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How to use this COMPETENCY BASED LEARNING

MATERIAL

Welcome to the Competency Based Learning Material for the module, Maintaining

Computer System and Network. This learning material contains actiities for you tocomplete.

The unit of competency !Maintaining Computer Systems and Network" coers theknowledge, skills and attitudes re#uired for Computer $ardware Sericing. %t is one of themodules in the Core Competence at National Certificate Leel &NC %%'.

(ou are re#uired to go through a series of learning actiities in order to complete each ofthe learning outcomes of the module. %n each learning outcome, there are InformtionSheets! Resour"es Sheets n# Referen"e Mteri$sfor further reading to help you )etterunderstanding the re#uired actiities. *ollow these actiities and answer the self+checked.

et answer sheet from your trainer to reflect your answer for each self+check. %f you hae#uestion, please don-t hesitate to ask your facilitator for assistance.

Re"o%nition of Prior &ernin% 'RP&(

(ou hae some or most of the knowledge and skills coered in this learning material)ecause you hae.

ctual e/perience on the 0o)

lready complete the training area

%f you can demonstrate to you trainer that you are competent in a particular skill, youdon-t hae to do the same training again.

%f you feel hae some of the skills, talk to your trainer a)out haing them formallyrecogni1ed. %f you hae #ualified or a Certificate of Competence from preious training,show it to your trainer. %f the skills you ac#uired are still releant to the module, they may)ecome part of the eidence you can present for 23L.

t the end of this learning material is a learner-s diary. 4se this diary to recordimportant dates, 0o) undertaken and other workplace eents that will assist you in proiding

further details to your trainer or assessors. record of chieement is also proided for thetrainer to complete upon completion of the module.

This module was prepared to help you achiee the re#uired competency in performing3rogram in C. This will )e the source of information for you to ac#uire knowledge and skillsin this particular trade, with minimum superision or help from your trainer. With the aid ofthe materials, you will ac#uired the competency independently and at your own pace.

Talk to your trainer and agree in how you will )oth organi1ed the training of this unit.

2ead through the Competency Based Learning Material carefully. %t is diided intosections which coer all the skills and knowledge you need to successful complete

this module.


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Most pro)a)ly your trainer will also )e your superisor or manager. $e5She is there

to support you and show you a)out the correct way to do things. sk for help.

(our trainer will tell you a)out the important things you need to consider when you

are completing actiities and it is important that you listen and take notes.

(ou will )e gien plenty of opportunities to ask #uestions and practice on the 0o).

Make sure you practice your new skills during regular work shifts. This way you willimproe )oth your speed and memory and also your confidence.

Talk to more e/perienced workmates and ask for their guidance.

4se self check #uestions at the end of each section to test your own progress.

When you are ready, ask your trainer to watch you perform the actiities outlined in

the learning material.

s you work through the actiities, ask for written feed)ack on your progress. (our

trainer keeps feed)ack5pre+assessment reports for this reason. When you haesuccessfully completed each element, ask your trainer to mark on the reports thatyou are ready for assessment.

When you hae completed this module and feel confident that you hae hadsufficient practice, your trainer will arrange an appointment with the registeredassessor to assess you. The result of your assessment will )e recorded in yourcompetency achieement record.


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Terms n# Definition

Assessment 6 the gathering of eidence and the making of 0udgments )ased on that

eidence a)out indiiduals- students or trainees according to an agreed set of rules orstandards.

Certifi"tion 6 the proision of a certificate or award granted as the result of anassessment classes. %t signifies the completion of a course of study and5or the achieementof program of specified competence.

Com)uter6 %s an electronic deice capa)le to manipulate, sae, and restore data.

Hr#wre6 The tangi)le parts of the computer system

Pro"essor * )rain of a computer

Ke+,or#6 is an input deice similar to the typewriter key)oard used for entering data andinstruction.

&ernin% A"ti-ities6 can take many forms like7 readings, pro0ects, practice e/ercises,iewing media, and doing many things as a creatie learning guide writer can deice.

&ernin% Out"ome 6 clearly emphasi1es performance and knowledge gained )y thelearner, rather than the teaching5training actiities associates with it.

Peo)$ewre6 The one who manipulate the hardware and software

Softwre 6 The olatile parts of the computer system

Win#ows6 is a graphical user interface that employs icons, pull+down menu, and dialogue)o/es.

Memor+ 6 is one or more sets of chips that store data or program instruction, eithertemporarily or permanently.

Stor%e6 $olds data and program permanently een if the computer is turned 6 off.

S+stem Softwre6 any program-s that controls the computer-s $ardware

O)ertin% S+stem6 Tells the computer how to use its own components.

Networ. O)ertin% S+stem6 allows computer to communicate and share data across anetwork.

Uti$it+ Softwre6 program that makes the computer system to use or performs highlyspeciali1ed functions.

A))$i"tion Softwre6 Tells the computer how to accomplish specific tasks.


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Com)uter /irus6 as set of programs or instruction that hae capa)le or design to makeharm to other program or computer.

Anti-irus6 software or program use to )lock and detect computer irus and remoe it.

M$wre6 a short name for Malicious Software


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0UA&I1ICATION 2 Com)uter Hr#wre Ser-i"in% NC IIUNIT O1 COMPETENCY 2 Mintin Com)uter S+stems n# Networ.MODU&E TIT&E 2 Mintinin% Com)uter S+stems n# Networ.

INTRODUCTION2

This module proides an oeriew a)out the Computer System and Network.Computer hardware pro)lems are less common than software pro)lems &0ust think a)out allthe m$wreand irus running a)out the %nternet', and there are far fewer aria)les toconsider when learning to maintain computer system and network. The real trick is to goa)out it in a systematic matter, eliminating possi)ilities wheneer possi)le )efore you startpurchasing replacement parts. That-s why this module is made to help you.

4pon completion of this module, you hae to su)0ect yourself to your trainer forassessment. (ou will )e gien a certificate of completion as a proof that you met thestandard re#uirement &knowledge and skill' for this module. The assessment could )e

made in different methods, as prescri)ed in the competency standards.

&EARNING OUTCOMES2

Upon completion of this module, you must be able to

8. 3lan and prepare for the maintenance of computer systems and networks.

9. Maintain computer systems

:. Maintain Network systems

;. %nspect and test configured5repaired computer system and networks

ASSESSMENT CRITERIA

8. Maintenance planned and prepared with


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0u$ifi"tion 2 Com)uter Hr#wre Ser-i"in% NC IIMo#u$e Tit$e 2 Mintinin% Com)uter S+stem n# Networ.&ernin% Out"ome 34 2 P$n n# )re)re for the mintenn"e of "om)uters+stems

n# networ.s5Assessment Criteri 2

8. Maintenance planned and prepared with in thismodule.

(ou can ask the assistance of your trainerto show you and e/plain further the topicyou can-t understand.

45 Re#2%nformation sheet 8.9 in thismodule.


85 Re#2%nformation sheet 8.: in thismodule.


95 Answer se$f:"he". 45; Check your answer )y using the answerkey.


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IN1ORMATION SHEET 4

THEMATERIA&S! TOO&S! E0UIPMENTSANDTESTINGDE/ICESO


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a' Microsoft


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Pre$iminr+


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UNIT O1 COMPETENCY 2 Mintin Com)uter S+stem n# Networ.s

MODU&E TIT&E 2 Mintinin% Com)uter S+stem n# Networ.s

&EARNING OUTCOME 34 2 P$n n# )re)re for the mintenn"e of "om)uter

s+stems n# networ.s5

Answer Sheet 4 '&ernin% A"ti-it+ 4(

NAME2

.

8.

9.

:.

;.

.

?.

D.

E.

F.

8>.

B.

8.

9.

:.

;.

.

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D.

C.

8.

9.

:.


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Mo#e$ Answers 4

Check your answers with the model answers )elow

A5

8. Memory

9. Central 3rocessing 4nit

:. Mouse

;.


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PER1ORMANCE TEST

LearnerIs Name Gate

Competency7 3lan and 3repare for MaintenanceComputer System and Networks

Test ttempt8st 9nd :rd

G%2=CT%


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0u$ifi"tion 2 Com)uter Hr#wre Ser-i"in% NC IIMo#u$e Tit$e 2 Mintinin% Com)uter S+stem n# Networ.&ernin% Out"ome 38 2 Mintin Com)uter S+stems

ASSESMENT CRITERIA2

8. The normal functions of computer systems are checked and tested.9. The scheduled5periodic maintenance and cleaning are performed.:. The repairs5replacements and sudden )reakdowns responded in accordance with

esta)lished procedures.

Resour"es2

8. 3eter Norton-s, %ntroduction to Computers, Mcraw+$ill %nternational =dition.Copyright 9>>?, pp 9>+ :>

9. %nformation Sheet 9

:. World Wide We) and 3ersonal Computers

&EARNING E6PERIENCES7ACTI/ITIES

&ernin% A"ti-ities S)e"i$ Instru"tions

45 Re#2%nformation sheet 9.> in this

module.

(ou can ask the assistance of your trainer

to show you and e/plain further the topicyou can-t understand.

85 Re#2%nformation sheet 9.8 in thismodule.




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IN1ORMATION SHEET 85;

COMPUTERMAINTAINANCE

$ere is a step )y step guide on how to Mintin7Re)ir or trou,$eshoot Com)uter5

This is the normal procedure used )y most Com)uterTe"hni"insin 2epairing ortrou)leshootinga 3C. But it can )e done only after 3lanning and 3reparing, this is only forfuture reference7

Here re the ste)s to ,e m#e.

Check if the power switch is turned on. Try to plug a lamp into the wall socket to make sure power is aaila)le

Check if the power cord properly connected to the wall outlet and the computer

power socket. Check if the cord looks


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Take out all non+essential parts so that only the )asic part such as the mother)oard, powersupply, display card, controller and drie are left. (ou can pull+out the cards )y remoing thescrew as shown in the screen shot )elow.

2eplace each part one at a time, until the pro)lem reoccurs.

When you replace a part and the computerstops working, (ou know that part is the

reason for the pro)lem, %t can then )e replaced.

%f the computerstill doesn-t operate. 2emoe all the remaining cards including the display card and floppy controller. Turn on the power and check if the power supply is running. %f it runs, one of the

cards you 0ust remoed is )ad.

HE&P:1U& TIPS IN COMPUTER MAINTENANCE

%f you use your computer more than a few hours per day, we suggest you not to

turn off your computer at the end of the day. %nstead turn off only the monitor tosae electricity. Gaily power up and down makes the components e/posed tohigh and low temperature cycles that are not good for the life+time of the

components, particularly the critical ones such as hard dries, C34, andmemory. The temperature cycle would result in e/pansion+shrinking cycle for thecomponents. The life+time of electronic components would )e increased if theyare run at constant temperature with ade#uate entilation.

%f your area e/periences a few times of power outage per year, it is necessary to

use a 43S. Sudden power downs while the system is running may cause seeredamage to hard dries.

tape )ackup and a lock to make systems hard to moe are worthy inestment

for critical data. 4se your hand to touch and feel the coer of your computer at least once a

week. The coer should )e at room temperature. %f it feels warm there may )e apro)lem Check to make sure that the cooling fans on the power supply and C34
http://www.sacada2.net/tag/computer/http://www.sacada2.net/tag/computer/http://www.sacada2.net/http://www.sacada2.net/http://www.sacada2.net/tag/computer/http://www.sacada2.net/tag/computer/


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are working properly. Clean the air pathway on the )ack of the power supply on aregular )asis.


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Informtion sheet 858

2.1 Most common problems that "ou nee# to maintain in Computer an# $et%or&s an#ho% "ou can i* them.

+irusesThis is a big one. Viruses usually take the form of .exe files and are basically malicious softwarespecifically engineered to destroy your computer. The best way to fight these is via preventativemeasures. First thing you should (if you haven't already) is install a reputable antivirussoftware. The main problem with all the big name antivirus programs out there is that a lot ofviruses are specifically designed to bypass these programs because of their popularity.

!ersonally" # recommend $V% many people a lot more techsavvy than # swear by it. &henyou get a decent antivirus program you should regularly scan your computer or program the

antivirus software to regularly scan your computer for you if it has that feature (it probablywill).

$nother way you can prevent viruses is simply by being extra cautious about what you

download (especially if it's a .exe file" though viruses aren't limited to .exe files).

,ramente# har# #ri-ever time" your hard drive may become fragmented" thereby slowing down your computer. oushould therefore defragment your computer every few weeks or so. ust go to the start menu accessories system tools disk defragmenter.

-erheatin*omputers can generate a lot of heat" especially if they're left on for long periods of time. $

simple way to combat this is +ust to turn off your computer for a while and give it time to 'cooloff'. #f overheating is a recurring issue" you might want to look into investing in a larger coolingfan for your computer.

/ corrupte# reistr"The most common computer problem , F$- is a corrupted registry. #n a nutshell" the registrybasically stores all the information of all your computer's settings and configurations.


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Se$f Che". 4

Instru"tions7 nswer the following as indicated. 4se answer sheet to )e proided )y

your trainer.

A5 Define the fo$$owin% on +our own i#e4( UPS8( HARDDRI/E9( &AN@( NETWORK( COMPUTER UNITB( ESD


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&EARNING OUTCOME 38 2 Mintin Com)uter S+stems


NAME2

.

8.

9.

:.

;..

?.

B.

8. Monitor

9. Gisk Grie

:. *loppy Gisk ;. Laser 3rinter

. CG+2


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Mo#e$ Answers 8


A5

4( UPS * Interru)ti,$e Power Su))$+8( HARDDRI/E * Ser-es s Stor%e Me#i where OS is inst$$e#9( &AN * &o"$ Are Networ.@( NETWORK * Conne"tion of two or more Com)uters( COMPUTER UNIT * Refer to S+stem Unit or Who$e Com)uter SetB( ESD * E$e"tro:Stti" Dis"hr%e


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PER1ORMANCE TEST

LearnerIs Name Gate

Competency7 Maintain Computer SystemTest ttempt

8st 9nd :rd

G%2=CT%


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0u$ifi"tion 2 Com)uter Hr#wre Ser-i"in% NC IIMo#u$e Tit$e 2 Mintinin% Com)uter S+stem n# Networ.&ernin% Out"ome 39 2 Mintinin% Com)uter Networ.s

Assessment Criteri

8. The normal functions of network systems checked and tested.9. The scheduled5periodic maintenance and cleaning performed.:. The repairs5replacements and sudden )reakdowns responded in accordance with

esta)lished procedures.

Resour"es2

8. 3eter Norton-s, %ntroduction to Computers, Mcraw+$ill %nternational =dition.Copyright 9>>?, pp D>+ E>

9. %nformation Sheet :

:. World Wide We) and 3ersonal Computers



45 Re#2%nformation sheet :.> in this

module.



45 Re#2%nformation sheet :.8 in thismodule.




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IN1ORMATION SHEET 9

954 Wht is "om)uter networ.s

A computer networkis an interconnection of a group of computers. Networks may be classified by

wat is called te network layer at wic tey operate according to basic reference models

considered as standards in te industry suc as te four!layer model is internet protocol suite. "ile

te se#en!layer reference model is better known as $pen %ystems &nterconnection '$%&( constitutes

te ma)ority of networks use te &nternet *rotocol %uite '&*( as teir network model.

3.2 Maintaining a Computer Network

No matter ow you coose to use your computer network+ performing certain maintenance acti#ities

is essential to keep it running well. For e,ample+ monitoring incoming network traffic and "eb site

#isits elps ensure safe &nternet usage. Establising a network backup system tat keeps safe copies

of all of your digital data is also recommended.

3.3 Networking with Consumer Electronics

-onsumer electronics de#ices like game consoles+ personal and!eld gadgets+ ome entertainment

and ome security systems can often be connected to your ome network and te &nternet to increaseteir usefulness.

3.4 Improving Network Performance

$n te &nternet+ so!calledspeed testsmeasure te bandwidt of an &nternet connection. ou can often

employ #arious tweaksto your computer and network setup to increase &nternet performance. $ter

tools and tecni/ues e,ist to impro#e performance of local and wide area networks and applications.

3.5 sing Internet !oftware "pplications
http://harsha1988.blogspot.com/2008/01/what-is-computer-networks.htmlhttp://harsha1988.blogspot.com/2008/01/what-is-computer-networks.html


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Basic network software applications include Webbrowsers+ emailclients and instant messaging

clients. "ile tese are all popular on te &nternet+ pri#ate organi0ations also support tem internally

on teir intranets. ore ad#anced &nternet 2 intranet applications includeFTPand VoIP. Being able

to install+ configure and run tese software applications greatly increases a network3s usefulness.

icrosoft &nternet E,plorer &nstant essaging %ystems

F4* File 4ransfer

5o&* '5oice o#er &*( %ystems

Fo&* 'Fa, o#er &*(

3.# sing P2P Networks

*6* '*eer to *eer( &nternet file saring systems use distributed network tecni/ues and speciali0ed

protocols to support large!scale online file searcing+ saring and messaging. %ome *6* file saring

systems a#e been ea#ily critici0ed for enabling te saring of copyrigt material suc as

commercial music and #ideo files. *opular *6* file saring applications include Bit4orrent and

7ime"ire.

3.$ sing %irtual Private Networks &%PN' an( )emote "ccess

A Virtual Private Network (VPN)supports local or long!distance protected access to network

resources by tunnelingtroug sared public links. "ile 5*Ns offer one type of remote

accesssolution+ oter remote access

3.* sing Internet Pro+, !ervers

*ro,y ser#ers are &nternet gateways tat pro#ide network firewall+ connection saring+ and cacing

tecnology for computers on a pri#ate network. *ublic "eb pro,y ser#ers are also a#ailable on te

&nternet as a means to enable anonymous online surfing.

3.- sing !torage Networks

%torage networking utili0es speciali0ed de#ices designed to ser#e or back up large amounts of data

across local area networks. 4wo types of storage network tecnology e,ist ! %AN '%torage Area

Network( and NA% 'Network Attaced %torage(. A %AN supports large!scale network data storage+

retrie#al and replication typically for business networks. A NA% utili0es one or more file ser#ing

de#ices connected as peers on a local network.
http://compnetworking.about.com/od/internetexplorer/http://compnetworking.about.com/od/instantmessaging/http://compnetworking.about.com/od/ftpfiletransfer/http://compnetworking.about.com/od/voipvoiceoverip/http://compnetworking.about.com/od/voipvoiceoverip/g/fax_over_ip.htmhttp://compnetworking.about.com/od/internetexplorer/http://compnetworking.about.com/od/instantmessaging/http://compnetworking.about.com/od/ftpfiletransfer/http://compnetworking.about.com/od/voipvoiceoverip/http://compnetworking.about.com/od/voipvoiceoverip/g/fax_over_ip.htm


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Se$f Che". 9

Instru"tions7 nswer the following as indicated. 4se answer sheet to )e proided )y

your trainer.

A5 In Your Own Wor#! Wht is Com)uter Networ.


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&EARNING OUTCOME 39 2 Mintinin% Com)uter Networ.s


NAME2

A5


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:';'

Mo#e$ Answers 4


A5 "om)uter networ. is an interconnection of a group of computers. Networks may)e classified )y what is called the network layer at which they operate according to)asic reference models considered as standards in the industry such as the four+layer model is internet protocol suite


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8' Network 3rinter9' Network Serer:' 3ersonal Computer &Tower Type';' 3ersonal Computer &Gesktop Type'


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PER1ORMANCE TEST

LearnerIs Name Gate

Competency7 Maintain Computer Networks

Test ttempt

8st 9nd :rd

G%2=CT%


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0u$ifi"tion 2 Com)uter Hr#wre Ser-i"in% NC IIMo#u$e Tit$e 2 Mintinin% Com)uter S+stem n# Networ.&ernin% Out"ome 3@ 2 Ins)e"t n# test "onfi%ure#7re)ire# "om)uters+stem

n# networ.s

Assessment Criteri

8. Computer system and network checked to ensure safe operation.9. *inal inspection and testing taken to conform with manufacturer specifications.:. 2eports prepared and completed to company regulations.

Resour"es2

;. 3eter Norton-s, %ntroduction to Computers, Mcraw+$ill %nternational =dition.Copyright 9>>?, pp :>9+ :;8

. %nformation Sheet ;

?. World Wide We) and 3ersonal Computers



45 Re#2%nformation sheet ;.> in this

module.



95 Answer se$f:"he". @5; Check your answer )y using the answerkey.


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IN1ORMATION SHEET 9Che".in% +our "om)uter for Sfet+

%f you use your computer more than a few hours per day, we suggest you not to turn off your

computer at the end of the day. %nstead turn off only the monitor to sae electricity. Gailypower up and down makes the components e/posed to high and low temperature cyclesthat are not good for the life+time of the components, particularly the critical ones such ashard dries, C34, and memory. The temperature cycle would result in e/pansion+shrinkingcycle for the components. The life+time of electronic components would )e increased if theyare run at constant temperature with ade#uate entilation.

%f your area e/periences a few times of power outage per year, it is necessary to use a 43S.

Sudden power downs while the system is running may cause seere damage to hard dries. tape )ackup and a lock to make systems hard to moe are worthy inestment for critical

data. 4se your hand to touch and feel the coer of your computer at least once a week. The coer

should )e at room temperature. %f it feels warm there may )e a pro)lem Check to make surethat the cooling fans on the power supply and C34 are working properly. Clean the airpathway on the )ack of the power supply on a regular )asis.

To sae yourself alot of money and unneedless trips to the computer shop for repairs,there

are a series of ery simple steps you can take to keep your new computer running fast andefficient. Myself,% hae windows /p home edition running on my computer. % find it to )e the)est system out there at the moment.The choice is of course yours as to what operatingsystem you install on your machine. When you get your new computer home and youconfigure an internet connection,the first thing % recommend that you do is to get to thewindows update site. The site will automatically update your new operating system with files

to preent people on other computers from accessing your data. Ne/t step is to install ananti+irus and spyware program on your computer.

Before you do anything, make sure the computer is unplugged from the outlet and is

completely turned off Ne/t is to get a screwdrier for those little round screws you will needto undo to get inside your case. When )oth sides of the case are remoed,you will need acan of compressed air..you can )uy this from any computer store. (ou then spray all theareas inside the case..you will see the dust and dirt flyng off from the places you sprayed.Going this ; times a year&eery : months'%s a great way to sae a lot of money and keepyour computer running like its )rand new.

Trou,$eshootin% Te"hniFue for Networ.in% Mintenn"e

45 If +ou "nt "onne"t to ser-er or if Win#ows re)orts n error fter +ou #ou,$e:"$i". Networ.Nei%h,orhoo#! tr+ the fo$$owin% first2

Make sure youIre using the driers that are on the driers disk that ships with the network

interface card &N%C'.

Make sure the drier is loaded and the protocols are )ound. Check the Geice 3roperties list

for trou)le indicators &an O@O or OO sym)ol'.

Test the N%C adapter with the diagnostic utilities that often came with the drier installation.

Check with your LN administrator + you may need to install additional networking software.

85 If the )ro,$em )ersists! fo$$ow these %ui#e$ines2

M.e sure the ",$e is inst$$e# )ro)er$+. The network ca)le must )e securely attached at

)oth 2P; connections &adapter and hu)'. The ma/imum allowa)le distance from adapter tohu) is 8>> meters. %f the ca)le is attached and the distance is within accepta)le limits )ut the


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pro)lem persists, try a different ca)le. %f youIre directly connecting two computers without ahu) or switch, use a crossoer ca)le.

Try another network ca)le.

Che". the &ED &i%hts on the NIC. Before the L=Gs can )e used for trou)leshooting, the

network interface card &N%C' must )e connected to the network and the network drier must)e installed. Most N%Cs come with L=Gs near the connection. The meaning of the L=G

signals may )e different from one manufacturer to the other. $ere is a common L=Gdescription for :C58>>BT dual speed N%C. 3lease consult your N%C manual for anydifference.

/E0 0escription 1lashing !tea(, &n' ff

18 7N9 Green: 7ink integrity ;e#ersed polarity Good 18B4 connectionNo connection between N&-

CHS-Module-3-Maintain Computer System and Network

Documents

Transcript of CHS-Module-3-Maintain Computer System and Network