A Wireless Local Area Network (WLAN) is a type of local area network that uses high-frequency radio waves to communicate and transmit data, providing wireless connectivity within a limited geographic area like an office building, home, or library. The scenario describes patrons using mobile devices to connect to the internet within a library, which is the primary use case for a WLAN. This network infrastructure, commonly known as Wi-Fi, is based on the IEEE 802.11 standards and allows multiple users to access network resources without physical cables.

A. SAN: A Storage Area Network is a dedicated, high-speed network for connecting servers to storage devices, not for providing general internet access to end-users.

B. MAN: A Metropolitan Area Network covers a large geographic area like a city or a large campus, which is a much larger scale than a single library building.

C. PAN: A Personal Area Network connects devices within an individual's immediate workspace, typically using technologies like Bluetooth, not a building-wide access network.

1. Kurose

J. F.

& Ross

K. W. (2021). Computer Networking: A Top-Down Approach (8th ed.). Pearson. In Section 1.3.1

the text describes wireless LANs (based on IEEE 802.11 technology) as a prevalent access network technology in "universities

business offices

cafes

airports

homes

and... libraries."

2. IEEE Computer Society. (2021). IEEE Standard for Information Technology--Telecommunications and information exchange between systems Local and metropolitan area networks--Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications (IEEE Std 802.11™-2020). The standard's scope (Section 1.1) defines its purpose as providing "wireless connectivity for fixed

portable

and moving stations within a local area."

3. Cisco. (n.d.). What Is a WLAN (Wireless Local Area Network)? Cisco.com. Retrieved from Cisco's official documentation

which defines a WLAN as "a wireless computer network that links two or more devices using wireless communication to form a local area network (LAN) within a limited area such as a home

school

computer laboratory

campus

or office building."

4. Forouzan

B. A. (2013). Data Communications and Networking (5th ed.). McGraw-Hill. In Chapter 1

Section 1.3

the text distinguishes between network types

defining a LAN as being "usually privately owned and links the devices in a single office

building

or campus

" with WLAN being its wireless variant. It defines a MAN as covering an "entire city."