Question 1
Which of the following functionalities must be implemented by a transport protocol over and above the network protocol ?
Recovery from packet losses
Detection of duplicate packets
Packet delivery in the correct order
End to end connectivity
Question 2
In the following pairs of OSI protocol layer/sub-layer and its functionality, the INCORRECT pair is
Network layer and Routing
Data Link Layer and Bit synchronization
Transport layer and End-to-end process communication
Medium Access Control sub-layer and Channel sharing
Question 3
Identify the ONE CORRECT matching between the OSI layers and their corresponding functionalities as shown.
OSI Layer | Functionalities |
|---|---|
(a) Network Layer | (I) Packet routing |
(b) Transport Layer | (II) Framing and error handling |
(c) Datalink Layer | (III) Host to host communication |
(a)-(I), (b)-(II), (c)-(III)
(a)-(I), (b)-(III), (c)-(II)
(a)-(II), (b)-(I), (c)-(III)
(a)-(III), (b)-(II), (c)-(I)
Question 4
The protocol data unit (PDU) for the application layer in the Internet stack is
Segment
Datagram
Message
Frame
There are 4 questions to complete.