Q1) Any CFC that does not explicitly extend another CFC implicitly extends java.lang.Object

1. T
2. F

Q2) You have an array of blogPost objects in a Blog class. You need to create a remove method that will be passed a blogPost object. What is the correct way of determining whether two references point to the same object?

1. EQ
2. IS
3. equals()
4. ==
5. ===
6. None of the above

Q3) A "mix-in" refers to what?

1. Another way of referring to an object created with the cfinterface tag
2. A public method that is shared among objects
3. A class that extends one or more other classes
4. A method or series of methods that is "injected" into an object
5. None of the above

Q4) Polymorphism is a key feature of OO languages. Since ColdFusion doesn't support method overloading, can it truly be said to support polymorphic behavior?

1. Yes
2. No

Q5) The decorator design pattern is best used to...

1. hide certain functions from the outside world, while exposing them to "trusted classes"
2. add desired functionality to base objects
3. wrap a layout "skin" on presentation classes
4. provide an automatic "display" method for basic CRUD functions
5. None of the above

Q6) An abstract class is one that...

1. cannot be instantiated
2. can hold methods, but no data
3. cannot be extended
4. cannot be called remotely

Q7) UML is primarily valuable for UML engines to generate code.

1. T
2. F

Q8) A "domain model" provides for...

1. A rules-based business logic engine
2. A set of constraints to be used in workflows
3. A software simulation of the "domain" under study
4. A set of classes that, when instantiated, produce a (hopefully useful) application
5. None of the above

Q9) "Lazy loading" describes the practice of:

1. loading variables as they are needed
2. dynamic instantiation of objects as the System Memory Module indicates memory availability
3. delay caused by asynchronous loading of page components
4. use of "stub" objects to fill an incomplete object
5. None of the above

Q10) A layered architecture is one in which...

1. Procedural and objects are intermingled
2. Logic is done in objects and presentation is done in a presentation language (typically HTML)
3. Multiple applications share a common data store
4. The application consists of a domain model, a persistence layer, and an Adapter Service
5. None of the above

Q11) Aggregation differs from composition in that...

1. Aggregating objects gain features by joining independent objects while compositing objects gain features by extending other classes
2. Aggregating objects must be instantiated by a factory or by an Inversion of Control (IOC) container while compositing objects may be instantiated directly
3. Aggregating objects can handle their own object instantiation while compositing objects must be given other objects upon instantiation
4. Aggregating objects have an existence independent of their members, while composite objects do not.
5. None of the above

Q12) A subclass's relationship to its superclass is one of:

1. Aggregation
2. Dynamic linking
3. Strict encapsulation
4. Abstract
5. Specialization
6. None of the above

Q13) A extends B. B extends C. C implements D and E. D extends F. Which of the following is NOT true?

1. A is a subtype of F
2. F is a supertype of A
3. A and B can be passed to a method expecting an object of type E.
4. Any method that expects an object of type C can be passed an object of type A
5. Any method that expects an object of type D can be passed an object of type F

Q14) Encapsulation occurs when a class's constructor is private, restricting access only to latent members of the class's supertype(s)

1. T
2. F

Q15) A CFC represents a data type

1. T
2. F

Q16) The Liskoff Substitution Principle states that...

1. All objects that pass the Turing Test are interchangeable
2. An object's may not have more restrictive access on overridden methods than its overridden supertype
3. An object that extends another object may be used in place of that object
4. An object may be used in place of another object provided that both objects reside on the same architectural layer.
5. An object that extends another object may override or "substitute" its method for its parent.
6. None of the above

Q17) A class that cannot be mapped to a dataschema directly is said to be transient.

1. T
2. F

Q18) Fill in the blank. Alan Kay once remarked, "I invented the term 'object-oriented' and I can tell you that I did not have _____ in mind."

1. Java
2. C++
3. C#
4. Pascal
5. Perl
6. None of the above

Q19) JavaScript is an object-oriented language.

1. T
2. F

Q20) A mock object is one that...

1. simulates the behavior of real objects in controlled ways.
2. provides method signatures but no method implementations.
3. cannot be instantiated.
4. replaces complex data types with simpler ones
5. None of the above

Q21) A facade typically subsumes multiple classes behind a single interface.

1. T
2. F

Q22) Method-chaining is common in Java, but is not allowed in ColdFusion

1. T
2. F

Q23) An explictly-typed language is one in which...

1. All data types belonging to the class may be resolved through composition
2. Data types not inherent in the language must be registered through method lookups
3. Classes inherit from a common type
4. Variable types must be declared prior to usage
5. A compiler checks for class invariant operations
6. None of the above

Q24) Objects are created on a part of computer memory known as the...

1. Stack
2. Heap
3. Object Queue
4. Instance
5. Virtual Class
6. None of the above

Q25) Inversion of Control occurs when an object defers method implementation to its superclass.

1. T
2. F

Q26) myObj.doThis().doThat().doTheOtherThing() is an example of:

1. Virtual functions
2. Inline instantiation
3. Metaprogramming
4. Method chaining
5. Nominative typing
6. None of the above

Q27) Methods should always return a value to provide the caller notification of the method's success.

1. T
2. F

Q28) Which design pattern that makes it possible to dynamically swap algorithms used to implement a particular function?

1. Strategy
2. Bridge
3. Flyweight
4. Adapter
5. Facade
6. None of the above

Q29) The term, Observer, defines a class that can be used by other classes but that cannot itself operate outside of its "internalized state" (Booch 94).

1. T
2. F

Q30) The term Interface-Driven Architecture refers to the need to "program to the interface and not to the implementation" (GoF).

1. T
2. F

Q31) "The user selects the Save option from the file menu in order to save the current document to disk. The system displays a "File Save" dialog which allows the user to specify the directory and filename. After the user specifies this information, the file is stored to disk." The preceding sentences are collectively known as

1. an annotation
2. a precedent requirement
3. a use case
4. an origin document
5. a contract
6. None of the above

Q32) Code that maps object graphs to database schemas is often referred to by the term:

1. ORM
2. ARP
3. DCOM
4. CORBA
5. RFF
6. None of the above

Q33) The term loose coupling refers to the practice of designing objects with a well-defined interface.

1. T
2. F

Q34) The term tight encapsulation is used when an object manages its own data persistence.

1. T
2. F

Q35) Polymorphism is an example of Polyamory.

1. T
2. F

Q36) The symbol for an unknown value in ColdFusion is...

1. null
2. nill
3. nil
4. ""
5. SYSTEM.NULL
6. None of the above

Q37) What would the following produce:

<cfset x = "Hello World" />
<cfset y = x>
<cfoutput>
	#y.equals(x)#
</cfoutput>

1. YES
2. NO
3. Error: "You have attempted to call a method on a scalar value."
4. Error: "Method 'equals' does not exist or cannot be reached."
5. Error: "Simple values cannot have methods attached to them at run time."
6. None of the above

Q38) What will this code produce?

<cfset x = "Hello World" />
<cfset y = CreateObject('java', 'java.lang.String').init("Hello World") />
<cfoutput>
#y#
</cfoutput>

1. Error: "You have attempted to call a method on a scalar value."
2. Hello World
3. Error: "Method 'init' does not exist or cannot be reached."
4. Error: "You must use [[cfinvoke]] to create a Java class."
5. Error: JavaCast required
6. None of the above

Q39) The "Open/Closed" Principle states that software should...

1. Be open to developers, but closed to system users
2. Be open with respect to what it accepts, but closed with respect to what it produces
3. Be open in its interface but closed in its implementation
4. Be open for extension but closed for modification
5. Be open to subclasses but closed to non-related classes
6. There is no such principle
7. None of the above

Q40) The "Dependency Inversion" Principle states that...

1. Modules that interact should do so through the agency of an "Inversion of Control" (IOC) container.
2. Abstractions should not depend on details, but details should depend on abstractions.
3. Subclasses may override their superclasses' behaviors so long as the method signature remains constant.
4. Subclasses may override their superclasses' behaviors so long as they do not restrict method access.
5. Components may defer implementation to modules but modules may not rely on components for their own implementation.
6. There is no such principle
7. None of the above

Q41) The "Modularity Equality" Principle states that...

1. Modules on the same architectural level should be interface-independent.
2. Modules used in a single application should be designed not to depend on each other.
3. Components in different modules with the same name must extend a common parent or implement the same interface.
4. Components within the same module must extend a common parent or implement the same interface.
5. There is no such principle.
6. None of the above

Q42) The set of public methods of an application may be said to be the...

1. UML
2. RSS
3. TLA
4. API
5. MVC
6. None of the above

Q43) A class invariant is a term that describes...

1. A class that cannot be extended
2. A class that cannot be instantiated
3. A constraint upon the class's state that must be maintained
4. A class constant that cannot be changed
5. A method that cannot be overridden
6. None of the above

Q44) What will this code do if run?

<cfcomponent displayname="StudentTeacher" extends="Teacher, Student">
   <cffunction name="init" access="private">
	  <cfargument name="name" />
	  <cfargment name="age" />
   </cffunction>
</cfcomponent>
 
<cfset obj = CreateObject('component', 'StudentTeacher') />

1. Error: Private init method prevents the class from being instantiated
2. The class will be instantiated but there will be no reference to it
3. Error: The class init method has no returntype
4. The variable, obj, will have a reference to an object of type StudentTeacher
5. None of the above or Pass

Q45) A "Turing Test" evaluates the type safety of a class or classes.

1. T
2. F

Q46) A implements B. B extends C. D implements B and extends E. E extends F. F implements B. Excluding the base "Component" class, how many supertypes does A have?

1. 2
2. 3
3. 4
4. 7
5. None of the above

Q47) Bob has a reference to an object, "myObject", of class A that extends B.cfc. Both A and B have methods called "doThis". If Bob wants to call B's "doThis" method, which code will do it?

1. myObject.super('doThis')
2. myObject.super.doThis()
3. myObject.call('doThis')
4. myObject.doThis(super)
5. None of the above

Q48) Which design pattern encapsulates an action request as an object?

1. Adapter
2. Command
3. Decorator
4. Composite
5. Visitor

Q49) Which design pattern defines the skeleton of an algorithm in a method, deferring some steps to subclasses?

1. Adapter
2. Flyweight
3. Builder
4. Template
5. Strategy

Q50) If A.cfc extends B.cfc and both have a method, "doThis", A's "doThis" may be said to have _____ B's "doThis".

1. overloaded
2. overridden

Score Quiz!