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Composition.docx
Composition.docx
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Composition.docx-Composition 1. The use of referen...
Composition.docx-Composition 1. The use of references
Composition.docx-Composition 1. The...
Composition.docx-Composition 1. The use of references
Page 1
Composition
1. The use of references to objects of preexisting classes as members of new objects is
called
.
a) inheritance
b) composition
c) polymorphism
d) None of the above.
Answer:
b
2. Composition:
a) Is a form of software reuse.
b) Is using an object reference as a class member.
c) Is a good design practice.
d) All of the above.
Answer:
d
3. Composition is sometimes referred to as a(n)
.
Page 2
a. isa relationship
b. hasa relationship
c. havea relationship
d. onetomany relationship
Answer:
b
Garbage Collection and Destructors
1. Failure to release resources when the program is no longer using them can cause
.
a) buffer overflows
b) resource leaks
c) exceptions
d) None of the above.
Answer:
b
2. A
can be defined in a class to perform termination housekeeping on an object
before the garbage collector reclaims the object’s memory.
a) destructor
b) property
c) garbage collector
d) None of the above.
Answer:
a
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