CMSC132 Fall 2005 Midterm 1 Grader Use Only 1 2 20 3 20 4 25 5 15 Total First Name Last Name Student ID Section time TA I pledge on my honor that I have not given or received any unauthorized assistance on this examination Your signature General Rules Read This exam is closed book and closed notes If you have a question please raise your hand Total point value is 100 points Answer essay questions concisely using 1 or 2 sentences Longer answers are not necessary and are discouraged WRITE NEATLY If we cannot understand your answer we will not grade it i e 0 credit 1 20 100 Problem 1 Software Development Testing 20 pts a 4 pts What is the main reason many software projects fail a Poorly trained programmers b Insufficient project funding c Complexity of projects d Slow computers e Insufficient computer memory b 4 pts What is the software life cycle c 4 pts What is the first phase of the software life cycle a Testing b Coding c Design d Specification e Documentation d 4 pts True or False According to the waterfall model a Design all algorithms before coding b Write test cases before coding c Use prototype implementation to refine design e 4 pts True or False According to the unified model a Design all algorithms before coding b Write test cases before coding c Use prototype implementation to refine design f 4 pts True or False Compared to program verification empirical testing a Handles larger programs b Always catches more errors c Ensures code is correct d Can be applied without examining code g 4 pts True or False a Black box testing requires good programmers b Code coverage is a measure of code testing c Pre conditions and post conditions are used for empirical testing 2 Problem 2 Object Oriented Design 20 pts h 4 pts State and behavior are two main qualities of objects in an object oriented system a What is the third quality b What is it used for c What is an example of its use in Java i 4 pts True or False Object oriented design a Produces faster programs b Produces smaller programs c Produces software without errors j 4 pts Abstraction and encapsulation are two principles of object oriented design a Define abstraction b Define encapsulation c Describe how object oriented design supports encapsulation k 4 pts Given the following problem description produce an object oriented solution Include as many details as possible Draw a UML class diagram you may write code for Java classes ONLY if you don t know UML Design a simulation of a basketball conference Each conference has 10 teams Each team has 12 players Each player has a specific height speed and accuracy Players know which team they belong to Some players are scholarship players Scholarship players need to record their current grade point average Players may be transferred between teams Teams play basketball games against other teams in the conference The result of each game is determined using a function based on the height strength speed and accuracy of the players on each team 3 Problem 3 Unified Modeling Language 20 pts l 4 pts Consider UML a What are class diagrams used for b What is an association c What is a dependency m 4 pts Given the following Java code draw a UML class diagram you may write code for Java classes ONLY if you don t know UML public class Propeller public double thrust public int mileage public class Engine public double power public int mileage public class Plane public Propeller myPropellers public Engine myEngine public class Pilot public int flightHours public void fly Plane p public class FighterPilot extends Pilot public int rank A B C D 4 E n 4 pts Consider the UML diagram on the right a Which class contains class D b Which class uses class D c Which class may change if class D changes d How many instances of class D does class F have e Can class A be used wherever Class C is used f Can class E be used wherever Class C is used 4 F Problem 4 Java Programming 25 pts o 4 pts True or False a Using and equals always return the same result b Variables of type Integer and int are both references c Autoboxing creates an Integer object from an int d Exceptions are used to capture run time errors p 4 pts Write Java code for a Card class a Use an enumerated type for the suits in a card deck Spades Hearts Diamonds Clubs b Implement the comparable interface for Card objects so that the suits are ranked in the order listed Spades Hearts Diamonds Clubs q 4 pts Write Java code for a Deck class a Uses an ArrayList to store multiple Card objects b Use an anonymous inner class to generate an Iterator over Card objects in the Deck Problem 5 Graphic User Interfaces 15 pts r 4 pts a b c d In a graphics user interface What is the model What is the view What is the controller Why should these be kept separate s 4 pts a b c Event driven programming What are events Why use events for GUIs How are events handled in Java Swing t 4 pts Given Java Swing code for a GUI understand the different roles of each part 5
View Full Document
Unlocking...