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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
When was operating system introduced?
I assume you mean "When was the first operating system introduced?" Seems to be in the 1950s. See the link below for a very detailed page.
What is the relationship between turnaround CPU cycle time and waiting time?
turn around time is the time taken for completing a particular job.
It is the sum of CPU cycle time and waiting time, as these two contribute to the total turn around time
Why are gui interfaces widely used?
Because while less powerful than a command line, they are more usable by unskilled people because they mimic everyday activities that people are familiar with (eg tossing something into the trash to delete it).
What is time sharing processing?
A method of operation in which multiple users with different programs interact nearly simultaneously.
example: printers
What programs that make up at operating system?
It is not a single program, It is a combination of many smaller programs and interaction between them with a platform to interact.
A)
What security features of the operating system can be used to simplify the design of the database management system?
Type your answer here... Network mappers
The special thread a dispatcher will execute when no ready thread is found.
In a bms system a reset schedule is used to modify what type of control parameter?
In a BMS system, a reset schedule is used to modify water supply temperature.
What is the difference between a proprietary operating system and the android operating system?
Proprietary operating systems are commercial operating systems designed to run on specific computer hardware for which they are licensed.
Other operating systems such as Linux and OpenBSD are free and open source and can be used on any hardware on which someone can make it work.
The Android operating system is a Google implementation of Linux designed to work on smart phones and tablets.
Who developed Mac operating system?
Apple Inc. (starting 2001), but this operating based on UNIX system and technologies developed by NeXT (second half of 1980s).
Understanding concurrency.
Do Networks require a multiuser operating system?
No. Single-user operating systems are quite capable of accessing and sending data over a network.
What information is contained in the state of a process?
PAge table,swap images,outstanding I/O requests
low-level memory management, Inter process communication(IPC), I/O and interrupt management.
Why don't they make Desktop OS run as smooth as mobile OS?
Desktop OSs are more powerful and can do more things compared to iOS or Andriod. As they are more open and have way more going on the might not run as smooth.
If this crash I would reinstall the OS or maybe get a newer computer.
Which resource is used for communication between a hardware device and operating system?
Memory Address
Describe different job scheduling in operating systems?
FIFO (First in first out )
In FIFO the process that comes first is executed first. The next process starts executing only after the previous one has finished.
SJF (Shortest Job First): in SJF the process with shortest length is executed first.
SRTN (Shortest Remaining Time Next): In SRTN, if a process is executing and in the mean time if a process with shorter length comes then the previous process is stopped and the newly entered process is given the chance to execute.
HRRN (Highest Response Ratio Next): In HRRN first calculate RR (Response Ratio)=(L+W)/L, where L=length, W=waiting time of the processes. the one with highest RR is given chance to execute according to their time of arrival.
RR (Round Robin): IN RR a time is fixed during designing and then this time slice is alloted to all the process within which they have to execute.
Processes that run at the same time or pace - along side of each other not before or after.
What is the difference between process scheduling and CPU scheduling?
1. Job scheduler is also called long term scheduler and CPU scheduler is called short term scheduler.
2. Job scheduler selects the processes from the job pool and load them in to the memory for execution. in other hand CPU scheduler selects among the processes that are in ready to execute and allocate the CPU to one of them.
3. CPU scheduler is faster than the process scheduler.
Read more: What_is_the_difference_between_the_job_scheduler_the_CPU_scheduler
what is an operating system? and give two examples
What is user memory for operating system?
A user memory for an operating system are the devices in which data is stored. These devices can be built into the computer, such as the hard drive, or they can be an external device, such as a USB pen drive or external hard drive.
WHY was the operating system developed?
All computers must have some kind of Operating system to function.
