cameroon gce advanced level June 2022 ICT 2

cameroon gce advanced level June 2022 ICT 2

cameroon gce advanced level June 2022 ICT 2

Briefly explain the following terms:
(a) MODEM
(b) Firewall
(c) Router
(ii) (a) Storage devices arc either optical or magnetic. List two examples of each of optical and
magnetic;
(b) Describe one use of OCR to a secretary.
(c) Give ONE limitation of OCR.

(iii) Explain ONE application of computers in each of the following domains.
(a) Tourism
(b) Banking
(c) Marketing

2. (i) (a) Name TWO types of communication systems that can be used by business organisations
to enhance discussions between members of the organisation.
(b) For any of the systems in (a), discuss how it functions, stating clearly the hard ware and software
required.
(ii) Define the following and in each case illustrate ONE situation where they can be useful:
(a) Computer simulation.
(b) Control system.
(c) Robots.

(iii) (a) Apart from feasibility studies, outline two other activities involved in the investigation phase
of the SDLC. (2 marks)
(b) Describe the different types of feasibility studies carried out in the investigation phase
of the SDLC. (2 marks)
3. (i) Explain the following concepts as used in Algorithms.
(a) Algorithm
(b) Efficiency of an algorithm
(c) Sequence control structure
(ii) Describe each of the following transmission methods and give an example of each
(a) Parallel transmission
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(b) Serial transmission

(iii) The administration of a school is made up of 10 employees; each of them uses a personal computer
(PC) connected to a local area network (LAN). The network was later upgraded to intranet.
(a) Define intranet.
(b) Give the difference between the intranet and extranet.
(c) State 3 advantages of intranets to the school.
(d ) Explain tu-o security measures to be used to protect the intranet.

(2 marks