastic and SupaSonic.
This diagram illustrates their connection to the Internet:
Each circle is a router, each line is a connection, and the lines with arrows indicate connections to further routers on the Internet.
Unfortunately, this network is not fault tolerant: there's still a single point of failure.
Which router needs to stay available for DevFest to have a working connection to the Internet?
Choose 1 answer:
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Redundancy and fault tolerance