6.15

Drag the software-defined networking (SDN) layer on the left to the appropriate function on the right. (Each SDN layer may be used once, more than once, or not at all.) This layer receives it requests from the application layer. This layer is also known as the infrastructure layer. This layer communicates with the control layer through what's called the northbound interface. This layer provides the physical layer with configuration and instructions. On this layer, individual networking devices use southbound APIs to communicate with the control plane.

Control layer Physical layer Application layer Control layer Physical layer

Which of the following is a disadvantage of software-defined networking (SDN)?

SDN standards are still being developed

Network engineers have the option of using software to configure and intelligently control the network rather than relying on the individual static configuration files that are located on each network device. Which of the following is a relatively new technology that allows network and security professionals to use software to manage, control, and make changes to a network?

Software-defined networking

Software-defined networking (SDN) uses a controller to manage the devices. The controller is able to inventory hardware components in the network, gather network statistics, make routing decisions based on gathered data, and facilitate communication between devices from different vendors. It can also be used to make wide-spread configuration changes on just one device. Which of the following best describes an SDN controller?

The SDN controller is software

You have opted to use software-defined networking (SDN) to manage, control, and make changes to your network. You want to be able to use software to configure and intelligently control the network, rather than relying on the individual static configuration files that are located on each network device. SDN consists of three layers; -Application layer -Control layer -Physical layer Which of the following describes what the SDN control layer does to neetworking devices that comprise the physical layer?

The control layer removes the control plane from networking devices and creates a single control plane.