WGU Scripting & Programming - Foundations: Section 10
Troubleshooting Process Vocab & Concepts Questions With
Complete Solutions
(Asymmetric/Symmetric) tests are often quick, so are done
before more thorough (asymmetric/symmetric) tests. Correct
Answer Asymmetric; symmetric (10.2)
(Asymmetric/Symmetric) tests are often used to try to quickly
validate a hypothesis. For example, if a lamp doesn't light,
shaking the bulb is an easy test to quickly validate a "Bulb
broken" hypothesis, before trying other more time-consuming
tests like putting the bulb into a known-working lamp. Correct
Answer Asymmetric (10.2)
A user strives to find where in a large item or system a
problem's cause exists. Which search algorithm divides an item
into two halves, runs a test to decide in which half something
lies, and repeats the binary search on that half? Correct Answer
Binary search (10.10)
After a test validates, the solution may be ______________.
Correct Answer Obvious (10.2)
Describe a common troubleshooting process: Correct Answer
(1) Create a hypothesis. A hypothesis states a possible cause of a
problem, then (2) Run a test. A test is a procedure whose result
validates or invalidates a hypothesis. Those steps are repeated
until a test's result validates a hypothesis. (10.1)
, Indicate the knowledge that underlies the given hypothesis or
test:
A refrigerator is saying the water filter needs changing, even
though the users have barely used the refrigerator's water
dispenser.
Hypothesis: The refrigerator's display is wrong; the filter is still
like new.
(i) The refrigerator is still cold.
(ii) Refrigerators don't check the filter, but just measure time.
Correct Answer Refrigerators don't check the filter, but just
measure time. Such time-based notices are commonplace in
refrigerators, but can be grossly inaccurate. Similarly, many
printers don't check cartridge ink level, but just count pages
printed. (10.6)
Indicate the knowledge that underlies the given hypothesis or
test:
A user uses a calculator to compute 100 / (32 - 32), but the
display says "Error".
Hypothesis: The calculation divided by 0, which is not allowed.
(i) The chips in calculators have bugs.
(ii) Dividing by 0 is undefined. Correct Answer Dividing by 0
is undefined. Dividing by 0 has no mathematical meaning, and
thus a calculator can't output a value. Without such knowledge,
generating that hypothesis would not have been possible. (10.6)
Indicate the knowledge that underlies the given hypothesis or
test:
After shopping at an online website, a user's credit card is
fraudulently used.
Hypothesis: A third party monitored the purchase.
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