CD Ict Worksheet La3 Form 4jjjj

8/12/2019 CD Ict Worksheet La3 Form 4jjjj

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LESSON 67Introduction to Computer Networks

and Communications

1. The actual connecting medium that carries the message between your sendingcomputer devices and receiving computer devices.

Answer:

2. Computers and peripheral devices that are connected together in order to exchangeinformation (e.g. email chat and web site! and share resources (e.g. printers!.

Answer:

". This device converts digital signals into analog and bac# again into digital signals forinformation to move across the telephone line.

Answer:

$. A set of defined rules of communications for exchange of information to be possibleamong computing devices in a networ#.

Answer:

%. &etwor# communications through the medium of the atmosphere using radio waves.

Answer:

1. 'sing hardware and interconnected computing devices cancommunicate with each other through defined rules of data communications.

2. Communications is about the transfer of information from a acrossa distance to a receiver.

". A computer networ# can be a connection and a wireless connection.

$. Computers communicate with signals.

%. )ther forms of communications technology such as the telephone use signals.

ICT WORKSHEET, FORM 4

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1. *or communications in a networ# tobe possible there must be+. a physical medium

++. a set of spea#ers+++. a set of rules called protocols+,. a system application for managingnetwor# information flowA. + ++ +++-. ++ +++ +,C. + +++ +,. All the above

2. +nformation that is sent across a

networ# can be text voice soundvideo graphics and images or acombination of all these which wecallA. multimedia-. informationC. multitas#ing. communications

". +n a computers canexchange and share information andresources.A. office-. networ#C. restaurant. organi/ation

$. 0hat happens if protocols betweeninterconnected devices are not thesameA. Computers will be able to share

resources-. ata transmission will not beunderstood between devicesC. Communications will not be able toconvert from analog to digital signals. &etwor# communications will use aspecial set of rules to connect devices

%. odem stands forA. otivator3 emotivator

-. odelling3 emodellingC. odulator3 emodulator

. odes3 emonstrations4. The function of the modem is to

A. convert digital signals into text andvice versa-. convert digital signals into soundand vice versaC. convert digital signals into analogand vice versa. convert digital signals into imagesand vice versa

5. +n a networ# information and data

in the form of codes is transmittedthrough a physical medium such aswire cable or even the atmosphereusingA. electricity and water-. electricity radio waves or lightC. radio waves and electromagnetictape. radio waves light waves ormagnetic signals

6. The physical medium over whichdata signals travel canbeA. cables modems or wires-. wires cables or the atmosphereC. cables wires or suitable software. wires the atmosphere or hardware

7. A computer networ# is a system ofinterconnected computers and

peripheral devices. +t mayconnectA. computers satellites and chairs-. computers printers scanners andcamerasC. computers cameras motors andhardware tools. computers scanners x8raye9uipment and log boo#s

1. The following device uses digitalsignals to send data


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A. ;adio-. Television

C. icrowave oven. &oteboo# computer

LESSON 68Components of Communications

1.


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. All the above

1. &etwor# software must be able tohandle networ#ing andconnections within the networ# and withother networ#s.

A. practices-. principles

LESSON 69

Importance of Networks and

Communications

1. obile communications today is basedon networ#ing technology.A. T;'@


NO STATEENT TR!E "ALSE

# 0ith e8ban#ing most of the transactions can be done at home

or from the office only during ban#ing hours.

$ +n e8learning students at any location around the world canparticipate in an online classroom download tutorial 9uestionsand submit their assignments.

% &etwor#s do not provide a very rapid method for sharing andtransferring files.

& -esides monetary savings sharing a program on a networ#allows easier upgrading of the program.

' ?eople at various places in a networ# can communicate andwor# together.

6 +nternet connection is not needed before an online educationcan ta#e place.

4

C. proposals. protocols

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-. *A


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1. A& is an acronym of imited Area&etwor#A. T;'@- *A


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1. A lecturer in ?enang exchanges fileswith a student in Buala umpur using A&.A. T;'@-. *A


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1. 0e can communicate with our friendsoutside the country using the +nternet.A. T;'@-. *A


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LESSON 7&.ifferences /etween T)pes of Network


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-. *A


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C*ient1Ser2er

1. A is also sometimes called a host computer.

2. A is one or more computers that act as a server and the othercomputers on the networ# re9uest services from the server.

". There are other computers and mobile devices on the networ# that rely on the server forits resources which we call

$. Ais used to store and manage files.

%. A is used to manage networ# traffic.

4. A is used to store and provide access to a database.

5. A is to manage printers and print Eobs.

6. A company owns a server and more than %client computers. The most suitable networ#architecture for this company is the networ#.

7. Ais used to control access to the hardware software and otherresources on the networ#.

1. +n ban#s account information is stored in the ban#>s A customer canaccess his account via +nternet ban#ing.

LESSON 77


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3eer4To43eer

1. +n a client3server networ# a computer may have a differentdepending on itsfunctions.

2. +n a peer8to8peer networ# all computers haveabilities.

". ore costs will have to be spent on a client3server networ# than a peer8to8peer networ#.

$. Client3server networ# is used in both small and networ#s.

%. ?eer8to8peer is normally used in networ#s with less than ten computers.

4. Client3server networ# is easier to manage than peer8to8peer networ# in terms of and data accuracy.

5. *iles need to be shared in the of a client3server networ# while shared fileswill need to be stored in individual ?Cs of a peer8to8peer networ#.

6. )ne computer is needed as the server in a client3server networ# while peer8to8peer networ# needs no server.

1. Bamal has two computers. =e wants to builda simple networ# architecture in his house. Thebest networ# architecture is a client3servernetwor#.

True *alse

2. A computer in peer8to8peer networ# canshare a printer with other computers.

True *alse

".


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Network Topo*o5)

LESSON 79


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Network Topo*o5)

1. A bus refers to the main physicalpathway or central cable where all otherdevices are connected to it.A. T;'@-. *A


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LESSON 8(Rin5 Topo*o5)

1. A ring topology consists of a singlecentral cable to which all computers andother devices connect.A. T;'@-. *A


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LESSON 8$

.ifferences of Network Topo*o5)

1. @ach topology influences the capabilities of the hardware in order to manage the flow ofinformation.

True *alse

2. ;ing topology has no limit to install as many numbers of nodes when extending anetwor#.

True *alse

".


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True *alse

LESSON 8%Introduction to Network Standards

1. The well8#nown standards adopted by the +nstitute of @lectrical and @lectronic @ngineers

(+@@@! are the

2. The uses the 2.$=/ fre9uency band to transmit data up to 2bps.

". is the standard specifications for a -roadband A&.

$.


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1. 62.6 standard provides specifications for the design installation and testing needed forbroadband transmissions. True*alse

LESSON 8&3rotoco*s

1. provide the rules for how computers communicate.

2. is responsible for providing logical addressing called +?address to route information between networ#s.

". is used to access send and receive =ypertext ar#upanguage (=T! files on the +nternet.

$. is responsible for allowing files to be copied betweendevices.

%. ensures the delivery of information pac#ets acrossnetwor#s.

1. &etwor# standards are specifications set by organisations such as the +@@@ to define hownetwor#ing devices communicate and access networ# media.

True*alse

2. *ile Transfer ?rotocol (*T?! is used for transferring e8mail between computers.True

*alse

". -efore protocols were developed intercommunication between devices was possible.True

*alse

$. ?rotocols are important as they define how devices applications or computers communicate on anetwor#.

True*alse

%. A protocol stac# or a protocol suite wor#s together as a group at different levels or layers. +t

prepares and processes data for an exchange of information over a networ#. True*alse

4. +nternet ?ac#et @xchange (+?I! is one of the three main protocol suites that are used in internetwor#s.

True*alse

5. =ypertext Transfer ?rotocol (=TT?! is responsible for allowing files to be copied between devices.True

*alse

6. )n a networ# between two computers only one protocol will be at wor# defining the processes ofcommunication between the two computers during a single exchange of data or information.


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4. +? ta#es care of delivering data pac#ets between two

5. TC?3+? is the internet communication

6. +? stands for

7. TC?3+? is a that sets the rules computers must follow incommunicating with each other on a networ#.

1. TC? establishes connection between two computers protects against data loss and corruption.

LESSON 86

T0e -a) TC3 and I3 -ork

1. @ach computer must have an assigned by the networ# administrator toaccess the +nternet.

2. 0hen you access a for example the Jahoo main page the TC?3+? will ma#e thecommunications wor# between your computer and the Jahoo>s server.

". Jou have typed the Gwww.yahoo.comH on the browser. Jour TC? will send a re9uestfor the web page to Jahoo>s server according to the address you typed in.

$. TC? will ma#e the between two computers (yours and Jahoo server! and it willprepare the full8duplex communication.


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%. The +? will begin sending the from 172.146..1 to www.yahoo.com (or27.1"1."4.1%6!.

4. +nternet is a huge collection of . There are many routes from your computer tothe server.

5. +? will send the through these routes as fast as possible.

6. +? will constantly use several different to deliver pac#ets to their destination.

7. TC? will continue to maintain the lin# between two

1. TC? will close the lin#s once the web page has reached your computer.

LESSON 87

3ri2ate Computer Network Settin5

1. 0hen you want to install a private networ# you will need to install the +?

address subnet mas# and default gateway.

2. ;ight clic# on the y &etwor# ?laces on the des#top and clic# thecommand.

". +n the &etwor# Connections window right clic# on theinterface and clic# the?roperties command.

$. +n the networ# interface>s properties dialog box clic# theentry and then clic# theproperties button.

%. +n the +nternet protocol ?roperties dialog box select the use thefollowingoption.

4. Type in the in the +? address text box.

5. Type in the subnet in the subnet mas# text box.

6. @nter a with you server>s +? Address.

7. a#e sure the obtain server addresses automatically option is chosen.

1. Clic# )B in the ?rotocol ?roperties dialog box.

1. 0hen you want to install a private networ# you will need to install only the networ# card.True*alse

2. ;ight clic# on the y &etwor# ?laces on the des#top and clic# the ?roperties command.True

*alse

". +n the y &etwor# ?laces window right clic# on the networ# interface and clic# the ?ropertiescommand.

True*alse

$. +n the networ# interface>s properties dialog box clic# the +nternet ?rotocol entry and then clic# theproperties button.


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True*alse

%. +n the +nternet ?rotocol ?roperties dialog box select the 'se the following +? address option.True

*alse

4. Type in the subnet mas# in the +? address text box.True

*alse

5. Type in the +? address in the subnet mas# text box.True

*alse6. @nter a default gateway with you server>s +? Address.

True*alse

7. a#e sure the obtain &< server addresses automatically option is chosen.True*alse

1. Clic# )B in the +nternet ?rotocol ?roperties and the external interface>s properties dialog box.True*alse

LESSON 88

T)pes of Network Communication Tec0no*o5)

1. An can be viewed as part of a companyKs +ntranet that is extended to users outside

the company.

Answer:

2. +t has a 0eb server supports multimedia 0eb pages coded in =T and is accessible via a 0ebbrowser such as icrosoft +nternet @xplorer or &etscape &avigator.

Answer:

". +t consists of millions of smaller business academic domestic and government networ#s whichtogether carry various information and services such as electronic mail online chat. +t also carriesinterlin#ed 0eb pages and other documents of the 0orld 0ide 0eb.

Answer:

$. ?ac#age shipping companies for example allows customers to access their networ# to print airbills schedule pic#ups and even trac# shipped pac#ages as the pac#ages travel to their destinations.

Answer:

%. Through the society has access to global information and instant communications

Answer:

4.


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5. +t has a 0eb server supports multimedia 0eb pages coded in =T and is accessible via a 0ebbrowser such as icrosoft +nternet @xplorer or &etscape &avigator.

Answer:

1. +n intranet and other +nternet protocols are commonly used as well especially*T? and email.

2. The same concepts and technologies of the +nternet such as clients and servers running on the+nternet protocol suite are used to build an

".


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1. +nternet is a global networ# connectingmillions of computers.A. T;'@-. *A


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1. +ntranet is an internal networ# within theorganisation.

True *alse

2. +ntranet can be accessed by othercomputers outside an organisation with the useof login names and passwords.

True *alse

". +ntranet has its own firewall to protect fromintruders outside an organisation fromaccessing the company information or data.

True *alse

$. +ntranet can be accessed without the use ofuser + or login name and password..

True *alse

%. +ntranet can connect two branches of anorganisation even though they are located attwo different places.

True *alse

4. The +nternet connects networ#s worldwidewhile intranet wor#s within a particularorganisation.

True *alse

5. +ntranets include services li#e emailcompany information employee handboo#company events and calendars as well as Eobpostings.

True *alse

6. +ntranets do not support groupwareapplications.

True *alse

7. +f Ali is in Fa#arta on a business trip he canstill access company information by goingthrough his company>s website entering hisuser + or login name and password.

True *alse

1. 0ith intranet meetings and discussionscan be carried out without having to physicallymeet at a meeting room.

True *alse

LESSON 9#Etranet


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1. )nly or authorised users can navigate or access an extranet.

2. Through extranet users can share product exclusively with wholesalers or those Linthe tradeH.

". &ews of interest can be shared privately with partner companies using extranet.

$. with other companies on Eoint development efforts can be done via extranet.

%. can access the +nternet while extranet is only limited to defined sets of customerssuppliers or partners.

4. @xtranet is within a firewall while the might be with or without a firewall.

5. in the +nternet often create problems such as hac#ers and viruses to users whileextranet is more secured as only authorised users can access their system.

LESSON 9$Communication .e2ices

ardware Reuirements1. An adapter card or ?C card that enables the computer to access the networ#.

Answer:

2. A central communication device that allows computers and devices to transfer data wirelesslybetween wireless devices or to transfer data wirelessly to a wired networ#.

Answer:

". A communication device that connects multiple computers or other routers together and transmits

data to the correct destinations.

Answer:

$. A communication device that only wor#s in stand alone computers. +t is built into the computer toconnect to the +nternet.

Answer:

%. A common connection point for devices in a networ# commonly used to connect segments of aA&.

Answer:

4. A communication device that is separate from the computer and is also mobile. +t is used toconnect to the +nternet.

Answer:

5. A networ# card that provides wireless data transmission.

Answer:

1. An adapter card or ?C card that enables the

computer to access the networ#.A. odem

-. 0ireless Access ?oint

C. &etwor# +nterface Card. 0ireless &etwor# +nterface Card


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2. A central communications device that allowcomputers and devices to transfer datawirelessly between wireless devices or totransfer data wirelessly to a wired networ#.A. ;outer-. =ub3


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%. The wireless access point usually connects to a networ# and can relay databetween wireless devices and wired devices.

4.


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. Connecting ?C to printer using parallel port.

11. 0hich of the following is an example ofphysical transmission mediumA. Air-. ,acuumC. Antenna. Twisted8pair

12. +n physical transmission medium wavesare along a solid transmission medium whereasin wireless transmission medium waves areandthe transmission and receptions are by meansof antennas.A. guided unguided-. unguided guided

C. transmitted guided. propagated directed

1". 0hich of the following is an example ofphysical transmission mediumA. Air-. =otspotC. Antenna. *ibre optic

LESSON 9'30)sica* Transmission edia

1. A twisted8pair cable without a metallicshield.A. 'T?-.


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1%. cable is a networ#ing medium thatuses light for data transmission.A. Coaxial-. *ibre opticC.


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11. +nfrared signals have fre9uenciesand cannot penetrate walls.A. low-. highC. medium. moderate

12. is a method of communication thatuses electromagnetic waves to transmit data

between devices without using a physicalconductor.A.


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2. was one of the most popular inux distributions assembledby ;ed =at.

". is graphical and business8oriented operating system that wasdesigned to wor# with either uniprocessor or symmetric multi8processor (


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1. 0eb browsers available for personal computers include


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-. a &etwor# +nterface CardC. a personal computer. an available &+C slot

5. -efore installing an &+C please chec#whetherA. you have a ?C+ slot-. you have an +


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LESSON #(#

Crimpin5 Strai50t Ca/*e

1. cable has four twisted pairs of wire for a total of eightindividually insulated wires.

2. is used to cut and strip cables.

". A straight cable acts as an enabling a device with a networ# interfacecardto be attached to a networ#.

$. The total length of wire segments between a ?C and a hub or between two ?Cscannot exceed .

%. A common form of networ# media is the #nown as 'nshieldedTwisted?air Category % cable.

4. are used to cut the cable off at the reel and to fine tune the cableends during assembly.


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LESSON #($

Crimpin5 Crosso2er Ca/*e



# A wrench is used to cut and strip cable.

$ The total length of wire segments between a ?C and a hub orbetween two ?Cs can exceed more than 1 meters.

% +f the cable crimping process is done properly an averageperson will not be able to pull the plug off the cable with his orher bare hands.

& +n the cable crimping process you have to strip one end of thecable with the pen8#nife.

' +n trimming cable wires it is very important that the unstrippedor untwisted end be slightly less than half8inch long.

6 Cable strippers are used to cut the cable off at the reel and to finetune the cable ends during assembly.

7 +n ;F8$% modular plug ;F means L;egistered Fac#L.

8 A common form of networ# media is the 'T? Cat % #nown as'nshielded Twisted8?air Category % cable.

9 +n arranging the wires of the networ# cable it is not necessary tospread and arrange the pairs in order.

#( A straight cable acts as an extension enabling a device &etwor#+nterface Card to be attached to a networ#.


# Category % cable can have more than half of an inch (1."cm! at the end.

$ Jou need a pair of scissors that will allow you to cut a groupofcables in a straight line.

% The tools for cable crimping are such as cables plierscrimpers and scissors.

& 0hen you crimp the cable be sure it is properly rated for

CAT %.

' To ma#e the cable start by stripping off about two inches (%cm! of the plastic Eac#et off the end of the cable.

6 -F8$% plug is used as a connector to CAT % cable incrossovercable crimping.

7 The crossover cable cannot be used to directly connect two

computers to each other without the use of a hub or switch.

8 +n a cable crimping test you should see that the copperconnectors at the end of the ;F8$% plug should not bepressed down into the wires.

9 0hen you begin to crimp the cable be sure to #eep a goodgrip on that ;F8$% plug and the cable.

#( Toward the bac# of the ;F8$% plug (where the Eac#et meets

the ;F8$% plug! it should be crimped securely holding theEac#et or cable in the ;F8$% plug.

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LESSON #(%Confi5uration of Network


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LESSON #(&

Testin5 of Network

1. To use ping open the window.

2. +f the problem persists you have to chec# your networ# or

protocol.

". +n this lesson students will be taught on the processes of networ#

$. The best utility to have a 9uic# TC?3+? connection test is

%. The ping utility then send and receive of information.

4. +f ping displays error messages such as -ad +? Address ;e9uest Timed )ut or

'n#nown =ost or could not send and receive pac#ets over the youshould verify if the +? address is valid.

5. There are steps for testing networ#.

6. )nce you have installed the cables and software you cantest the new TC?3+? protocol.

7. +f you have successfully sent and received pac#ets all is well with the connection.

1. @nter the name or you want to test after the ping command.


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LESSON #('

S0ared "o*der

1. A is a named collection of related files that can be retrieved moved and

otherwise manipulated as one entity.

2. *olders can be created folders.

". The files in a folder can be copied or moved to other computers and even to the+nternet.

$. +f the file or folder you want to share is not located in y ocuments or one of its subfolders useto find it.

%. +n 0indows acintosh and other operating systems a folder is a named collection of related filesthat can be retrieved moved and as one entity.

4. Jou can share the files and folders stored on your computer and on your


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5. To change the name of your folder on the networ# in the text box type a newname for your folder.

6. The you choose depends on whom you want to share the files or folders with andthe computer used to access them.

7. Anyone who has user access to the networ# can read copy or change files stored in that folderwhen you a drive or folder.

1. *olders can contain many different types of such as documents musicpictures videos and programs.

LESSON #(6-ire*ess and o/i*e

1. A wireless digital mobile telephone system used in @urope and other parts of the world.

Answer:

2. A pac#et8based wireless communication service that provides continuous connection tothe +nternet for mobile phone and computer users.

Answer:

". A faster version of the lobal


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%. is a set of communication protocols to standardi/e the way wirelessdevices such as cellular telephones and radio transceivers can be used for +nternet access.

4. is the worldKs first Lsmart phone serviceL for 0eb browsing first introduced inFapanD provides colour and video over telephone sets.

5. is the operation of wireless devices or systems in homes and officesand in particular e9uipment connected to the +nternet via specialised modems.

6. is the use of wireless devices or systems aboard motorised movingvehicles.

LESSON #(7o/i*e Computin5

1. The +@@@ 62.11 group of standards specifies the technologies for it.

Answer:

2. +t uses cellular networ# technologies such as ?;< 3 CA2 3


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". are handheld devices that were originally designed as personalorganisers.

$. A is any electronic handheld device that integrates the functionality of amobile phone personal digital assistant or other information appliance.

%. A A& is one in which a noteboo# user can connect to a ocal Area &etwor# througha wireless (radio! connection.

4. The +@@@ group of standards specify the technologies for wireless A&s.

5. A uses cellular networ# technologies such as ?;< 3CA2 3


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LESSON #(9

Internet Ser2ices

1. consists of aworldwide collection of electronicdocuments.A. +;C-. @mailC. 000.


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which can contain text graphics audioand video.A. web page-. newsgroupC. search engine. 0orld 0ide 0eb

7. A user utilises a3an program to createsend receive forwardstore print anddelete electronic messages.A. email-. newsgroup

C. search engine. 0orld 0ide 0eb

1. The entire collection of +nternetnewsgroups is called which contains

tens of thousands of newsgroups abouta multitude of topics.A. 'ser-. 'senetC. 'segroup. 0orld 0ide 0eb

LESSON ##(Internet Ser2ices

1. improves user mobility speed and scalability to move around within a broadcoverage area and still be connected to the networ#.

2. A is a computer networ# used for communication among computer devicesclose to one person li#e ?Cs laptops printers telephones digital ameras mobile phones video game

consoles and personal digital assistants.



# A ?ersonal Area &etwor# (?A&! is a computer networ# used forcommunication among computer devices including ?Cs laptops printerstelephones digital cameras mobile phones video game consoles andpersonal digital assistants.

$ The +@@@ standard for 0ireless A&s 62.1".

% 0iAI would operate similar to 0i*i but at higher speeds over greaterdistances and for a greater number of users.

& ,?& uses tunnelling mechanism to maintain privacy and security of thedata. Tunnelling means transmitting data pac#ets across a publicnetwor#.

' ?ersonal area networ#s may only be wired with '


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". A is a networ# that uses a public telecommunication infrastructure such asthe +nternet from remote offices or individuals with secure access to their organi/ationKs privatenetwor#

$. 0iAI would operate similar to but at higher speeds over greater distancesand for a greater number of users.

%.by companies to provide access from their internal networ# resources to theirhome or mobile wor#ers.

4. ata or information in travels via tunnelling.

5. is generally done by encapsulating the private networ# data and protocolinformation within the public networ# transmission units so that the private networ# protocolinformation appears to the public networ# as data.

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CD Ict Worksheet La3 Form 4jjjj