FREE Bachelor of Computer Science Degree MCQ Questions and Answers

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On a computer, musicians record their songs. They are disappointed by the lower-than-expected sound quality they hear when they play back a digital copy of their song. Which of the following might explain why this discrepancy might exist?

Correct! Wrong!

The song's recording and storage techniques may have an impact on the sound quality. For instance, if the music was recorded at a low bit rate, the audio file's sound quality will deteriorate since it does not include as much high-quality information as it would at a higher bit rate.

90% of the students who took the most recent AP exam at one school passed it. The school intends to leverage this success to promote its offerings to potential students' families.
Which approach from the list below would be best for summarizing this information and giving it to the families?

Correct! Wrong!

The websites of the best schools will certainly be checked by prospective families. They cannot be expected to read a lengthy report or review each student's scorecard individually.
Additionally, sending emails is futile because they would be marked as spam and read like advertisements. The pie chart will provide the quickest way for them to assess the performance of a school.

The bank will request your phone number when you visit to open a new account so they can link it to your account in the event of an incident. Which of the following best sums up the justification?

Correct! Wrong!

Your number is required by the bank in order to set up multi-factor authentication, which will increase the security of your new account. You must always have more than one way to authenticate yourself while using this method.

In order to quickly complete all tasks by dividing the vast amount of data into smaller pieces and distributing them to different computer equipment for sequential processing, an organization has built up a parallel computing system.
The company, however, requests that its staff refrain from connecting any new devices to the system. If the company decides against further segmenting the tasks, what could be a potential justification for the restriction?

Correct! Wrong!

The sequential processing speed of each computer device serves as the upper bound on the speed of parallel systems. Adding more devices in parallel could speed up parallel processing, but this won't change how long each device takes to complete a task.

You create a program that enables you to do several mathematical operations (such as addition, subtraction, multiplication, and division) on a collection of integers taken from a database.
The real test results, however, return a random value, which makes you believe that your code contains a randomizing variable.

Correct! Wrong!

The element that is generating the issue can be identified, seen, and displayed, but it cannot be discovered or eliminated by just running the program again. Rerunning a piece of code will only provide a fresh set of random values, which makes it useless for troubleshooting.

A code is created by a programmer to analyze the population's middle age. Only those who meet the 42-year-old threshold are classified as middle-aged people.
The two conditional statements that can be used to create the algorithm are illustrated below. Will the operations in the two statements be the same?
I. IF (older than 42)
II. IF NOT (younger than 42)

Correct! Wrong!

The first statement only considers those over 42 to be middle-aged, whereas the second statement considers people to be middle-aged if they are 42 or older, hence the two operations will not be equivalent.

Which of the following codes, when run, will result in a TRUE statement?

Correct! Wrong!

A TRUE statement would result from the code. The code can be easily understood when broken down.
(true OR false) = true
(false OR NOT (true)) = false
(true) AND NOT (false) = true

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