Exam 5: Making Connections Efficient: Multiplexing and Compression

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____ replaces any repetitions of the same bit or byte that occur in a sequence of data with a single occurrence of the bit/byte and a run count,or simply with a run count.

(Multiple Choice)
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Synchronous Optical Network (SONET)and ____________________,are powerful standards for multiplexing data streams over a single medium.

(Short Answer)
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In ____________________,the sharing of the medium is accomplished by dividing available transmission time among users.

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The Lempel-Ziv algorithm can be fairly effective in compressing data.

(True/False)
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Wavelength division multiplexing (WDM)is,in essence,a time division multiplexing technique.

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How does Wavelength division multiplexing work?

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In general,the device that accepts input from one or more users is called the ____________________.

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____ gives each incoming source signal a turn to be transmitted,proceeding through the sources in round-robin fashion.

(Multiple Choice)
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As with a simple connection between one sending device and one receiving device,maintaining synchronization across a multiplexed link is important.

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SONET was developed in the United States by ____.

(Multiple Choice)
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The device that is attached to the receiving end of the medium and splits off each signal to deliver it to the appropriate receiver is called the second multiplexor,or ____.

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SONET defines a hierarchy of signaling levels,or data transmission rates,called ____.

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____________________,transmits data only from active users and does not transmit empty time slots.

(Short Answer)
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One way to make a connection between two devices more efficient is to compress the data that transfers over the connection.

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SONET is a more modern term for the older T-1 system.

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Cell phones are an example of dynamically assigned channels.

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How does time division multiplexing work?

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Multiplexing is a technique typically performed at the network access layer of the TCP/IP protocol suite.

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With a(n)____________________ compression technique,no data is lost due to compression.

(Short Answer)
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Code division multiplexing can produce system capacities that are ____ times those of frequency division multiplexing systems.

(Multiple Choice)
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