Computer Networking
Alice is setting up a small network in her home so that she can study for her MCSE exams. She doesn't have a lot of money to spend on hardware, so she wants to use a network topology that requires the least amount of hardware possible. Which topology should she select?

Ethernet
Star
Right
Bus
Token-Ring

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Computer Networking
X.21 is

a method of determining which device has access to the transmission medium at any time
a method access control technique for multiple-access transmission media
a very common bit-oriented data link protocol issued by ISO
None of these
network access standard for connecting stations to a circuit-switched network

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