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Chapter c1
Introduction cto cData cCommunications
True-False cQuestions
The cfollowing care cpossible cTrue/False cquestions cfor ctests. cThe cstatement cis cgiven cand cthe
canswer cis cprovided cin csquare cbrackets. cThe clevel cof cdifficulty c(easy, cmoderate, cdifficult)
cand cthe cpage cnumber(s) crelevant cto cthe ctopic care calso cfurnished.
1. According cto cJohn cChambers, cCEO cof cCisco c(a cleading cnetworking ctechnology
ccompany), cthe cinformation cage cis cthe csecond cIndustrial cRevolution.
Answer:True Difficulty: cEasy Reference: c p. c4
2. Due cto crecent cadvances cin chigh cspeed ccommunication cnetworks, cthe cinformation clag,
cor cthe ctime cit ctakes cfor cinformation cto cbe cdisseminated caround cthe cworld, chas
cbeen csignificantly cshortened.
Answer:True Difficulty: c Easy Reference: c p.4
3. One cperspective cof cdata ccommunications cand cnetworking cas cstated cin cthe ctextbook,
cexamines cthe cmanagement cof cnetworking ctechnologies, cincluding csecurity, cnetwork
cdesign, cand cmanaging cthe cnetwork con ca cday-to-day cbasis cand clong cterm cbasis.
Answer:True Difficulty: c Moderate Reference: c p. c5
4. The cfirst celectronic cdata ccommunication csystem cwas cthe ctelephone cdeveloped cby
cAlexander cGraham cBell.
Answer:False Difficulty: cEasy Reference: c p. c5
5. The cfirst ctranscontinental ctelephone cservice cwas cestablished cin cthe c1940s.
Answer:False Difficulty: cEasy Reference: c p. c6
6. An cInter-Exchange cCarrier c(IXC) cprovides conly clocal ctelephone cservices cto
chomes cand cbusinesses.
Answer: c False Difficulty: c Easy Reference: c p. c6
7. Common ccarriers cinclude cthe cRBOCs, cIXCs, cand cCable cTV ccompanies.
Answer:True Difficulty: cModerate Reference: c p. c7
8. The cTelecommunications cAct cof c1996 cnow cpermits cthe cRBOCs cto cprovide clong
cdistance coutside cthe cregion cin cwhich cthey cprovide clocal ctelephone cservices.
Answer: cTrue Difficulty: cModerate Reference: c p. c7
9. The cInternet cwas cstarted cby cthe cU.S. cDepartment cof cdefense cin c1969 cas ca
cnetwork cof cfour ccomputers ccalled cARPANET.
Answer: cTrue Difficulty: c Moderate Reference: c p. c9
10. Telecommunications cis cthe ctransmission cof cvoice cand cvideo cas cwell cas cdata cand
cimplies ctransmitting ca clonger cdistance cthan cin ca cdata ccommunication cnetwork.
Answer:False Difficulty: cModerate Reference: c p. c11
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11. A clocal carea cnetwork c(LAN) cconnects cother cLANs cand cBNs clocated cin cdifferent careas
cto ceach cother cand cto cwide carea cnetworks cin ca cspan cfrom c3 cto c30 cmiles.
Answer: cFalse Difficulty: cModerate Reference: c p. c13
12. An cintranet cis ca cLAN cthat cuses cInternet ctechnologies cand cis cpublicly cavailable cto
cpeople coutside cof cthe corganization.
Answer: cFalse Difficulty: cModerate Reference: c p. c15
13. A ccar cmanufacturer cmay cgive caccess cto ccertain cportions cof cits cnetwork cto csome cof cits
csuppliers cvia cInternet. cThis cis can cexample cof can cExtranet.
Answer: cTrue Difficulty: cModerate Reference: c p. c15
14. The cOSI cmodel cis cthe cmost cwidely cused cnetwork cmodel cto cdevelop cand cbuild cnetworks
ctoday.
Answer: cTrue Difficulty: cModerate Reference: c p. c16
15. The cnetwork clayer cis cresponsible cfor crouting cmessages cfrom cthe csource ccomputer
cto cthe cdestination ccomputer.
Answer: cTrue Difficulty: cEasy Reference: c p. c17
16. In cthe cOSI cmodel, cthe capplication clayer cis cthe cend cuser’s caccess cto cthe cnetwork.
Answer: cTrue Difficulty: cModerate Reference: c p. c18
17. The capplication clayer cis cthe cseventh clayer cof cthe cInternet cmodel cand cprovides cthe
cend cuser’s caccess cto cthe cnetwork.
Answer: cTrue Difficulty: cModerate Reference: c p. c18
18. At cthe ctransport clayer cin cthe cInternet cmodel, cTCP cis cresponsible cfor cbreaking clarge
cfiles creceived cfrom cthe capplication clayer cinto csmaller cpackets cand copening ca
cconnection cto ca cserver cfor ctransferring cthe cpackets.
Answer: cTrue Difficulty: cDifficult Reference: c p. c17
19. Ethernet cis can cexample cof ca cnetwork clayer cprotocol.
Answer: cFalse Difficulty: cEasy Reference: c p. c17
20. Data ccommunication cstandards cenable ceach clayer cin cthe csending ccomputer cto
ccommunicate cwith cits ccorresponding clayer cin cthe creceiving ccomputer.
Answer: cTrue Difficulty: cEasy Reference: c p. c22
21. The cspecification cstage cof cthe cformal cstandardization cprocess cconsists cof
cdeveloping cnomenclature cand cidentifying cthe cproblems cto cbe caddressed.
Answer: cTrue Difficulty: cModerate Reference: c p. c23
22. ANSI cis ca cvoting cparticipant cin cthe cISO.
Answer: cTrue Difficulty: cEasy Reference: c p. c23
23. Passive coptical cnetworking, ca ckey ctrend cfor cthe cfuture, cmeans cthat cvirtually cany
ccomputer cwill cbe cable cto ccommunicate cwith cany cother ccomputer cin cthe cworld.
Answer: cFalse Difficulty: cModerate Reference: c p. c26
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24. The chigh cbandwidth crequirements c(high ccommunications cneeds) cfor cvideo chave
cslowed cits cintegration cinto ccomputer cnetworks.
Answer: cTrue Difficulty: cModerate Reference: c p. c28
25. An cApplication cService cProvider c(ASP) cdevelops ca cspecific csystem cand ccompanies
cpurchase cor crent cthe cservice cwithout cinstalling cthe csystem con ctheir cown ccomputers.
Answer: cTrue Difficulty: cModerate Reference: c p. c29
MULTIPLE cCHOICE
The cfollowing care cpossible cmultiple-choice cquestions cfor ctests. cThe cquestion cis cposed cand
cthe canswer cis cprovided cunder cthe cchoices. cThe clevel cof cdifficulty c(easy, cmoderate,
cdifficult) cand cthe cpage cnumber(s) crelevant cto cthe ctopic cis calso cfurnished.
1. Data ccommunications cand cnetworking ccan cbe cconsidered cas ca cglobal carea cof cstudy cbecause:
a. new c technologies c and c applications c emerge c from c a c variety c of c countries
c and c spread caround cthe cworld
b. the ctechnologies cenable cglobal ccommunication
c. the cpolitical cand cregulatory cissues care cexactly cthe csame cin cevery ccountry
d. a cand cb
e. none cof cthe cabove
Answer: cD Difficulty: cEasy Reference: c p. c4
2. In c1970, ca ckey cdecision cregarding cMCI:
a. set cup cthe cTelecommunications cCompetition cand cDeregulation cAct
b. permitted cMCI cto cprovide climited clong cdistance cservice cin cthe cU.S.
c. permitted ctelephone cand/or ccomputer cequipment cthat cwas cnot cmanufactured cby
cBell cTelephone cto cbe cconnected cto cAT&T’s cnetwork
d. divided cAT&T cinto ctwo cparts: cone cpart cfor clong cdistance cservice, cand ca
csecond cpart, ccomprised cof cseven coperating ccompanies, cfor clocal ctelephone
cservice
e. set cup cderegulation cfor cinternational ctelecommunications cmarkets cin c68 ccountries
Answer: cB Difficulty: cEasy Reference: c c p. c6
3. In c1984, ca cfederal cjudge cbroke cup ca chighly ccontested ctelephone cservice cmonopoly cand:
a. set cup cthe cTelecommunications cCompetition cand cDeregulation cAct
b. permitted cMCI cto cprovide climited clong cdistance cservice cin cthe cU.S.
c. permitted ctelephone cand/or ccomputer cequipment cthat cwas cnot cmanufactured
cby cBell cTelephone cto cbe cconnected cto cAT&T’s cnetwork
d. divided cAT&T cinto ctwo cparts: cone cpart cfor clong cdistance cservice, cand ca
csecond cpart, ccomprised cof cseven cregional coperating ccompanies, cfor clocal
ctelephone cservice
e. set cup cderegulation cfor cinternational ctelecommunications cmarkets cin c68 ccountries
Answer: cD Difficulty: cEasy Reference: c p. c6
Chapter c1
Introduction cto cData cCommunications
True-False cQuestions
The cfollowing care cpossible cTrue/False cquestions cfor ctests. cThe cstatement cis cgiven cand cthe
canswer cis cprovided cin csquare cbrackets. cThe clevel cof cdifficulty c(easy, cmoderate, cdifficult)
cand cthe cpage cnumber(s) crelevant cto cthe ctopic care calso cfurnished.
1. According cto cJohn cChambers, cCEO cof cCisco c(a cleading cnetworking ctechnology
ccompany), cthe cinformation cage cis cthe csecond cIndustrial cRevolution.
Answer:True Difficulty: cEasy Reference: c p. c4
2. Due cto crecent cadvances cin chigh cspeed ccommunication cnetworks, cthe cinformation clag,
cor cthe ctime cit ctakes cfor cinformation cto cbe cdisseminated caround cthe cworld, chas
cbeen csignificantly cshortened.
Answer:True Difficulty: c Easy Reference: c p.4
3. One cperspective cof cdata ccommunications cand cnetworking cas cstated cin cthe ctextbook,
cexamines cthe cmanagement cof cnetworking ctechnologies, cincluding csecurity, cnetwork
cdesign, cand cmanaging cthe cnetwork con ca cday-to-day cbasis cand clong cterm cbasis.
Answer:True Difficulty: c Moderate Reference: c p. c5
4. The cfirst celectronic cdata ccommunication csystem cwas cthe ctelephone cdeveloped cby
cAlexander cGraham cBell.
Answer:False Difficulty: cEasy Reference: c p. c5
5. The cfirst ctranscontinental ctelephone cservice cwas cestablished cin cthe c1940s.
Answer:False Difficulty: cEasy Reference: c p. c6
6. An cInter-Exchange cCarrier c(IXC) cprovides conly clocal ctelephone cservices cto
chomes cand cbusinesses.
Answer: c False Difficulty: c Easy Reference: c p. c6
7. Common ccarriers cinclude cthe cRBOCs, cIXCs, cand cCable cTV ccompanies.
Answer:True Difficulty: cModerate Reference: c p. c7
8. The cTelecommunications cAct cof c1996 cnow cpermits cthe cRBOCs cto cprovide clong
cdistance coutside cthe cregion cin cwhich cthey cprovide clocal ctelephone cservices.
Answer: cTrue Difficulty: cModerate Reference: c p. c7
9. The cInternet cwas cstarted cby cthe cU.S. cDepartment cof cdefense cin c1969 cas ca
cnetwork cof cfour ccomputers ccalled cARPANET.
Answer: cTrue Difficulty: c Moderate Reference: c p. c9
10. Telecommunications cis cthe ctransmission cof cvoice cand cvideo cas cwell cas cdata cand
cimplies ctransmitting ca clonger cdistance cthan cin ca cdata ccommunication cnetwork.
Answer:False Difficulty: cModerate Reference: c p. c11
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11. A clocal carea cnetwork c(LAN) cconnects cother cLANs cand cBNs clocated cin cdifferent careas
cto ceach cother cand cto cwide carea cnetworks cin ca cspan cfrom c3 cto c30 cmiles.
Answer: cFalse Difficulty: cModerate Reference: c p. c13
12. An cintranet cis ca cLAN cthat cuses cInternet ctechnologies cand cis cpublicly cavailable cto
cpeople coutside cof cthe corganization.
Answer: cFalse Difficulty: cModerate Reference: c p. c15
13. A ccar cmanufacturer cmay cgive caccess cto ccertain cportions cof cits cnetwork cto csome cof cits
csuppliers cvia cInternet. cThis cis can cexample cof can cExtranet.
Answer: cTrue Difficulty: cModerate Reference: c p. c15
14. The cOSI cmodel cis cthe cmost cwidely cused cnetwork cmodel cto cdevelop cand cbuild cnetworks
ctoday.
Answer: cTrue Difficulty: cModerate Reference: c p. c16
15. The cnetwork clayer cis cresponsible cfor crouting cmessages cfrom cthe csource ccomputer
cto cthe cdestination ccomputer.
Answer: cTrue Difficulty: cEasy Reference: c p. c17
16. In cthe cOSI cmodel, cthe capplication clayer cis cthe cend cuser’s caccess cto cthe cnetwork.
Answer: cTrue Difficulty: cModerate Reference: c p. c18
17. The capplication clayer cis cthe cseventh clayer cof cthe cInternet cmodel cand cprovides cthe
cend cuser’s caccess cto cthe cnetwork.
Answer: cTrue Difficulty: cModerate Reference: c p. c18
18. At cthe ctransport clayer cin cthe cInternet cmodel, cTCP cis cresponsible cfor cbreaking clarge
cfiles creceived cfrom cthe capplication clayer cinto csmaller cpackets cand copening ca
cconnection cto ca cserver cfor ctransferring cthe cpackets.
Answer: cTrue Difficulty: cDifficult Reference: c p. c17
19. Ethernet cis can cexample cof ca cnetwork clayer cprotocol.
Answer: cFalse Difficulty: cEasy Reference: c p. c17
20. Data ccommunication cstandards cenable ceach clayer cin cthe csending ccomputer cto
ccommunicate cwith cits ccorresponding clayer cin cthe creceiving ccomputer.
Answer: cTrue Difficulty: cEasy Reference: c p. c22
21. The cspecification cstage cof cthe cformal cstandardization cprocess cconsists cof
cdeveloping cnomenclature cand cidentifying cthe cproblems cto cbe caddressed.
Answer: cTrue Difficulty: cModerate Reference: c p. c23
22. ANSI cis ca cvoting cparticipant cin cthe cISO.
Answer: cTrue Difficulty: cEasy Reference: c p. c23
23. Passive coptical cnetworking, ca ckey ctrend cfor cthe cfuture, cmeans cthat cvirtually cany
ccomputer cwill cbe cable cto ccommunicate cwith cany cother ccomputer cin cthe cworld.
Answer: cFalse Difficulty: cModerate Reference: c p. c26
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24. The chigh cbandwidth crequirements c(high ccommunications cneeds) cfor cvideo chave
cslowed cits cintegration cinto ccomputer cnetworks.
Answer: cTrue Difficulty: cModerate Reference: c p. c28
25. An cApplication cService cProvider c(ASP) cdevelops ca cspecific csystem cand ccompanies
cpurchase cor crent cthe cservice cwithout cinstalling cthe csystem con ctheir cown ccomputers.
Answer: cTrue Difficulty: cModerate Reference: c p. c29
MULTIPLE cCHOICE
The cfollowing care cpossible cmultiple-choice cquestions cfor ctests. cThe cquestion cis cposed cand
cthe canswer cis cprovided cunder cthe cchoices. cThe clevel cof cdifficulty c(easy, cmoderate,
cdifficult) cand cthe cpage cnumber(s) crelevant cto cthe ctopic cis calso cfurnished.
1. Data ccommunications cand cnetworking ccan cbe cconsidered cas ca cglobal carea cof cstudy cbecause:
a. new c technologies c and c applications c emerge c from c a c variety c of c countries
c and c spread caround cthe cworld
b. the ctechnologies cenable cglobal ccommunication
c. the cpolitical cand cregulatory cissues care cexactly cthe csame cin cevery ccountry
d. a cand cb
e. none cof cthe cabove
Answer: cD Difficulty: cEasy Reference: c p. c4
2. In c1970, ca ckey cdecision cregarding cMCI:
a. set cup cthe cTelecommunications cCompetition cand cDeregulation cAct
b. permitted cMCI cto cprovide climited clong cdistance cservice cin cthe cU.S.
c. permitted ctelephone cand/or ccomputer cequipment cthat cwas cnot cmanufactured cby
cBell cTelephone cto cbe cconnected cto cAT&T’s cnetwork
d. divided cAT&T cinto ctwo cparts: cone cpart cfor clong cdistance cservice, cand ca
csecond cpart, ccomprised cof cseven coperating ccompanies, cfor clocal ctelephone
cservice
e. set cup cderegulation cfor cinternational ctelecommunications cmarkets cin c68 ccountries
Answer: cB Difficulty: cEasy Reference: c c p. c6
3. In c1984, ca cfederal cjudge cbroke cup ca chighly ccontested ctelephone cservice cmonopoly cand:
a. set cup cthe cTelecommunications cCompetition cand cDeregulation cAct
b. permitted cMCI cto cprovide climited clong cdistance cservice cin cthe cU.S.
c. permitted ctelephone cand/or ccomputer cequipment cthat cwas cnot cmanufactured
cby cBell cTelephone cto cbe cconnected cto cAT&T’s cnetwork
d. divided cAT&T cinto ctwo cparts: cone cpart cfor clong cdistance cservice, cand ca
csecond cpart, ccomprised cof cseven cregional coperating ccompanies, cfor clocal
ctelephone cservice
e. set cup cderegulation cfor cinternational ctelecommunications cmarkets cin c68 ccountries
Answer: cD Difficulty: cEasy Reference: c p. c6
