Suggest an appropriate storage medium to store your assignment files. Justify your answer. (3 marks) 7. In your opinion, why the floppy disk in the old days had been obsolete? (2 marks) 8. Give TWO (2) examples of optical discs. (2 marks) 9. Identify an appropriate storage medium to store the huge volume of backup data of large organization. (1 mark) 10. Label the following: A: __________________ B: __________________ C: __________________ D: __________________ 11. Complete the following table: Type Access Description CD-ROM Compact disc – read only mode Cannot be written to or erased CD-R CD-RW
Page 33 2.5 Communications Links In the course of a day, it is likely you use, or use information generated by, one or more of these communications technologies. Chat rooms: Real-time typed conversation among two or more people on a computers or mobile devices connected to a network Email: Transmission of messages and files via a computer network Fax: Transmission and receipt of documents over telephone lines FTP: Permits users to transfer files to and from servers on the Internet GPS: Navigation system that assists users with determining their location, ascertaining directions Instant messaging: Real-time typed conversation with another connected user where you also can exchange photos, videos and other content Internet: Worldwide collection of networks that links millions of businesses, government agencies, educational institutions and individuals Newsgroups: Online areas in which users have written discussions about a particular subject RSS: Specification that enables web content to be distributed to subscribers Video conference : Real-time meeting between two or more geographically separated people who use a network to transmit audio and video Voice mail: Allows users to leave a voice message for one or more people VoIP: Conversation that take place over the Internet using a telephone connected to a computer, mobile device or other device Chat rooms Email Fax FTP GPS Instant messaging Internet Newsgroups RSS Video conference Voice mail VoIP Wireless Internet access points Wireless messaging services
Page 34 Wireless Internet access points: Enable users with completers and mobile devices to connect to the Internet wirelessly Wireless messaging services: Send and receive wireless messages to and from smartphones, mobile phones, handheld game devices using text messaging and picture/video messaging A communications device is hardware capable of transferring items from computers and devices to transmission media and vice versa. • Examples: modems, wireless access points and routers. • As shown in picture above, some communications involve cables and others are sent wirelessly.
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- Spring '18
- hoong sang wong
- Personal computer, Computer data storage