Computer simulations can: accurately predict the weather a month in advance. sav
ID: 3568864 • Letter: C
Question
Computer simulations can:
accurately predict the weather a month in advance.
save automobile manufacturers time and money as they develop new cars.
prove our planet is overpopulated.
All of the above
None of the above
Question 2
A computer used as a component of a larger system is called:
an operating system.
a network.
an embedded system.
a mainframe computer.
a personal computer.
Question 3
Computers that process data from sensors as events occur are called
distributed computers.
event-driven simulations.
pseudo-sensory systems.
real-time systems.
time-activated systems.
Question 4
Some computer experts have spoken out against the conversion to touch-screen voting machines because:
there is no evidence that there have been any problems with punched card systems.
they are made in China, which does not even hold elections.
a power failure could make it impossible for people to vote.
they do not have a paper audit trail.
All of the above.
Question 5
The Ariane 5 satellite launch vehicle failed because
the rockets on-board computer sent back faulty information to ground control, causing the human controllers to destroy the rocket.
a faulty on-board computer caused the other computers in the network to crash repeatedly.
a software failure caused the rocket to self-destruct when in actuality the rockets flight was going perfectly.
a bad sensor fed faulty information into the flight control computer, causing it to fail.
code that worked correctly on the Ariane 4 failed on the Ariane 5.
Question 6
The AT&T long-distance network did not collapse entirely on January 15, 1990, because:
MCI loaned some equipment to AT&T.
the faulty computers shut themselves off before they could do any further damage.
not all the routing switches had been converted to the latest software.
AT&T technicians rapidly fixed the software bug in the routing switches.
the U.S. Secret Service arrested the culprits before they could do any further damage.
Question 7
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
computer engineering.
artificial intelligence.
software simulation.
computer science.
software engineering.
Question 8
The Patriot missile system:
was designed to shoot down airplanes.
failed to shoot down a Scud missile that killed 28 U.S. soldiers in the Gulf War.
failed because it had been left running too long.
failed because of a computer error.
All of the above
Question 9
The process of determining if a model is an accurate representation of the real system is called:
validation.
synthesis.
verification.
software engineering.
the null hypothesis.
Question 10
Which mistake was not made by AECL, the manufacturer of the Therac-25?
It did not include software or hardware devices to detect and report overdoses.
It did not tell other hospitals about possible overdose incidents.
It reused code without proper testing.
It continued to sell the Therac-25 after the FDA declared it to be defective.
AECL made all of these mistakes, and more.
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
e.None of the above
Explanation / Answer
1)
d. All of the above
Computer simulations can accurately predict the weather a month in advance, save automobile manufacturer’s time and money as they develop new cars and prove our planet is overpopulated.
2)
c. an embedded system.
An embedded system is used as a component of a large system.
3)
d. real-time systems.
Computers that process data from sensors as events are called real-time systems.
4)
d. they do not have a paper audit trail.
Some computer experts have spoken out against the conversion to touch-screen voting machines because they do not have a paper audit trail.
5)
e. code that worked correctly on the Ariane 4 failed on the Ariane 5.
The Ariane 5 satellite launch vehicle failed because code that worked correctly on the Ariane 4 failed on the Ariane 5.
6)
c. not all the routing switches had been converted to the latest software.
The AT&T long-distance network did not collapse entirely on January 15, 1990, because not all the routing switches had been converted to the latest software.
7)
e. software engineering.
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 software engineering.
8)
e. All of the above
9)
a. validation.
The process of determining if a model is an accurate representation of the real system is called validation.
10)
d. It continued to sell the Therac-25 after the FDA declared it to be defective.
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