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Date November 2021 Marks available 4 Reference code 21N.1.SL.TZ0.2
Level SL Paper 1 Time zone no time zone
Command term Identify Question number 2 Adapted from N/A

Question

Airport luggage control

Large airports need to handle thousands of pieces of luggage (including suitcases and other types of baggage) from the moment passengers check them in at the counter until the moment they arrive at their final destination. Sometimes a passenger will change airplanes during their journey, so their bags will need to be transferred by conveyor belt from one plane to another.

When the passenger checks in at the airline counter, a tag is printed and attached to each piece of luggage (see Figure 2). This tag has information about the passenger and their journey printed on it and also shows both a barcode and a ten-digit number that are unique to each piece of luggage.

Figure 2: A luggage tag

[Image by AlexStef at English Wikipedia. Dca-baggage-tag.jpg (https://commons.wikimedia.org/wiki/File:Dca-baggage-tag.jpg). Under copyright and licensed under a Creative Commons Attribution 3.0 International License, https://creativecommons.org/licenses/by-sa/3.0/deed.en]

The luggage then goes on to a number of conveyor belts that take each bag to where it needs to go. Conveyor belts connect to other conveyor belts that direct luggage from the airport building to the correct airplane, from one airplane to the next if the passenger changes airplanes during the journey, or to the baggage reclaim area at the end of the journey. The airport luggage control system will know when to push the bag from one conveyor belt to another to ensure it gets to the correct destination.

The barcode allows the airport’s luggage control system to access a database containing information about each piece of luggage.

Identify two pieces of information about the luggage that may be obtained from this database.

[2]
a.i.

Identify the steps taken by the luggage control system to decide which conveyor belt to choose when a bag reaches a junction between two conveyor belts.

[4]
a.ii.

Analyse the decision by some airports to attach radio frequency identification (RFID) tags to luggage when it is checked in by the passenger, instead of barcode paper printed tags.

[6]
b.

Airlines have databases that contain data about passengers when tickets are booked. This data includes travel dates, itineraries, contact details, passport details and passengers’ home addresses. When passengers purchase a ticket online from an airline company, they have to accept the airline’s terms and conditions by clicking “Agree” (see Figure 3).

Figure 3: Acceptance of airline terms and conditions

Within these terms and conditions, it states that the airline may receive a request to share this data with the government of the country to which the passenger is flying.

Discuss whether airlines should share passengers’ data with the governments of the countries to which they are flying.

[8]
c.

Markscheme

Answers may include:

 

NB: Do not accept simply “journey” – sufficient detail must be given.

Award [1] for identifying each piece of information about the luggage that may be obtained from this database up to [2].

a.i.

Answers may include:

 

NB: Responses must make reference to the IT system(s) involved.

Award [1] for identifying each of the steps taken by the system to decide if a bag is pushed to a different conveyor or not when arriving at a junction up to [4].

a.ii.

Answers may include:

Advantages of barcodes on printed tags:

Disadvantages of barcodes on printed tags:

Advantages of RFID tags:

Disadvantages of RFID tags:

b.

Answers may include:

 

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: business, regulation, policies, privacy, anonymity, security, data, analytics, 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.

c.

Examiners report

[N/A]
a.i.
[N/A]
a.ii.
[N/A]
b.
[N/A]
c.

Syllabus sections

Topic 3: Content » 3.2 Algorithms
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