UAlbany ID: 001285074
1. Number of machines in the lab.
There are 32 machines in the lab.
2. Hours of Operation.
2 hours of operation (Day: Thursday timings: 5:45 to 7:05)
3. Hardware specifications of each computer:
a) hwinfo -
OPERATING SYSTEMS WEEK 3 ASSIGNMENT: - INSTALLING VIRTUAL BOX AND UBUNTU OS
WE FOUND ABOUT THE LINKS IN THE LAB SESSION WHILE WE INTERACTED WITH BIBHAV.
Step 1: Install VirtualBox from https:/www.virtualbox.org/wiki/Downloads
Step 2: Click on the First op
Information maintained by OS for process
process control block
OS virtualization of CPU for each process.
a program in execution
We should know about processes by
A process is an instance of a program in execution.
Batch systems work in terms of "jobs". Many modern process concepts are
still expressed in terms of jobs, ( e.g. job scheduling ), and the two terms
are often used interchangeably.
A computer p
Introduction: a typical scenario
Consider a user PC. When the system is booted, many processes
are secretly started, often unknown to the user.
For example, a process may be started up to wait for incoming
Modern operating systems can handle more than one
process at a time
System scheduler manages processes and their
competition for the CPU
Memory manager role is to manage sharing of main
memory between active processes
Starvation is the name given to the indefinite postponement of a process because it requires some resource
before it can run, but the resource, though available for allocation, is never allocated to this process. Starvation
is a bad thing as we
Key Terms in Concurrency
OS Design and Process
Process management in operating systems can be classified broadly into three
1. Multiprogramming involves multiple processes on a system with a single processor.
By William Stallings
Summary of Earlier
A computer platform
consists of a
Week 1 Notes
Operating systems act as a middle man or translator for hardware, software and the user. The true
operating system is the kernel which manages hardware and software resources; the shell the
user interface to the operating systems serv
Concurrency, Synchronisaton and Mutual Exclusion
Monitors and Message Passing
CS3008 Operating Systems
A monitor is a software construct that serves
enforces mutual exclusion of concurrent access to
shared data objects
OS LAB ASSIGNMENT- WEEK 4
nasm , build-essential , and qemu by using the command
Create a file boot.asm with the following code:
3. We inserted this code into the command line to assemble the file into a
binary file that the computer can act
History of computing
As computers came to existence they could process only one program at a time. Also, they were few firms
that used to use computers; these firms had to maintain different co
Think of sewing needles as the processors and the threads in a program as
the thread fiber.
If you had two needles but only one thread, it would take longer to finish the
job (as one needle is idle) than if you split the thread in
What is Speech Recognition?
engineering,speech recognition is the
translation of spoken words into text. It is also
known as "automatic speech recognition" (ASR),
"computer speech recognition", or just "speech
to text" (ST
Software Quality and
Computer Engineering Department
Background and Motivation
What is? : Software Quality is degree to which a
system, system component, or process meets
specified requirements or meets cus
Operating systems homework- Week 8
8.1 Suppose the page table for the process currently executing on the processor looks like
the following. All numbers are decimal, everything is numbered starting from zero,
and all addresses are memory byte addresses. T
What are three objectives of an OS design?
An OS is a program that controls the execution of application programs and acts as
an interface between applications and the computer hardware. It can be thought of
as having three objectives:
Convenience: An OS
Os chap 3
3.1 What is an instruction trace?
Ans: We define a perfect instruction trace as a continuous record of CPU instruction execution, including
operating system code and context switches, that has been gathered from an unperturbed system and is
ICSI 500 Operating Systems
(7.1) In Section 2.3, we listed five objectives of memory management, and in Section
7.1, we listed five requirements. Argue that each list encompasses all of the concerns
addressed in the other.
Chapter 2: Processes - Exercises
1. What are the differences between multiprogramming and time-sharing?
Multiprogramming - When one job needs to wait for I/O, the processor can
switch to the other job
Time Sharing multiple users simultaneously acc