CBLM-Chs-II-Backupdoc.pdf

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Institution:

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COMPETENCY BASED LEARNING MATERIAL

Sector:

Information & Communications Technology Computer Hardware Servicing - NC II

Distinctive Area of Competence and Qualifications:

Unit of Competency:
MAINTAIN COMPUTER SYSTEMS AND NETWORK

Module Title:
MAINTAINING COMPUTER SYSTEMS AND NETWORK

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 acti ities for you to complete. The unit of competency !Maintaining Computer Systems and Network" co ers the knowledge, skills and attitudes re#uired for Computer $ardware Ser icing. %t is one of the modules in the Core Competence at National Certificate Le el &NC %%'. (ou are re#uired to go through a series of learning acti ities in order to complete each of the learning outcomes of the module. %n each learning outcome, there are Inform tion Sheets! Resour"es Sheets n# Referen"e M teri $s for further reading to help you )etter understanding the re#uired acti ities. *ollow these acti ities and answer the self+checked. ,et answer sheet from your trainer to reflect your answer for each self+check. %f you ha e #uestion, please don-t hesitate to ask your facilitator for assistance. Re"o%nition of Prior &e rnin% 'RP&( (ou ha e some or most of the knowledge and skills co ered in this learning material )ecause you ha e. • • .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, you don-t ha e to do the same training again. %f you feel ha e some of the skills, talk to your trainer a)out ha ing them formally recogni1ed. %f you ha e #ualified or a Certificate of Competence from pre ious training, show it to your trainer. %f the skills you ac#uired are still rele ant to the module, they may )ecome part of the e idence you can present for 23L. .t the end of this learning material is a learner-s diary. 4se this diary to record important dates, 0o) undertaken and other workplace e ents that will assist you in pro iding further details to your trainer or assessors. . record of .chie ement is also pro ided for the trainer to complete upon completion of the module. This module was prepared to help you achie e the re#uired competency in performing 3rogram in C. This will )e the source of information for you to ac#uire knowledge and skills in this particular trade, with minimum super ision or help from your trainer. With the aid of the 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 di ided into sections which co er all the skills and knowledge you need to successful complete this module. Most pro)a)ly your trainer will also )e your super isor 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 acti ities and it is important that you listen and take notes. (ou will )e gi en 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 will impro e )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 acti ities outlined in the learning material. .s you work through the acti ities, ask for written feed)ack on your progress. (our trainer keeps feed)ack5pre+ assessment reports for this reason. When you ha e successfully completed each element, ask your trainer to mark on the reports that you are ready for assessment. When you ha e completed this module and feel confident that you ha e had sufficient practice, your trainer will arrange an appointment with the registered assessor to assess you. The result of your assessment will )e recorded in your competency achie ement record.

Terms n# Definition
Assessment 6 the gathering of e idence and the making of 0udgments )ased on that e idence a)out indi iduals- students or trainees according to an agreed set of rules or standards. Certifi" tion 6 the pro ision of a certificate or award granted as the result of an assessment classes. %t signifies the completion of a course of study and5or the achie ement of program of specified competence. Com)uter 6 %s an electronic de ice capa)le to manipulate, sa e, and restore data. H r#w re 6 The tangi)le parts of the computer system Pro"essor * . )rain of a computer Ke+,o r# 6 is an input de ice similar to the typewriter key)oard used for entering data and instruction. &e rnin% A"ti-ities 6 can take many forms like7 readings, pro0ects, practice e/ercises, iewing media, and doing many things as a creati e learning guide writer can de ice. &e rnin% Out"ome 6 clearly emphasi1es performance and knowledge gained )y the learner, rather than the teaching5training acti ities associates with it. Peo)$ew re 6 The one who manipulate the hardware and software Softw re 6 The olatile parts of the computer system Win#ows 6 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, either temporarily or permanently. Stor %e 6 $olds data and program permanently e en if the computer is turned 6 off. S+stem Softw re 6 any program-s that controls the computer-s $ardware O)er tin% S+stem 6 Tells the computer how to use its own components. Networ. O)er tin% S+stem 6 allows computer to communicate and share data across a network. Uti$it+ Softw re 6 . program that makes the computer system to use or performs highly speciali1ed functions. A))$i" tion Softw re 6 Tells the computer how to accomplish specific tasks. Com)uter /irus 6 as set of programs or instruction that ha e capa)le or design to make harm to other program or computer. Anti-irus 6 . software or program use to )lock and detect computer irus and remo e it. M $w re 6 a short name for Malicious Software

0UA&I1ICATION 2 Com)uter H r#w re Ser-i"in% NC II UNIT O1 COMPETENCY 2 M int in Com)uter S+stems n# Networ. MODU&E TIT&E 2 M int inin% Com)uter S+stems n# Networ. INTRODUCTION2 This module pro ides an o er iew a)out the Computer System and Network. Computer hardware pro)lems are less common than software pro)lems &0ust think a)out all the m $w re and irus running a)out the %nternet', and there are far fewer aria)les to consider when learning to maintain computer system and network. The real trick is to go a)out it in a systematic matter, eliminating possi)ilities whene er possi)le )efore you start purchasing replacement parts. That-s why this module is made to help you. 4pon completion of this module, you ha e to su)0ect yourself to your trainer for assessment. (ou will )e gi en a certificate of completion as a proof that you met the standard re#uirement &knowledge and skill' for this module. The assessment could )e made in different methods, as prescri)ed in the competency standards. &EARNING OUTCOMES2 Upon completion of this module, you must be able to 8. 3lan and prepare for the maintenance of computer systems and networks. 9. Maintain computer systems :. Maintain Network systems ;. %nspect and test configured5repaired computer system and networks ASSESSMENT CRITERIA 8. 9. :. Maintenance planned and prepared with <$S policies and procedures. The materials, tools, e#uipments and testing de ices o)tained and checked. Computer systems and networks checked, identified and maintained with specifications and re#uirements to conform with manufacturers.

PRERE0UISITES2 Before you tackle this module, must complete first the following competencies7 8. Tools competencies. 9. 3C <peration competencies.

0u $ifi" tion Mo#u$e Tit$e &e rnin% Out"ome 34 Assessment Criteri 8. 9. :. ;. Resour"es2

2 2 2 2

Com)uter H r#w re Ser-i"in% NC II M int inin% Com)uter S+stem n# Networ. P$ n n# )re) re for the m inten n"e of "om)uter s+stems n# networ.s5

Maintenance planned and prepared with <$S policies and procedures. The materials, tools, e#uipments and testing de ices o)tained and checked. Computer systems and networks checked, identified and maintained with specifications and re#uirements to conform with manufacturers.

8. 3eter Norton-s, %ntroduction to Computers, Mc,raw+$ill %nternational =dition. Copyright 9>>?, pp ;+ 9> 9. %nformation Sheet 8 :. World Wide We) and 3ersonal Computers &EARNING E6PERIENCES7ACTI/ITIES &e rnin% A"ti-ities 45 Re #2 %nformation sheet 8.> in this module. S)e"i $ Instru"tions (ou can ask the assistance of your trainer to show you and e/plain further the topic you can-t understand.

45 Re #2 %nformation sheet 8.9 in this module.

(ou can ask the assistance of your trainer to show you and e/plain further the topic you can-t understand.

85 Re #2 %nformation sheet 8.: in this module.

(ou can ask the assistance of your trainer to show you and e/plain further the topic you can-t understand. Check your answer )y using the answer key.

95 Answer se$f:"he". 45;

IN1ORMATION SHEET 4 THE MATERIA&S! TOO&S! E0UIPMENTS AND TESTING DE/ICES O<TAINED AND CHECKED5
454 Common H n# too$s n# their uses Tools are defined as implements used to modify raw materials for human use. Tools can )e considered as e/tension of the human hand there)y increasing g its speed, power, and accuracy. 458 Im)ort n"e of Too$s Advanta!es of usin! the proper tools 8. =fficiency of the work :. Speed of accomplishment is faster 9. $igh #uality of work is achie ed ;. .ccuracy

"o#ever, these advanta!es depend upon the three factors, namely: 8. 9. :. . aila)ility and sufficiency of materials =/perience and skill of the workers in their respecti e fields Tools and e#uipment of good #uality

459 The #ifferent .in#s of too$s m +,e "$ ssifie# ""or#in% to their uses2 • • • $and Tools for assem)ly and disassem)ly of computer peripherals 8' Screwdri er 9' 3lies :' wire cutters Cleaning Tools for remo ing dirt and o)stacles 8' Compress .ir 9' Brush ;' Cleaning Compound 4tility Tools for Software Trou)leshooting 8' <perating Software a' Microsoft Windows )' 4ni/ Win9>>> Solaris Windows @3 Sym)ian Windows Aista c' Linu/ d' Macintosh 4)untu <penSuse Mandri a 2edhat 9' .nti irus a' Norton .nti irus &Symantec Company' )' . ast .nti irus &.lwil' c' 3C cillin &Trend' :' .pplication 3rogram a' Microsoft <ffice )' Corel,raphic Suite c' .do)e Creati e Suite &3hotoshop'

Pre$imin r+ < t"h 8
A5 I#entif+ the fo$$owin% #es"ri)tions5 BBBBBBBBBBBBBBBBBBBBB8. <ne or more sets of chips that store data or program instruction BBBBBBBBBBBBBBBBBBBBB9. %t is a main )rain of a Computer System BBBBBBBBBBBBBBBBBBBBB:. .n input de ice used to point o)0ects and select particular application. BBBBBBBBBBBBBBBBBBBBB;. . 3rograms that controls the computer-s hardware, it stored in a chip BBBBBBBBBBBBBBBBBBBBBC. . program that allows the computer to communicate to each other using network BBBBBBBBBBBBBBBBBBBBB?. %t makes the computer system to use highly speciali1ed functions BBBBBBBBBBBBBBBBBBBBBD. %t tells the computer to accomplish specific tasks. BBBBBBBBBBBBBBBBBBBBBE. %t holds or store data permanently BBBBBBBBBBBBBBBBBBBBBF. Compose of %cons and Menus and also program )o/es BBBBBBBBBBBBBBBBBBBBB8>.%t refers to us who use computer <5 & ,e$ the #ifferent ) rts of Com)uter H r#w re , se# on +our 1 mi$i ri= tion

11

B A

D

G H F E

C. What are the Tools use in Computer Maintenance? (19 – 30) 19. 20. 21.

22.

D. Most common problems in Maintainin

Computer !"stem an# $et%or&s (31'(0)

UNIT O1 COMPETENCY MODU&E TIT&E &EARNING OUTCOME 34

2 2 2

M int in Com)uter S+stem n# Networ.s M int inin% Com)uter S+stem n# Networ.s

P$ n n# )re) re for the m inten n"e of "om)uter s+stems n# networ.s5

Answer Sheet 4 '&e rnin% A"ti-it+ 4( NAME2 BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB .. 8. 9. :. ;. C. ?. D. E. F. 8>. B. 8. 9. :. ;. C. ?. D.

C. 8. 9. :.

Mo#e$ Answers 4
Check your answers with the model answers )elow A5 8. Memory 9. Central 3rocessing 4nit :. Mouse ;. <perating System C. Network <perating System ?. 4tility Software D. .pplication Software E. Storage F. Windows 8>. 3eopleware <5 .. CG2<M B. $.2GG%SH C. M=M<2( G. M%C2<32<C=SS<2 =. S<4NG C.2G *. A%G=< C.2G ,. S(ST=M 4N%T $. M<T$=2B<.2G C5 8. $and + Tools 9. Cleaning Tools :. 4tility Tools

PER1ORMANCE TEST LearnerIs Name Competency7 Gate 3lan and 3repare for Maintenance Computer System and Networks Test .ttempt 8st 9nd :rd

G%2=CT%<NS7 Le el C.LL %NST24CT<2, ask .chie ed instructor to assess your performance in the following critical task and performance criteria )elow. (ou will )e rated )ased on the o erall e aluation on the right side.

<A=2.LL =A.L4.T%<N 3=2*<2M.NC= L=A=LS

;. Can perform this skill without super ision and initiati e and adapta)ility to pro)lem situations. :. Can perform this skill satisfactorily without assistance or super ision. 9. Can perform this skill satisfactorily )ut re#uires assistance and5or super ision. 8. Can perform parts of this skill satisfactorily, )ut re#uires considera)le assistance and5or super ision. %nstructor will initial le el achie ed.

PER1ORMANCE STANDARDS YES NO N7A 1or ""e)t ,$e "hie-ement! $$ items shou$# re"ei-e >Yes? or >N7A? res)onse5 • Components of the Computer $ardware and Software are properly identified. • • • Tools and work area were set up accordingly. 3ersonal 3rotecti e =#uipment is present in area <ccupational $ealth and Safety is practiced correctly

3repared )y7 Romme$ P torito

0u $ifi" tion Mo#u$e Tit$e &e rnin% Out"ome 38 ASSESMENT CRITERIA2

2 2 2

Com)uter H r#w re Ser-i"in% NC II M int inin% Com)uter S+stem n# Networ. M int in Com)uter S+stems

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, Mc,raw+$ill %nternational =dition. Copyright 9>>?, pp 9>+ :> 9. %nformation Sheet 9 :. World Wide We) and 3ersonal Computers &EARNING E6PERIENCES7ACTI/ITIES &e rnin% A"ti-ities 45 Re #2 %nformation sheet 9.> in this module. S)e"i $ Instru"tions (ou can ask the assistance of your trainer to show you and e/plain further the topic you can-t understand.

85 Re #2 %nformation sheet 9.8 in this module.

(ou can ask the assistance of your trainer to show you and e/plain further the topic you can-t understand.

95 Answer se$f:"he". 85;

Check your answer )y using the answer key.

IN1ORMATION SHEET 85;
COMPUTER MAINTAINANCE $ere is a step )y step guide on how to M int in7Re) ir or trou,$eshoot Com)uter5 This is the normal procedure used )y most Com)uter Te"hni"i ns in 2epairing or trou)leshooting a 3C. But it can )e done only after 3lanning and 3reparing, this is only for future 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 a aila)le Check if the power cord properly connected to the wall outlet and the computer power socket. Check if the cord looks <H and undamagedJ %f it looks damaged, replace it. <pen the system unit and push down on all the chips, Aideo Card, Sound Card, Modem or L.N cards, Memory and the C34 to make sure they are seated properly.

Groun# Yourse$f to A-oi# St ti" E$e"tri" Ch r%es But )efore going through with this process, you should turn your Computer off and disconnect the power cord. %t is also important to ground yourself )y touching the frame of the case )efore going through the trou)leshooting process. .ll of your 3C-s "om)onents are sensiti e to static electric charges.

• •

Check the power connector from the power supply to the mother)oardK 3ull out and reinsert all the cardsL try placing them in different slots.

Take out all non+essential parts so that only the )asic part such as the mother)oard, power supply, display card, controller and dri e are left. (ou can pull+out the cards )y remo ing the screw 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 computer stops working, (ou know that part is the reason for the pro)lem, %t can then )e replaced. %f the computer still doesn-t operate. 2emo e 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 remo ed 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 to sa e electricity. Gaily power up and down makes the components e/posed to high and low temperature cycles that are not good for the life+time of the components, particularly the critical ones such as hard dri es, C34, and memory. The temperature cycle would result in e/pansion+shrinking cycle for the components. The life+time of electronic components would )e increased if they are 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 se ere damage to hard dri es. . tape )ackup and a lock to make systems hard to mo e are worthy in estment for critical data. 4se your hand to touch and feel the co er of your computer at least once a week. The co er should )e at room temperature. %f it feels warm there may )e a pro)lemM Check to make sure that the cooling fans on the power supply and C34 are working properly. Clean the air pathway on the )ack of the power supply on a regular )asis.

Inform tion sheet 858
2.1 Most common problems that "ou nee# to maintain in Computer an# $et%or&s an# ho% "ou can )i* them. +iruses This is a big one. Viruses usually take the form of .exe files and are basically malicious software specifically engineered to destroy your computer. The best way to fight these is via preventative measures. First thing you should (if you haven't already) is install a reputable anti virus software. The main problem with all the big name anti virus programs out there is that a lot of viruses are specifically designed to bypass these programs because of their popularity. !ersonally" # recommend $V% many people a lot more tech savvy than # swear by it. &hen you get a decent anti virus program you should regularly scan your computer or program the anti virus software to regularly scan your computer for you if it has that feature (it probably will). $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). ,ra mente# har# #ri-e 'ver time" your hard drive may become fragmented" thereby slowing down your computer. (ou should therefore de fragment 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 'cool off'. #f overheating is a recurring issue" you might want to look into investing in a larger cooling fan for your computer. / corrupte# re istr" The most common computer problem ,( F$- is a corrupted registry. #n a nutshell" the registry basically stores all the information of all your computer's settings and configurations.

Se$f Che". 4
Instru"tions7 .nswer the following as indicated. 4se answer sheet to )e pro ided )y your trainer. A5 Define the fo$$owin% on +our own i#e 4( UPS 8( HARDDRI/E 9( &AN @( NETWORK A( COMPUTER UNIT B( ESD <5 Gi-e Definition of the #ifferent ) rts of Com)uter s+stem , se# on +our i#e 5

C. Most common problems in Maintainin

Computer !"stem an# $et%or&s

UNIT O1 COMPETENCY MODU&E TIT&E &EARNING OUTCOME 38

2 2 2

M int in Com)uter S+stem n# Networ.s M int inin% Com)uter S+stem n# Networ.s

M int in Com)uter S+stems

Answer Sheet 8 '&e rnin% A"ti-it+ 8( NAME2 BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB .. 8. 9. :. ;. C. ?.

B. 8. Monitor N 9. Gisk Gri e N :. *loppy Gisk N ;. Laser 3rinter N C. CG+2<M N ?. CG+2<M G2%A= N D. Hey)oard N E. Mouse N F. Modem N 8>. Speaker N 88. Memory N

C. 45 85 95 @5

Mo#e$ Answers 8
Check your answers with the model answers )elow 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 A( COMPUTER UNIT * Refer to S+stem Unit or Who$e Com)uter Set B( ESD * E$e"tro:St ti" Dis"h r%e <5 8. Monitor N 3rimary <utput Ge ice 9. Gisk Gri e N . CG+2<M or <ptical Gisk Gri er where CG or GAG is inserted :. *loppy Gisk N Giskette or <)solete Storage Media ;. Laser 3rinter N . kind of printer in which laser toner is used to print or gi e output C. CG+2<M N Compact Gisk 6 2ead <nly Memory ?. CG+2<M G2%A= N Compact Gisk 6 2ead <nly Memory Gri e D. Hey)oard N . primary input Ge ice E. Mouse N . 3ointing Ge ice F. Modem N Modulator 6 Gemodulator 8>. Speaker N 4se to gi e output for audio 88. Memory N . kind of de ice that can )e used as temporary storage C5 8. Airuses 9. *ragmented $ard Gri e :. < erheating ;. Corrupted 2egistry

PER1ORMANCE TEST LearnerIs Name Competency7 Maintain Computer System Gate Test .ttempt 8st 9nd <A=2.LL =A.L4.T%<N 3=2*<2M.NC= L=A=LS :rd

G%2=CT%<NS7 Le el C.LL %NST24CT<2, ask .chie ed instructor to assess your performance in the following critical task and performance criteria )elow. (ou will )e rated )ased on the o erall e aluation on the right side.

;. Can perform this skill without super ision and initiati e and adapta)ility to pro)lem situations. :. Can perform this skill satisfactorily without assistance or super ision. 9. Can perform this skill satisfactorily )ut re#uires assistance and5or super ision. 8. Can perform parts of this skill satisfactorily, )ut re#uires considera)le assistance and5or super ision. %nstructor will initial le el achie ed.

PER1ORMANCE STANDARDS YES NO N7A 1or ""e)t ,$e "hie-ement! $$ items shou$# re"ei-e >Yes? or >N7A? res)onse5 • Components of the Computer $ardware and Software are properly identified. • • • •   Tools and work area were set up accordingly. 3ersonal 3rotecti e =#uipment is present in area <ccupational $ealth and Safety is practiced correctly 3roper use of hand 6tools is applied .re all stated in %nformation Sheet are properly applied .re they participate in an computer maintenance study

3repared )y7 Romme$ P torito

0u $ifi" tion Mo#u$e Tit$e &e rnin% Out"ome 39 Assessment Criteri

2 2 2

Com)uter H r#w re Ser-i"in% NC II M int inin% Com)uter S+stem n# Networ. M int inin% Com)uter Networ.s

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, Mc,raw+$ill %nternational =dition. Copyright 9>>?, pp D>+ E> 9. %nformation Sheet : :. World Wide We) and 3ersonal Computers &EARNING E6PERIENCES7ACTI/ITIES &e rnin% A"ti-ities 45 Re #2 %nformation sheet :.> in this module. S)e"i $ Instru"tions (ou can ask the assistance of your trainer to show you and e/plain further the topic you can-t understand.

45 Re #2 %nformation sheet :.8 in this module.

(ou can ask the assistance of your trainer to show you and e/plain further the topic you can-t understand.

95 Answer se$f:"he". 95;

Check your answer )y using the answer key.

IN1ORMATION SHEET 9
954 Wh t is "om)uter networ.sC

A computer network is an interconnection of a group of computers. Networks may be classified by w at is called t e network layer at w ic t ey operate according to basic reference models considered as standards in t e industry suc as t e four!layer model is internet protocol suite. " ile t e se#en!layer reference model is better known as $pen %ystems &nterconnection '$%&( constitutes t e ma)ority of networks use t e &nternet *rotocol %uite '&*( as t eir network model.

3.2 M !nt !n!n"

Computer Network

No matter ow you c oose 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. Establis ing a network backup system t at keeps safe copies of all of your digital data is also recommended.

3.3 Network!n" w!t# Con$umer E%ectron!c$
-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 t e &nternet to increase t eir usefulness.

3.& Impro'!n" Network Per(orm nce
$n t e &nternet+ so!called speed tests measure t e bandwidt of an &nternet connection. .ou can often employ #arious tweaks to your computer and network setup to increase &nternet performance. $t er tools and tec ni/ues e,ist to impro#e performance of local and wide area networks and applications.

3.) *$!n" Internet So(tw re App%!c t!on$
Basic network software applications include Web browsers+ email clients and instant messaging clients. " ile t ese are all popular on t e &nternet+ pri#ate organi0ations also support t em internally on t eir intranets. 1ore ad#anced &nternet 2 intranet applications include FTP and VoIP. Being able to install+ configure and run t ese software applications greatly increases a network3s usefulness.
• •

1icrosoft &nternet E,plorer &nstant 1essaging %ystems

• • •

F4* File 4ransfer 5o&* '5oice o#er &*( %ystems Fo&* 'Fa, o#er &*(

3.+ *$!n" P2P Network$
*6* '*eer to *eer( &nternet file s aring systems use distributed network tec ni/ues and speciali0ed protocols to support large!scale online file searc ing+ s aring and messaging. %ome *6* file s aring systems a#e been ea#ily critici0ed for enabling t e s aring of copyrig t material suc as commercial music and #ideo files. *opular *6* file s aring applications include Bit4orrent and 7ime"ire.

3., *$!n" -!rtu % Pr!' te Network$ .-PN/ n0 Remote Acce$$


A Virtual Private Network (VPN) supports local or long!distance protected access to network resources by tunneling t roug s ared public links. " ile 5*Ns offer one type of remote access solution+ ot er remote access

3.1 *$!n" Internet Pro23 Ser'er$
*ro,y ser#ers are &nternet gateways t at pro#ide network firewall+ connection s aring+ and cac ing tec nology for computers on a pri#ate network. *ublic "eb pro,y ser#ers are also a#ailable on t e &nternet as a means to enable anonymous online surfing.

3.4 *$!n" Stor "e Network$
%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 tec nology e,ist ! %AN '%torage Area Network( and NA% 'Network Attac ed %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.

Se$f Che". 9
Instru"tions7 .nswer the following as indicated. 4se answer sheet to )e pro ided )y your trainer. A5 In Your Own Wor#! Wh t is Com)uter Networ.C <5 Wh t re the ED m)$e of P8P Networ.C C5 Wh t is ProD+ Ser-ersC D5 Wh t is S)ee#testC When n# Where it UseC E5 Define the 1o$$owin%2

8' <S% 9' %3S :' *T3 ;' Ao%3 C' 393 ?' A3N D' $TT3 E' S.N F' N.S 8>' *o%3

15 Gi-e the N me of the Com)uter Com)onents <e$on% in this Networ. Di %r m

5/

2/

3/

&/

UNIT O1 COMPETENCY MODU&E TIT&E &EARNING OUTCOME 39

2 2 2

M int in Com)uter S+stem n# Networ.s M int inin% Com)uter S+stem n# Networ.s

M int inin% Com)uter Networ.s

Answer Sheet 9 '&e rnin% A"ti-it+ 9( NAME2 BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB A5 EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE 4( EEEEEEEEEEEEEEEEEEEEEEEEEEEEEE 8( EEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

<5 "5

D5

E5

8' <S% N 9' %3S N :' *T3 N ;' Ao%3 N C' 393 N ?' A3N N D' $TT3 N E' S.N N F' N.S N 8>' *o%3 N
15 Gi-e the N me of the Com)uter Com)onents <e$on% in this Networ. Di %r m

8' 9' :' ;'

Mo#e$ Answers 4
Check your answers with the model answers )elow 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
4( <itTorrent 8( &imewire ProD+ Ser-ers re Internet % tew +s th t )ro-i#e networ. firew $$! sh rin% n# " "hin% te"hno$o%+ for Com)uter o-er Pri- te Networ. Speed tests measure the )andwidth of an %nternet connection that you can if you ha e an

<5

C5 D5

internet access to make that your current speed can satisfy your )rowsing and surfing access through We) Browsers. E5 8' <S% N <pen System %nterconnection 9' %3S N %nternet 3rotocol Suite :' *T3 N *ile Transfer 3rotocol ;' Ao%3 N Aoice < er %nternet 3rotocol C' 393 N 3eer to 3eer Networking ?' A3N N Airtual 3ri ate Networking D' $TT3 N $yper Te/t Transfer 3rotocol E' S.N N Storage .rea Network F' N.S N Network .ttached Storage 8>' *o%3 N *a/ < er %nternet 3rotocol
E5 Gi-e the N me of the Com)uter Com)onents <e$on% in this Networ. Di %r m

8' Network 3rinter 9' Network Ser er :' 3ersonal Computer &Tower Type' ;' 3ersonal Computer &Gesktop Type'

PER1ORMANCE TEST LearnerIs Name Competency7 Maintain Computer Networks Gate Test .ttempt 8st 9nd :rd

G%2=CT%<NS7 Le el C.LL %NST24CT<2, ask .chie ed instructor to assess your performance in the following critical task and performance criteria )elow. (ou will )e rated )ased on the o erall e aluation on the right side.

<A=2.LL =A.L4.T%<N 3=2*<2M.NC= L=A=LS

;. Can perform this skill without super ision and initiati e and adapta)ility to pro)lem situations. :. Can perform this skill satisfactorily without assistance or super ision. 9. Can perform this skill satisfactorily )ut re#uires assistance and5or super ision. 8. Can perform parts of this skill satisfactorily, )ut re#uires considera)le assistance and5or super ision. %nstructor will initial le el achie ed.

PER1ORMANCE STANDARDS YES NO N7A 1or ""e)t ,$e "hie-ement! $$ items shou$# re"ei-e >Yes? or >N7A? res)onse5 • Components of the Computer $ardware and Software are properly identified. • • •    Tools and work area were set up accordingly. 3ersonal 3rotecti e =#uipment is present in area <ccupational $ealth and Safety is practiced correctly .re the Computer Network set+up properly .re the Computers Configure properly trough Network Computer Networking 3rinciple is applied properly

3repared )y7 Romme$ P torito

0u $ifi" tion Mo#u$e Tit$e &e rnin% Out"ome 3@ Assessment Criteri

2 2 2

Com)uter H r#w re Ser-i"in% NC II M int inin% Com)uter S+stem n# Networ. Ins)e"t n# test "onfi%ure#7re) ire# "om)uter s+stem n# networ.s

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, Mc,raw+$ill %nternational =dition. Copyright 9>>?, pp :>9+ :;8 C. %nformation Sheet ; ?. World Wide We) and 3ersonal Computers &EARNING E6PERIENCES7ACTI/ITIES &e rnin% A"ti-ities 45 Re #2 %nformation sheet ;.> in this module. S)e"i $ Instru"tions (ou can ask the assistance of your trainer to show you and e/plain further the topic you can-t understand.

95 Answer se$f:"he". @5;

Check your answer )y using the answer key.

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


%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 sa e electricity. Gaily power up and down makes the components e/posed to high and low temperature cycles that are not good for the life+time of the components, particularly the critical ones such as hard dri es, C34, and memory. The temperature cycle would result in e/pansion+shrinking cycle for the components. The life+time of electronic components would )e increased if they are 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 se ere damage to hard dri es. . tape )ackup and a lock to make systems hard to mo e are worthy in estment for critical data. 4se your hand to touch and feel the co er of your computer at least once a week. The co er should )e at room temperature. %f it feels warm there may )e a pro)lemM Check to make sure that the cooling fans on the power supply and C34 are working properly. Clean the air pathway on the )ack of the power supply on a regular )asis. To sa e 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 and efficient. Myself,% ha e 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 operating system you install on your machine. When you get your new computer home and you configure an internet connection,the first thing % recommend that you do is to get to the windows update site. The site will automatically update your new operating system with files to pre ent people on other computers from accessing your data. Ne/t step is to install an anti+ irus and spyware program on your computer. Before you do anything, make sure the computer is unplugged from the outlet and is completely turned offM Ne/t is to get a screwdri er for those little round screws you will need to undo to get inside your case. When )oth sides of the case are remo ed,you will need a can of compressed air..you can )uy this from any computer store. (ou then spray all the areas inside the case..you will see the dust and dirt flyng off from the places you sprayed. Going this ; times a year&e ery : months'%s a great way to sa e a lot of money and keep your computer running like its )rand new.

• • •






Trou,$eshootin% Te"hniFue for Networ.in% M inten n"e
45 If +ou " nGt "onne"t to ser-er or if Win#ows re)orts n error fter +ou #ou,$e:"$i". Networ. Nei%h,orhoo#! tr+ the fo$$owin% first2 • Make sure youIre using the dri ers that are on the dri ers disk that ships with the network interface card &N%C'. • Make sure the dri er is loaded and the protocols are )ound. Check the Ge ice 3roperties list for trou)le indicators &an O@O or OMO sym)ol'. • Test the N%C adapter with the diagnostic utilities that often came with the dri er installation. • Check with your L.N administrator + you may need to install additional networking software. 85 If the )ro,$em )ersists! fo$$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;C connections &adapter and hu)'. The ma/imum allowa)le distance from adapter to hu) is 8>> meters. %f the ca)le is attached and the distance is within accepta)le limits )ut the pro)lem persists, try a different ca)le. %f youIre directly connecting two computers without a hu) or switch, use a crosso er 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 dri er 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=G description for :C<M 8>58>>BT dual speed N%C. 3lease consult your N%C manual for any difference.

LED

De$cr!pt!on

6% $#!n"

Ste 03 .On/

O((

18 7N9 Green: 7ink integrity ;e#ersed polarity Good 18B4 connection No connection between N&- < ub 188 7N9 Green: 7ink integrity ;e#ersed polarity Good 188B4 connection No connection between N&- < ub A-4 .ellow: *ort traffic for eit er speed Network traffic present Hea#y network traffic No traffic 95 The "om)uter h n%s when the #ri-ers re $o #e#5 • Change the 3C% B%<S interrupt settings. See your N%C and system manuals for more details. • %f you are using =MM:E?, it must )e ersion ;.;F or newer. @5 Di %nosti"s ) ss! ,ut the "onne"tion f i$s or errors o""ur5 • .t 8>>BT, use Category C wiring and make sure that the network ca)le is securely attached. • .t 8>>BT, connect to a 8>>BT hu)5switch &not 8>>Base+T;'. • *or NetWare, make sure you specify the correct frame type in your N=T.C*, file. • Make sure the duple/ mode setting on the adapter matches the setting on the switch. A5 The &NK &ED #oesnGt $i%ht5 • Make sure youI e loaded the network dri ers. • Check all connections at the adapter and the hu)5switch. • Try another port on the hu)5switch. • Make sure the duple/ mode setting on the adapter matches the setting on the hu)5switch. • Make sure you ha e the correct type of ca)le )etween the adapter and the hu). 8>>Base+T@ re#uires two pairs. Some hu)s re#uire a crosso er ca)le while others re#uire a straight+through ca)le. B5 The ACT &ED #oesnGt $i%ht5 • Make sure youI e loaded the correct network dri ers. • The network may )e idle. Try accessing a ser er. • The adapter isnIt transmitting or recei ing data. Try another adapter. • Make sure youIre using two+pair ca)le for T@ wiring. H5 The # )ter sto))e# wor.in% without )) rent " use5 • 2un the diagnostics program that came with the N%C. • Try reseating the N%C in its slot, or try a different slot if necessary. • The network dri er files may )e corrupt or missing. 2emo e the dri ers and then reinstall them. I5 The W .e on &AN 'WO&( fe ture is not wor.in%5 • Make sure the W<L ca)le is attached and that power is )eing applied to the computer. • Check the B%<S for its W<L setting. Some computers may need to )e configured for W<L. • Make sure the network ca)le is fully attached to the adapter. =. Crosso-er " ,$e trou,$eshootin% ti)s5 When you work with network ca)ling, concentrators &hu)s or switch', and N%Cs from different enders, it is possi)le to connect e erything and still ha e no communication )etween file ser ers and workstations. When there are se eral unknown aria)les, it is difficult to determine which component is )roken. 4se these tips to isolate the pro)lem. • Determine whether +our eFui)ment "om)$ies with the 4;< se:T or 4;;< se:T6 st n# r# . This is particularly important for hu)s and switches. • Conne"t str i%ht:throu%h " ,$e from the PC to the hu, . The hu) performs an internal crosso er so that the signal can go from TGQ to 2GQ and TG+ to 2G+ &see $ow to Make Network Ca)les'. When you look at an 2P+;C connector from the front, pin 8 is identified on the left+hand side when the metal contacts are facing up. • M .e sure th t the TDJ n# TD: wires re twiste# to%ether ! n# th t the RDJ n# RD: wires re twiste# to%ether5 4sing wires from opposing pairs can cause signals to )e lost. *or a 8>>Base+T@ ca)le, pins R8 and R9 , and R: and R? must )e on the same twisted strand. 8>. When there is #ou,t whether hu, is )erformin% "orre"t$+! or if the im)e# n"e settin%s re in Fuestion! "rosso-er " ,$e " n he$) +ou iso$ te the f i$in% "om)onent2 • Connect a file ser er and a client 3C )ack to )ack with a crosso er ca)le to erify that the N%C and network operating system are properly configured. • To make a crosso er ca)le, simple connect TGQ to 2GQ and TG+ to 2G+. The ca)le performs the crosso er that is usually performed )y the hu). Make sure that two twisted+pair wires are used. %f the file ser er and client 3C function together as a small network, then either the e/isting ca)ling or the hu) is the pro)lem. • %f there is a proper crosso er, the appropriate L=G comes on. %f there is a straight+through connection, the L=G does not light. . )linking L=G indicates that there is a polarity mismatch &that is, TGQ to 2G+ instead of TGQ to 2GQ'.

0u $ifi" tion Mo#u$e Tit$e &e rnin% Out"ome 3@

2 2 2

Com)uter H r#w re Ser-i"in% NC II M int inin% Com)uter S+stem n# Networ. Ins)e"t n# test "onfi%ure#7re) ire# "om)uter s+stem n# networ.s

Se$f Che". 9
Instru"tions7 .nswer the following as indicated. 4se answer sheet to )e pro ided )y your trainer.

A5 <5 C5 D5

Wh t is the first to #o when Re) irin% n# m int inin% "om)uters s+stem n# networ.s5 In C$e nin% Com)uter s+stem wh t is "orre"t time inter- $ or s"he#u$e th t +ou " n #o in or#er m int in +our Com)uterC Wh t is the #- nt %e of UPSC Wh+ Su##en )ower #own ffe"t or " n " use +our "om)uter to fun"tion im)ro)er$+ or m $fun"tions5

0u $ifi" tion Mo#u$e Tit$e &e rnin% Out"ome 3@

2 2 2

Com)uter H r#w re Ser-i"in% NC II M int inin% Com)uter S+stem n# Networ. Ins)e"t n# test "onfi%ure#7re) ire# "om)uter s+stem n# networ.s

Answer Sheet @ '&e rnin% A"ti-it+ @( NAME2 BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

A5

EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

<5

EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

C5

EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

D5

EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

0u $ifi" tion Mo#u$e Tit$e &e rnin% Out"ome 3@

2 2 2

Com)uter H r#w re Ser-i"in% NC II M int inin% Com)uter S+stem n# Networ. Ins)e"t n# test "onfi%ure#7re) ire# "om)uter s+stem n# networ.s

Mo#e$ Answers 4
Check your answers with the model answers )elow Answer Sheet @ '&e rnin% A"ti-it+ @(
NAME2 BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

A5

Before you do anything, make sure the computer is unplugged from the outlet and is completely turned offM 4se 33= or 3ersonal 3rotecti e =#uipment, .pply the <ccupational $ealth and Safety 3recautions.

<5

Going this ; times a year&e ery : months'%s a great way to sa e a lot of money and keep your computer running like its )rand new. $a e a maintenance schedule.

C5

43S or 4ninterrupti)le 3ower Supply ha e a capacity to sa e power e en in the e ent of )rown+out so that you the opportunity to sa e and safely turn+on your computer in a proper way Sudden lost of power or what we called power interruption can cause 3C malfunction and other power e#uipment failure )ecause they are compose of de ices that electronically made and they dependent to each some de ices need power to terminate himself in safety mo e like for e/ample the disk dri e where they are ha e head that when in time of power loss it can strike the disk that can cause disk head crash.

D5

PER1ORMANCE TEST LearnerIs Name Gate Competency7 &nspect and test configured2repaired Test .ttempt computer system and networks 8st 9nd G%2=CT%<NS7 Le el C.LL %NST24CT<2, ask .chie ed instructor to assess your performance in the following critical task and performance criteria )elow. (ou will )e rated )ased on the o erall e aluation on the right side. <A=2.LL =A.L4.T%<N 3=2*<2M.NC= L=A=LS

:rd

;. Can perform this skill without super ision and initiati e and adapta)ility to pro)lem situations. :. Can perform this skill satisfactorily without assistance or super ision. 9. Can perform this skill satisfactorily )ut re#uires assistance and5or super ision. 8. Can perform parts of this skill satisfactorily, )ut re#uires considera)le assistance and5or super ision. %nstructor will initial le el achie ed.

PER1ORMANCE STANDARDS YES NO N7A 1or ""e)t ,$e "hie-ement! $$ items shou$# re"ei-e >Yes? or >N7A? res)onse5 • Components of the Computer $ardware and Software are properly identified. • • •     Tools and work area were set up accordingly. 3ersonal 3rotecti e =#uipment is present in area <ccupational $ealth and Safety is practiced correctly .re the Computer Network set+up properly .re the Computers Configure properly trough Network Computer Networking 3rinciple is applied properly .re all safety tips and help+full tips are applied

3repared )y7 Romme$ P torito

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