GCE
Computer Science
H446/01: Computer systems
Advanced GCE
Mark Scheme for November 2020Oxford Cambridge and RSA Examinations
OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of
...
GCE
Computer Science
H446/01: Computer systems
Advanced GCE
Mark Scheme for November 2020Oxford Cambridge and RSA Examinations
OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of
qualifications to meet the needs of candidates of all ages and abilities. OCR qualifications
include AS/A Levels, Diplomas, GCSEs, Cambridge Nationals, Cambridge Technicals,
Functional Skills, Key Skills, Entry Level qualifications, NVQs and vocational qualifications in
areas such as IT, business, languages, teaching/training, administration and secretarial skills.
It is also responsible for developing new specifications to meet national requirements and the
needs of students and teachers. OCR is a not-for-profit organisation; any surplus made is
invested back into the establishment to help towards the development of qualifications and
support, which keep pace with the changing needs of today’s society.
This mark scheme is published as an aid to teachers and students, to indicate the requirements
of the examination. It shows the basis on which marks were awarded by examiners. It does not
indicate the details of the discussions which took place at an examiners’ meeting before marking
commenced.
All examiners are instructed that alternative correct answers and unexpected approaches in
candidates’ scripts must be given marks that fairly reflect the relevant knowledge and skills
demonstrated.
Mark schemes should be read in conjunction with the published question papers and the report
on the examination.
© OCR 2020H446-01 Mark Scheme November 2020
Annotation Meaning
Omission mark
Benefit of the doubt
Subordinate clause / consequential error
Incorrect point
Expansion of a point
Follow through
Not answered question
No benefit of doubt given
Point being made
Repeat
Correct point
Too vague
Zero (big)
Blank Page – this annotation must be used on all blank pages within an answer
booklet (structured or unstructured) and on each page of an additional object
where there is no candidate response.
Level 1
Level 2
Level 3H446-01 Mark Scheme November 2020
Subject Specific Marking Instructions
Question Answer Mark Guidance
1 (a) i • Client computers connect to server
• Server provides access to a resource/service
• In this case hotel staff use client computers to
connect to database on server (or other sensible
example).
3
AO1.2
ii e.g.
• only one point of failure
• easier to manage users/access
• Easier to backup
• Easier to keep data secure.
• Technicians can more easily remotely install /
monitor.
2
AO1.1
(b) • Joins computers/devices together on a LAN
• Receives packets/data
• Recipient’s address is given in packet header/it
uses the mac address
• Send packets/data
• Out the correct port /to the specific computer
device
3
AO1.1
(c) Mark Band 3–High Level (7-9 marks)
The candidate demonstrates a thorough knowledge
and understanding of network security. The material
is generally accurate and detailed.
The candidate is able to apply their knowledge and
understanding directly and consistently to the
9
AO1.1
(2)
AO1.2
(2)
AO2.1
(2)
AO3.3
(3)
AO1
Malware and viruses are software that can have a negative impact
on computer systems
Spyware and keyloggers can record information entered and send
back to a third party
Phishing attacks attempt to steal data by fraudulently appearing as
legitimate emails asking for secure information
[Show More]
.png)
.png)
.png)
.png)
.png)
