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Q Explain the difference between microkernel and macrokernel Give an example of microkernel?
Micro-Kernel: A micro-kernel is a minimal operating system that performs only the essential functions of an operating system. All other operating system functions are performed by system processes. Monolithic: A monolithic operating system is one where all operating system code is in a single executable image and all operating system code runs in system mode
What are the core activities in the system development process?
gather data, perform preliminary analysis, and determine a preliminary approach
What are the key differences between a monolithic kernel and a microkernel in terms of their architecture and performance?
A monolithic kernel has all operating system services running in the same address space, while a microkernel keeps only essential services in the kernel space and runs other services in user space. This makes microkernels more modular and easier to maintain, but can lead to slightly lower performance due to increased communication overhead between components.
Explain what is meant by structured approach to system development?
A structured approach is just basically a safer and slower way to develop the system. if you think of system development as building a tower the structured approach is the using stronger materials.
When would a system approach its peak power consumption?
enok
What are the main advantages of the microkernel approach?
The main advantages are that new services do not need to modify the kernel and it's easier to port between hardware. Also, microkernels provide more security because of less time in privileged mode.
Why you dont use a microkernel in Linux?
Because the communication between different parts of the system is more complex in a microkernel.
How do user programs and system services interact in a microkernel?
by message passing
What is the main advantage of a layered approach to system design is modularity?
The main advantage of a layered approach to system design is modularity, which allows for the separation of concerns within the system. Each layer can focus on a specific aspect of functionality, making it easier to develop, test, and maintain. This modularity enhances flexibility, as changes or updates in one layer can be made independently without affecting others. Additionally, it promotes code reusability and improves collaboration among development teams.
How do user programs and system services interact in a microkernel architecture?
by message passing
What are the advantages of a microkernel?
The microkernel was designed to address the increasing growth of kernels and the difficulties that came with them. In theory, the microkernel design allows for easier management of code due to its division into user space services. This also allows for increased security and stability resulting from the reduced amount of code running in kernel mode. For example, if a networking service crashed due to buffer overflow, only the networking service's memory would be corrupted, leaving the rest of the system still functional.
What is the main advantage of the micro kernel approach to system design?
Simplicity. The micro-kernel approach to system design keeps the kernel as small and simple as possible. This means that it is easier to maintain, and will likely contain fewer flaws. However, functionality not implemented inside that kernel (like device drivers) will need to be provided in another way, usually by other programs.
What is a monolithic kernel and a microkernel?
The kernel is the heart of an operating system. The kernel internally contains many components, such as a memory manager, scheduler, numerous device drivers, a file system, and so on. When an operating system is being written, there are numerous design philosophies which the designers can adopt. At one extreme is the monolithic kernel, in which all of the components mentioned above, and many others, are all lumped into a single operating system file. At the other extreme is the microkernel, where only the bare minimum is put into the kernel file, and every thing else is put into separate programs, which the microkernel loads and runs at boot time. In practice, the design of most operating systems lies somewhere in between those two extremes, although they generally tend to be closer to a monolithic kernel than a microkernel. But, like everything else in life, the microkernel has its true believers. Other Answer: In monolithic operating system all services are provided in the operating system kernel itself. In my own understanding, monolithic operating system is one big program. Being 'one big program' all the services are associated with one another. This is prone to system crashes, because, if one particular function fails, the entire system will be brought to halt. In regards to resource management, it is difficult for the programmer to debug or implement the system. The only advantages of being monolithic are it deals with resource management rapidly. An example of a monolithic operating system will be the UNIX and MS-DOS. In microkernel operating system, processes are divided and stored in a different server. This key concept of the microkernel operating system is to keep the OS kernel small with basic and minimum process. Other services are stored in a different server. They communicate, via a communication channel
What are the five approaches to management information system design and what are the advantages and disadvantages of each?
Traditional approach, Current practice approach, reaction approach, cafeteria approach, human service approach
What is the main advantage of the layered approach to system design of operating system?
The main advantage of the layered approach is modularity. The layered are selected such that each uses function and services of only lower level layers. This approach simplifies debugging and system verification In this case the system is easier to debug and modify, because changes affect only limited portions of the code, and programmer does not have to know the details of the other layers. Information is also kept only where it is needed and is accessible only in certain ways, so bugs affecting that data are limited to a specific module or layer. Regards Praveen Muttikkal
Q Explain the difference between microkernel and macrokernel Give an example of microkernel?
Micro-Kernel: A micro-kernel is a minimal operating system that performs only the essential functions of an operating system. All other operating system functions are performed by system processes. Monolithic: A monolithic operating system is one where all operating system code is in a single executable image and all operating system code runs in system mode
What is microkernal?
In computer science, a microkernel is the near-minimum amount of software that can provide the mechanisms needed to implement an operating system (OS).
