Which of the following appliances provides users with an extended footprint that allows connections from multiple devices within a designated WLAN?

An Access Point (AP) is a networking device whose primary function is to create a Wireless Local Area Network (WLAN). It acts as a central transmitter and receiver of wireless radio signals, establishing a coverage area, or "footprint." Multiple wireless-enabled devices, such as laptops, smartphones, and tablets, can connect to the AP simultaneously, which in turn connects them to the broader wired network. This directly matches the description of an appliance that provides an extended footprint for multiple device connections within a WLAN.

A. Router: A router's primary function is to forward data packets between different computer networks, not to create a wireless access area, though this is a common integrated feature.

B. Switch: A switch is a device that connects multiple devices on a wired network, forwarding data at the Data Link layer to specific destinations.

D. Firewall: A firewall is a network security device that monitors and filters incoming and outgoing network traffic based on an organization's security policies.

1. Kurose

J. F.

& Ross

K. W. (2021). Computer Networking: A Top-Down Approach (8th ed.). Pearson. In Chapter 6

Section 6.3.1

"802.11 Architecture

" the text defines the role of the Access Point (AP) within a Basic Service Set (BSS) as the central device that wireless stations associate with to connect to the network and communicate with the distribution system (the wired LAN).

2. Cisco. (n.d.). What Is a Wireless Access Point? Cisco. Retrieved from the official Cisco website. The document states

"a wireless access point (WAP or AP) is a networking device that allows wireless-capable devices to connect to a wired network... An access point is a separate device that connects to a router via an Ethernet cable and creates a new wireless network." This confirms the AP's role in creating the WLAN footprint.

3. Tanenbaum

A. S.

& Wetherall

D. J. (2011). Computer Networks (5th ed.). Prentice Hall. In Chapter 4

"The Medium Access Control Sublayer

" Section 4.3.3

"802.11 Architecture and Protocol Stack

" the role of an access point is described as being analogous to a base station in a cellular network

providing the connection point for all wireless stations in its cell (or footprint) to the wired network.