ytvet.com 19207201 COMPUTER MAINTENANCE, AND SUPPORT (THEORY) July 2017 Time: 3 hours THE KENYA NATIONAL EXAMINATIONS COUNCIL CRAFT CERTIFICATE IN INFORMATION TECHNOLOGY MODULE II COMPUTER MAINTENANCE AND SUPPORT ‘Theory 3hours INSTRUCTIONS TO CANDIDATI This paper consists of TWO sections; A and B Answer ALL the questions in section A and any FOUR questions in section B in the answer booklet provided. Candidates should answer the questions in English This paper consists of 4 printed pages. Candidates should check the question paper to ascertain that all the pages are printed as indicated and that no questions are mi 02017 The Kenya National Examinations Council Turn overeasytvet.com SECTION A (40 marks) Answer ALL the questions from this section. 1. @__Explain the term Jatency as used in magnetic disks. (2 marks) Gii)—_Describe the term thin client as used in computers. 2 marks) 2. Describe each of the following types of hard disk interfaces: @ we; 2 marks) (i) SATA. 2 marks) 3. Janice intends to use a USB port instead of a parallel port to connect peripheral devices on her computer. Outline four advantages of USB port that could be influencing her choice. (4 marks) 4. Explain two circumstances under which a computer user would use a wireless printer connection, (4 marks) 3. Explain two limitations of serial ports as used in computers. (4 marks) 6. Differentiate between parity and non-parity methods of detecting memory errors. (4 marks) 7. Explain two negative effects of electronic waste. (4 marks) 8. Outline four safety aspects that should be considered when selecting a power supply unit. (4 marks) 9. Distinguish between disk compressor and disk defragmenter utilities as used in computers. (4 marks) 10. Philip was required to conduct training on the use of new computer systems in his company. Explain two training methods that could have used. (4 marks) 19207201 duly 2077 2Me fa) (b) (©) @ (b) te) 3. * @ (b) () 1920/201 July 2017 easytvet.com SECTION B (60 marks) Answer any FOUR questions from this section. Computer technicians experience several challenges when carrying out routine maintenance. Outline three challenges they could experience. G marks) Harry was required to repair a client's monitor. Describe two tools that he could use, (4 marks) A lecturer described FAT 16 to a computer maintenance and support class. Outline four disadvantages of FAT 16 that he could have mentioned. (4 marks) Differentiate between duo core and quad core processor types. (4 marks) Daughter boards are commonly used when assembling computer (i) Outline three scenarios when they are applicable. (3 marks) Gi) Outline four examples of daughter boards in computers. (4 marks) Explain the function of each of the following keys during Power On Self Test (POST) process in a computer system. (i) Esc; (2 marks) (ii) FIO. (2 marks) Figure | shows an ATX power connector used in a motherboard. Outline the function. of each of the parts labeled (i) and (ii). (4 marks) a eoo0Goo0G) @ @ Figure | IT support professionals are required in every organization. (Outline two skills that should be exhibited by these professionals. (2 marks) Gi) Outline four typical routines procedures thal could be assigned to these professionals. (4 marks) Sarah noted that some of her documents in her computer were enerypted and she was forced to pay a certain {ce through Internet to decrypt her files. (i) Mdentify this type of attack. (1 mark) (ii) Outline four possible causes for the attack identified in (i). (4 marks) Amani was required to replace a faulty RAM chip in a computer. Outline four precautions that she could observe in order to accomplish the task. (4 marks) 3 Turn over14 fa) (b) © (d) 13. (a) ) (©) 1920/201 uly 2017 ytvet.com Figure 2 shows ports used to connect a computer monitor. Identify the ports labeled (i) (4 mark Figure 2 Peter replaced a printer cartridge with a new one but the printer produced distorted print outs. Explain three possible causes for this problem (6 marks) List two types of computer mouse. (Imark) Distinguish between primary memory and secondary memory as uscd in computers. canbe (4 marks) List four types of application software used in computers: (4 marks) Outline five factors that should be considered selecting a troubleshooting technique. (5 marks) Explain three circumstances under which an organization could consider disposing computers. (6 marks) THIS IS THE LAST PRINTED PAGE.