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What is reentrant kernel?
A reentrant kernel enables processes to give away the CPU while in kernel mode ,not hindering other processes from also entering kernel mode. A typical use is IO wait. The processes wants to read a file..It calls a kernel function for this. Inside the kernel function,the disk controller is asked for the data . Getting the data will take some time & the function is blocked during that time. With an reentrant kernel,the scheduler will assign CPU to another process until an interrupt from disk controller indicates that the data is available and our thread can be resumed . This process can still access IO,like user input
What are kernel level threads?
KERNEL In computing, the kernel is the central component of most computer operating systems; it is a bridge between applications and the actual data processing done at the hardware level. The kernel's responsibilities include managing the system's resources (the communication between hardware and software components).
What is the function of kernal in operating system?
In computing, the kernel is a computer program that manages I/O (input/output) requests fromsoftware, and translates them into data processing instructions for the central processing unit and other electronic components of a computer. The kernel is a fundamental part of a modern computer's operating system.[1]
What is process control block in operating system?
All of the information needed to keep track of a process when switching is kept in a data package called process control block.s A PCB is a data structure in the operating system kernel containing the information needed to manage a particular process. The PCB is the manifestation of a process in an operating system,
What is DDL data dictionary?
DDL and data dictionary are two different things. A data dictionary is a collection of unambiguous explanations about data elements. Normally, it is a centralized repository where everyone who needs information about the data being managed (for example, in a computer system) can refer to so they can understand what each data element is and how it is used. For example, if you have a data element called "ADDRESS," some people might assume that this refers to the street address of a building while other people assume it refers to the IP address of a computer. The data dictionary will explain precisely what the data element called ADDRESS really means. The dictionary might also explain that data elements are made up of other data elements. For example, ADDRESS might be defined as the combination of NUMBER and STREET_NAME. Again, some people might think that NUMBER means the building number on the STREET_NAME, and others might think it means the apartment number, so data dictionaries must be very specific in defining all of the data elements. Data dictionaries may be written documents expressed in a natural language (like English), or they may also be more formalized, using automated tools to help the organization capture, store and manipulate the information about their data elements. A DDL is a Data Definition Language. These are not natural languages. These are languages that can be understood by computer software (normally, a database management system) and they instruct the computer on what data structures it is to create and manage. A data structure usually involves tables, rows within the table, and then data elements within the rows. For example, you might purchase a database management system. When you first install it, the software has no idea what kind of data you want store and manage, so you have to teach it about what kind of structures you want it to create and what kind of data is going to be stored in those structures. You might, for example, tell if that you want each employee in your company to have a record with their social security number, their name, their home address and their telephone number. Then, you might want to have another record for each social security number that lists the employee's salary and what health insurance benefit they have selected. The way you tell your database management software that this is what you want is through the DDL. Once you have programmed it with the DDL, you can then use a DML (data manipulation language) to load the data into the structures, and use it. Again, a DML is a language that is understandable by the computer software. You may write a DML command that tells you the name of very person who lives on Main Street. You could also tell the database software to increase the annual salary of every employee by 15%. The DDL tells the computer what data structures you want, and the DML tells the computer what you want to do with the data contained in those structures. The data dictionary tells everyone what all those data elements really mean.
Describe two kernel data structures in which race conditions are possible?
A race condition can occur where a resource that was being waited upon by two data structures/processes is released and both processes try to access it simultaneously. It can also happen where the processor has to assign a unique process ID to two processes that have created at the same time.
What is DBMS kernel?
A DBMS kernal is a type of database. It is usually used in the architecture business world and it consists of software and system-level data structures.
How can I access and manipulate data stored in the kernel in a C program?
To access and manipulate data stored in the kernel in a C program, you can use system calls provided by the operating system. These system calls allow you to interact with the kernel and perform operations such as reading and writing data to kernel memory. It is important to note that manipulating kernel data directly can be risky and should be done carefully to avoid causing system instability or security vulnerabilities.
How would a person explain data structures to a technophobe?
It is possible to explain data structure in layman's terms. Simply put, in computer terms, a data structure is a commonly used method of data organization.
What is the fundamental difference between logical and physical data structures?
1) Logical data structures are structures that emphasize on data relationships and how data is related from the view of the user. 2) Physical data structures are data models that emphasize on the use of efficiently and effectively storing data in memory.
What is reentrant kernel?
A reentrant kernel enables processes to give away the CPU while in kernel mode ,not hindering other processes from also entering kernel mode. A typical use is IO wait. The processes wants to read a file..It calls a kernel function for this. Inside the kernel function,the disk controller is asked for the data . Getting the data will take some time & the function is blocked during that time. With an reentrant kernel,the scheduler will assign CPU to another process until an interrupt from disk controller indicates that the data is available and our thread can be resumed . This process can still access IO,like user input
The need for complex data structures?
Explain the need for complex data structures
What is the linear data structures?
Linear data structures are 1-dimensional arrays, as in: vectors.
What is the activation key of kernel for windows data recovery?
The activation key of the kernel for windows data recovery is available on the website **Affordablekey.**They have the best selection of activation keys for recovery programs and they are a highly rated and best-selling website. To get the activation key at Affordablekey. you will need to use the promo code XMAS22 to get up to an 80% discount. With this promo code you will get an activation key for the kernel for windows data recovery at an affordable price. This is the best website to get the activation key for kernel for windows data recovery as they have a great selection and offer great discounts.
How do you implement svm algorithm in java?
A kernel is used to implement the SVM algorithm in practise. An input data space is transformed into the appropriate form using a kernel. The kernel trick is a technique used by SVM. The kernel transforms a low-dimensional input space into a higher-dimensional space in this case. To learn more about data science please visit- Learnbay.co
Who invented data structures?
Data structure is a very basic concept. I don't think it's possible to trace it back to a single person who invented it...
What is kernel thread?
KERNEL In computing, the kernel is the central component of most computer operating systems; it is a bridge between applications and the actual data processing done at the hardware level. The kernel's responsibilities include managing the system's resources (the communication between hardware and software components).
