CS 410 Operating Systems
Homework 02
Review Questions (7 pts/ea)
2.1 What are three objectives of an OS design?
2.2 What is the kernel of an OS?
2.3 What is multiprogramming?
2.4 What is a process?
2.5 How is the execution context of a process used by the OS?
2.6 List and briefly explain five storage management responsibilities of a typical OS.
2.7 Explain the distinction between a real address and a virtual address.
2.8 Describe the round-robin scheduling technique.
2.9 Explain the difference between a monolithic kernel and a microkernel.
2.10 What is multithreading?
2.11 List the key design issues for an SMP operating system.
Problems: (8 pts the first two, 7 points the last one)
2.2 An I/O-bound program is one that, if run alone, would spend more time waiting for
I/O than using the processor. A processor-bound program is the opposite. Suppose a
short-term scheduling algorithm favors those programs that have used little processor
time in the recent past. Explain why this algorithm favors I/O-bound programs and
yet does not permanently deny processor time to processor-bound programs.
2.3 Contrast the scheduling policies you might use when trying to optimize a time-sharing
system with those you would use to optimize a multiprogrammed batch system.
2.4 What is the purpose of system calls, and how do system calls relate to the OS and to
the concept of dual-mode (kernel-mode and user-mode) operation?
SUBMISSION
Submit a DOCX or PDF document through Western Online with the answers to the questions or
problems typing the corresponding numbers and questions (or at least the numbers) in bold
and in the proper order before your answers.
Use a different font color for the numbers and questions (or at least for the numbers), than the
color used for your answers.
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