The document contains questions and solutions for a repair course assignment. The questions cover topics like computer components, memory types, storage devices, partitioning, viruses, and troubleshooting common computer problems. For question 4, the student describes common computer problems like beeping noises, missing files, pop-up messages, lights on the system unit, and BIOS passwords. They explain potential causes and steps to resolve each issue.

1. ROYAL INSTITUTE OFROYAL INSTITUTE OF
BUSINESS ANDBUSINESS AND
TECHNICALTECHNICAL
EDUCATIONEDUCATION
REPAIR COURSE WORKREPAIR COURSE WORK

2. NAMENAME :: ISABIRYE AGGREYISABIRYE AGGREY
COURSE UNITCOURSE UNIT :: REPAIRREPAIR
COURSECOURSE :: COMPUTER SCIENCECOMPUTER SCIENCE
LEVELLEVEL :: DIPLOMA LEVELDIPLOMA LEVEL
YEARYEAR :: 11stst
YEAR 2YEAR 2ndnd
QUARTERQUARTER
EMAILEMAIL :: aggrey.isabirye@yahoo.comaggrey.isabirye@yahoo.com
LECTURER : NAMAZZI AGIE

3. QUESTIONSQUESTIONS
1.Using examples and diagrams where1.Using examples and diagrams where
necessary, write short notes on thenecessary, write short notes on the
following:following:
i)i) Computer mother board.Computer mother board.
ii)ii) BiosBios
iii)iii) Floppy interface cableFloppy interface cable
iv)iv) ProcessorProcessor
v)v) USB portsUSB ports
vi)vi) Hard disk driveHard disk drive

4. 2. Compare and contrast the following.2. Compare and contrast the following.
i)i) DRAM,SRAM,SDRAM & RDRAM.DRAM,SRAM,SDRAM & RDRAM.
ii)ii) CD-R &DVD-RWCD-R &DVD-RW
iii)iii) Serial port & parallel port.Serial port & parallel port.
iv)iv) Partitioning & formattingPartitioning & formatting
v)v) Graphics, sounds, networking & USB cards.Graphics, sounds, networking & USB cards.
3. Viruses are major headache to computer3. Viruses are major headache to computer
technicians world wide. Describe how pc’s gettechnicians world wide. Describe how pc’s get
infected by viruses. explain how you caninfected by viruses. explain how you can
prevent viruses from attacking pc’sprevent viruses from attacking pc’s
In case the pc is already infected. Describe howIn case the pc is already infected. Describe how
You can completely get rid of the viruses.You can completely get rid of the viruses.

5. 4.Francis has a problem with his computer,
explain the cause of each of these problems
listed below and outline the steps you take to
electrify each problem.
The system unit is beeping (making sound).
NTF file is missing.
Displaying pop messages.
Red light in the system unit
Bios password.

6. SOLUTIONSSOLUTIONS
1.i)Co1.i)Computer mother boardmputer mother board
Is the circuit board or logic board in aIs the circuit board or logic board in a
computer which provides a way for acomputer which provides a way for a
computer to connect, communicate &computer to connect, communicate &
work together. Like cpu as the centralwork together. Like cpu as the central
processing unit, hard drive, optical drive,processing unit, hard drive, optical drive,
network, video and sound card e.t.c.network, video and sound card e.t.c.

8. ii) Bios as basic input and output system.ii) Bios as basic input and output system.
Is a program in the personal computer ‘sIs a program in the personal computer ‘s
microprocessor uses to get the computermicroprocessor uses to get the computer
system started after you turn it off. Itsystem started after you turn it off. It
manages the data flow between computer’smanages the data flow between computer’s
operating system and attached devices likeoperating system and attached devices like
hard disk drive, video adapter, mouse andhard disk drive, video adapter, mouse and
key board.key board.
iii) Floppy interface cable.iii) Floppy interface cable.
Is a computer cable with 34 wires, it connectsIs a computer cable with 34 wires, it connects
the mother board’s FDD which is a floppythe mother board’s FDD which is a floppy
disk drive interface with one or two floppydisk drive interface with one or two floppy
disk drive.disk drive.

10. iv) processor.iv) processor.
Is a computer hardware that carries out theIs a computer hardware that carries out the
instructions of a computer program byinstructions of a computer program by
performing the basic arithmetical andperforming the basic arithmetical and
logical input and output operations of thelogical input and output operations of the
system.system.

11. v) USB port (universal serial bus) is anv) USB port (universal serial bus) is an
external standard interface that supportsexternal standard interface that supports
data transfer and connection of peripheraldata transfer and connection of peripheral
devices likedevices like
mouse, keyboard, printer to the computermouse, keyboard, printer to the computer

12. iv) Hard disk drive. Is the main data storageiv) Hard disk drive. Is the main data storage
device used for storing,retrieving digitaldevice used for storing,retrieving digital
information like operating system files andinformation like operating system files and
it is represented by letter c.it is represented by letter c.

13. 2.2.
i)i) DRAM,SRAM,SDRAM & RDRAM.DRAM,SRAM,SDRAM & RDRAM.
Dram (dynamic access memory) is a type ofDram (dynamic access memory) is a type of
random access memory that store eachrandom access memory that store each
bit of data in a circuit, Sram(static randombit of data in a circuit, Sram(static random
access memory) is a type of aaccess memory) is a type of a
semiconductor memory that uses bistalesemiconductor memory that uses bistale
latching circuitry to stormice eachlatching circuitry to stormice each
bit,Sdram(sychronous random accessbit,Sdram(sychronous random access
memory) is a dynamic random accessmemory) is a dynamic random access
memory that can run much higher clockmemory that can run much higher clock
speed than convectional memory,speed than convectional memory,

14. Rdram(rambus dynamic random accessRdram(rambus dynamic random access
memory) is a type of synchronous randommemory) is a type of synchronous random
access memory that transfer 1.6 billionaccess memory that transfer 1.6 billion
bytes per second implying that all arebytes per second implying that all are
random access memory storing data in arandom access memory storing data in a
computer.computer.
ii) CD-R &DVD-RWii) CD-R &DVD-RW
CD-R is a compact disc recordable while asCD-R is a compact disc recordable while as
DVD-RW is digital video display rewritableDVD-RW is digital video display rewritable
implying that it can be erased and newimplying that it can be erased and new
writings wrote on it in that all are storagewritings wrote on it in that all are storage
medias circular in shapemedias circular in shape

15. iii) Serial port & parallel port.iii) Serial port & parallel port.
Is a serial socket or a communicationIs a serial socket or a communication
physical interface through whichphysical interface through which
information transfers in and out one bit ainformation transfers in and out one bit a
time, it converts data from parallel totime, it converts data from parallel to
serial and changes electric presentationserial and changes electric presentation
of data while as parallel port is a socketof data while as parallel port is a socket
used for connecting devices likeused for connecting devices like
peripherals for example printer andperipherals for example printer and
keyboard that send and receive data thuskeyboard that send and receive data thus
all are physical interface that send andall are physical interface that send and
receive data through communication.receive data through communication.

16. iv) Partitioning and formattingiv) Partitioning and formatting
Partitioning is the making of the data storagePartitioning is the making of the data storage
devices visible to an operating system whiledevices visible to an operating system while
as formatting is a process of the preparingas formatting is a process of the preparing
data storage devices like the hard diskdata storage devices like the hard disk
drive implying that both are processesdrive implying that both are processes
carried on the hard disk.carried on the hard disk.
v) Graphics sound, networking & sound card.v) Graphics sound, networking & sound card.
Graphics are visual images, contrasted withGraphics are visual images, contrasted with
text produced by computer processingtext produced by computer processing
displayed on the screen or are stored asdisplayed on the screen or are stored as
data and come in two flavors of raster anddata and come in two flavors of raster and
victor graphics,victor graphics,

17. Sound is a continuous vibration that travelsSound is a continuous vibration that travels
through any medium and reach the receiverthrough any medium and reach the receiver
as ones ear, networking is a series ofas ones ear, networking is a series of
nodes which is designed to help people innodes which is designed to help people in
communicating for example exchanging ofcommunicating for example exchanging of
messages.messages.
3. How pc’s infected by the virus.3. How pc’s infected by the virus.
Pc get infected by the virus through insertingPc get infected by the virus through inserting
infected universal serial bus and flash cardinfected universal serial bus and flash card
into the computer.into the computer.
Through using unsecured websites while onThrough using unsecured websites while on
the internetthe internet

18. Through downloading files onto the PC.Through downloading files onto the PC.
Through unlimited installing of programmesThrough unlimited installing of programmes
by the multiple users of the PC.by the multiple users of the PC.
Through downloading attachments fromThrough downloading attachments from
unknown contacts to your Email.unknown contacts to your Email.
Accepting without reading the prompts thatAccepting without reading the prompts that
appears on the screen by the user.appears on the screen by the user.
Not running the latest updatesNot running the latest updates
Pirating music, software where you downloadPirating music, software where you download
them as free ware from the internet.them as free ware from the internet.
Having no antivirus or spy ware scannerHaving no antivirus or spy ware scanner

19. How can I prevent viruses from infectingHow can I prevent viruses from infecting
pcs.pcs.
By installing deep freezer in the pc.By installing deep freezer in the pc.
By using antivirus and spyware that areBy using antivirus and spyware that are
updated.updated.
Limiting the installation activity ofLimiting the installation activity of
different users to the pc by having USBdifferent users to the pc by having USB
security programs to scan and protectsecurity programs to scan and protect
viruses attacking the pc.viruses attacking the pc.
Through reading the message promptThrough reading the message prompt
that appear on the screenthat appear on the screen

20. By not downloading attachments to our emailBy not downloading attachments to our email
to unknown contacts.to unknown contacts.
By limiting programme installation to the pcBy limiting programme installation to the pc
by different users.by different users.
How you can you completely get ridHow you can you completely get rid
of the viruses incase the PC isof the viruses incase the PC is
already infectedalready infected ..
By scan the computer using antivirus.By scan the computer using antivirus.
By installing new operating system on yourBy installing new operating system on your
PC.PC.
By using deep freezers.By using deep freezers.
Reinstalling your applications on your PCReinstalling your applications on your PC

21. Run a complete antivirus scan to clean the backup.
Remove your hard disk and connect it as guest
disk in a different (clean) computer to run a clean
scan.
Boot from CD (compact disc) with its own set of
tools running its own kernel.
Keep your system patched by promptingly installing
windows updates and other softwares.
By not running as administrator by default.
By using good firewall tools.

22. 4. Causes of each of the problems listed4. Causes of each of the problems listed
below and outlined steps to electrifybelow and outlined steps to electrify
each problem.each problem.
The system unit is beeping (makingThe system unit is beeping (making
sound)sound)
System errors and they can be electrified bySystem errors and they can be electrified by
restarting the computer or reinstalling therestarting the computer or reinstalling the
operating system.operating system.
A failed keyboard to start and can beA failed keyboard to start and can be
electrified by reconnecting the keyboard,electrified by reconnecting the keyboard,
checking its cable on its port.checking its cable on its port.
Improper system unit connection and can beImproper system unit connection and can be
electrified by reconnecting the system unit.electrified by reconnecting the system unit.

23. NTF file is missingNTF file is missing
Corrupt operating system file or missing fileCorrupt operating system file or missing file
and can be electrified by reinstalling theand can be electrified by reinstalling the
operating system and using recovery tools.operating system and using recovery tools.
Improper switching off or abrupt power cut offImproper switching off or abrupt power cut off
and can be electrified by restating theand can be electrified by restating the
computer and selecting the Start ‘Windowscomputer and selecting the Start ‘Windows
normally’ to start.normally’ to start.
Displaying popup messagesDisplaying popup messages ..
Suspected virus by a spyware or antivirusSuspected virus by a spyware or antivirus
and can be electrified by Scanning theand can be electrified by Scanning the
computercomputer

24. Windows update or activation of popupWindows update or activation of popup
messages and display them.messages and display them.
Complete download and installing popupComplete download and installing popup
message and can be electrified by openingmessage and can be electrified by opening
the downloads and checking the installedthe downloads and checking the installed
programme for the soft ware.programme for the soft ware.
Red light in the system unit.Red light in the system unit.
Improper random access memoryImproper random access memory
Connection into the random access chipsConnection into the random access chips
and can be electrified reconnecting theand can be electrified reconnecting the
randon access memory into the randomrandon access memory into the random
access chips.access chips.

25. Bios passwordBios password
Blocking boot up and can be electrified byBlocking boot up and can be electrified by
resetting the password on your pc.resetting the password on your pc.
In working tangle networks and can beIn working tangle networks and can be
electrified by pressing the password onelectrified by pressing the password on
your pc.your pc.
RefereesReferees
www.about.com
www.webcrawler.com
http:En.wikipedia.com