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if it has enough energy it would i think
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∙ 12y ago
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How can you check the version of kernel you are currently running and upgrade the kernel?
These are separate and unrelated tasks. To check the version of the running kernel in Linux, use the command uname -r. To upgrade the kernel, either use your distro's package manager (if any) to update the system, or download and compile the Linux kernel source.
What components of an operating system are always in memory?
dram
Difference between kernel mode and user mode?
Kernel ModeIn Kernel mode, the executing code has complete and unrestricted access to the underlying hardware. It can execute any CPU instruction and reference any memory address. Kernel mode is generally reserved for the lowest-level, most trusted functions of the operating system. Crashes in kernel mode are catastrophic; they will halt the entire PC.User ModeIn User mode, the executing code has no ability to directly access hardware or reference memory. Code running in user mode must delegate to system APIs to access hardware or memory. Due to the protection afforded by this sort of isolation, crashes in user mode are always recoverable. Most of the code running on your computer will execute in user mode.
What is the distinction between kernel mode and user mode in relation as a security system?
Code running in kernel mode has unlimited access to hardware and CPU. Code in user mode can't address memory that kernel mode does not allow it to.
What are different types of kernel?
Basically, there are three types of kernel: - Monolithic Kernel- Micro Kernel- ExoKernel Monolithic:As the name itself suggests, the kernel has every services like, FS Management, MM, Process Management, etc. in the kernel space. It does not run as a separate process. So, as you guess, there is no context switching, when you ask for a service. But, the probability of a monolithic kernel getting struck is more. Because, if there is a bug in the kernel itself, nothing can rescue it. Linux and Windows are good examples of Monolithic kernel. Linux, being a monolithic kernel, you can insert modules into the kernel dynamically using insmod command. Micro Kernel:Micro kernel runs all the services as a daemon in the user space. So, if a problem occurs in any of the service, the kernel will be able to decide what to do next. But, you pay-off the time to switch to a service in this type of kernel. Micro kernels are some what difficult to design and build than the monolithic kernel. There are always a discussion over the internet, talking about the advantage and disadvantages of monolithic and micro kernel. Exo Kernel:Exo kernel is not yet stabilized. It's under design and research. The user mode processes running in this type of kernel has the ability to access kernel resources like process tables, etc directly.
what is operating system signal?
Signal is a way of communication between process and OS kernel. If process (running program) undergoes any serious issue, then kernel generates signal .
What is the meaning of kernel and how can you find out how many kernel exist in a computer?
wikipedia.org/wiki/Kernel_%28computing%29 A computer kernel is basically the "big brother" application and manages all other applications currently running on your computer, and controlling their access to cpu, ram, hard drive, and any devices currently connected (through device drivers of course). There's never more than 1 kernel running on your computer at a time, however if you have multiple operating systems installed on your computer they each have their own kernel (windows vista, windows 7, windows xp, linux, mac, etc...). If you install and run a virtual machine then another kernel will run in that and you could technically have multiple kernels running on your computer.
Can an ear of corn have an odd number of kernel rows?
No. It will always be an even number.
The operating system is the one program running at all times on the computer which is called?
Operating System's kernel
What are benefits of adopting kernel modules in the modern Linux kernel?
Efficiency. Thanks to modules, the kernel doesn't have to have every last driver loaded and running, nor does the user have to recompile the kernel every time they need to load or unload or update a driver. Before the Linux kernel adopted modules, one had to recompile and reconfigure the kernel any time they wanted to change drivers. Today it's as simple as unloading and reloading modules. Some people, however, like to disable modules and build everything into their kernel when they create a custom Linux kernel. This is done largely because when someone makes a custom kernel there is no question what drivers and pieces of the kernel will be needed, and modules would be unneeded.
When was Always Running created?
Always Running was created in 1993.
What will happen if kernel tries to wakeup the processes but there are no such process?
The kernel always knows what processes exist and in what state they are, so it won't try to wake up processes that don't exist.
