What is another name for an unmanaged switch?

Fast Ethernet

Gigabit

Plug and play

Trunk

The answer is "Plug and play".

Explanation:

A switch with minimum debugging tools for log-and-play simplicity and also no IP address. The Unmanaged switches are cost-effective and also have limited power, and other choices are not correct, which can be described as follows:

Fast Ethernet provides 10 to 100 Mbps speeds, that's why it is not correct. Gigabit provides bandwidth, which is up to 1 Gbps speed, and it is 10 times faster than Ethernet Fast, that's why it is wrong. The trunk provides the link design that's why it is not correct.