9.3 Software Defined Networking Quiz

Which of the following is a disadvantage of software defined networking (SDN)? 1) SDN standards are still being developed 2) SDN facilitates communication between hardware from different vendors 3) SDN gathers network information and statistics 4) SDN creates centralized management

1) SDN standards are still being developed

Software defined networking (SDN) uses a controller to manage devices. The controller is able to inventory hardware components on 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 widespread configuration changes on just one device. Which of the following best describes an SDN controller? 1) The SDN controller is software 2) The SDN controller is a networking protocol 3) The SDN controller is a virtual networking device 4) The SDN controller is hardware

1) The SDN controller is software

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.) 1) This layer receives its requests from the Application Layer 2) This layer is also known as the Infrastructure Layer 3) This layer communicates with the Control layer through what is called the northbound interface 4) This layer provides the Physical layer with configuration and instructions 5) On this layer, individual networking devices use southbound APIs to communicate with the control plane - Control Layer - Physical Layer - Application Layer

1) This layer receives its requests from the Application Layer - Control Layer 2) This layer is also known as the Infrastructure Layer - Physical Layer 3) This layer communicates with the Control layer through what is called the northbound interface - Application Layer 4) This layer provides the Physical layer with configuration and instructions - Control Layer 5) On this layer, individual networking devices use southbound APIs to communicate with the control plane - Physical Layer

Which of the following is an advantage of software-defined networking (SDN)? 1) Lack of vendor support 2) More granular control 3) Standards are still being developed 4) Is currently a new technology

2) More granular support

Which of the following does the Application layer use to communicate with the Control layer? 1) These layers do not communicate 2) Controllers 3) Northbound APIs 4) Southbound APIs

3) Northbound APIs

Which of the following BEST describes the Physical SDN layer? 1) Receives its requests from the Application Layer 2) Sometimes called northbound APIs 3) Gives new life to old networking hardware 4) Also known as the Infrastructure Layer

4) Also known as the Infrastructure Layer

Which of the following BEST describes the Application SDN layer? 1) Communicates with the Control layer through the southbound interface. 2) Receives its requests and then provides configuration and instructions. 3) Is software that is able to inventory hardware components in the network. 4) Communicates with the Control layer through the northbound interface.

4) Communicates with the Control layer through the northbound interface.

Which SDN layer would a load balancer that stops and starts VMs as resource use increases reside on?

Application

Network engineers have the option of using software to configure and control the network rather than relying on individual static configuration files that are located on each network device. What 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 (SDN)

Which APIs do individual networking devices use to communicate with the control plane from the Physical layer?

Southbound