Introduction to computer science exam review with Questions and Correct Answers 2025.

Introduction to computer science exam
review with Questions and Correct
Answers 2025




What ,is ,a ,program ,- ,CORRECT ,ANSWER-A ,set ,of ,instructions ,for ,a ,task ,that
,are ,then ,executed ,by ,a ,computer ,and ,complete ,the ,set ,task.


What ,is ,computer ,hardware ,- ,CORRECT ,ANSWER-The ,physical ,parts ,of ,a
,computer. ,Ex: ,keyboard, ,monitor, ,memory ,cards


What ,are ,the ,3 ,main ,parts ,of ,a ,computer ,system? ,- ,CORRECT ,ANSWER-System
,unit, ,Keyboard, ,and ,the ,Monitor


What ,part ,of ,a ,computer ,system ,runs ,programs? ,- ,CORRECT ,ANSWER-CPU,
,the ,central ,processing ,unit.


How ,does ,a ,computer ,store ,data? ,- ,CORRECT ,ANSWER-It ,uses ,2 ,different
,types ,of ,memory ,secondary ,and ,primary. ,Data ,and ,programs ,are ,stored ,in ,the
,secondary.


How ,does ,a ,program ,work? ,- ,CORRECT ,ANSWER-A ,program ,is ,written ,in ,a
,language ,that ,computers ,can ,interpret ,and ,can ,act ,out ,the ,task ,it ,is ,asking ,it
,to ,do.


Give ,5 ,examples ,of ,programming ,languages. ,- ,CORRECT ,ANSWER-Javascript
Coffee ,script
C++
Python
Ruby

What ,is ,pseudocode ,in ,programming ,- ,CORRECT ,ANSWER-Is ,a ,description ,of
,what ,a ,computer ,program ,or ,algorithm ,must ,do, ,it ,is ,written ,in ,a ,neutral
,language ,that ,people ,can ,read ,instead ,of ,programming ,languages.

, What ,is ,a ,flowchart ,in ,programming ,- ,CORRECT ,ANSWER-A ,chart ,that ,shows
,the ,orders ,or ,steps ,in ,a ,program ,and ,how ,the ,program ,
will ,be ,executed.

What ,is ,input ,in ,programming ,- ,CORRECT ,ANSWER-Information ,given ,to ,the
,computer


What ,does ,it ,mean ,to ,process ,in ,programming ,- ,CORRECT ,ANSWER-To
,process ,means ,the ,computer ,is ,executing ,the ,program ,that ,it ,was ,told ,to ,do.


What ,is ,output ,in ,programming ,- ,CORRECT ,ANSWER-The ,information ,the
,computer ,gives ,back ,from ,its ,input.


What ,are ,variables ,in ,programming ,- ,CORRECT ,ANSWER-A ,variable ,is
,something ,that ,stands ,for ,something ,else ,or ,equals ,something ,else. ,
It ,can ,change ,based ,on ,conditions ,or ,new ,information ,the ,computer ,gets.

What ,is ,a ,sequence ,structure ,in ,programming ,- ,CORRECT ,ANSWER-An ,action
,or ,event ,leads ,to ,another ,action ,or ,event.


What ,are ,comments ,in ,programming ,- ,CORRECT ,ANSWER-Notes ,that ,are ,not
,read ,by ,the ,computer. ,Used ,to ,make ,code ,easier ,to
,understand.


What ,is ,a ,module ,in ,programming? ,- ,CORRECT ,ANSWER-It ,is ,a ,part ,of ,a
,program. ,Programs ,are ,made ,up ,of ,modules ,and ,each ,module ,is ,
linked ,to ,one ,another ,when ,the ,program ,gets ,put ,together. ,A ,module ,can ,have
,one ,or ,
several ,components.

What ,is ,a ,top ,down ,approach ,in ,programming? ,- ,CORRECT ,ANSWER-Taking
,steps ,little ,by ,little ,and ,breaking ,down ,the ,problem ,into ,easier ,smaller
,problems


What ,is ,a ,hierarchy ,chart ,in ,programming? ,- ,CORRECT ,ANSWER-It ,shows ,the
,order ,of ,a ,program. ,It ,is ,when ,the ,main ,idea ,is ,broken ,down ,into
,subcategories.


What ,is ,a ,local ,variable ,in ,programming? ,- ,CORRECT ,ANSWER-Variables ,that
,are ,defined ,for ,a ,certain ,function ,and ,can ,only ,be ,used ,within ,that ,
function

What ,is ,duplicate ,code ,in ,programming? ,- ,CORRECT ,ANSWER-Code ,that
,appears ,multiple ,times ,throughout ,a ,program ,or ,many ,programs
,owned ,by ,the ,same ,entity. ,It ,is ,undesirable.