________ include the names of a field, a control on a form or report, or the properties of the fields or controls

A user wants to quickly share pictures between mobile devices. The devices will be in close proximity so the necessity of a third party service and/or another networking device is not required. Which of the following is the BEST option for this scenario?

A. NFC B. USB C. IR D. WiFi

As condition variables contain_________ , condition variables provide acquire and release methods.

a) underlying semaphores. b) underlying locks. c) threads. d) None of the above.