1. According to the diagram, what classes are used in this use case? Write down operations and instance variables for each of the classes using the follow format: Class name: xx..xx Attributes: + xx..xx ...... - xx..xx ...... Operations: + xx..xx

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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The following is a sequence diagram of part of a course register system which describes the use case Register a Course.

1. According to the diagram, what classes are used in this use case? Write down operations and instance variables for each of the classes using the follow format:
Class name: xx..xx
Attributes: + xx..xx
......
- xx..xx
......
Operations: + xx..xx
......
- xx..xx
......

 

2.According the the diagram, what is the multiplicity of the association between the class CourseSection and Course? Is this association bi-directional and why?

 

3. Explain the meanings of the following items in the diagram:
aStudent:Student
hasPrerequisite:=hasPassedCourse(prereq),
opt[hasPrerequisite]

:GUI
:CourseSection
requestToRegister
opt [hasPrerequisite]
:Registration
create
hasPrerequisite:-hasPassed Course(prereq)
addToRegistration List
I
aStudent:Student
I
1
prereq: getPrerequisite
addToSchedule
1
:Course
Transcribed Image Text::GUI :CourseSection requestToRegister opt [hasPrerequisite] :Registration create hasPrerequisite:-hasPassed Course(prereq) addToRegistration List I aStudent:Student I 1 prereq: getPrerequisite addToSchedule 1 :Course
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