Digital Logic and Design
Question Identify the five components of a data communications systems.
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Question What are the three criteria necessary for an effective and efficient network?
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Question What are the advantage of a multipoint connection over a point-to-point connection?
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Question what are the two types of line configuration?
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Question Categorize the four basic topologies in terms of line confuguration
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Question What is the difference between half-duplex and full-duplex transmission modes?
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Question Name the four basic network topologies, and cite an advantage of each type.
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Question What are some of the factors that determine whether a communication system is a LAN or WAN?
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Question why are protocols needed?
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Question Why are standards needed?
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Question What is the maximum number of characters or symbols that can be represented by Unicode?
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Question A color image uses 16 bits to represent a pixel. What is the maximum number of different colors that can be represented?
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Question Assume six devices are arranged in a mesh topology. How many cables are needed? How many ports are needed for each device?
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Question You have two computers connected by an Ethernet hub at home. Is this a LAN, a MAN, or a WaN? Explain your reason.
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Question Draw a hybrid topology with a star backbone and three-ring networks.
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Question Draw a hybrid topology with a ring backbone and two bus networks.
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Question When a party makes a local telephone call to another party, is this a point-to-point or multipoint connection? Explain your answer.
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Question Compare the telephone network and the Internet. What are the similarities? What are the differences?
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Question Which layers in the Internet model are the network support layers?
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Question What is the difference between network layer delivery and transport layer delivery?
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Question What is peer-to-peer process? How does information from one layer to the next in the internet model?
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Question How does information get passed from one layer to the next in the Internet model?
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Question What is the difference between a port address, a logical address, and a physical address?
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Question How are OSI and ISO related to each other?
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Question Consider a noiseless channel with a bandwidth of 3000HZ. transmitting a signal with two signal levels. How can the maximum bit rate be calculated?
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Question we have a channel with a 1-MHz bandwidth. The SNR for this channel is 63. What are the appropriate bit rate and signal level?
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Question What does the amplitude of a signal measure? What does the frequency of a signal measure? What does the phase of a signal measure?
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Question What does the Nyquist theorem have to do with communications?
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Question A complex low-pass signal has a bandwidth of 200KHZ. What is the minimum sampling rate for this signal?
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Question Define a DC component and its effect on digital transmission.
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Question What is the difference between parallel and serial transmission?
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