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Operating Systems
Operating systems, both proprietary and open-source, include those produced by Microsoft, Linux, and Apple Mac
4,423 Questions
Define different types of system calls?
Types of System Calls
The main types of system calls are as follows:
Process Control: These types of system calls are used to control the processes. Some examples are end, abort, load, execute, create process, terminate process etc.
File Management: These types of system calls are used to manage files. Some examples are Create file, delete file, open, close, read, write etc.
Device Management: These types of system calls are used to manage devices. Some examples are Request device, release device, read, write, get device attributes etc.
Information Maintenance: These types of system calls are used to set system data and get process information. Some examples are time, OS parameters, id, time used etc.
Communications: These types of system calls are used to establish a connection. Some examples are send message, received messages, terminate etc
What is the purpose of a network operating system?
It is basicaly the spine of your computer. Its purpose is to run programs and such. Without it youd just have a box and a screen with fancy wires.
Where does operating system reside?
The operating system resides in secondary memory i.e., hard disk.when we boot our computer it is loaded into Primary memory i.e.,RAM and then loaded,this process is called booting
What is the purpose of the command interpreter?
It reads commands from the user or from a file of commands and executes them, usually by
turning them into one or more system calls. It is usually not part of the kernel since the command
interpreter is subject to changes.
Batch system in operating system?
Good morning teachers and my all friends let us start with the INTRODUCTION of BATCH SYSTEM .you all may be knowing what is batch system but let me inform you that it is an operating system in which interaction between user & processor is limited or there is no interaction at all during the execution of work. Data & programs that need to be processed are bundled & collected as a batch & executed together.
Difference between dos and dos shell?
MS-DOS ended with Windows NT. It used file command.com to interpret all DOS commands. Win 2000, XP, Vista use a DOS Shell which emulates DOS but is not really DOS.
What are the art history operations?
Step One: Description
Step Two: Analysis
Step Three: Interpretation
Step Four: Judgment
What is unique to each operating system?
Their Serial Numbers are all different; They all have a Different IP Address and MAC Address as well.
What are the sizes of operating systems?
The amount of disk-space taken up by the operation system (OS) can vary considerably. Though MicroSoft Windows takes up a lot of space, there are Linux type OSs that take up very little space. One such that springs to mind is, 'Damn Small Linux' (DSL) 50MB or less, that can boot off a USB flash drive or CD disk.
What system requirements are needed to install Filezilla?
The system requirements for running Filezilla would be Windows Vista or higher. You need at least 256 MB of ram to hold the information. It is an FTP client and holds the files in a separate area other than on your computer.
What is the Windows operating system?
As of early March 2011, the next MS Windows Operating System is Windows 8, which is expected to be released sometime in 2012.
What to do when it appears system alert and it says active spyware?
Well if you have an Antivirus protection it will probably tell you that its going to get rid of them and then they will be gone. Now if you don't have antivirus protection then get one that is like popular or something cause if you get one of those wierd named ones you've never heard of then you might be downloading another spyware into your computer!
Can you load an operating system in a hard drive that has not been formatted?
No. Operating systems need the system to be formatted / partitioned in order to properly arrange and store their data on the disk.
How the page faults are handled by an operating system?
We are have a two dimensional array, A: array[0..199,0..199] of characters. The contents of the array are stored in memory in row-major order starting at memory address 200. (i.e. A[0,0] is at address 200, A[0,1] is at address 201, ... A[0,99] is at address 299, A[1,0] is at address 300, etc.). In our computer each page of memory consists of 400 bytes (1 character takes up 1 byte), and there are three physical frames available to a process, one of which is taken up by the code segment currently being run. Assuming only the code segment page is initially loaded into memory, and an LRU page replacement algorithm is being used, determines how many page faults are caused by the array accesses in the following two code segments: // Code Segment A: for(j=0;j<=199;++j) for(i=0;i<=199;++i) A[i,j] = 'x';
// Code Segment B: for(i=0;i<=199;++i) for(j=0;j<=199;++j) A[i,j] = 'x'; // Code Segment A: for(j=0;j<=199;++j) for(i=0;i<=199;++i) A[i,j] = 'x';
What is a small program that tells the operating system how to communicate with a specific device?
Driver
What operating system supports two or more processors running programs at the same time?
A multiprocessor OS. Mac OS, Windows, and Linux all currently support this(as well as many others).
When a user runs two or more programs at the same time on a computer with your central processor?
This is known as multi-tasking. Although a single-core CPU can only do one thing at a time, it switches between the various running programs so quickly that they appear to run simultaneously. CPUs that have multiple cores can obviously do more things at once, but multi-tasking environments always run far more programs than there are cores so the individual cores still have to rapidly switch between their allotted tasks.
Who administers the operations and activities of the CCC?
administered by the Agricultural Stabilization and Conservation Service (ASCS), an organization within the Department of Agriculture. The operations of the CCC are governed by the Food Security Act of 1985
Difference between contingency operation and emergency operation?
Contingencies operations take into account s ituations not being part of nominal operations but already foreseen.
Emergency is a typical unforeseen contingency situation for which a specific emergency plan must be issued.
PC laptop for a 17 year old university student?
Laptops are not completely necessary for schoolwork, though they help quite a bit. Many students prefer to bring laptops to school and write papers or do research on their computer. Then, when they go home, they have all their work there with them on their computer. If a student had to use a school computer or write by hand, he or she would have to spend lots of time transferring data onto his desktop computer. When buying a laptop, it is important to think about what operating system the student would prefer to use. Apples tend to be more expensive than PCs, but you may want to get an Apple laptop if the student interacts frequently with an Apple network or use Apple programs. You may want to look into what kind of software the student needs to succeed in school and which operating system it is designed for. Some schools also have promotional agreements with computer companies which can help you get a good deal. Also look at what kind of software comes preloaded on the system, to see if it will meet your needs or if an additional outlay of cash is required to purchase software. For example, a student will most likely need word processing software for writing papers. If the computer does not come with that software preloaded, he or she will have to buy it.
Advantages of single user operating system?
- In single user there will no confusion in computer system .
- It is easy to use .
- The posibility of damaging the system is less .
- In single user only one user can use the system at one time
User view of operating system?
The user view of the computer varies by the interface being used. Most computer users sit in front of a PC, consisting of a monitor, keyboard, mouse and system unit. Such a system is designed for one user to monopolize its resources, to maximize the work that the user is performing. In this case, the operating system is designed mostly for ease of use, with some attention paid to performance, and none paid to resource utilization.
Some users sit at a terminal connected to a mainframe or minicomputer. Other users are accessing the same computer through other terminals. These users share resources and may exchange information. The operating system is designed to maximize resource utilization.
Other users sit at workstations, connected to networks of other workstations and servers. These users have dedicated resources at their disposal, but they also share resources such as networking and servers.
Recently, many varieties of handheld computers have come into fashion. These devices are mostly standalone, used singly by individual users. Some are connected to networks, either directly by wire or through wireless modems. Due to power and interface limitations they perform relatively few remote operations. These operating systems are designed mostly for individual usability, but performance per amount of battery life is important as well.
