Question 1

An object's _____ are the tasks or functions that the object performs when it receives a command to do so.
A)roles
B)utilities
C)instances
D)methods

Accepted Answer

The term that describes the tasks or functions that an object can perform when it receives a command is "methods". Therefore, the correct answer is D) methods. The other options (A) roles, (B) utilities, and (C) instances do not accurately describe an object's capabilities in the same way that methods do.

Question 2

After one identifies a system's objects, classes, and relationships, one should develop a(n) object relationship diagram that provides an overview of the system.

Accepted Answer

An object relationship diagram (also known as an object diagram) is used to provide an overview of the system's objects, their classes, and their relationships. It is a visual representation of the system's current state and can be used to map out the system's behavior and structure.

Question 3

A method is like a blueprint, or template, for all the objects within a class.

Accepted Answer

class

Question 4

A(n) _____ is a group of similar objects.
A)aggregate
B)concatenation
C)class
D)packet

Accepted Answer

A class is a group of objects that belong to the same category or share similar properties. An aggregate refers to a collection of objects or entities that are grouped together, but they may not necessarily be similar. Concatenation is the act of joining two or more things together, and a packet refers to a unit of data that is transmitted over a network. None of these terms perfectly describe a group of similar objects, but a class is the most appropriate option.

Question 5

Class diagrams evolve into code modules, data objects, and other system components.

Accepted Answer

Class diagrams are a visual representation of the system's components and relationships. These diagrams can be used as a basis for generating code modules, data objects, and other system components during the development process. Therefore, class diagrams do evolve into code modules and other system components.

Question 6

A(n) _____ is a specific member of a class.
A)key
B)index
C)file
D)instance

Accepted Answer

An instance is a specific object created from a class. It has its own set of data and attributes. Therefore, D is the best choice as it is the most specific and accurate term in the given options.

Question 7

By limiting access to internal processes, an object prevents its internal code from being altered by another object or process.

Accepted Answer

By limiting access to its internal methods and properties, an object can prevent other objects or processes from altering its internal code. This is known as encapsulation and is a key concept in object-oriented programming.

Question 8

Some objects might have a few attributes; others might have dozens.

Accepted Answer

Some objects can have many attributes while others can have a few. The number of attributes is not fixed and can vary depending on the object.

Question 9

A car performs a(n) _____ called OPERATE WIPERS when it is sent a message with the wiper control.
A)method
B)role
C)command
D)objective

Accepted Answer

The answer of A car performs a(n) _____ called OPERATE...

Question 10

In a state transition diagram, the circle at the right with a hollow border is the initial state.

Accepted Answer

final

Question 11

When use cases are identified, all the related transactions should be kept separate.

Accepted Answer

The answer of When use cases are identified, all the...

Question 12

_____ is a widely used method of visualizing and documenting an information system.
A)Unified Modeling Language (UML)
B)Java Virtual Machine (JVM)
C)UNiplexed Information and Computing System (UNIX)
D)Multimedia Logic (ML)

Accepted Answer

Unified Modeling Language (UML) is a standard visual modeling language used for documenting and designing software and information systems. It is widely used in software development to represent a system's architecture or design in a way that is easy to understand and communicate. The other options listed do not relate to visualizing or documenting information systems in the same way that UML does.

Question 13

A black box does not want or need outside interference.

Accepted Answer

A black box is designed to operate independently and autonomously, without any external interference or control. Its purpose is to gather and record data without being influenced by outside factors.

Question 14

Just as objects are similar to adjectives, attributes resemble verbs that describe what and how an object does something.

Accepted Answer

The answer of Just as objects are similar to adjectives,...

Question 15

An object has certain _____, which are characteristics that describe the object, such as the make, model, and color of a car.
A)keys
B)attributes
C)indices
D)elements

Accepted Answer

Attributes are characteristics that describe an object. Keys are used to uniquely identify records in a database. Indices help optimize queries for faster retrieval. Elements are used to describe specific parts of a larger whole, such as individual items in an array.

Question 16

Use cases cannot interact with other use cases.

Accepted Answer

The answer of Use cases cannot interact with other use...

Question 17

A class diagram resembles a horizontal flowchart that shows the actions and events as they occur.

Accepted Answer

A class diagram is a static representation that shows the structure of a system, including classes, attributes, methods, and relationships among objects. It does not show the actions and events as they occur.

Question 18

In a state transition diagram, the states appear as rounded rectangles with the state names inside.

Accepted Answer

States in a state transition diagram are represented by rounded rectangles with the state names inside.

Question 19

The same message to two different objects produces the same results.

Accepted Answer

The answer of The same message to two different objects...

Question 20

A(n) _____ represents a person, a place, an event, or a transaction that is significant to the information system.
A)object
B)instance
C)class
D)model

Accepted Answer

An object represents a person, a place, an event, or a transaction that is significant to the information system. Option B (instance) and Option C (class) are also related to information systems but do not specifically define the significance of a person, place, event, or transaction. Option D (model) refers to a representation or abstraction of an object or system, but does not specifically describe the significance of a person, place, event, or transaction within the information system.

Quiz 6: Object Modeling

An object's _____ are the tasks or functions that the object performs when it receives a command to do so.

After one identifies a system's objects, classes, and relationships, one should develop a(n) object relationship diagram that provides an overview of the system.

A method is like a blueprint, or template, for all the objects within a class.

A(n) _____ is a group of similar objects.

Class diagrams evolve into code modules, data objects, and other system components.

A(n) _____ is a specific member of a class.