required to complete this operational functionality?

A customer needs approximately 15 to 20 wireless APs for RF coverage. Given that the customer is going to use the 1010 lightweight AP with the advanced feature set, what other product is
required to complete this operational functionality?

A.
2700

B.
WLSE

C.
4124

D.
2006

Explanation:
Lightweight access points may be managed with Cisco wireless LAN controllers and the Cisco Wireless Control System (WCS). A Cisco Wireless Location Appliance may be added for advanced features such as wireless VoIP and location services, as well as advanced wireless security features such as Network Admission Control (NAC), the Cisco Self-Defending Network and guest access.
Autonomous access points may be configured with the CiscoWorks Wireless LAN Solution Engine (WLSE), or CiscoWorks Wireless LAN Solution Engine Express

http://www.cisco.com/en/US/products/ps6307/index.html :
Cisco 4100 Series Wireless LAN Controllers
Cisco Wireless LAN Controllers are responsible for system wide wireless LAN functions, such as security policies, intrusion prevention, RF management, quality of service (QoS), and mobility. They work in conjunction with Cisco 1000 Series Lightweight Access Points and the Cisco Wireless Control System (WCS) to support business-critical wireless applications. From voice and data services to location tracking, Cisco Wireless LAN Controllers provide the control, scalability, security, and reliability that network managers need to build secure, enterprise-scale wireless networks from branch offices to main campuses.
Cisco Wireless LAN Controllers smoothly integrate into existing enterprise networks. They communicate with Cisco 1000 Series Lightweight Access Points over any Layer 2 (Ethernet) or Layer 3 (IP) infrastructure using the Lightweight Access Point Protocol (LWAPP). These devices support automation of numerous WLAN configuration and management functions across all enterprise locations.
The Cisco 4100 Series Wireless LAN Controller is designed for medium-to-large enterprise facilities. Models that support 12, 24 or 36 access points are available. It also offers dual Gigabit Ethernet uplinks for high speed LAN connectivity with high network availability.
4124:NOTE: This product is no longer being sold and might not be supported.