2024_OCR - GCSE (9–1) Computer
Science J277/01
Computer Systems
Merged Question Paper & Marking
Scheme
(Wednesday 15 May 2024 –
Afternoon)
, Oxford Cambridge and RSA
Wednesday 15 May 2024 – Afternoon
GCSE (9–1) Computer Science
J277/01 Computer Systems
Time allowed: 1 hour 30 minutes
Do not use:
* 1 4 2 6 5 6 2 7 6 3 *
• a calculator
* J 2 7 7 0 1 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use the
lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
INFORMATION
• The total mark for this paper is 80.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 16 pages.
ADVICE
• Read each question carefully before you start your answer.
,GCSE (9-1) Computer Science - J277/01 Computer Systems
Exam Summary:
This GCSE Computer Science exam, specifically paper J277/01, assesses students' understanding of
fundamental computer systems concepts.
Key Areas of Assessment:
1. Systems Architecture:
o Components of a computer system (CPU, memory, storage, input/output devices)
o Von Neumann architecture
o Fetch-execute cycle
o Role of the operating system
2. Memory and Storage:
o Types of memory (RAM, ROM, cache)
o Characteristics of different storage devices (HDD, SSD, cloud storage)
o Data representation (binary, ASCII, images, sound)
3. Computer Networks:
o Network topologies (star, bus, mesh)
o Network protocols (TCP/IP, HTTP)
o Wired and wireless networks
o Network security threats and countermeasures
4. Systems Software:
o Operating system functions (file management, resource allocation, multitasking)
o Utility software (antivirus, disk defragmentation, compression)
o Drivers and their role
5. Ethical, Legal, Cultural, and Environmental Impacts:
o Data protection and privacy issues
o Copyright and intellectual property
o Environmental impact of technology
o Digital divide and accessibility
Overall, this exam requires students to:
Demonstrate a solid understanding of the components and functions of a computer system.
Explain how data is represented and processed within a computer.
Understand the principles of computer networks and their role in communication.
Evaluate the ethical, legal, cultural, and environmental impacts of digital technology.
Note: This summary provides a general overview of the exam. The specific requirements and content
may vary slightly from year to year.
, 2
1
(a) The following table has either the binary or denary value of 3 numbers.
Complete the table by converting the 8-bit binary number into denary and the denary number
into 8-bit binary.
8-bit Binary Denary
11110000
105
00011110
[3]
(b) Complete the table by writing the answer to each statement.
Statement Answer
The smallest denary number that can be
represented by a 4-bit binary number
The largest denary number that can be
represented by a 6-bit binary number
The maximum number of different colours
that can be represented with a colour depth of
7-bits
The minimum number of bits needed to
represent 150 different characters in a
character set
[4]
(c) Show the result of a left binary shift of 4 places on the binary number 00001111.
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Cate001. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.68. You're not tied to anything after your purchase.
