Preview

06 - Bit rate and Bandwidth comparison

 1. In the context provided in the excerpt, what is the relationship between the bandwidth of the copper wire and the bit rate at which the data can be transmitted?
A particular long-distance data transmission system transmits
 data signals as electrical voltages using copper wire

  Lower the bandwidth, the greater the bit rate

  Greater the bandwidth, the lower the bit rate (negative correlation)

  Greater the bandwidth, the lower the baud rate which affects the bit rate

  Greater the bandwidth, the higher the bit rate (positive correlation)

 2. Bit rate increases as bandwidth increases.

  TRUE

  FALSE

 3. Bit rate decreases as bandwidth increases.

  TRUE

  FALSE

 4. It can be said that the bit rate is indirectly or inversely proportional to the bandwidth.

  TRUE

  FALSE

 5. Reading the excerpt below, select the correct answer.
A music group decide they are going to use the Internet
 to promote their work.The music group stream other groups'
 videos online. Explain why a connection with a high bit 
rate is important for this task

  All of the above answers are valid

  Video streaming is time sensitive

  Video streaming requires a large amount of data (in a short time)

  A high bit rate would be needed to prevent interruptions in the video

 6. The graph below shows three suggested relationships between bandwidth and bit rate. Which of the lines, A, B or C in the graph, shows the correct relationship between bandwidth and bit rate?
bitrate_bandwidth_comparison_1.png

  A

  B

  None of the listed options

  C

 7. Bandwidth can be described as the minimum speed at which the bits travel (measured in velocity)
Note: Bandwidth is measured in v for velocity

  FALSE

  TRUE

 8. Bandwidth can be described as: the range of frequencies a channel can handle
Note: A download will finish much faster when you have a high-bandwidth connection rather than a low-bandwidth connection.

  TRUE

  FALSE

 9. Bandwidth can also be described as the ________line speed or the ________ transmission speed.

  minimum

  maximum

  abstracted

  mandatory

 10. Fill in the blanks for the following excerpt
Bandwidth measures __________________________over a specific connection 
in a given amount of time. For example, a gigabit Ethernet connection
has a bandwidth of 1,000 Mbps, (125 megabytes per second).
An Internet connection via cable modem may provide 25 Mbps of bandwidth.

  how many 1s are in the mix

  how much data can be sent

  how many text messages or ASCII characters can be received

  how many eletrical volts are set to a '1'