Monday, 29 April 2013
Question 1:
Let us point out some events that cause the kernel code to invoke in order to manage computer resources
(like I/O devices memory and storage management) and control user programs to prevent errors and
improper use of a computer system. Write their names.
[Marks : 02]
Question 2:
Operating System “XYZ” installed on a computing machine. .”ABC” serves as an intermediary between
the hardware of the system and users. During the execution of a program or process, CPU generates
different signals. You have to identify how do theses signals are handled by the operating system “XYZ”?
[Marks : 03]
Question 3:
General Electric (GE) is leading electronic company .They have 10 thousand employees. At the end of each
month they need to get payroll prints. Once payroll data are submitted to computer, left running without
human interaction.
Being a student of operating system, you know OS is also scheduled the jobs. If there are numbers of jobs
having same type and resource requirements that are ready to run. Keep in mindthe above scenario, you
need to identify in which system, these jobs are run easily.
[Marks : 05]
Question 4:
Categorize the following examples into Interrupt, signal and traps:
1. Ali is typing Alphabets in notepad by hitting keystroke.
2. Ayesha opening a folder from desktop by double clicking mouse.
3. Ahmad write a code in c language, like a=b/0.
4. Fatima is compiling a C program an error occursInvalid memory access or buffer overflow.
5. While running a program ,you press <Ctrl-C>.
[Marks : 0
