Introduction to Computer Science semester 2 final Exam with Questions and Correct Answers 2025.

Introduction to Computer Science
semester 2 final Exam with Questions and
Correct Answers 2025




Which ,of ,the ,following ,best ,describes ,how ,computing ,devices ,represent
,information? ,- ,CORRECT ,ANSWER-A ,computer ,represents ,data ,as ,bits ,which
,is ,either ,a ,0 ,or ,a ,1


Which ,of ,the ,following ,is ,NOT ,true ,of ,how ,computers ,represent ,complex
,information? ,- ,CORRECT ,ANSWER-Abstraction ,helps ,represent ,complex
,information ,by ,surfacing ,complexity ,that ,might ,otherwise ,be ,hidden


When ,visiting ,a ,museum ,Lian ,takes ,a ,photo ,of ,a ,painting ,with ,a ,smartphone
,which ,stores ,the ,photo ,as ,an ,image ,file. ,Which ,of ,the ,following ,best ,describes
,the ,differences ,between ,the ,painting ,itself ,and ,the ,photo ,of ,the ,painting ,stored
,on ,the ,smartphone? ,- ,CORRECT ,ANSWER-The ,photo ,is ,a ,digital ,representation
,of ,the ,analog ,painting


Your ,computer ,uses ,4 ,bits ,to ,represent ,decimal ,numbers ,(0, ,1, ,2, ,3 ,and ,so ,on)
,in ,binary. ,What ,is ,the ,SMALLEST ,number ,for ,which ,an ,overflow ,error ,occur? ,-
,CORRECT ,ANSWER-16


Which ,of ,the ,following ,is ,true ,of ,how ,computers ,represent ,numbers? ,-
,CORRECT ,ANSWER-With ,a ,fixed ,number ,of ,bits ,some ,numbers ,are ,too ,large
,to ,represent ,in ,a ,computer ,which ,will ,lead ,to ,overflow ,errors.


Convert ,the ,binary ,(base-2) ,number ,1001 ,to ,decimal ,(base-10 ,- ,CORRECT
,ANSWER-9


Convert ,the ,decimal ,(base-10) ,number ,20 ,to ,binary ,(base-2). ,- ,CORRECT
,ANSWER-10100


Which ,of ,the ,following ,binary ,(base-2) ,numbers ,is ,LARGEST? ,- ,CORRECT
,ANSWER-11000000