Semester 1 Review

Front

The position of a runner in a race is a type of analog data. The runner’s position is tracked using sensors. Which of the following best describes how the position of the runner is represented digitally?

Back

The position of the runner is sampled at regular intervals to approximate the real-word position, and a sequence of bits is used to represent each sample.

Front

Which of the following can be represented by a sequence of bits? An integer, An alphanumeric character, A machine language instruction

Back

I, II, and III

Front

Which of the following best describes the impact of Creative Commons?

Back

Creative Commons gives creators of digital content the ability to indicate how their works can be legally used and distributed, enabling broad access to digital information.

Front

A programmer created a piece of software and wants to publish it using a Creative Commons license. Which of the following is a direct benefit of publishing the software with this type of license?

Back

The programmer can specify the ways that other people are legally allowed to use and distribute the software.

Front

What ASCII character is represented by the binary (base 2) number 1001010?

Back

J

Front

The code fragment below is intended to display "odd" if the positive number num is odd. Which of the following can be used to replace so that the code fragment will work as intended? (num MOD 1) = 0, (num MOD 1) = 1, (num MOD 2) = 0, (num MOD 2) = 1

Back

(num MOD 2) = 1

Front

The variable isOpen is to be used to indicate whether or not a store is currently open. Which of the following is the most appropriate data type for isOpen? Integer, Boolean, String, Float

Back

Boolean

Front

Consider the following code segment.
What is displayed as a result of executing the code segment?
Options:
10 20 30 40,
21 30 40 50,
21 40 30 40,
21 40 30 50

Back

21 40 30 50

Front

A flowchart is a way to visually represent an algorithm. The flowchart below is used by an apartment rental website to set the variable to include for apartments that meet certain criteria. Which of the following statements is equivalent to the algorithm in the flowchart? Options: include ← (floor > 10) OR (bedrooms = 3), include ← (floor > 10) AND (bedrooms = 3), include ← (floor ≤ 10) OR (bedrooms ≠ 3), include ← (floor ≤ 10) AND (bedrooms ≠ 3)

Back

include ← (floor > 10) OR (bedrooms = 3)

Front

A user wants to save a data file on an online storage site. The user wants to reduce the size of the file, if possible, and wants to be able to completely restore the file to its original version. Which action best supports the user’s needs? Options: Compressing the file using a lossless compression algorithm before uploading it, Compressing the file using a lossy compression algorithm before uploading it, Compressing the file using both lossy and lossless compression algorithms before uploading it, Uploading the original file without using any compression algorithm

Back

Compressing the file using a lossless compression algorithm before uploading it