ICT Revision-Tute 04 Chapter 04 – Digital communication 01) What is “Bandwidth”? …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 02) What is a buffer? …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 03) What is latency? …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 04) How do you identify latency? …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 05) What is “ping time’? …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 06) Explain the impact of bandwidth and latency on user experience. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 1 07) State 4 factors that affect speed and volume of data transfer. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 08) What is a network? …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 09) Name 4 major types of network. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 10) What is tethering? …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 11) Name 4 methods in which digital devices communicate. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 12) Name 2 benefits of satellite communication. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 13) Explain “GPS”. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 2 …………………………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………………………. 14) Explain “Digital Video Broadcasting”. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 15) Write 4 wired connection types. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 16) Discuss the benefits and drawbacks of USB and Ethernet. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 17) Write 2 wireless connection types. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 18) Discuss the benefits and drawbacks of Bluetooth and WI-FI. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 3 …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 19) What is infrared? Explain the use of infrared …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 20) Sarah is planning to get a network connection for her small company. Discuss the benefits and drawbacks of wired and wireless connection types and suggest a suitable connection type for Sarah. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 4 …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………….. 5
