Question 1 of 20 | 5.0 Points |
Which of these statements about the National Crime Information Center (NCIC) is true? A. The NCIC databases contain about 40 million records. | | B. Improper use of the NCIC has led to about 1 million false arrests. | | C. Local law enforcement agencies enter most of the information that is in the NCIC databases. | | D. The Department of Homeland Security is in charge of the NCIC. | |
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Question 2 of 20 | 5.0 Points |
The Patriot missile system: A. was designed to shoot down airplanes. | | B. failed to shoot down a Scud missile that killed 28 U.S. soldiers in the Gulf War. | | C. failed because it had been left running too long. | | D. All of the above | |
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Question 3 of 20 | 5.0 Points |
The Ariane 5 satellite launch vehicle failed because: A. a faulty on-board computer caused the other computers in the network to crash repeatedly. | | B. a bad sensor fed faulty information into the flight control computer, causing it to fail. | | C. the rocket's on-board computer sent back faulty information to ground control, causing the human controllers to destroy the rocket. | | D. code that worked correctly on the Ariane 4 failed on the Ariane 5. | |
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Question 4 of 20 | 5.0 Points |
The AT&T long-distance network did not collapse entirely on January 15, 1990, because: A. the U.S. Secret Service arrested the culprits before they could do any further damage. | | B. AT&T technicians rapidly fixed the software bug in the routing switches. | | C. MCI loaned some equipment to AT&T. | | D. not all the routing switches had been converted to the latest software. | |
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Question 5 of 20 | 5.0 Points |
Some computer experts have spoken out against the conversion to touch-screen voting machines because: A. there is no evidence that there have been any problems with punched card systems. | | B. they are made in China, which does not even hold elections. | | C. a power failure could make it impossible for people to vote. | | D. they do not have a paper audit trail. | |
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Question 6 of 20 | 5.0 Points |
By making the PDP 11 minicomputer an integral part of the Therac-25, AECL was able to: A. shrink the size of the machine considerably. | | B. increase the stock price of its subsidiary Digital Equipment Corporation. | | C. reduce costs by replacing hardware safety features with software safety features. | | D. eliminate the need for lead shielding. | |
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Question 7 of 20 | 5.0 Points |
Which mistake was NOT made by AECL, the manufacturer of the Therac-25? A. It did not include software or hardware devices to detect and report overdoses. | | B. It did not tell other hospitals about possible overdose incidents. | | C. It reused code without proper testing. | | D. It continued to sell the Therac-25 after the FDA declared it to be defective. | |
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Question 8 of 20 | 5.0 Points |
Computer simulations can: A. accurately predict the weather a month in advance. | | B. save automobile manufacturers time and money as they develop new cars. | | C. prove our planet is overpopulated. | | D. All of the above | |
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Question 9 of 20 | 5.0 Points |
The process of determining if a model is an accurate representation of the real system is called: A. the null hypothesis. | | B. software engineering. | | C. synthesis. | | D. validation. | |
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Question 10 of 20 | 5.0 Points |
The discipline focused on the production of software, as well as the development of tools, methodologies, and theories supporting software production, is most accurately called: A. artificial intelligence. | | B. computer engineering. | | C. computer science. | | D. software engineering. | |
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Question 11 of 20 | 5.0 Points |
__________ is the process of determining if a computer program correctly implements the simulation model. A. Identification | | B. Verification | | C. Conditioning | | D. Specification | |
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Question 12 of 20 | 5.0 Points |
The Ariane 5 was a satellite launch vehicle designed by the __________ space agency. A. British | | B. U.S. | | C. German | | D. French | |
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Question 13 of 20 | 5.0 Points |
Which of the following is NOT a reason to use a computer simulation? A. To model past events | | B. To produce a detailed financial model | | C. To reduce costs | | D. To save time | |
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Question 14 of 20 | 5.0 Points |
In 1999 computer errors led to the loss of two NASA probes to: A. The Moon. | | B. Mars. | | C. Venus. | | D. Saturn. | |
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Question 15 of 20 | 5.0 Points |
The inability of BAE Automated Systems to create an automated baggage handling system led to a significant delay in the opening of the new airport outside the city of: A. Boston. | | B. Chicago. | | C. Philadelphia. | | D. Denver. | |
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Question 16 of 20 | 5.0 Points |
In November 2002 a programming error caused a touch-screen voting machine to fail to record 436 ballots cast in Wake County: A. North Carolina. | | B. Indiana. | | C. Florida. | | D. California. | |
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Question 17 of 20 | 5.0 Points |
In a(n) __________, two or more concurrent tasks share a variable, and the order in which they read or write the value of the variable can affect the behavior of the program. A. causal condition | | B. integrated system | | C. race condition | | D. direct system | |
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Question 18 of 20 | 5.0 Points |
Software engineers use a four-step process to develop a software product. Which of the following is NOT one of the steps? A. Validation | | B. Simulation | | C. Evolution | | D. Specification | |
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Question 19 of 20 | 5.0 Points |
Which of the following is NOT an issue with DRE voting machines used in Brazil and India? A. Lack of a paper audit trail | | B. Vulnerability to tampering | | C. Voter identity may be revealed | | D. Source code is a trade secret | |
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Question 20 of 20 | 5.0 Points |
In 1975 Congress passed the __________. One goal of the act was to prevent manufacturers from putting unfair warranties on products costing more than $25. A. Retail Protection Act | | B. Uniform Commercial Code | | C. Limitation of Remedies and Liability Act | | D. Magnuson-Moss Warranty Act | |
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