Question 6
(a) Use Fig. 1 to answer questions (i) to (vi)
Fig. 1
- What does Fig. 1 represent?
- Identify two output components in Fig. 1.
- Give the names for the parts labeled III, VI and VII.
- State one precautionary measure that should be taken to protect the set-up from power fluctuations while in use.
- Data entry into the system can be achieved through the parts labeled:
- Mention one device that can be used to access the part labeled VII.
(b) Figures 2 and 3 represent mass storage media. Use the figures to answer questions (i) to (iv).
(i) Identify the media represented by: Fig. 2 and Fig. 3
(ii) The transaction files of a company are to be recorded and accessed in the order which they arrive. Which of the media is most suitable for the purpose?
(iii) In which media will the stored data be accessed faster?
(iv) State the file access method for each medium. Fig. 2 and Fig. 3.
(c) A CCTV camera system has a 300 MB storage device. Each image size is 300 kB.
(i) How many images can be stored by the CCTV?
(ii) If the storage device is full, mention one measure that should be taken to ensure that the system continues to capture and store images without losing the already stored images.
Observation
The expected answers were:
(a) (i) Computer set-up/Computer Connections/ Computer Systems
(ii) I - Monitor
IV - Speaker
VIII - Printer
(iii) III - system unit
VI - Power supply/ Socket
VII - Internet/ Cloud
(iv) Use of AVR, UPS, Inverter, Power Stabilizer, Surge Protector
(v) II - Keyboard
V- Mouse
(vi) MODEM, VSAT, MOBILE PHONES
(b) (i) Fig 2: CD-ROM OR DVD-ROM
Fig 3: Magnetic tape/ Cassette (Audio, Videotape)
(ii) Magnetic tape
(iii) CD-ROM OR DVD-ROM
(iv) Fig 2: Direct, Random Access
Fig 3: Serial Access/ Sequential Access
(C) (i) 300MB = 300,000KB
Number of images = 300,000KB/300KB
= 1000 images OR
1024 images
(ii) Remove the storage device and replace it with a new one
OR
Backup the storage device and format it.
OR
Save in the Cloud
The question tested the practical knowledge of candidates on computer system set-up, technology on Internet access, technology on access to storage media, measurement of storage and backup technology.
Candidates demonstrated ability to identify hardware components of a computer system. They also showed good knowledge of storage media and backup technique.