Edexcel ICT Insider

 Ashan works in an office with a network. (a) He uses his smartphone to make an online video call. (i) Which one of these does Ashan need to do this? (1) A WAN B WEP C WPA D WAP A WAN (ii) Describe how high latency affects his experience of the video call. (2) Latency is the amount of time it takes to send data between devices. High latency increases the time it takes for data to be transferred between devices and Ashan may experience lagging problem of the video call. (iii) State three ways in which latency can be reduced. (3) 1 Latency can be reduced by reducing distance between devices. 2 Latency can be reduced by reducing interference. 3 Latency can be reduced by reducing number of devices on the network. (b) State the role of an ISP. (1) To connect to the Internet, users need to subscribe to an ISP. ISPs provide connections to the telecommunications infrastructure that forms the framework for the internet. (c) State the function of a gateway. (1) A gateway connects two differe...

Sachini plays online games of her laptop. (a) List two ways Sachini can reduce the risk of developing repetitive strain injury (RSI). (2) 1 Sachini can use devices which are designed for efficiency and comfort, especially in a working environment. 2 Sachini can use ergonomic supports such as wrist pads. (b) The laptop has a built-in keyboard and mouse. Draw a diagram to show how Sachini can connect two other devices to the laptop that will enable her to control a game. Label each device and the connectivity you use in your diagram. (3) (c) Sachini creates a personal area network (PAN) with her laptop and her smartphone. Describe one way that Sachini could use a PAN with these devices. (2) Sachini could use a PAN to share her smartphone's 3G connection to her laptop by activating hotspot to get access to the internet. (d) Describe the function of a web browser. (2) A web browser is a type of software application used to request and display information stored on web servers. (e) Desc...

S achini and Ashan have two children, Kasuni and Deshan. They use digital devices in their daily lives. Sachini shops online for a new laptop. (a) Give two advantages of shopping online rather than on the high street. (2) 1 Online shopping allows customers to avoid having to travel to the high street. 2 Online shopping allows customers to easily reorder the same products that they bought last time, which save them time. (b) Which one of these uses magnetic media? (1) A Solid state disc B Flash disc C Hard disc  D Optical disc C Hard disc  (c) Sachini cannot access Wi‑Fi. Name one type of mobile phone connectivity that Sachini could use to access the Internet. (1) Sachini could use mobile broadband either 3G or 4G to access the Internet. (d) The amount of RAM in a computer can be increased. (i) Explain one benefit to the user of increasing the amount of RAM. (3) Benefit Having lots of RAM will make the computer run more smoothly. Explan...