What are two advantages of controller-based networks versus traditional networks? (Choose two.)

Which three elements help network designers to construct secure systems that protect information and resources (such as devices, communication, and data) from unauthorized access, modification, inspection, or destruction? (Choose three.)

An existing wireless network was designed to support data traffic only. You must now install context Aware services for location tracking changes must be applied to the existing wireless network to increase the location accuracy? (Chose two)

Company XYZ has 30 sites using MPLS L3 VPN and the company is now concerned about data integrity. The company wants to redesign the security aspect of their network based on these requirements:
* Securely transfer the corporate data over the private WAN
* Use a centralized configuration model.
* Minimize overhead on the tunneled traffic.
Which technology can be used in the new design to meet the company's requirements?

Company XYZ is designing their network using the three-layer hierarchical model. At which layer must the QoS design classify or mark the traffic?