Synchronizers minimize the delay problems of asynchronous logic by applying input clock pulses: a) to only the first and last stages of a circuit.
b) in no stages of the cicuit.
c) to each stage of the cicuit simultaneously.
d) to only the last stage of a circuit.

The ieee 802.11: defines standards for wireless local area network (wlan) communication protocols. identifies various computers or devices connected to a network. verifies any resource attached to another computer on a network that is different from the computer to which the user is logged on. connects multiple local area networks (lans) and wide area networks (wans).