Name of the Organization : Tamil Nadu Open University
Degree : Diploma in Computer hardware servicing
Document Type : Sample Question Paper
Year : 2015
Subject : Personal Computer Organisation

Website : http://www.tnou.ac.in/pqp/#1464003834724-b245cf45-d06e
Download Sample Question Papers :
LCS-1 : http://www.indianjobtalks.com/uploads/76049-LCS1.pdf
CNS-1 : http://www.indianjobtalks.com/uploads/76049-CNS-1.pdf
DCHS-1 : http://www.indianjobtalks.com/upload...9-DCHS1%20.pdf
DCHS-2 : http://www.indianjobtalks.com/upload...9-DCHS%202.pdf
DCHS-3 : http://www.indianjobtalks.com/upload...9-DCHS3%20.pdf
DCHS-4 : http://www.indianjobtalks.com/uploads/76049-DCHS4.pdf

Diploma in Computer Hardware Servicing Question Paper :
Personal Computer Organisation :
Time : 3 hours
Maximum marks : 75
PART A : (20 * 1 = 20 marks)
Answer ALL the questions.
1. Memory unit accessed by content is called ––––––––––––.
(a) Read only memory
(b) Programmable Memory
(c) Virtual Memory
(d) Associative Memory

2. The main memory in a Personal Computer (PC) is made of ––––––––––––.
(a) cache memory
(b) static RAM
(c) dynamic Ram
(d) Both (a) and (b)

3. Cache memory works on the principle of
––––––––––––.
(a) Locality of data
(b) Locality of memory
(c) Locality of reference
(d) Locality of reference and memory

4. Virtual memory consists of ––––––––––––.
(a) Static RAM
(b) Dynamic RAM
(c) Magnetic memory
(d) None of these

5. Generally Dynamic RAM is used as main memory in a computer system as it ––––––––––––.
(a) consumes less power
(b) has higher speed
(c) has lower cell density
(d) needs refreshing circuitry

6. Cache memory acts between ––––––––––––.
(a) CPU and RAM
(b) RAM and ROM
(c) CPU and Hard Disk
(d) None of these

7. The circuit used to store one bit of data is known as
(a) Register
(b) Encoder
(c) Decoder
(d) Flip Flop

8. Memory unit is one part of
(a) Input device
(b) Control unit
(c) Output device
(d) Central Processing Unit

9. The basic operations performed by a computer are
(a) Arithmetic operation
(b) Logical operation
(c) Storage and retrieve
(d) All the above

10. Primary memory stores
(a) Data alone
(b) Program alone
(c) Result alone
(d) All of these

11. Which of the following is not a valid size of a floppy disk?
(a) 8"
(b) 5¼ "
(c) 3½"
(d) 5½"

12. EPROM can be used for
(a) Erasing the contents of ROM
(b) Reconstructing the contents of ROM
(c) Erasing and constructing the contents of ROM
(d) Duplicating ROM

13. The two kinds of main memory are
(a) Primary and secondary
(b) Random and sequential
(c) ROM and RAM
(d) All of above

14. Memory unit accessed by content is called ––––––––––––.
(a) Read only memory
(b) Programmable Memory
(c) Virtual Memory
(d) Associative Memory

15. What characteristic of RAM memory makes it not suitable for permanent storage?
(a) too slow
(b) unreliable
(c) it is volatile
(d) too bulky

PART B : (5 ? 5 = 25 marks)
Answer any FIVE questions. :
21. Draw the block diagram of Mother Board.
22. Describe the principle of operation of computer monitor.
23. What are the characteristics of CRT? Explain.
24. Explain in detail about Inkjet printer.
25. Describe Bootstrapping using the BIOS.
26. Describe the common faults with Hard disk drive.
27. Write short notes on multiplexers.
28. Explain about platters and media.

PART C : (3 ? 10 = 30 marks)
Answer any THREE questions. :
29. Explain different types of Buses.
30. Discuss in detail about scanners.
31. Explain about Fax/Modem Installation Guidelines.
32. Describe details about standard keyboard Layouts.
33. Explain the differences between TV and computer monitor.

Computer Hardware Servicing :
SECTION A : (20 * 1 = 20 marks)
Answer ALL the questions. :
Choose the correct answer.
1. IDE cables have how many pins?
(a) 25
(b) 50
(c) 100
(d) 40

2. An important first step in troubleshooting which component in a laser printer is causing a jam is to:
(a) note where in the paper path the paper stops
(b) check all voltages
(c) look up error code
(d) remove the jammed paper

3. A parity error usually indicates a problem with:
(a) memory
(b) hard drive
(c) I/O controller
(d) power supply

4. In laser technology, what happens during the transfer stage?
(a) Residual toner is transferred to the waste receptacle
(b) The laser transfers the image from the drum to the paper.
(c) The image is transferred from the drum to the paper
(d) A negative charge is transferred to the surface of the drum

5. Which provides the fastest data access time?
(a) RAM
(b) ROM
(c) CD-ROM
(d) Hard disk

6. Which controller would support an external CD-ROM drive?
(a) ESDI
(b) ARLL
(c) MFM
(d) SCSI

7. In inkjet printers, what is the most common problem with the paper tray?
(a) nconsistent printing
(b) malfunctioning pick-up rollers
(c) misalignment of the sheet feeder
(d) None of the above

8. Which device uses a DMA channel?
(a) Modem
(b) Network Card
(c) Sound Card
(d) None of the above.

9. If a computer’s BIOS allows it, you can boot from a CD-ROM.
(a) True
(b) false

10. What allows you to print on both sides of the printer?
(a) Fuser
(b) duplexer
(c) toner cartridge
(d) None of the above

SECTION B : (5 * 5 = 25 marks)
Answer any FIVE questions.
21. Explain integrated mother board layout.
22. Explain dot – matrix printer and assemblies.
23. Explain how BIOS works.
24. Explain drum preparation and paper feed mechanism.
25. Explain the power – on – self test.
26. Explain POST test sequence and error message.
27. Draw the flowchart for power circuit troubleshooting.
28. Explain PC system unit layout.

SECTION C : (3 * 10 = 30 marks)
Answer any THREE questions. :
29. Explain detail about Intel Pentium microprocessor family.
30. Describe the history and types of Personal Computer Systems.
31. Explain about System Boot Sequence.
32. Explain about video card failure and I/O conflict.
33. Explain SMPS and front panel control.