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Date November 2018 Marks available 4 Reference code 18N.2.SL.TZ0.9
Level SL Paper 2 Time zone no time zone
Command term Explain Question number 9 Adapted from N/A

Question

A charitable organisation, Harvest, which operates in a less economically developed country (LEDC), uses old computers that have been donated to them. The organization relies on WiFi and satellite-based transmission for access to the Internet.

Harvest is considering using a cloud-based service provided by a large IT company based in one of the more economically developed countries (MEDC).

Outline one technical challenge that Harvest may encounter in setting up its own website with the technologies that it has available.

[2]
a.

Explain how the use of cloud-based services may help Harvest to overcome the limitations of the available technologies.

[4]
b.

Describe two problems this may cause for an organizsation such as Harvest.

[4]
c.

Harvest wishes to improve its ranking in the major search engines.

Discuss whether Harvest should use black hat search engine optimization techniques in order to improve its ranking.

[5]
d.

Markscheme

Award up to [2 max].
Award [1] for describing the challenge resulting from some limitation and [1] expansion, possibly with example up to [2 max].
Old computers impose memory and processing constraints;
It is likely that they cannot make sophisticated web pages;
For example, they may need to reduce the number of interactions/transmissions;
By deciding not to have dynamic web pages;
To the purpose of not generating loss of processing power on their side;

The software might not be up-to-date/the OS is old;
This poses a threat for viruses or deliberate attacks (attack the weakest nodes);
To the point that not even the charities will link to their website, rather just listing the name of the association;
To limit the risk of propagating malware;

a.

Award up to [4 max].
Award [1] for each reason how the use of cloud-based services may help Harvest to overcome the limitations of the available technologies up to [4 max].
They can host the website on the cloud;
Enabling a sophisticated site to be created / bypassing their own limitations;
The cloud could store all of their data;
As they will have limited storage on their own equipment;

b.

Award up to [4 max].
Award [1] for identifying how the use of cloud-based services may cause problems and [1] for an expansion / development up to [2 max].
Mark as [2] and [2].
The costs are likely to be high;
And Harvest is clearly a company with limited funds;

The cloud company will be bound by rules and regulations in the country in which it is registered;
These may cause conflicts with regard to the type of information that Harvest deals with;

c.

Award up to [5 max].
Award [1] for identifying an advantage of using black hat techniques and an additional [1] for each development of that advantage up to [2 max].
Award [1] for identifying a disadvantage of using black hat techniques and an additional [1] for each development of that disadvantage up to [2 max].

Award [1] for a valid conclusion.

Advantages:
The use of black hat techniques + an example (e.g. hidden links, or reciprocal links, keyword stuffing, hidden content, content theft, etc.);
May temporarily improve its ranking;

Disadvantages:
However, this is unethical;
This may not sit well with its image as a charity;

Conclusion:
Search engines will eventually discover that these techniques are being used;
This may lead to the site being banned;

d.

Examiners report

[N/A]
a.
[N/A]
b.
[N/A]
c.
[N/A]
d.

Syllabus sections

Option C: Web science » C.4 The evolving web
Option C: Web science

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