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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
Give an example of modular monolithic kernel?
Modular monolithic kernel example is Linux.
don't need to confuse on monolithic and modular kernel. if we need to divide a single module of kernel in separate module to make handle easy we can do at the configure time of kernel but these kernel module having only in kernel space.
Monolithic Kernel
- single binary file
- all drivers include in kernel itself.
Modular kernel
- Multiple files for kernel
- Drivers can be loaded or unloaded into kernel using modprob command, see man page of lsmod, modprob etc when
- Almost all drivers are build and linked against kernel
actual mean of modular kernel in linux :
some part of the system core will be located in independent files called modules that can be added to the system at run time. Depending on the content of those modules as
1. only loading drivers if a device is actually found
2. only load a filesystem if it gets actually requested
3. only load the code for a specific (scheduling/security/whatever) policy when it should be evaluated
Those modules are still running in the kernel space and not in user space, so the kernel architecture is still monolithic.
What will replace laptop computers in the near future?
In the near future laptop computers will take the form of eye vision glasses which may be first introduced with react to light screen which will change tint on the inside as the Internet/TV is switched on to allow only the user to view on screen display.
The drive unit of the hi-tech glasses will be powered by user movement attached to waist belt etc, using wireless blue tooth worn in user ear as part of glasses for sound & wireless operation.
The Internet vision glasses keyboard will react to user finger movement with on screen display keyboard which only the user can see, the vision glasses will have scope of ongoing improvement to be used as electronic eye vision glasses to tailor eye sight without having to visit opticians etc.
This is how I see the replacement of laptops in the near future that perform as full screen Internet, TV & electronic eye vision glasses using finger movements to operate.
What is device driver software?
Device drivers software are computer specialized programs designed to allow input/output devices to communicate with the rest of the computer and its software. Device driver software is included with most hardware components. (ie., with printers, etc.)
Why is two-level scheduling commonly used?
It is a Computer Science term.
Two-level scheduling is needed when memory is too small to hold all the ready
processes. Some set of them is put into memory, and a choice is made from that set.
From time to time the set of in-core processes is adjusted. This algorithm is easy to
implement and reasonably efficient, certainly a lot better than, say, round robin without
regard to whether the process was in memory or not.
What system serves as an interface between the other spheres?
The biosphere serves as an interface between the spheres, enabling water to move between the lithosphere, hydrosphere, and atmosphere.
security,memory management and file management
Combination of hardware and software that you use to communicate with and control the computer?
The hardware and software that people use to communicate with the computer include the mouse, visual display and the keyboard. Drivers are the software that the computer needs for the hardware to work.
What is the difference between software publishing and assigning?
ANS An administrator can either assign or publish software applications.
Assign Users
The software application is advertised when the user logs on. It is installed when the user clicks on the software application icon via the start menu, or accesses a file that has been associated with the software application.
Assign Computers
The software application is advertised and installed when it is safe to do so, such as when the computer is next restarted.
Publish to users
The software application does not appear on the start menu or desktop. This means the user may not know that the software is available. The software application is made available via the Add/Remove Programs option in control panel, or by clicking on a file that has been associated with the application. Published applications do not reinstall themselves in the event of accidental deletion, and it is not possible to publish to computers.
What are the types of operating system?
1.word processor:is a program used to prepare text based documents
2.desktop publishing software:is a program used to manage the layout of text and pictures
3.spread sheet software:is a software used to do calculations and plot graphs
4.web site writer:it is used to create and manage website
How do you set up a yahoo email account?
Enter Yahoo's address in your search engine then go to mail.
Difference between internal fragmentation and external fragmentation in operating system?
Fragmentation occurs in a dynamic memory allocation system when many of the free blocks are too small to satisfy any request.
External Fragmentation: External Fragmentation happens when a dynamic memory allocation algorithm allocates some memory and a small piece is left over that cannot be effectively used. If too much external fragmentation occurs, the amount of usable memory is drastically reduced. Total memory space exists to satisfy a request, but it is not contiguous.
Internal Fragmentation: Internal fragmentation is the space wasted inside of allocated memory blocks because of restriction on the allowed sizes of allocated blocks. Allocated memory may be slightly larger than requested memory; this size difference is memory internal to a partition, but not being used
Why would a computer need device drivers?
Computers work way faster than our minds but they are bigger fools than us. They need to be taught just like a new born baby to carry out their tasks. Now the job of device drivers comes to play. They contain the essential data that is needed by the computer to control or operate that device that has been attached to it.
That is why, there is a specific device driver for a specific device because all the devices work differently.
How is the IKEA's operations design different from other furniture retailers operations?
IKEA sets up their stores with most of their merchandise assembled. They target a wide range of people with their quality merchandise at affordable prices. With their prices being so low they get a huge number of people each day. Other furniture retailers have a limited stock and higher prices due to a lower consumer traffic each day.
What are the computer operating systems used in hotels?
The OS is usually an altered regular OS. Just like in schools, you get an OS without all of the capabilities and administrative powers of a normal PC OS. Hotels OS's usually only let you browse the internet. Hope that helped!
What is used to operate tablet PC?
If you mean OS (operating Systems) the there are many different ones.
IOS (apple Ipad)
Android (Many different ones)
Blackberry OS (Playbook)
WebOS (HP Touchpad)
Linux
Windows
They are all quite different, but are good in their own ways. Android covers most of the tablets, but IOS is probably most reconised.
What are the disadvantages of operating systems?
what are the disadvantages of operating systems effects of information technology
What where the key motivations for the development of multiproccessing and multiprogramming?
whar are key motivation for the development of multiprogrammig,multitasking,multithreading
A root partition on computer terminology is the prtition where the operating system files are located. Often this is the C: partition (some operating systems allow other designations for the root but some - such as Microsoft Windows - do not).
