How many distinct patterns can n bits form, and what unsigned range do 8 bits cover?
Reveal answer & explanation
2^n patterns; 8 bits give 256 patterns naming 0 through 255, one less than the pattern count.
AP Computer Science Principles Flashcards & Study Review
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Start with 12 original questions on data, code and networks. Selected foundations; check coverage for the full scope.
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Version sample-r02 · Original foundation materials · No sign-up
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Learn: Reading bit patterns as values and abstractions
In exam pseudocode, what does = do inside a condition?
Reveal answer & explanation
It tests equality and evaluates to a Boolean; assignment uses the left arrow ←.
What does bandwidth measure on a network?
Reveal answer & explanation
Bandwidth is the maximum amount of data that can be sent in a fixed amount of time.
Which indexes are valid for a list of length n?
Reveal answer & explanation
1 through n; an index below 1 or above n produces an error and the program terminates.
Convert the unsigned binary 1101 to decimal.
Reveal answer & explanation
Place row 8, 4, 2, 1 under 1101: 8 + 4 + 1 = 13.
How many branches of IF/ELSE run for one evaluation?
Reveal answer & explanation
Exactly one: the IF block when the condition is true, otherwise the ELSE block.
What does INSERT(aList, i, value) do to elements already at indices >= i?
Reveal answer & explanation
Shifts them one position right, places value at index i, and increases the length by 1.
What identifies a device on the network so routing can target it?
Reveal answer & explanation
An address (IP address) assigned to the device on the network.
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Coverage, sources & review status
What this collection covers
Original foundation lessons and 12-question representative sample of a planned 48-question MCQ practice across selected goals; not complete CED coverage..
The cards preview selected ideas; they do not measure readiness for the whole examination. Your personal review schedule is available in the review tool.
Author-reviewed learning materials. Independent educator review is pending; question difficulty has not been calibrated with learner results. Check coverage and gaps before planning your preparation.
Sources and preparation route
These prompts and explanations are the site's original learning materials. The reference links below support the selected skills; they are not endorsements or official examination questions.