Data communication interview questions

41. What is Protocol and Standards ?
Standards form the fundamental building blocks for product development by establishing consistent protocols that can be universally understood and adopted. This helps fuel compatibility and interoperability and simplifies product development, and speeds time-to-market.

42. What are the different layers in OSI Model ?
The 7 Layers of the OSI
Layer 7 – Application.
Layer 6 – Presentation.
Layer 5 – Session.
Layer 4 – Transport.
Layer 3 – Network.
Layer 2 – Data Link.
Layer 1 – Physical.

43. What is Time Division Multiplexing ?
Time-division multiplexing (TDM) is a method of transmitting and receiving independent signals over a common signal path by means of synchronized switches at each end of the transmission line so that each signal appears on the line only a fraction of time in an alternating pattern.

44. What is meant by linear Block Code ?
A linear block code is a block code in which the exclusive-or of any two codewords results in another codeword.

45. What is framing and explain different framing algorithms ?
Framing, as a theory of mass communication, refers to how the media packages and presents information to the public. According to the theory, the media highlights certain events and then places them within a particular context to encourage or discourage certain interpretations.

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