Algorithms Unit Test UPDATED ACTUAL Questions and CORRECT Answers
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Algorithms Unit
Institution
Algorithms Unit
Algorithms Unit Test UPDATED ACTUAL
Questions and CORRECT Answers
Which of these best describes which algorithms are more efficient with parallel computing -
CORRECT ANSWER- An algorithm that benefits from parallel computing is one that
can be broken down into smaller independent operations
...
Algorithms Unit Test UPDATED ACTUAL
Questions and CORRECT Answers
Which of these best describes which algorithms are more efficient with parallel computing -
CORRECT ANSWER✔✔- An algorithm that benefits from parallel computing is one that
can be broken down into smaller independent operations
A software engineer at a mapping company is asked to write a geocoding program that can
convert 6000,000 addresses into latitude/longitude pairs. The geocoding needs to be
completed by the next day, in time for a company deadline
When the engineer tries running the program on their computer, they realize that their
computer cannot complete the fast quickly enough. They decide to use distributed computing
to improve the performance - CORRECT ANSWER✔✔- A distribution computing solution
can geocode multiple addresses at once by using multiple computers
The two algorithms below are both intended to calculate the sum of cubes from 1 to n, where
n is any positive integer.
For example, if n is 3, the algorithms should calculate a sum of 36, from 1^3 + 2^3 + 3^3. -
CORRECT ANSWER✔✔- Both algorithms calculate the correct sum.
TensorFlow is an open-source machine learning platform with support for distributed
computing.
This chart shows the speedup gained from using TensorFlow to train a neural network with an
increasing number of computers: - CORRECT ANSWER✔✔- Distributed computing can
reduce the time it takes to solve large problems.
An app for electric car owners includes a feature that shows them the charging station that's
the nearest to them.
To calculate that, the app first finds the 10 closest stations according to their beeline distance
from the user address. It then uses the procedure below to calculate the driving distance to
each station and returns the station with the shortest distance.
The call to calcDrivingDistance() takes 3 seconds to return a result, as the driving directions
algorithm requires searching through many possible routes to calculate the optimal route. The
other operations, like incrementing the index and comparing the distances, take only a few
nanoseconds. - CORRECT ANSWER✔✔- 30 seconds
, The following algorithm displays a sequence of 10 odd squares:
Start by setting n to 1.
Repeat 10 times:
Multiply n by itself and display the result
Add 2 to n - CORRECT ANSWER✔✔- n ← 1
REPEAT 10 TIMES {
result ← n * n
DISPLAY(result)
n←n+2
}
Which of these applications is NOT an example of distributed computing? - CORRECT
ANSWER✔✔- Premiere Pro is a video editing program from Adobe that allows users to
compose multiple videos and add special effects. Exporting the final video requires a lot of
computational power, so Premiere assigns different parts of the exporting task to each of the
computer's processors (as long as the computer has multiple processors).
An online news website relies on in-page advertisements to make money. Their article pages
have multiple slots for advertisements, and each slot can be used for a full-size ad or multiple
smaller ads. Advertisers specify their size and desired display count per day. - CORRECT
ANSWER✔✔- Use a heuristic-based algorithm that suggests an advertisement schedule that
is close to optimal.
Han develops an algorithm to compute the average amount of time that users watch a
particular video on Khan Academy. He then realizes that the average is very low, due to a
large number of times with duration "0" or "1", and decides that the algorithm should ignore
those durations. - CORRECT ANSWER✔✔- Selection
One way to measure the efficiency of an algorithm is to count how many steps it requires for
different input sizes and then use a function to describe how the number of steps increases in
proportion to the input size.
The table below lists various efficiencies, where n represents the input size. - CORRECT
ANSWER✔✔- n^2 + 6n = polynomial
6^n = superpolynomial
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