IT3101

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• IT3101
• Object Oriented Systems Development

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Examination Procedure

• Examination Paper will consist of two parts.
• Part 1 1 ½ Hour paper consisting of Multiple
  Choice Questions
• Part 2 1 ½ Hour Paper consisting of Structured
  Questions

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Examination Procedure cont..

• Students will be given two Case Studies during
  the semester.
• There will be structured questions based on one
  of the Case Studies.

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IT3101 Model Question paper

• Already published on the web.
• see www.bit.lk or
• www.ict.cmb.ac.lk/bit.htm
• You will receive the model question paper
  including a model Case study before the
  examination.
• Other Case studies will also be send to you
  before the examination.

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Model Questions

• Model Paper Q (34)

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Which of these statements are correct according
to the given use case diagram

• (A) The trader and the sales person always play
  the same role in the system.
• (B) Both AnalyzeRisk and PrizeDeal are required
  to value the deal.
• (C) There may be customers with exceeded limits.
•  

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(A) The trader and the sales person always play
the same role in the system.
FALSE
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(B) Both AnalyzeRisk and PrizeDeal are
required to value the deal.
TRUE
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(C) There may be customers with exceeded limits.
TRUE
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• The trader and the sales person always play the
  same role in the system. False
• (B) Both AnalyzeRisk and PrizeDeal are required
  to value the deal. True
• (C) There may be customers with exceeded
  limits. True
• (a) All are correct.
• (b)  A and B are correct.
• (c)   A and C are correct.
• (d)  B and C are correct
• (e)   All are incorrect.
• Answer (d)

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Q (23) Match the statements in column B with
column A.

• Column A
• (i) State
• (ii)Behaviour
• (iii) Identity
• (iv)Class
• (v) Message
• passing

• Column B
• (A) Objects communicate with each other
• (B) Implemented by the set of operations for
  the object
• (C) Defined by the attributes and the
• relationships an object has with other
• objects.
• (D) Group of objects with common properties,
  common behaviour and
• common relationships to other objects.
• (E) Each object is unique.

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Q (25)

• Which of the following is the best description of
  the sequence diagram given above?
• When an instance of a
• (a) Person is asked for its assets, it sums the
  balances of each of its asset accounts.

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Q (25)

• Which of the following is the best description of
  the sequence diagram given above?
• When an instance of a
• (b) Customer is asked for its assets, it sums the
  balance of each of its asset Accounts.

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Q (25)

• Which of the following is the best description of
  the sequence diagram given above?
• When an instance of a
• (c) Person is asked for its assets, it returns
  the balance of its asset account.

15
Q (25)

• Which of the following is the best description of
  the sequence diagram given above?
• When an instance of a
• (d) Customer is asked for its assets, it returns
  the balance of its asset account.

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Q (25)

• Which of the following is the best description of
  the sequence diagram given above?
• When an instance of a
• (e) Person or Customer is asked for its
  assets, it sums the balance of each of its asset
  Accounts.

(a) Best description
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Q (18) Which of the following statement(s)
about C variables is (are) correct?

• (i) C variables are case sensitive and must
  begin with a letter.
• (ii) new is a valid variable.
• (iii) a1 and _byte are valid variables.
• (iv) C keywords cannot be used as variable
  names.

Wrong
Wrong
Wrong
Correct
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Q 28) Consider the following
program. include ltiostream.hgt  class cat int
itsAge, itsWeight public void
Meow()coutltlt"Meow" cat()coutltlt"Initialised
cat\n"itsAge0 cat()coutltlt"Destroy
cat\n" int getAge()return itsAge

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void main() cat frisky coutltlt"Frisky is a
cat who is " coutltltfrisky.getAge() coutltlt"
Years old.\n"  Which of of the following would
the output of the program be?
Display
Initialised Cat
cat()
Frisky is a cat who is
0
Years old.
Destroy cat
cat()
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(a)    It will give a compilation error. (b)   
Frisky is a cat who is 0 years old. (c)   
Initialised cat Frisky is a cat who is 0
years old. Destroy cat (d)    Initialised
cat Frisky is cat who is 0 years
old. (e)    None of the above.
Answer (c)
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Q 27) Consider the following program.   void main
() int i0 do
coutltlt"Loop"ltlti i break
while(igt100) Identify, from
among the following, the correct
descriptions. (a)    The loop is of the
non-terminating type.
Wrong
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Q 27) Consider the following program.   void main
() int i0 do
coutltlt"Loop"ltlti i break
while(igt100) Identify, from
among the following, the correct
descriptions. (b)    When executed the first line
that displays is Loop0
Correct
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Q 27) Consider the following program.  void main
() int i0 do
coutltlt"Loop"ltlti i break
while(igt100) Identify, from
among the following, the correct descriptions.
(c) If break is replaced with continue the loop
will never be terminated.
Wrong
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Q 27) Consider the following program.  void main
() int i0 do
coutltlt"Loop"ltlti i break
while(igt100) Identify, from
among the following, the correct descriptions.
(d) When executed the last line that displays is
Loop99
Wrong
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Q 27) Consider the following program.  void main
() int i0 do
coutltlt"Loop"ltlti i break
while(igt100) Identify, from
among the following, the correct descriptions.
(e)    The loop body will be repeated 100 times.
Wrong
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Q 26) Declaration of a new type called Cat is
illustrated below, class Cat int
itsAge int itsWeight void main()
What would happened when
compiling this program segment ? (a) It will
execute and the default message on the console
will appear.
Wrong
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Q 26) Declaration of a new type called Cat is
illustrated below, class Cat int
itsAge int itsWeight void main()
What would happened when
compiling this program segment ? (b)  It
will give compilations errors since the main()
function doesnt have any programming codes
to execute.
Wrong
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Q 26) Declaration of a new type called Cat is
illustrated below, class Cat int
itsAge int itsWeight void main()
What would happened when
compiling this program segment ? (c)    It will
give an error saying, Cat followed by void'
is illegal, is missing.
Correct
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Q 26) Declaration of a new type called Cat is
illustrated below, class Cat int
itsAge int itsWeight void main()
What would happened when
compiling this program segment ? (d)    It will
execute and no message is displayed.
Wrong
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Q 26) Declaration of a new type called Cat is
illustrated below, class Cat int
itsAge int itsWeight void main()
What would happened when
compiling this program segment ? (e)    It will
give an error saying missing storage class or
type specifiers.
Wrong
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Q 21) Which of the following is/are correct
regarding C?   (a)  Destructor takes the same
name as the class preceded by the tilde
character () (b)  Destructors cannot
take arguments. (c)   There is only one
destructor function for a class (d)   Destructor
function is called whenever the object
created using the constructor expires. (e)   One
can overload a destructor  
Correct
Correct
Correct
Correct
Wrong
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IT 3101 Structured Question Paper

• There will be 4 questions.
• Duration 1 ½ hours
• First question is based on one of the case
  studies given. This is a compulsory question.
• You need to answer two out of the other three
  questions

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Q2.(b) What would be the output of the following
program? include ltiostream.hgt class A public
A() coutltltIn Constructor A\n
A()coutltltIn Destructor A ) class B
public B()coutltltIn Constructor B \n
B()coutltltIn Destructor B  class C
public A, public B public C() coutltltIn
Constructor C\n C()coutltltIn Destructor C
 
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• void main()
• C ob

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• OUPUT
• In Constructor A
• In Constructor B
• In Constructor C
• In Destructor C In Destructor B
• In
  Destructor A