State the role of an ISP.
State three categories Operating Systems grouped according to user interface
Identify the type of software used to compress files.
Utility Software
Mention at least two trends in the technological revolution of computers.
State the uses of 3D printers
Your friend wishes to install a wireless network in his office. Explain to him the difference between guided and unguided media
Explain the differences between parallel running and direct changeover as ways of implementing the new system.
Direct changeover – new system replaces existing system immediately/overnight
Parallel running – new system runs alongside/together with existing system
Parallel running – there is always the old system to fall back on in the event of the new system failing/information is not lost/always a second copy
Direct changeover – if things go wrong lose all data/old system is not available
Direct changeover – training is more difficult to organise
Parallel running – training can be gradual Parallel running is more expensive to implement than direct changeover....
Direct changeover is a quicker method of implementation than parallel running
Direct Changeover: The old system is stopped completely, and the new system is started. All of the data that used to be input into the old system, now goes into the new one.
Parallel Running: The new system is started, but the old system is kept running in parallel (side-by-side) for a while. All of the data that is input into the old system, is also input into the new one. Eventually, the old system will be stopped, but only when the new system has been proven to work.
State four factors to consider when acquiring computer software
When an image is inserted in a DTP document is selected, handles on its placeholders appear. State three uses of these handles
Fibre optic cable is available in either single-mode or multi-mode. Outline the characteristics of each mode.
Define the following
(a) Cookies
(b) Spyware
(c) Phishing
(d)Spam
(e) Pharming
(a) Cookies
(b) Spyware
(c) Phishing
(d)Spam
(e) Pharming
Distinguish between firmware and device drivers as used in computers. (2mrks)
State the contents of a feasibility study report
For your item named in (a) describe two different tasks that the microprocessor performs.
Explain one benefit to a user if the program is distributed as free software
State the areas where infra-red radio waves are used KCSE 2018
Describe the difference between distributed and sequential processing on how they process instructions
(ii) State what ROM and RAM store.
ROM stores BIOS / bootstrap / start-up
RAM stores currently executing programs and data
Identify one component common to all computers.
Suggest one disadvantage to the programmer of using a high-level language instead of a low-level language.