Which of the following wireless networking standards operates at only 5GHz?

By default File History keeps saved versions until space is needed

Indicate whether the statement is true or false

Which is true about the CSMA/CD media access method?

A. collisions can't be detected so they are avoided B. the hidden node problem makes it unsuitable for wireless networks C. all stations wait a random amount of time after the medium is clear D. it uses frame acknowledgement