10.3.4 Practice Questions Flashcards
Question 1.
Which of the following is an advantage of Software Defined Networking (SDN)?
answer
It’s currently a new technology.
Standards are still being developed.
It lacks vendor support.
More granular control.
Correct Answer:
More granular control.
Question 2.
Which of the following BEST describes the Application SDN layer?
answer
-Communicates with the Control layer through the Southbound Interface.
-Communicates with the Control layer through the Northbound Interface.
-Receives requests and then provides configuration and instructions.
-Is software that is able to inventory hardware components in the network
Correct Answer:
Communicates with the Control layer through the Northbound Interface.
Question 3.
Which SDN layer would a load balancer that stops and starts VMs as resource use increases reside on?
Answer
Application
Control
Physical
Session
Correct Answer:
Application
Question 4.
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?
Answer
The SDN controller is hardware.
The SDN controller is a networking protocol.
The SDN controller is software…
The SDN controller is a virtual networking device.
Correct Answer:
The SDN controller is software…
Question 5.
Keyboard Instructions
Match the software defined networking (SDN) layer on Group A to the appropriate function on Group B.
(Each SDN layer may be used once, more than once, or not at all.)
Group A
Application layer
Control layer:
Physical layer:
Group B
This layer receives its requests from the Application layer.
This layer is also known as the Infrastructure layer.
This layer communicates with the Control layer through what is 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.
This layer receives its requests from the Application layer.
Control layer
Correct Answer:
This layer is also known as the Infrastructure layer.
Physical layer
Correct Answer:
This layer communicates with the Control layer through what is called the northbound interface.
Application layer
Correct Answer:
This layer provides the Physical layer with configuration and instructions.
Control layer
Correct Answer:
On this layer, individual networking devices use southbound APIs to communicate with the control plane.
Physical layer
Question 6.
Which of the following does the Application layer use to communicate with the Control layer?
Answer
Controllers
Southbound APIs
Northbound APIs
These layers do not communicate
Correct Answer:
Northbound APIs
Question 7.
Which of the following BEST describes the Physical SDN layer?
Answer
Sometimes called Northbound APIs.
Also known as the Infrastructure layer.
Gives new life to old networking hardware.
Receives its requests from the Application layer.
Correct Answer:
Also known as the Infrastructure layer.
Question 8.
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.
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?
answer
Load balancing software
Software Defined Networking (SDN)
Infrastructure software networking
Control layer networking
Correct Answer:
Software Defined Networking (SDN)
Question 9.
Which APIs do individual networking devices use to communicate with the control plane from the Physical layer?
answer
Southbound
Northbound
Northbound and Southbound
None
Correct Answer:
Southbound
Question 10.
Which of the following is a disadvantage of Software Defined Networking (SDN)?
answer
SDN creates centralized management.
SDN facilitates communication between hardware from different vendors.
SDN gathers network information and statistics.
SDN standards are still being developed.
Correct Answer:
SDN standards are still being developed.
