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Test your basic knowledge |
IT: Communication Protocols
Start Test
Study First
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. A ___________ protocol transmits data at a fixed rate agreed by the sender and receiver.
Bus
Serial
Communications
Synchronous
2. 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
Synchronous
Parity [Explanation: With an even parity protocol - it would either add a 1 - to make the byte have an even number of 1 bits or a 0 if the byte already has an even number of 1 bits. With an odd parity protocol - it would either add a 1 - to make the
Transmitter clock
Start
3. 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.
Parallel
Layout
Phone
Narrowband
4. ___________ communication lets you send and receive at the same time.
Communications
Simplex
Narrowband
Full duplex
5. The topology of a network is the ______ of the communication channels in a communications system.
Layout
Communications
Parallel
Serial
6. An example of simplex communication is a ___________ - which can only receive signals - but will not transmit them.
Television
Layout
Synchronous
Narrowband
7. Examples of network topologies include the star - ring - ____ - and mesh topologies.
Parallel
Star
Synchronous
Bus
8. Bandwidth is the amount of data that can be sent over a ______________ channel line in one second.
Full duplex
Synchronous
Communications
Ring
9. This is known as bandwidth. Channels with high bandwidth are known as broadband - while channels with low bandwidth are known as ___________.
Serial
Layout
Narrowband
Simplex
10. The bus topology connects each computer with its neighbors in a long _____.
Chain
Ring
Walkie-talkie
Simplex
11. When transmitting data by ________ transmission - all the bits of a byte are sent at the same time.
Parallel
Asynchronous
Bus
Printers
12. The ____ topology connects each computer to every other computer.
Simplex
Synchronous
Mesh
Communications
13. 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.
Phone
Parallel
Television
Start
14. An ____________ protocol transmits data with start and stop bits.
Simplex
Asynchronous
Synchronous
Transmitter clock
15. The ____ topology hooks each computer to its neighbor and the last computer to the first - making a loop.
Asynchronous
Ring
Parallel
Bus
16. The ______________ processors that would typically be found in a larger organization include the front-end processor - concentrator - controller and multiplexer.
Parallel
The same time
Television
Communications
17. Parallel is often used by _________ - and is faster than serial transmission - which sends bytes one at a time - sequentially.
Printers
Transmitter clock
Mesh
Start
18. A '_______________' is an example of half-duplex communication.
Star
Parallel
Walkie-talkie
Ring
19. Transmissions which send one bit after another are known as ______ transmissions.
Communications
Ring
Serial
Walkie-talkie
20. Many computers use full-duplex communication. For example - a ______ line - where both parties can talk at the same time.
Phone
Layout
The same time
Communications
21. The ____ topology connects all computers directly to one device - usually a switch.
Simplex
Communications
Star
Asynchronous
22. 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.
Mesh
Parity [Explanation: With an even parity protocol - it would either add a 1 - to make the byte have an even number of 1 bits or a 0 if the byte already has an even number of 1 bits. With an odd parity protocol - it would either add a 1 - to make the
Television
Layout
23. _______ communication allows you to transmit or receive - but not both.
Television
Narrowband
Simplex
Asynchronous
24. The multiplexer is a device that allows a single communications ________ to carry data transmissions from many sources at the same time.
Channel
Synchronous
Full duplex
Layout
25. Half-duplex communication lets you transmit and receive - but not at _____________.
Parallel
The same time
Communications
Chain