Correct Answer: C
Explanation/Reference: Lightweight APs (LAPs) is devices require no initial configuration. LAPs use the Lightweight Access Point Protocol (LWAPP) to communicate with a WLAN controller (WLC), as shown in the below figure. Controller-based APs are useful in situations where many APs are required in the network. As more APs are added, each AP is automatically configured and managed by the WLC.
Ref: Defining LWAPP (Cisco Wireless LAN Controllers) - what-when-how.com
“...
LWAPP is a way for an AP to communicate directly with a management entity—the WLC.
...”
A. register with a single access point that controls traffic between wired and wireless endpoints
A WLC is used to configure and manage one or more APs. It doesn’t control traffic between the wireless and wired part of a network, it controls APs.
Wrong answer.
B. use SSIDs to distinguish between wireless clients
On the contrary, SSIDs are used by wireless clients to distinguish among different wireless LANs and decide which one to associate with.
Wrong answer.
C. send LWAPP packets to access points
Correct answer.
D. monitor activity on wireless and wired LANs
A WLC doesn’t monitor data traffic or device behaviour. A WLC is used to MANAGE one or more APs.
Wrong answer.
C is correct -- WLCs communicate and manage APs by sending them LWAPP packets.
"Wireless LAN Controllers (WLC) govern a collection of Lightweight Access Points (APs)."
"Light Weight Access Point Protocol (LWAPP) defines the network protocol between the APs and WLC."
Reference: https://aristanetworks.force.com/AristaCommunity/s/article/how-to-integrate-cisco-wireless-lan-controller-with-cloudvision-wifi
A sounds like it is describing a device that is a client of an AP. Definitely not a WLC.
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B is wrong since SSIDs distinguish between different WLANs, not individual clients.
"SSID is short for service set identifier. In layman’s terms, an SSID is the name for a Wi-Fi network."
Reference: https://www.webopedia.com/definitions/ssid/
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D is incorrect because a WLC does not monitor traffic on wired LANs; it only monitors wireless activity.
"A wireless LAN controller (WLC) is a network component that manages wireless network access points and allows wireless devices to connect to the network."
"It offers central control over network elements, increases network visibility, and greatly simplifies individual component monitoring."
Reference: https://www.manageengine.com/network-monitoring/wlc-monitoring.html
I agree with everyone C is correct because LWAPP is used by WLAN Controllers to send packets to LAPs. Like how CAPWAP functions but except it's sent to WLCs
weird qquestion. isn't it also Standalone AP function to use SSID to distinguish between wireless clients? So if Standalone AP can do it why it would be meant about WLC?
In this case C is correct - LWAPP is one of the functions of a WLC, it is a means to communicate with the AP's
In this case B is not correct, because WLC does not use SSID to distinguish between wireless clients, it uses SSID to distinguish between wireless lans
just have to read the questions carefully and understand the concepts
Correct Answer: C
Explanation/Reference: Lightweight APs (LAPs) is devices require no initial configuration. LAPs use the Lightweight Access Point Protocol (LWAPP) to communicate with a WLAN controller (WLC). Controller-based APs are useful in situations where many APs are required in the network. As more APs are added, each AP is automatically configured and managed by the WLC.
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