Cambridge A Level Applied Information and Communication Technology 9713 — 2016 Feb/March Paper 3 · Variant 2

This document consists of 14 printed pages and 2 blank pages. DC (NH) 113352/2 © UCLES 2016 [Turn over * 1 3 0 2 5 8 7 7 0 3 * APPLIED INFORMATION AND COMMUNICATION TECHNOLOGY 9713/32 Paper 3 February/March 2016 1 hour 15 minutes Candidates answer on the Question Paper. No additional materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. Do not use staples, paper clips, glue or correction fluid. You may use an HB pencil for any diagrams, graphs or rough working. DO NOT WRITE IN ANY BARCODES. Answer all questions. The number of marks is given in brackets [ ] at the end of each question or part question. The businesses described in this paper are entirely fictitious. Cambridge International Examinations Cambridge International Advanced Level

2 9713/32/F/M/16 © UCLES 2016 Scenario 1 Questions 1 and 2 NatKorp is a multinational company with offices in cities around the world. The staff in the offices are in regular contact with each other by email and telephone in order to share and discuss company business. The staff can use the company network for remote storage of files, for access to the World Wide Web and for use with telephone handsets that use VoIP. Each member of staff is provided with a company email address. The address is based on the name of the member of staff and the name of the company.

3 9713/32/F/M/16 © UCLES 2016 [Turn over 1 (a) Discuss the benefits and drawbacks of using VoIP for voice calls. … … … … … … … … … … … … … …[6] (b) Explain how VoIP software enables company staff to talk to each other. … … … … … … … … … … … … … …[6]

4 9713/32/F/M/16 © UCLES 2016 2 Sanjit, a sales manager, uses the company email and has this email address: sanjit.sales@company.com

A B (a) Describe the purpose of the parts of an email address. You may use the labels A and B to help you. … … … … … … … … … …[4]

5 9713/32/F/M/16 © UCLES 2016 [Turn over (b) Describe, in detail, how an email is sent by Sanjit and delivered to a sales representative in another office. … … … … … … … … … … … … … …[6]

6 9713/32/F/M/16 © UCLES 2016 Scenario 2 Questions 3, 4 and 5 The authorities at an international airport have introduced a range of measures to try and improve the process of identifying passengers and improve the security of the airport and aircraft. The airport now requires all passengers to use electronic tickets (e-tickets) and to use an electronic passport (e-passport) containing an embedded chip which holds the personal details of the passenger. Some airlines send boarding passes to the passenger’s mobile phone. They often refer to this as a mobile boarding pass.

7 9713/32/F/M/16 © UCLES 2016 [Turn over 3 (a) Explain the benefits to the passenger of using e-tickets. … … … … … … … … … …[4] (b) Describe how the airport computer system is used to match an e-ticket to a specific passenger at check-in. … … … … … … … … … …[4]

8 9713/32/F/M/16 © UCLES 2016 (c) State one way that a boarding pass may be sent to the mobile device of a passenger. … … …[1] (d) (i) Describe the benefits of using mobile boarding passes. … … … … … …[2] (ii) Describe one drawback of using mobile boarding passes. … … …[1] 4 E-tickets have to be purchased online. Explain why passengers may be worried about purchasing e-tickets online. … … … … … … … … … …[4]

9 9713/32/F/M/16 © UCLES 2016 [Turn over 5 Discuss the benefits and drawbacks of the airport requiring all passengers to use an electronic passport. … … … … … … … … … … … … … … … … … … … …[8]

10 9713/32/F/M/16 © UCLES 2016 Scenario 3 Questions 6, 7 and 8 A supermarket buys the goods that it sells, from a wholesaler who keeps goods in a warehouse ready for delivery to the supermarket when they are needed. The supermarket uses point of sale (POS) terminals at its checkouts. Operators of the POS terminals use a variety of hardware devices to enter data about the goods being sold. The supermarket has a stock control database containing details of all the goods that it sells. The stock control database is linked to the computer system at the wholesaler’s warehouse. The supermarket uses a ‘just-in-time’ (JIT) strategy to ensure that it always has enough goods to sell to its customers.

11 9713/32/F/M/16 © UCLES 2016 [Turn over 6 (a) Give the advantages and disadvantages of a checkout operator using each of the following items of hardware at a POS terminal. (i) barcode reader … … … … … … …[3] (ii) electronic scales … … … … … … …[3] (iii) numeric keypad … … … … … … …[3] (iv) touch screen … … … … … … …[3]

12 9713/32/F/M/16 © UCLES 2016 (b) Describe, in detail, the computer processing that occurs to ensure that goods are re-ordered to replace those sold. … … … … … … … … … … … … … …[6]

13 9713/32/F/M/16 © UCLES 2016 [Turn over 7 Discuss the advantages and disadvantages of using a JIT strategy. … … … … … … … … … … … … … … … … … … … …[8]

14 9713/32/F/M/16 © UCLES 2016 8 The supermarket is considering replacing its ‘off-the-shelf’ database software with purpose-written (bespoke) stock control software. Explain the benefits and drawbacks of using purpose-written (bespoke) software. … … … … … … … … … … … … … … … … … … … …[8]

15 9713/32/F/M/16 © UCLES 2016 BLANK PAGE

16 9713/32/F/M/16 © UCLES 2016 Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at www.cie.org.uk after the live examination series. Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. BLANK PAGE

® IGCSE is the registered trademark of Cambridge International Examinations. CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge International Advanced Subsidiary and Advanced Level MARK SCHEME for the March 2016 series 9713 APPLIED INFORMATION AND COMMUNICATION TECHNOLOGY 9713/32 Paper 3 (Written Test B), maximum raw mark 80 This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Examiners were instructed to award marks. It does not indicate the details of the discussions that took place at an Examiners’ meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge will not enter into discussions about these mark schemes. Cambridge is publishing the mark schemes for the March 2016 series for most Cambridge IGCSE® and Cambridge International A and AS Level components.

Page 2 Mark Scheme Syllabus Paper Cambridge International AS/A Level – March 2016 9713 32 © Cambridge International Examinations 2016 1 (a) Six from: Benefits: No direct calling costs when using VoIP handsets over company network Can be used from smartphone/PC and tablets Can support additional services e.g. Caller ID, anonymous call blocking, call diversion, call waiting, do not disturb, ring back, voicemail Can support encryption of conversations Can support telephone conferences/more than two participants Easily expandable compared to traditional telephone networks Staff can have location independent telephone numbers which are assigned so staff login to services Drawbacks: Can use too much network resource/bandwidth Data packets can be lost Data packets can arrive in the wrong order/need to be re-sequenced Quality of service can vary/put demands on the network to the detriment of other uses Latency can be a problem – delay in sound/voices …caused by e.g. packets taking different routes Latency deliberately increased to counter jitter – packets buffered to re-sequence so jitter is introduced Calls can be intercepted more easily than traditional calls so increased need for encryption Support for emergency calls depends on power to the VoIP system being on Max 4 for all advantages or all disadvantages. 1 mark is available for a reasoned conclusion [6] (b) Six from: Signal sent from one handset to system to locate/connect to appropriate receiving handset/initiate connection Telephone handset/headset uses microphone to capture voice/sounds Analogue sounds/voices are digitised …using codec Digital information divided into packets Packets placed into IP packets …using UDP as no re-transmission of packets is usually possible due to latency Packets transmitted over network …packet switching Packets travel independently Receiver re-sequences packets Digital data converted back to analogue …using codec Use of session control/signal protocols …to set up/end calls [6]

Page 3 Mark Scheme Syllabus Paper Cambridge International AS/A Level – March 2016 9713 32 © Cambridge International Examinations 2016 2 (a) Four from: A: local address …used to identify holder of email inbox/used as username of the holder of email inbox B: domain part of address …identifies administrative body e.g. the company that owns the address …used in routing the email to correct address …looked up against DNS records …last part can be used to identify the type of company e.g. .com represents a commercial organisation/is a top level domain @: used to separate local from domain address Account name cannot be longer than 64 characters and domain name cannot be, practically, longer than 254 characters. [4] (b) Six from: Email written in email client/software/webmail… …add any required attachments Subject added to subject bar Address added to email… …cc/bcc other recipients Sets read receipt if required Email sent to outbox Use of SMTP/POP3/IMAP protocol(s) Outbox sends email to email server on network Email server stores email ready for forwarding Email server uses domain part of email to look up domain of recipient Email server send sends email to appropriate domain via routers …each router uses IP address of domain to direct packets/email Email arrives at server of domain and may be stored …recipient server looks up local address …sends email to inbox of recipient/local address [6] 3 (a) Four from: No waiting for delivery E-ticket cannot be lost/misplaced/damaged …E-ticket can be reprinted Less prone to fraud/ e-ticket cannot easily be used by others Can be used by displaying on smart-phone …no need to print anything at all Can carry a barcode/matrix/QR code is all that is needed/contains link to all booking details Passenger details stored in system so can be retrieved for future use Physical copy of e-ticket may not actually be required/no need to have physical copy at check-in …passenger may just need reference code and personal/photo id Allows check-in online …enables selection of seats Allows boarding passes to be printed before arrival at check-in/airport …reduces delays at airport check-in desks [4]

Page 4 Mark Scheme Syllabus Paper Cambridge International AS/A Level – March 2016 9713 32 © Cambridge International Examinations 2016 (b) Four from: Unique barcode/matrix code on ticket/in email body/attachment …used to look up passenger details… …passenger details already stored on system when booking was made …credit card/passport number/email address Details checked with passenger identification documents …passenger shows credit card used to purchase tickets/passport [4] (c) One from: Sent by email on check-in Sent by text message on check-in Use of airline app/the boarding pass appears within airline app on check-in [1] (d) (i) Two from: No need to stop at a kiosk at the airport to print boarding pass No need to use paper/environmentally friendly due to reduced paper use May be more secure due to use of matrix codes/no paper copy Passengers may not have access to a printer [2] (ii) One from: Mobile app may not cope with more than one per person per reservation Mobile device may not work/battery may fail on device E-boarding pass may not be readable from the screen of the device [1] 4 Four from: More possibility of fraud …personal details can be intercepted during transfer between passenger and booking site …personal details can be used for identity theft …financial details can be intercepted during transfer between passenger and booking site …financial details can be used to purchase goods by third parties …financial details can be used to transfer/steal funds from bank accounts of passengers Correction of errors on application form for e-ticket may be expensive to correct [4]

Page 5 Mark Scheme Syllabus Paper Cambridge International AS/A Level – March 2016 9713 32 © Cambridge International Examinations 2016 5 Eight from: Benefits: Very secure so passport copying/tampering is more difficult …chip holds hash (#) code of all files so copying/tampering is difficult Faster clearance at immigration checks …chip is read/checked quicker by a computer than by a human Automated border clearance at border posts …fewer border staff required at checkpoints …greater border protection Drawbacks: Data transfer by RFID is insecure …can be read by any appropriate reader in vicinity Electronic passports are more expensive for passenger to buy Extra cost of readers at airports/check-ins Use of biometric data is seen as an invasion of privacy Max 6 for all benefits or all drawbacks One mark is available for a reasoned conclusion. [8] 6 (a) (i) Three from e.g. : Advantages: All items/goods have a barcode …reader is required to scan barcodes on items which is quicker than manual entry …as item is purchased …to look up item details for customer which is quicker than manual lookup No need to manually type in item details …so there are fewer data entry errors at checkout/by operator Disadvantages: Barcode may be unreadable due to damage/missing Item may not be in stock database/may be incorrectly entered in stock database Max 2 for all advantages or all disadvantages [3]

Page 6 Mark Scheme Syllabus Paper Cambridge International AS/A Level – March 2016 9713 32 © Cambridge International Examinations 2016 (ii) Three from e.g. : Advantages: (Loose) goods sold by weight …electronic scales required to input weight of goods which is quicker than manual weighing …to determine total cost of purchase …(loose) goods have no bar code so scales weigh these quickly Customers can weigh and price goods themselves Disadvantages: Misidentification of the actual item being weighed can lead to inaccurate pricings Poor calibration of the scales can lead to inaccurate weights/pricings being recorded Max 2 for all advantages or all disadvantages [3] (iii) Three from e.g. : Advantages: Required to enter barcode number …if missing/corrupt/unreadable Enter number of goods sold …if multiples of same items purchased Disadvantages: Number arrangement favours right-handed individuals Possible repetition of input of numbers as keys close together Possible miss-key of data Two standard layouts exist leading to possible confusion Risk of health issues due to continual tapping of keypad Max 2 for all advantages or all disadvantages [3] (iv) Three from e.g. : Advantages: Shows details/pictures of items …when choosing goods with no bar code …no need to remember all the details/products Can enter details of items …by touching icons/images of goods …so data entry is faster Can show many layers of screens …to show more details/more products Can be considered to be more hygienic as can be cleaned/wiped easier than other hardware Can reduce space on counter/checkout/need for separate keyboard/pad

Page 7 Mark Scheme Syllabus Paper Cambridge International AS/A Level – March 2016 9713 32 © Cambridge International Examinations 2016 Disadvantages Screens can get dirty so become unresponsive/will not work Screens have to be within reach/may not be at optimum distance for viewing If touchscreen crashes/becomes unresponsive then whole system is unusable Max 2 for all advantages or all disadvantages [3] (b) Six from: Barcode is read at terminal Barcode used to look up details of product in stock database …product id field used Number of items sold is sent to database …number of goods sold deducted from value in field containing number in stock Value in ‘number in stock’ field compared with value in ‘re-order’ field …if value in ‘number in stock’ field is more than value in ‘re-order’ field …then no action is taken …if value in ‘number in stock’ field is equal to/less than value in ‘re-order’ field …then a new order is automatically generated/printed …record is flagged to indicate that a re-order has been generated …order for replacement goods sent to warehouse computer system [6] 7 Eight from: Advantages: No need to stock large quantities of goods that do not sell quickly Reduced costs of storage facilities on site Less space needed for storing goods …more space to display/sell goods Goods always new/fresh Reduced need for warehouse staff on site …less cost Can react to demand instead of anticipating change in demand for goods Disadvantages: More frequent deliveries needed …increased traffic/pollution Cannot take advantage of bulk discounts for very large orders Delays in deliveries will mean empty shelves …dissatisfied customers Max 6 for all advantages or all disadvantages 1 mark is available for a reasoned conclusion. [8]

Page 8 Mark Scheme Syllabus Paper Cambridge International AS/A Level – March 2016 9713 32 © Cambridge International Examinations 2016 8 Eight from: Benefits: Supermarket gets exact software for its needs Software will work exactly as required by supermarket Software has the features specifically for the supermarket needs Software does not have features which might distract the user/are not needed Owning the rights to software code means supermarket does not have to share with competitor Do not have on-going licencing/upgrade costs Software will work with current systems Drawbacks: Can take a long time to develop Costs more than off-the-shelf software because development costs are not shared Need to employ a software company/team of software developers to write it Limited help available …no internet forums or websites Need to provide employee training/cost of training If software development company goes out of business then need to redo software at greater cost Max 6 for all benefits or all drawbacks [8]