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Understanding Data Communications: From Fundamentals to Networking

Gilbert Held

Chapter 1

Communications in a Modern Society - all with Video Answers

Educators


Chapter Questions

Problem 1

Assume that your organization is considering the installation of badge readers to collect time and attendance data. Discuss how the time and attendance data can be used by management as well as serving as input for automation of other organizational functions.

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01:20

Problem 2

Discuss the operation of a transaction processing system with respect to a database accessed by the system.

Anand Jangid
Anand Jangid
Numerade Educator

Problem 3

What effect do you expect electronic commerce to have upon the ability of persons to purchase securities, airline tickets, and other products?

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00:53

Problem 4

Assume that you plan a trip that includes an airline flight from New York to San Francisco, the use of a rental car to drive to San Mateo and a week's stay at the San Mateo inn. Discuss the type of communications application you would probably use to plan your trip.

Amy Jiang
Amy Jiang
Numerade Educator

Problem 5

What is the function of a personal identification number (PIN) when entered into a bank automated teller machine (ATM)?

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Problem 6

Why is time sharing considered as a predecessor to desktop computing obtained through the use of a personal computer?

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Problem 7

What was a primary disadvantage of early message switching systems?

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Problem 8

Why is message switching commonly referred to as a store and forward system?

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Problem 9

x What is client-server computing?

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Problem 10

Discuss the differences between early and modern client-server models with respect to their operation and network infrastructure.

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Problem 11

Describe an example of electronic commerce assisting the consumer and an example of how it can help a business.

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Problem 12

xWhat are three of the key constraints associated with the development of communications applications?

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Problem 13

What does the term downsizing mean with respect to computer applications?

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Problem 14

If the transmission of 5280 records required 2 minutes 80 seconds, what is the throughput?

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Problem 15

Discuss the use of throughput and response time measurements with respect lo remote batch and interactive systems.

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Problem 16

What is bandwidth and why is it an important consideration for transmission?

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Problem 17

What is the term used to describe the merging of voice, data and video?

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