Answer and Explanation:
Messages flow across an SDN controller's:
Northbound APIs:
• Messages which help in read/write state of the network and developing flow tables within the
state management layer.
• Notifications for the state-change events.
• The interaction between the controller and network control applications is done through the
northbound interface.
• Network control applications send messages to the controller.
Southbound APIs:
• Messages which help for the up-to-date view of the network's state like message for the
attached link has gone up or down, new devices are joined the network, or indications of the
device is up or down.
• Controller's southbound interface is the communication among the controller and the controlled
devices. Controlled devices are the recipients of the messages sent form the controller.
Answer:
Explanation:
Joist mansory building is a type of building with the exterior wall of mansory, which is capable of withstanding combustion or fire for nothing less than an hour.
Therefore, the best method to deal with fire is to build with materials that are fire resistant.
The correct answer is D, Draw conclusions and make decisions for their business based on the research results.
Answer:
In centralized method, the authorized sender is known, but the transmission line is dominated by the control station, while in decentralized method, one station can not dominate the line but collision on the transmission line may occur.
Explanation:
Centralized method of communication requires for a control station to manage the activities if other stations in the network. It assigns turns to one known station at a time, for transmission.
Decentralized method allows stations in a network to negotiate and take turns in transmitting data. When a station is done with the transmission line, another station on the queue immediately claims the line.
Answer:
<u>Explanation:</u>
An input statement using the input function at the shell prompt is as follows:
If a prompt asks for a input, a number is to be added
num = input ('Number: ')
num = num + 1
print(num)
Explanation of results: This gives error at line num= num + 1 as cannot convert int object to str implicitly
