COMP 249 Midterm questions and answers Object-Oriented Programming II Concordia University 2024

COMP 249 Midterm questions and
answers Object-Oriented Programming
II Concordia University 2024

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COMP-249 : Objected Oriented Programming, Summer

COMP 249 – Midterm -- Answer

Time : (1 hour 15 minutes)

Instructions:

No notes, books, calculators or other electronic devices are allowed.
Answer all questions on the notebook.

Identification:
Last Name:

First Name :

Student ID :

Signature:


Marking scheme:

Question Mark Question Mark
1 /2.5 21 /2.5
2 /2.5 22 /2.5
3 /2.5 23 /2.5
4 /2.5 24 /2.5
5 /2.5 25 /2.5
6 /2.5 26 /2.5
7 /2.5 27 /2.5
8 /2.5 28 /2.5
9 /2.5 29 /2.5
10 /2.5 30 /2.5
11 /2.5 31 /2.5
12 /2.5 32 /2.5
13 /2.5 33 /2.5
14 /2.5 34 /2.5
15 /2.5 35 /2.5
16 /2.5 36 /2.5
17 /2.5 37 /2.5
18 /2.5 38 /2.5
19 /2.5 39 /2.5
20 /2.5 40 /2.5


1

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Total /100



Section 1 (Question 1-28) Multiple choice questions. If answers are more than one, the
question indicates [Check all correct answers]
1. The keyword extends indicates:

(a) encapsulation
(b) polymorphism
(c) inheritance
(d) none of the
above Answer: C

2. A derived class is also called a

(a) sub class
(b) super class
(c) base class
(d) all of the
above Answer: A

3. In Java, a derived class can have base class(es).

(a) one

(b) two
(c) three
(d) there is no
limit Answer: A




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