Answer:
5 seconds
Explanation:
Given that :
Message size = 16kb
Packet size = 2kb
Speed = 4kbps
Number of links = 3
The time taken is calculated using the formula :
[Number of packets + (Number of links - 1)] * (packet size / speed)
Number of packets = message size / packet size
Number of packets = 16kb / 2 kb = 8
Hence,
[Number of packets + (Number of links - 1)] * (packet size / speed)
(8 + (3 - 1)) * (2 / 4)
(8 + 2) * (1 /2)
10 * 1/2
= 5 seconds
Answer:Presentation layer
Explanation: Presentation layer is the sixth layer belonging to the OSI model . It has the functionality of presenting the data or information in a standard and formatted way.The syntax is usually error free , well defined and adequate and thus also called as syntax layer. Presentation layer works between the application layer and the network layer.
It also performs the services of compression, encryption, decryption etc.
Answer: B) Shape is a base class, and circle and square are derived classes of Shape.
Explanation:
Shape is a base class because circle and squares are the shapes so these are the derived class of the shape, which is inherited by the shape like circle and square. As, the base class (shape) is the class which are derived from the other classes like circle and square and it facilitates other class which can simplified the code re-usability that is inherited from the base class. Base class is also known as parent class and the super class.
