AP‌‌Computer‌‌Science‌‌Principles‌‌Unit‌‌3‌‌Quiz‌

1. What‌‌distinguishes‌‌programming‌‌languages‌‌from‌‌spoken‌‌languages?‌
a. There‌‌are‌‌a‌‌lot‌‌of‌‌people‌‌who‌‌speak‌‌programming‌‌languages.‌
b. There‌‌is‌‌only‌‌one‌‌programming‌‌language,‌‌but‌‌there‌‌are‌‌several‌‌different‌‌spoken‌
languages.‌
c. Both‌‌spoken‌‌and‌‌programming‌‌languages‌‌are‌‌the‌‌same.‌
d. Spoken‌‌languages‌‌are‌‌harder‌‌to‌‌comprehend.‌

2. An‌‌algorithm‌‌is‌‌defined‌‌as….‌
a. A‌‌precise‌‌sequence‌‌of‌‌instructions‌‌for‌‌processes‌‌that‌‌can‌‌be‌‌executed‌‌by‌‌a‌‌computer‌
b. A‌‌step-by-step‌‌procedure‌‌for‌‌scientific‌‌calculations‌
c. A‌‌procedure‌‌for‌‌finding‌‌the‌‌greatest‌‌common‌‌divisor‌‌of‌‌two‌‌numbers‌
d. A‌‌a‌‌set‌‌of‌‌rules‌‌to‌‌follow‌‌in‌‌a‌‌household‌

3. What‌‌are‌‌the‌‌building‌‌blocks‌‌of‌‌an‌‌algorithm?‌
a. Sequencing‌
b. Sequencing‌‌and‌‌selection‌
c. Selection‌
d. ‌Iteration‌
e. ‌Iteration‌‌and‌‌Selection‌
f. Iteration‌‌and‌‌Sequencing‌
g. ‌None‌‌of‌‌the‌‌above‌
h. Sequencing‌‌and‌‌selection‌‌and‌‌iteration.‌
4. John‌‌B‌‌created‌‌a‌‌very‌‌simple‌‌algorithm‌‌for‌‌eating‌‌breakfast‌‌cereal‌‌everyday.‌‌In‌‌his‌
algorithm‌‌he‌‌included‌‌the‌‌steps:‌‌‌put‌‌cereal‌‌in‌‌a‌‌bowl.‌‌add‌‌milk‌‌to‌‌cereal,‌‌eat‌‌cereal,‌‌wash‌
bowl.‌‌What‌‌building‌‌blocks‌‌did‌‌he‌‌use?‌
a. Sequencing‌ ‌and‌‌selection‌
b. Selection‌
c. ‌Iteration‌
d. Sequencing‌
e. Iteration‌‌and‌‌Sequencing‌
f. Sequencing‌‌and‌‌selection‌‌and‌‌iteration.‌
g. ‌None‌‌of‌‌the‌‌above‌
h. ‌Iteration‌‌and‌‌Selection‌

5. What‌‌building‌‌block‌‌is‌‌being‌‌utilized‌‌in‌‌the‌‌following‌‌function?‌

a. Selection‌
b. ‌Iteration‌
c. Sequencing‌
d. Iteration‌‌and‌‌Sequencing‌
e. Sequencing‌‌and‌‌selection‌‌and‌‌iteration.‌
6. When‌‌naming‌‌functions,‌‌what‌‌should‌‌you‌‌consider?‌
a.‌‌The‌‌name‌‌of‌‌a‌‌function‌‌should‌‌specify‌‌how‌‌long‌‌it‌‌takes‌‌to‌‌run.‌
b.‌‌A‌‌function‌‌name‌‌should‌‌be‌‌appealing‌‌to‌‌the‌‌eye.‌
c.‌‌The‌‌name‌‌of‌‌a‌‌function‌‌should‌‌be‌‌as‌‌descriptive‌‌as‌‌possible‌‌to‌‌reflect‌‌what‌‌it‌
does.‌
d.‌‌The‌‌names‌‌of‌‌two‌‌functions‌‌with‌‌identical‌‌purposes‌‌should‌‌be‌‌the‌‌same.‌
f.‌‌Functions‌‌must‌‌be‌‌listed‌‌in‌‌alphabetical‌‌order.‌

7. In‌‌programming,‌‌an‌‌expression‌‌that‌‌evaluates‌‌to‌‌true‌‌or‌‌false‌‌is...‌
a.‌‌Expression‌‌with‌‌Variables‌
b.‌‌Mathematical‌‌Expression‌
c.‌‌Overarching‌‌Expression‌
d.‌‌Boolean‌‌Expression‌

‌
8. You're‌‌working‌‌on‌‌a‌‌code‌‌project‌‌and‌‌want‌‌to‌‌use‌‌a‌‌piece‌‌of‌‌code‌‌your‌‌friend‌‌had‌‌written‌
in‌‌your‌‌program.‌‌What‌‌is‌‌the‌‌most‌‌basic‌‌method‌‌your‌‌friend‌‌could‌‌have‌‌written‌‌the‌‌code‌‌to‌
make‌‌it‌‌easier‌‌for‌‌you‌‌to‌‌make‌‌modifications‌‌later?‌
a.‌‌Attach‌‌a‌‌list‌‌of‌‌project‌‌requirements‌
b.‌‌Create‌‌a‌‌video‌‌illustrating‌‌the‌‌project´s‌‌interface‌‌and‌‌functionality‌
c.‌‌Use‌‌procedure‌‌and‌‌variable‌‌names‌‌that‌‌describe‌‌their‌‌content‌‌and‌‌capabilities‌
d.‌‌Make‌‌a‌‌blog‌‌about‌‌the‌‌different‌‌programming‌‌concepts‌‌that‌‌were‌‌used‌‌in‌‌the‌
project‌
9. In‌‌some‌‌programming‌‌languages,‌‌constants‌‌(a‌‌value‌‌or‌‌variable‌‌that‌‌is‌‌not‌‌changed‌‌by‌‌the‌
program‌‌throughout‌‌execution)‌‌are‌‌implemented.‌‌Which‌‌of‌‌the‌‌following‌‌is‌‌a‌‌valid‌
argument‌‌for‌‌using‌‌a‌‌constant?‌

I. To‌‌represent‌‌mathematical‌‌concepts‌‌like‌‌Pi,‌‌Apéry's‌‌constant,‌‌a‌ nd‌‌Belphegor's‌‌
prime‌‌number‌
II. To‌‌represent‌‌fixed‌‌values‌‌like‌‌the‌‌number‌‌of‌‌hours‌‌in‌‌a‌‌day‌
III. To‌‌represent‌‌the‌‌score‌‌of‌‌a‌‌lacrosse‌‌game‌

a.‌‌II‌‌only‌
b.‌‌I‌‌and‌‌III‌‌only‌
c.‌‌II‌‌and‌‌III‌‌only‌
d.‌‌I‌‌and‌‌II‌ ‌only‌
e.‌‌I,‌‌II‌‌and‌‌III‌

10. Knowing‌‌how‌‌to‌‌operate‌‌the‌‌lawn‌‌mower‌‌without‌‌knowing‌‌every‌‌piece‌‌it‌‌contains‌‌is‌‌an‌
example‌‌of...‌
a. Algorithms‌
b. Constants‌
c. Variables‌
d. Procedures‌
e. Abstraction‌
‌Refer‌‌to‌‌the‌‌following‌

11.‌ ‌What‌‌will‌‌the‌‌code‌‌display?‌
a.‌‌bananas,‌‌grapes,‌‌oranges,‌‌apples,‌‌tomato,‌‌tomato,‌‌tomato‌
b.‌‌bananas,‌‌grapes,‌‌oranges,‌‌apples,‌‌tomato,‌‌tomato,‌‌tomato,‌‌tomato‌
c.‌‌bananas,‌‌grapes,‌‌oranges,‌‌apples,‌‌tomato,‌‌tomato‌
d.‌‌bananas,‌‌grapes,‌‌oranges,‌‌apples,‌‌tomato‌

12.‌ ‌What‌‌is‌‌the‌‌index‌‌position‌‌of‌‌grapes?‌
a.‌ ‌0‌
b.‌ ‌3‌
c.‌ ‌1‌
d.‌ ‌2‌
13.‌‌What‌‌is‌‌displayed‌‌after‌‌the‌‌following‌‌code‌‌runs?‌

a.‌ ‌Error‌‌processing‌‌this‌‌message‌
b.‌‌Believein‌‌yourself!‌
c.‌‌Believe‌‌in‌‌yourself!‌
d.‌ ‌Believe‌‌in‌
‌yourself‌

14.‌‌Why‌‌is‌‌a‌‌heuristic‌‌algorithm‌‌required‌‌for‌‌a‌‌computer‌‌to‌‌play‌‌a‌‌game‌‌like‌‌checkers?‌
a.‌ ‌It‌‌keeps‌‌the‌‌game‌‌fair‌‌by‌‌allowing‌‌the‌‌computer‌‌to‌‌only‌‌win‌‌a‌‌certain‌‌amount‌‌of‌‌times‌
b.‌ ‌It‌‌allows‌‌a‌‌human‌‌player‌‌to‌‌win‌‌due‌‌to‌‌statistics‌
c.‌‌It‌‌checks‌‌every‌‌possible‌‌combination‌‌to‌‌find‌‌the‌‌best‌‌move‌
d.‌‌It‌‌takes‌‌too‌‌long‌‌to‌‌analyze‌‌each‌‌possible‌‌solution‌‌forcing‌‌the‌‌computer‌‌to‌‌take‌‌the‌‌next‌
best‌‌move‌

15.‌‌Which‌‌of‌‌the‌‌following‌‌statements‌‌is‌‌true?‌
a.‌‌There‌‌will‌‌be‌‌problems‌‌that‌‌can‌‌not‌‌be‌‌solved‌‌by‌‌an‌‌algorithm‌
b.‌‌Every‌‌problem‌‌can‌‌be‌‌solved‌‌by‌‌an‌‌algorithm‌‌but‌‌some‌‌solutions‌‌will‌‌take‌‌more‌‌than‌‌a‌
couple‌‌hundred‌‌years‌
c.‌‌Every‌‌problem‌‌can‌‌be‌‌solved‌‌by‌‌an‌‌algorithm‌‌but‌‌some‌‌solutions‌‌just‌‌don´t‌‌exist‌‌yet‌
d.‌ ‌Every‌‌problem‌‌can‌‌be‌‌solved‌‌by‌‌an‌‌algorithm‌‌regardless‌‌of‌‌reasonable‌‌time‌‌and‌
computer‌‌brand‌
16.‌‌Which‌‌of‌‌the‌‌following‌‌Boolean‌‌expressions‌‌are‌‌equivalent‌‌to‌‌the‌‌expression‌‌num‌‌≥‌ ‌24‌‌‌?‌
(There‌‌are‌‌2‌‌Solutions‌‌to‌‌this‌‌problem)‌
a.‌‌NOT‌‌(num‌‌<‌‌23)‌
b.‌‌(num‌‌>‌‌24)‌ ‌AND‌‌(num‌‌=‌‌24)‌
c.‌‌NOT‌‌(num‌‌<‌‌24)‌
d.‌‌(num‌‌>‌‌24)‌ ‌OR‌‌(num‌‌=‌‌24)‌

17.‌‌If‌‌the‌‌variables‌‌early‌‌and‌‌late‌‌both‌‌have‌‌the‌‌value‌‌false,‌‌what‌‌is‌‌displayed‌‌when‌‌the‌‌segment‌‌is‌
run?‌

a.‌‌Oh‌‌shoot!‌
b.‌‌Hello,‌‌how‌‌are‌‌you?‌
c.‌‌Better‌‌get‌‌to‌‌work.‌
d.‌‌Hello,‌‌how‌‌are‌‌you?‌‌Better‌‌get‌‌to‌‌work.‌

18.‌‌What‌‌are‌‌the‌‌advantages‌‌of‌‌using‌‌parameters‌‌in‌‌programming?‌
a.‌‌The‌‌number‌‌of‌‌times‌‌the‌‌function‌‌will‌‌run‌‌is‌‌determined‌‌by‌‌the‌‌parameters.‌
b.‌‌Parameters‌‌in‌‌functions‌‌allow‌‌for‌‌more‌‌flexible‌‌behavior‌
c.‌‌Parameters‌‌are‌‌beneficial‌‌to‌‌programming‌‌teams‌‌because‌‌they‌‌assist‌‌in‌‌defining‌‌the‌
boundaries‌‌of‌‌the‌‌problem‌‌they‌‌are‌‌attempting‌‌to‌‌solve.‌
d.‌‌Parameters‌‌alter‌‌the‌‌order‌‌in‌‌which‌‌operations‌‌are‌‌performed‌‌within‌‌a‌‌function.‌
19.‌‌There‌‌is‌‌a‌‌database‌‌in‌‌Sunnyvale‌‌that‌‌keeps‌‌track‌‌of‌‌kids,‌‌including‌‌variables‌‌like‌
numberOfDetentions‌‌and‌‌gradePointAverage?‌‌The‌‌following‌‌expression‌‌is‌‌used‌‌to‌‌determine‌‌who‌
gets‌‌an‌‌extra‌‌30‌‌minutes‌‌of‌‌free‌‌time.‌

(numberOfDetentions‌‌≤‌‌4)‌ ‌AND‌‌(‌gradePointAverage‌‌>‌‌3.3)‌

Which‌‌of‌‌the‌‌following‌‌pairs‌‌would‌‌be‌‌eligible‌‌for‌‌an‌‌extra‌‌30‌‌minutes‌‌of‌‌free‌‌time?‌
a.‌‌numberOfDetentions‌‌=‌‌2,‌‌(gradePointAverage‌‌=‌‌3.25)‌
b.‌‌numberOfDetentions‌‌=‌‌3,‌‌(gradePointAverage‌‌=‌‌1.5)‌
c.‌‌numberOfDetentions‌‌=‌‌5,‌‌(gradePointAverage‌‌=‌‌4.0)‌
d.‌‌numberOfDetentions‌‌=‌‌4,‌‌(gradePointAverage‌‌=‌‌3.5)‌

20.‌‌Any‌‌computer‌‌‌program‌‌statement‌‌that‌‌evaluates‌‌to‌‌some‌‌value‌‌is‌‌called‌‌a(n)‌….‌
A.‌‌Expression‌
B.‌‌Procedure‌
C.‌‌Variable‌
D.‌‌Formula‌
Explanations‌
1. D‌‌-‌‌Programming‌‌languages‌‌are‌‌fundamentally‌‌different‌‌from‌‌the‌‌human‌‌languages‌‌we‌‌use‌
every‌‌day‌‌because‌‌they‌‌are‌‌purpose-built‌‌to‌‌provide‌‌clear‌‌instructions‌‌and‌‌overcome‌‌the‌
ambiguities‌‌of‌‌human‌‌language.‌
2. A‌‌-‌‌An‌‌algorithm‌‌is‌‌a‌‌set‌‌of‌‌steps‌‌or‌‌instructions‌‌that‌‌someone‌‌or/and‌‌a‌‌computer‌‌could‌
follow‌‌to‌‌complete‌‌a‌‌task.‌
3. H‌‌-‌‌An‌‌algorithm‌‌is‌‌made‌‌up‌‌of‌‌three‌‌basic‌‌building‌‌blocks:‌‌sequencing,‌‌selection,‌‌and‌
iteration.‌‌Sequencing‌‌is‌‌the‌‌specific‌‌order‌‌in‌‌which‌‌instructions‌‌are‌‌performed‌‌in‌‌an‌
algorithm.‌‌Selection‌‌is‌‌a‌‌programming‌‌construct‌‌where‌‌a‌‌section‌‌of‌‌code‌‌is‌‌run‌‌only‌‌if‌‌a‌
condition‌‌is‌‌met.‌ ‌Iteration‌‌is‌‌the‌‌term‌‌given‌‌to‌‌the‌‌repetition‌‌of‌‌a‌‌block‌‌of‌‌instructions‌
(code)‌‌within‌‌a‌‌computer‌‌program‌‌for‌‌a‌‌number‌‌of‌‌instances‌‌or‌‌until‌‌a‌‌condition‌‌is‌‌met.‌
4. E‌‌-‌ ‌Every‌‌day,‌‌John‌‌B‌‌makes‌‌cereal‌‌with‌‌his‌‌algorithm,‌‌which‌‌has‌‌its‌‌own‌‌method‌‌and‌
order.‌
5. A‌‌-‌ ‌The‌‌function‌‌uses‌‌selection‌‌to‌‌determine‌‌a‌‌different‌‌set‌‌of‌‌steps‌‌to‌‌execute‌‌based‌‌on‌
whatever‌‌the‌‌´letter´‌‌variable‌‌equals.‌
6. C‌ ‌-‌‌Utilizing‌‌a‌‌term‌‌with‌‌meaning‌‌(give‌‌some‌‌context)‌‌allows‌‌you‌‌to‌‌return‌‌to‌‌your‌‌project‌
at‌‌a‌‌later‌‌period‌‌and‌‌understand‌‌its‌‌purpose,‌‌as‌‌well‌‌as‌‌allowing‌‌others‌‌to‌‌understand‌‌your‌
function's‌‌purpose.‌
7. D‌‌-‌‌A‌‌Boolean‌‌expression‌‌is‌‌a‌‌logical‌‌statement‌‌that‌‌is‌‌either‌‌TRUE‌‌or‌‌FALSE.‌
8. C‌‌-‌‌Using‌‌procedure‌‌and‌‌variable‌‌names‌‌that‌‌are‌‌clear‌‌and‌‌functional‌‌makes‌‌the‌‌code‌‌more‌
readable‌‌and‌‌understandable.‌‌B‌ecause‌‌you‌‌and‌‌your‌‌friend‌‌may‌‌not‌‌be‌‌working‌‌on‌‌the‌
same‌‌project,‌‌their‌‌documentation‌‌of‌‌their‌‌work‌‌and‌‌their‌‌list‌‌of‌‌project‌‌requirements‌‌is‌
unimportant‌‌to‌‌you.‌
9. D‌‌-‌‌A‌‌lacrosse‌‌game's‌‌score‌‌is‌‌likely‌‌to‌‌vary,‌‌while‌‌quantities‌‌like‌‌pi‌‌and‌‌the‌‌number‌‌of‌
hours‌‌in‌‌a‌‌day‌‌remain‌‌constant.‌
10. ‌E‌‌-‌ ‌Abstraction‌‌is‌‌a‌‌mechanism‌‌and‌‌a‌‌practice‌‌to‌‌reduce‌‌and‌‌factor‌‌out‌‌details‌‌so‌‌that‌‌one‌
can‌‌focus‌‌on‌‌a‌‌few‌‌concepts‌‌at‌‌a‌‌time.‌
11. ‌B‌‌-‌‌Each‌‌time‌‌the‌‌word‌‌in‌‌the‌‌list‌‌is‌‌not‌‌¨tomato¨,‌‌¨tomato¨‌‌is‌‌appended‌‌to‌‌the‌‌list.‌
12. ‌D‌‌-‌‌¨grapes¨‌‌is‌‌in‌‌the‌‌second‌‌position‌‌on‌‌the‌‌list.‌
13. ‌C‌‌-‌‌The‌‌plus‌‌(+)‌‌sign‌‌glues‌‌the‌‌message‌‌together.‌
14. ‌D‌‌-‌‌When‌‌the‌‌actual‌‌solution‌‌to‌‌an‌‌issue‌‌is‌‌untraceable,‌‌a‌‌heuristic‌‌method‌‌is‌‌used.‌‌The‌
heuristic‌‌strategy‌‌improves‌‌the‌‌player's‌‌experience‌‌by‌‌speeding‌‌up‌‌the‌‌game.‌
15. ‌A‌‌-‌‌Some‌‌problems‌‌simply‌‌can‌‌not‌‌be‌‌solved‌‌by‌‌an‌‌algorithm.‌
16. ‌C‌‌&‌‌D‌‌-‌ ‌The‌‌expression‌‌(num‌‌>‌‌24)‌ ‌OR‌‌(num‌‌=‌‌24)‌‌always‌‌evaluates‌‌to‌‌true‌‌if‌‌num‌‌is‌
greater‌‌than‌‌or‌‌equal‌‌to‌‌24‌‌because‌‌of‌‌the‌‌OR‌‌statement‌‌combining‌‌the‌‌two.‌‌On‌‌the‌‌other‌
hand,‌‌the‌‌NOT‌‌(num‌‌<‌‌24)‌‌expression‌‌evaluates‌‌to‌‌true‌‌if‌‌(num‌‌<‌‌24)‌‌evaluates‌‌to‌‌false.‌
This‌‌occurs‌‌when‌‌num‌‌is‌‌greater‌‌than‌‌or‌‌equal‌‌to‌‌24.‌
17. ‌C‌‌-‌ ‌Because‌‌the‌‌variables‌‌¨early¨‌‌and‌‌¨late¨‌‌were‌‌set‌‌to‌‌false,‌‌the‌‌text‌‌included‌‌in‌‌them‌
does‌‌not‌‌appear‌‌on‌‌screen,‌‌leaving‌‌the‌‌message‌‌"Better‌‌get‌‌to‌‌work"‌ ‌to‌‌appear.‌
18. ‌B‌‌-‌ ‌Parameters‌‌help‌‌programmers‌‌identify‌‌values‌‌that‌‌are‌‌passed‌‌into‌‌a‌‌function‌‌because‌
they‌‌are‌‌a‌‌type‌‌of‌‌formal‌‌argument‌‌in‌‌which‌‌a‌‌special‌‌kind‌‌of‌‌variable‌ ‌is‌‌used‌‌in‌‌a‌
procedure‌‌to‌‌refer‌‌to‌‌one‌‌of‌‌the‌‌pieces‌‌of‌‌data‌‌provided.‌
19. ‌D‌‌-‌‌Both‌‌conditions‌‌have‌‌to‌‌be‌‌true‌‌for‌‌the‌‌AND‌‌expression‌‌to‌‌evaluate‌‌to‌‌true.‌
20. ‌A‌ ‌-‌‌An‌‌expression‌‌is‌‌a‌‌combination‌‌of‌‌values‌‌and‌‌functions‌‌that‌‌are‌‌combined‌‌and‌
interpreted‌‌by‌‌the‌‌compiler‌‌to‌‌create‌‌a‌‌new‌‌value.‌