48. With CSMA/CD, a. computers wait until the circuit is free before they send data b. the server or front end processor works consecutively through a list of clients to determine who should have access to the media- c. the front end processor must wait for a response from the polled client or terminale d. one computer starts the poll and passes it to the next computer on the multipoint circuit- e. there is never a chance for "collision," or two computers trying to send data at the same time e 49. What wireless connectivity technology enables exchange of data over a few inches of space between two devices? a. microwave transmission b. wireless meshe c. near field communication (NFC) d. Wi-Fie e. blue tooth 50. Pauline is coding a Web page using HTML. What can she use to place a photo, graphic, audio file, or movie on a Web page? a. server-side programming b. a CSS file c. a hyperlink d. a tag enclosed in angle brackets- e. none of the above- ttttt