Choose the correct order for the following sequence in the context of OSI layers (from bottom to top)
A. Transforming the datagrams into frame for transmission
B. Transmission of bits over communication channel
C. Handling user interface
D. Control and monitoring of subnet
E. Transmission of data using either connection-oriented or connection-less protocol
Choose the correct answer from the options given below:

Explanation

From bottom to top, the relevant OSI layers are Physical, Data Link, Network, Transport and Application. 'Transmission of bits over the communication channel' (B) is the Physical layer's job, so it comes first. 'Transforming datagrams into frames' (A) is Data Link layer framing, placed next. 'Control and monitoring of the subnet' (D) is a Network layer responsibility (e.g. routing/congestion control), followed by 'transmission of data using a connection-oriented or connection-less protocol' (E), which is the Transport layer's job. 'Handling the user interface' (C) belongs to the Application layer at the top. So the bottom-to-top order is B A D E C.