The correct answer is: D. wireless application protocol (WAP)
WAP is a set of communication protocols that enable wireless devices to access and display information from the Internet. It was developed by the WAP Forum, which was later renamed the Open Mobile Alliance (OMA).
WAP is based on the Hypertext Transfer Protocol (HTTP), which is the standard protocol for accessing web pages on the Internet. However, WAP uses a different encoding scheme and a different set of commands than HTTP. This is necessary because wireless devices have limited processing power and memory, and they cannot handle the full complexity of HTTP.
WAP is used by a variety of wireless devices, including mobile phones, smartphones, and PDAs. It allows users to access email, browse the web, and use other Internet-based services.
Here is a brief explanation of each option:
- A. real-time location system (RTLS): RTLS is a system that tracks the location of objects in real time. It uses a variety of technologies, including radio frequency identification (RFID), Bluetooth, and Wi-Fi. RTLS is used in a variety of applications, including asset tracking, inventory management, and people tracking.
- B. wireless wide area network (WWAN): WWAN is a type of wireless network that covers a large area, such as a city or a country. WWAN networks are typically used for mobile data services, such as cellular phone service and mobile Internet access. WWAN networks can be based on a variety of technologies, including cellular, satellite, and microwave.
- C. wireless local area network (WLAN): WLAN is a type of wireless network that covers a small area, such as a home or an office. WLAN networks are typically used for Internet access, file sharing, and printer sharing. WLAN networks can be based on a variety of technologies, including Wi-Fi and Bluetooth.