BCS2233 OOP: Assignment 3

1. Explain the following terms:-

a). Class
b). Object
c). Instances
d). Public
e). Private
f). Super Class
g). Inheritances.

2.  Write a class for each of the following specifications. In each case, include a constructor that set each member values to 0 and a member method named showdata() that can be used to display member values.

a). A class named time that has integer data members named secs, mins, and hours.

b). A class named rectangle that has integer data members named height and length.

3. Create a base class named Point consisting of x and y data members representing point coordinates. From this class, derive a class named Circle with another data member named radius. For this derived class, the x and y data members represent a circle’s centre coordinates. The member method of the Point class should consist of a constructor that set the value for x and y to 0, an area() method that return 0, and distance() method that returns the distance between two points, (x1,y1) and (x2,y2), where

Additionally, the derived class should has an overided method named area() that return’s a circle area

Area = 3.14 x radius2.

Draw UML diagram that for the class Point and class Circle.

BCS2233 OOP: LAB WEEK 12

Tuliskan semula  program java berikut dan 'run'. Tuliskan output yang terhasil. Yang manakah di katakan sebagai  'constructor' (dalam program java).

BCS1333 Markah quiz 2 ujian 1 (ulangan)

Berikut adalah markah bagi quiz 2  test 1 (ulangan) 

NO	NAME	COURSE	MATRIC	quiz 2 (10)	Test1(#2) 100%
1	CHE KU NOR FARAH AIN BT CHE KU HASSAN	1BCBM	14B04001	10	87.2
2	NUR ATHIRA BT AMAN	1BCBM	14B04015	10	95.7
3	NOR AIN AQIRA BT KAMAR	1BCBM	14B04013	10	95.7
4	NORFARHANA BT OMAR	1BCBM	14B04014	10	93.6
5	NURUL AMALINA BT ISMAIL	1BCBM	14B04019	10	93.6
6	SITI NURFARHAN BT KAMAR JEHAN	1BCBM	14B04024	10	100.0
7	NOOR NAFIZAH BT MOHD RODZI	1BCBM	14B07012	10	74.5
8	NURUL DIYANA BT YAHAYA	1BCBM	14B04029	8	93.6
9	SYAZWANI BT NGAH @ MOHD NOOR	1BCBM	14B04026	8	95.7
10	NAJWA SYAHIRAH BT SUHAIDI	1BCBM	14B04011	10	93.6
11	NURUL AINA MADIENA BT MAD DAHAN	1BCBM	14B04018	10	93.6
12	HANI DALILA BT RADZALI	1BCBM	14B04003	10	87.2
13	NURUL ZUHAIRAH BT RAZALI	1BCBM	14B04022	10	93.6
14	NUR FATIMAH BT MOHD ROSLY	1BCBM	14B04017	10	85.1
15	SAZARUL SYAFIQAH BT ZAKARIA	1BCBM	14B04023	10	95.7
16	NURUL SHAHIRAH BT MOHD NOOR	1BCBM	14B04021	8	93.6
17	MOHAMOD IKHWAN BIN MOHD ZUKI	1BCBM	14B04004		0.0
18	MUHAMMAD THAQIF BIN MOHD TAUFEK	1BCBM	14B04030	9	83.0
19	KAMARUL AIMAN BIN KAMARAZI	1BCBM	14B04028	4	80.9
20	FAIZ NOOR HAFIZ BIN MOHD ALWE	1BCBM	14B04027	4	91.5
21	IZZAT ARSYAD BIN AWANG	1BCBM	14B04005	10	84.0
22	MUHAMMAD RIZAL RIDZUAN BIN HASHIM	1BCBM	14B04009	5	72.3
23	KAMARUL NAZERI BIN IBRAHIM	1BCBM	14B04006	3	97.9
24	MUHAMMAD ALEFF BIN HAZNI	2BCNS	14B07010	10	91.5
25	MOHAMAD FAHMI BIN RAFEZIN	2BCNS	14B04007	10	85.1
26	MOHAMAD IKHWAN BIN MOHD ZUKI	2BCNS	14B07004	10	95.7
27	MOHD IZAHAR BIN ZAKARIA		14B07006	10	89.4
28	MUHAMMAD NAFIZ IKHSAN BIN MUHAMMAD		14B07027	10	93.6
29	MOHD HISHAMUDDIN WAHAB		12B07110		76.6

BCS1333 Assignment 2 & Assignment 3

ASSIGNMENT 2

1. Describe the differences among short-term and long-term scheduling.

2. Describe the actions taken by a kernel to context-switch between processes.

3. The benefits of multithreaded programming can be broken down into four major categories (Responsiveness, Resources Sharing, Economy, utilization of multiprocessor): Briefly explain each of them.

4. Explain the three models of multithreading.

ASSIGNMENT 3

1.      There are five criterions that have been suggested for comparing CPU scheduling algorithms. List and briefly explain each of them.

2.      Consider the  following set of processes that arrive at time 0, with the length of the CPU burst given in milliseconds:

Process                        Burst Time                         Priority

P1                                 15                                3

P2                                 10                                1

P3                                 3                                  3

P4                                 5                                  2

P5                                 9                                  4

The processes are assumed to have arrives in order P1,P2,P3,P4,P5 all at time 0.

a.      Draw four Gantt charts that illustrate the execution of these processes using the following scheduling algorithms : FCFS, SJF, nonpreemptive priority ( a smaller priority number implies a higher priority), and RR (quantum = 5).

b.      What is the average waiting time of each process of the scheduling algorithms in part a?

c.        What is the turnaround time of each process of the scheduling algorithms in part a?

d.      Which of the algorithms in part a results in the minimum average waiting time (over all processes)?

3.      A file attribute is metadata that describes or is associated with a computer file. Typically there are 7 common file’s attributes. Briefly explain each of them.

4.      There are four (4) pieces of information are associates with an open file. Explain each of them

BCS2233 OOP: Lab Week 11 (13/4/2015)

Consider the following Java Program. Draw UML Class Diagram for each.

BCS1333 OS: 5 April 2015

'Test 1' akan di adakan pada ketetapan berikut:-

Tarikh : 12/4/2015

Masa : 8.30 am - 9:30 am

Chapter: 2- OS Structures, 3- Processes, 4: Threads

Latihan Chapter 5: CPU Scheduling

  Consider the following table 4.1. Four processes are arrived at time 0, with the length of the CPU burst given in milliseconds:

Process          Burst Time     _______ * Priority

P1                                10                                3

P2                                15                                1

P3                                3                                  3

P4                                5                                  2

*smaller priority number implies a higher priority

Table 4.1 List of processes that are arrived at time 0

The processes are assumed to have arrives in order P1, P2, P3, P4 all at time 0.

      I.        Draw FOUR (4) Gantt charts that illustrate the execution of these processes using the following scheduling algorithms: FCFS, SJF, Priority, and RR (quantum = 5).

BCS1333 OS : Assignment 2

1.Describe the differences among short-term and longterm scheduling.

2.Describe the actions taken by a kernel to context-switch between processes.

3.The benefits of multithreaded programming can be broken down into four major categories (Responsiveness, Resources Sharing, Economy, utilization of multiprocessor): Briefly explain each of them.

4. Explain the three models of multithreading.