AP CSP Diagnostic Exam Part 4 of 5

Why do we use hexadecimal, a base 16 number system that use 0-9 & A-F?

• It uns more efficiently than decimals

• Computers use hexadecimal

• It is easier to debug program errors written with hexadecimals

• It takes fewer characters to represent larger numbers

Why is it important to write programs that are readable?

• They are easier to modify and debug through use of good names, procedures, and formatting

• They run more efficiently

• They effectively process all cases of input

• They produce accurate results

Why is "big data" to science and business?

• The investment in the time and expense of processing big data is large so the expectation for critical finding is huge

• It can identify trends or solve problem that smaller datasets may not identify

• It is too large to process when time is short, so businesses cannot use it effectively to react quickly enough for product changes.

• It is useful to generate new research possibilities, so it only important to science

What is an example of lower-level abstractions combining to make higher-level abstractions?

• Dividing functionality into separate modules that are all part of one program

• Writing pseudo-code to identify what they program needs to do

• Creating help documentation so the user will know how to use the program

• Using a flowchart to identify program decisions

How is the Internet scalable?

• Through the ability for additional networks and routers to be added without impacting service

• Through the ability to add longer public keys to keep data secure

• Through the ability to add additional authentication for users

• Through the ability to add additional latency to request

How can social media have a positive global impact?

• By allowing people to post their views anonymously and safely

• By allowing accounts of unverified events to spread quickly

• By providing a way for those impacted by disasters to communicate that they are safe

• By posting images or videos without a person's permission to make them famous

What does it mean if a program runs in less time than another?

• It is efficient

• It is correct

• It has been verified

• It provides economies of scale in processing

How do parameters provide abstractions?

• They block invalid input values

• They return calculated vales from the procedure to the calling program

• They allow software reuse for different values

• They provide the detail needed for an abstraction to function

Tracing what your code is doing is an example of which one of the following terms?

• Discovery

• Debugging

• Shadowing ghe code

• Scaffolding

How can an organization begin the process of analyzing data?

• By following an iterative development process

• By establishing measurements the data should show

• By developing hypotheses and questions to test

• By checking to see of the data matches previously collected data