Virtual memory - Memory and storage - OCR - GCSE Computer Science Revision - OCR (2024)

FAQs

How do you get a 9 in GCSE computer science OCR? ›

Virtual memory enables data that is in RAM and not currently being used to be transferred to the hard disk. This frees up room in RAM for other programs and data. When the data on the hard disk is needed again, any other unused data is transferred to the hard disk before the original data is transferred back to RAM.

How many exams are there? There are two exam papers at the end of the syllabus, one focusing on computer systems and one with a focus on computational thinking, algorithms and programming. Each paper lasts 1.5 hours and is worth 50% of the total GCSE.

Operating system will set up virtual memory using the virtual memory manager (VMM). VMM creates a file on the hard disk large enough for the extra memory needed. OS can then address memory as if it were real memory stored in RAM. Maps memory addresses used by a program into physical addresses in computer memory.

Is OCR or AQA harder? No exam board should be easier or harder than another. While they have different paper structures and question styles, Ofqual ensures each exam board is the same in terms of difficulty. So getting a grade 9 in AQA Maths should be the same challenge as a grade 9 with OCR.

Grade 9 is generally awarded to those in the top 5% or 1 in 20 candidates. Know what you're aiming for and review back to your existing marks and what percentage score you need in the exam to score a 9.

Virtual memory is a method that computers use to manage storage space to keep systems running quickly and efficiently. Using the technique, operating systems can transfer data between different types of storage, such as random access memory (RAM), also known as main memory, and hard drive or solid-state disk storage.

Virtual memory is a memory management technique where secondary memory can be used as if it were a part of the main memory. Virtual memory is a common technique used in a computer's operating system (OS).

To make big topics easier to digest, break them up. Students should avoid procrastination and distractions during revisions. Reading, summarising, and creating visual representations of key points help students understand a topic better. Quizzes and practice exams prove exam technique and knowledge.

Is GCSE computer science hard? ›

Computer Science GCSE Content

The course requires logical reasoning, analytical skills, and a systematic approach to problem-solving. Some students may find this more challenging if they're more accustomed to subjects that require rote memorisation or purely descriptive answers.

The questions in GCSE Computer Science only require a very basic ability in Maths. You can't use a calculator because the sums are easy enough to do in your head, or write down on your paper.

Virtual memory is an extension of primary storage (RAM) located on secondary storage. In situations where RAM is close to being full, virtual memory can be used so that the computer remains operational. Programs and data not currently being executed are transferred to virtual memory.

read only memory (ROM) This is non-volatile memory or storage containing data that cannot be changed. random access memory (RAM) This is volatile memory that is constantly being written to and read from.

In computing, virtual memory, or virtual storage, is a memory management technique that provides an "idealized abstraction of the storage resources that are actually available on a given machine" which "creates the illusion to users of a very large (main) memory".

Grade 9 is considered to be higher than an A* and roughly the top 20% of GCSE students who achieve a grade 7 or above will achieve a grade 9.