Date | November 2021 | Marks available | 8 | Reference code | 21N.1.SL.TZ0.1 |
Level | SL | Paper | 1 | Time zone | no time zone |
Command term | To what extent | Question number | 1 | Adapted from | N/A |
Question
Accessing online media
Rajesh frequently travels for his job and has found that he is unable to watch his favourite films and television (TV) channels when abroad (see Figure 1). He has been informed that he can subscribe to an internet protocol television (IPTV) service or use a virtual private network (VPN) to stream or download this content.
Figure 1: An example of blocked content
Identify two hardware devices that Rajesh could use to view his internet protocol television (IPTV) channels.
Identify two features of a virtual private network (VPN).
Identify two features of a protocol.
Explain why Rajesh downloaded films rather than streaming them when he was travelling.
Rajesh has been told that subscribing to an internet protocol television (IPTV) service may compromise his anonymity.
Distinguish between anonymity and privacy.
To what extent is it acceptable for Rajesh to use services like a virtual private network (VPN) to access content that may be blocked in the country he is visiting?
Markscheme
Answers may include:
- Smart TV
- Mobile phone/cellphone
- Tablets
- PC/laptop
- IPTV box (such as an Amazon Fire stick, Apple TV, etc.)
Award [1] for each hardware device identified that Rajesh could use to view his IPTV channels up to [2].
Do not accept monitor or television.
Answers may include:
- A private [IP] address on a public network
- Masks the user’s IP address
- Provides an encrypted connection
Award [1] for each feature of a VPN identified up to [2].
Answers may include:
- A set of rules that govern the communication of information.
- The rules govern what information is communicated / the format of the information.
- The rules govern how/when the information is communicated / transmitted (between devices on the same network).
Award [1] for each feature of a protocol identified up to [2].
Answers may include:
- Films can be played offline / no internet connection is needed to play downloaded films / device connects to the source file and downloads to the hard drive.
- The downloaded files can be transferred to other devices.
- The film quality is intact.
- The downloaded files can be viewed in countries with restricted internet access.
- Streaming depends on the internet bandwidth, which may fluctuate.
- There may be film pauses due to buffering, especially with slow internet connections when streaming.
Answers may include:
- Anonymity is knowing what activities are being carried out but not knowing who is carrying them out.
- Privacy is knowing who the person carrying out the activities may be but not knowing what these activities are.
Award [1] for each appropriate statement that distinguishes anonymity from privacy up to [2].
Answers may include:
Reasons why Rajesh should use services like a VPN:
- The service is legitimate and cannot be accessed by any other means.
- Rajesh may believe that the blocking of the service is unlawful / inappropriate / the degree of censorship/surveillance is draconian.
- There may be technical advantages of using a service like a VPN (systems).
- Through a VPN, Rajesh can browse the web in complete anonymity (systems).
- Rajesh may find media access through a VPN more economical compared with subscribing to the same services in a different country (regulations, ISP).
Reasons why Rajesh should not use services like a VPN:
- Rajesh should abide by the laws of the country and by circumventing the laws may place himself at risk.
- The content may be deemed to be inappropriate in the host country and has been blocked for religious / security / political reasons (values).
- The use of a VPN may reduce the speed of downloading or streaming (systems).
- Rajesh may not be able to download or stream films despite having a subscription to a VPN because a few broadcasting apps use anti-VPN technology to restrict content outside a specific region.
In part (c) of this question it is expected there will be a balance between the terminology related to digital systems and the terminology related to social and ethical impacts.
Keywords: employment, VPN, censorship, surveillance, anonymity, privacy, laws, regulations, change, power, systems, values, ethics
Refer to SL/HL paper 1, part c markbands when awarding marks. These can be found under the "Your tests" tab > supplemental materials > Digital society markbands and guidance document.