Edexcel ICT Insider

Deshan buys a music CD in a store. (a) Deshan pays with a card using NFC. Explain why NFC speeds up the payment process. (2) NFC is a contactless payment method which speeds up the payment process because the card is simply tapped to make a payment, a PIN does not need to be entered. (b) The CD comes with access to a music streaming service. Describe how streaming works. (4) Part of the files is downloaded into temporary storage, known as buffer, to play immediately. This is played straight away while the rest of the file is also downloaded for playing. (c) Describe how the amount of bandwidth available affects Deshan's experience of streaming. (3) The amount of bandwidth available affects Deshan's experience as the lower the bandwidth available the slower the internet connectivity as there are more devices using the network which will decrease speeds. This means the music will buffer. (d) The payment system uses an open source operating system. (i) State what is meant by the t...

Kasuni studies online. (a) Which one of these is a user-generated reference site? (1) A Social network B Wiki C VLE D Online work space B Wiki (b) Which one of these is a method Kasuni could use to avoid plagiarising content? (1) A Bias check B Copy and paste C Paraphrasing D Efficient search C Paraphrasing (c) Describe how the key features of social bookmarking could be used by students completing a research project. (4) Social bookmarking lets users store URLs. The URLs can be stored and tagged with useful tags or keywords for future reference to find the useful sites. These tags can be shared with other people to reduce the workload. (d) Some teachers use OMR to reduce their workload when marking tests. Describe how OMR works. (2) OMR devices have a scanner that shines a light onto a form. The device then looks at the contrasting reflectivity of the light at certain positions on the form. It will detect the black marks because they reflect less light than the blank areas on the form...