Which modulation technique used by 802.11a has four possible changes in the starting point of the wave, allowing it to transmit 1 bits per symbol?

Select the correct answer. a company wants to use online methods to target more customers. it decides to conduct a market research by collecting the data of a few customers with their consent. they want to track data of the sites that their customers frequently visit. which software can the company? a. spyware b. bots c. adware d. trojan horse e. rootkits