Test your basic knowledge |

IT: Communication Protocols

Subject : it-skills
Instructions:
  • Answer 25 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. _______ communication allows you to transmit or receive - but not both.






2. Half-duplex communication lets you transmit and receive - but not at _____________.






3. The ____ topology connects all computers directly to one device - usually a switch.






4. The ____ topology connects each computer to every other computer.






5. Parallel is often used by _________ - and is faster than serial transmission - which sends bytes one at a time - sequentially.






6. Examples of network topologies include the star - ring - ____ - and mesh topologies.






7. Transmissions which send one bit after another are known as ______ transmissions.






8. This is known as bandwidth. Channels with high bandwidth are known as broadband - while channels with low bandwidth are known as ___________.






9. A '_______________' is an example of half-duplex communication.






10. The topology of a network is the ______ of the communication channels in a communications system.






11. Synchronous protocol does not need a ______ and stop bit to show the beginning and end of a byte - since it sends each byte at the rate agreed upon.






12. ___________ communication lets you send and receive at the same time.






13. The ____ topology hooks each computer to its neighbor and the last computer to the first - making a loop.






14. A ___________ protocol transmits data at a fixed rate agreed by the sender and receiver.






15. The multiplexer is a device that allows a single communications ________ to carry data transmissions from many sources at the same time.






16. These are known as serial transmissions. You can speed this up by using _________ transmission - which all of the bits in a byte are sent at the same time.






17. When transmitting data by ________ transmission - all the bits of a byte are sent at the same time.






18. An ____________ protocol transmits data with start and stop bits.






19. Most computers use an asynchronous protocol. Before each byte sent - it transmits a start bit - and after each byte - it transmits a stop bit. Without these bytes - the receiving device would not know when to start listening and when to stop - causin






20. One way of checking if a transmitted byte was sent accurately is by using a ______ bit - which has information on the number of 1 bits.






21. An example of simplex communication is a ___________ - which can only receive signals - but will not transmit them.






22. The ______________ processors that would typically be found in a larger organization include the front-end processor - concentrator - controller and multiplexer.






23. Bandwidth is the amount of data that can be sent over a ______________ channel line in one second.






24. Many computers use full-duplex communication. For example - a ______ line - where both parties can talk at the same time.






25. The bus topology connects each computer with its neighbors in a long _____.