,https://www.stuvia.com/
Chapter 1 hg
Introduction to Data hg hg
Communications
hg
True-False Questions
hg
The h g following hg are h g possible hgTrue/False h g questions hg for h g tests. hgThe h g statement h g is hg given
hg and hg the h g answer h
is hgprovided hgin hgsquare hgbrackets. hgThe hglevel hgof hgdifficulty hg(easy, hgmoderate,
g
hgdifficult) hgand hgthe hgpage hgnumber(s) hgrelevant hgto hgthe hgtopic hgare hgalso hgfurnished.
1. According hgto hgJohn hgChambers, hgCEO hgof hgCisco hg(a hgleading hgnetworking hgtechnology
hgcompany),hthe hginformation hgage hgis hgthe hgsecond hgIndustrial hgRevolution.
g
Answer:True Difficulty:hgEasy Reference: h g p. hg4
2. Due hgto hgrecent hgadvances hgin hghigh hgspeed hgcommunication hgnetworks, hgthe hginformation
hglag, hgor hgtheh
time hgit hgtakes hgfor hginformation hgto hgbe hgdisseminated hgaround hgthe hgworld,
g
hghas hgbeen hgsignificantly hgshortened.
Answer:True Difficulty: h g Easy Reference: h g p.4
3. One hgperspective hgof hgdata hgcommunications hgand hgnetworking hgas hgstated hgin hgthe hgtextbook,
hgexaminesh the hgmanagement hgof hgnetworking hgtechnologies, hgincluding hgsecurity, hgnetwork
g
hgdesign, hgand hgmanaging hgthe hgnetwork hgon hga hgday-to-day hgbasis hgand hglong hgterm hgbasis.
Answer:True Difficulty: h g Moderate Reference: h g p. hg5
4. The hgfirst hgelectronic hgdata hgcommunication hgsystem hgwas hgthe hgtelephone hgdeveloped hgby
hgAlexanderh Graham hgBell.
g
Answer:False Difficulty:hgEasy Reference: h g p. hg5
5. The hgfirst hgtranscontinental hgtelephone hgservice hgwas hgestablished hgin hgthe hg1940s.
Answer:False Difficulty:hgEasy Reference: h g p. hg6
6. An hgInter-Exchange hgCarrier hg(IXC) hgprovides hgonly hglocal hgtelephone hgservices hgto
hghomes hgandh
businesses.
g
Answer: hgFalse Difficulty: h g Easy Reference: h g p. hg6
7. Common hgcarriers hginclude hgthe hgRBOCs, hgIXCs, hgand hgCable hgTV hgcompanies.
Answer:True Difficulty:hgModerate Reference: h g p. hg7
8. The hgTelecommunications hgAct hgof hg1996 hgnow hgpermits hgthe hgRBOCs hgto hgprovide hglong
hgdistanceh
outside hgthe hgregion hgin hgwhich hgthey hgprovide hglocal hgtelephone hgservices.
g
Answer: hgTrue Difficulty:hgModerate Reference: h g p. hg7
9. The hgInternet hgwas hgstarted hgby hgthe hgU.S. hgDepartment hgof hgdefense hgin hg1969 hgas hga
hgnetwork hgof hgfourh
computers hgcalled hgARPANET.
g
Answer: hgTrue Difficulty: h g Moderate Reference: h g p. hg9
10. Telecommunications hgis hgthe hgtransmission hgof hgvoice hgand hgvideo hgas hgwell hgas hgdata
hgand hgimpliesh
transmitting hga hglonger hgdistance hgthan hgin hga hgdata hgcommunication
g
hgnetwork.
Answer:False Difficulty:hgModerate Reference: h g p. hg11
,https://www.stuvia.com/
11. A hglocal hgarea hgnetwork hg(LAN) hgconnects hgother hgLANs hgand hgBNs hglocated hgin hgdifferent
hgareas hgto hgeachhother hgand hgto hgwide hgarea hgnetworks hgin hga hgspan hgfrom hg3 hgto hg30 hgmiles.
g
Answer: hgFalse Difficulty:hgModerate Reference: h g p. hg13
12. An hgintranet hgis hga hgLAN hgthat hguses hgInternet hgtechnologies hgand hgis hgpublicly hgavailable
hgto hgpeopleh
outside hgof hgthe hgorganization.
g
Answer: hgFalse Difficulty:hgModerate Reference: h g p. hg15
13. A hgcar hgmanufacturer hgmay hggive hgaccess hgto hgcertain hgportions hgof hgits hgnetwork hgto hgsome hgof
hgits hgsuppliersh
via hgInternet. hgThis hgis hgan hgexample hgof hgan hgExtranet.
g
Answer: hgTrue Difficulty:hgModerate Reference: h g p. hg15
14. The hgOSI hgmodel hgis hgthe hgmost hgwidely hgused hgnetwork hgmodel hgto hgdevelop hgand hgbuild hgnetworks
hgtoday.
Answer: hgTrue Difficulty:hgModerate Reference: h g p. hg16
15. The hgnetwork hglayer hgis hgresponsible hgfor hgrouting hgmessages hgfrom hgthe hgsource
hgcomputer hgto hgtheh
destination hgcomputer.
g
Answer: hgTrue Difficulty:hgEasy Reference: h g p. hg17
16. In hgthe hgOSI hgmodel, hgthe hgapplication hglayer hgis hgthe hgend hguser‟s hgaccess hgto hgthe hgnetwork.
Answer: hgTrue Difficulty:hgModerate Reference: h g p. hg18
17. The hgapplication hglayer hgis hgthe hgseventh hglayer hgof hgthe hgInternet hgmodel hgand hgprovides hgthe
hgend hguser‟sh
access hgto hgthe hgnetwork.
g
Answer: hgTrue Difficulty:hgModerate Reference: h g p. hg18
18. At hgthe hgtransport hglayer hgin hgthe hgInternet hgmodel, hgTCP hgis hgresponsible hgfor hgbreaking hglarge
hgfiles hgreceived hgfrom hgthe hgapplication hglayer hginto hgsmaller hgpackets hgand hgopening hga
hgconnection hgto hga hgserverhfor hgtransferring hgthe hgpackets.
g
Answer: hgTrue Difficulty: hgDifficult Reference: h g p. hg17
19. Ethernet hgis hgan hgexample hgof hga hgnetwork hglayer hgprotocol.
Answer: hgFalse Difficulty:hgEasy Reference: h g p. hg17
20. Data hgcommunication hgstandards hgenable hgeach hglayer hgin hgthe hgsending hgcomputer hgto
hgcommunicatehwith hgits hgcorresponding hglayer hgin hgthe hgreceiving hgcomputer.
g
Answer: hgTrue Difficulty: hgEasy Reference: h g p. hg22
21. The hgspecification hgstage hgof hgthe hgformal hgstandardization hgprocess hgconsists hgof
hgdevelopinghnomenclature hgand hgidentifying hgthe hgproblems hgto hgbe hgaddressed.
g
Answer: hgTrue Difficulty: hgModerate Reference: h g p. hg23
22. ANSI hgis hga hgvoting hgparticipant hgin hgthe hgISO.
Answer: hgTrue Difficulty: hgEasy Reference: h g p. hg23
23. Passive hgoptical hgnetworking, hga hgkey hgtrend hgfor hgthe hgfuture, hgmeans hgthat hgvirtually hgany
hgcomputer hgwillh
be hgable hgto hgcommunicate hgwith hgany hgother hgcomputer hgin hgthe hgworld.
g
Answer: Difficulty: Reference: h g p.
hgFalse hgModerate hg26
,https://www.stuvia.com/
24. The hghigh hgbandwidth hgrequirements hg(high hgcommunications hgneeds) hgfor hgvideo hghave
hgslowed hgitsh
integration hginto hgcomputer hgnetworks.
g
Answer: hgTrue Difficulty: hgModerate Reference: h g p. hg28
25. An hgApplication hgService hgProvider hg(ASP) hgdevelops hga hgspecific hgsystem hgand hgcompanies
hgpurchaseh
or hgrent hgthe hgservice hgwithout hginstalling hgthe hgsystem hgon hgtheir hgown hgcomputers.
g
Answer: hgTrue Difficulty: hgModerate Reference: h g p. hg29
MULTIPLE CHOICE hg
The hgfollowing hgare hgpossible hgmultiple-choice hgquestions hgfor hgtests. hgThe hgquestion hgis hgposed
hgand hgthe hganswer hgis hgprovided hgunder hgthe hgchoices. hgThe hglevel hgof hgdifficulty hg(easy, hgmoderate,
hgdifficult) hgand hgthe hgpage hgnumber(s) hgrelevant hgto hgthe hgtopic hgis hgalso hgfurnished.
1. Data hgcommunications hgand hgnetworking hgcan hgbe hgconsidered hgas hga hgglobal hgarea hgof hgstudy
hgbecause:
a. new h g technologies h g and h g applications h g emerge h g from h g a h g variety h g of
h g countries h g and h g spreadhgaround hgthe hgworld
b. the hgtechnologies hgenable hgglobal hgcommunication
c. the hgpolitical hgand hgregulatory hgissues hgare hgexactly hgthe hgsame hgin hgevery hgcountry
d. a hgand hgb
e. none hgof hgthe hgabove
Answer: hgD Difficulty: hgEasy Reference: h g p. hg4
2. In hg1970, hga hgkey hgdecision hgregarding hgMCI:
a. set hgup hgthe hgTelecommunications hgCompetition hgand hgDeregulation hgAct
b. permitted hgMCI hgto hgprovide hglimited hglong hgdistance hgservice hgin hgthe hgU.S.
c. permitted h g telephone h g and/or h g computer h g equipment h g that h g was h g not
h g manufactured h g by h g BellhgTelephone hgto hgbe hgconnected hgto hgAT&T‟s hgnetwork
d. divided hgAT&T h g into h g two h g parts: h g one h g part h g for h g long h g distance h g service, h g and h g a
h g second h g part,h
comprised hgof hgseven hgoperating hgcompanies, hgfor hglocal hgtelephone
g
hgservice
e. set hgup hgderegulation hgfor hginternational hgtelecommunications hgmarkets hgin hg68 hgcountries
Answer: hgB Difficulty: hgEasy Reference: hg hgp. hg6
3. In hg1984, hga hgfederal hgjudge hgbroke hgup hga hghighly hgcontested hgtelephone hgservice hgmonopoly
hgand:
a. set hgup hgthe hgTelecommunications hgCompetition hgand hgDeregulation hgAct
b. permitted hgMCI hgto hgprovide hglimited hglong hgdistance hgservice hgin hgthe hgU.S.
c. permitted hgtelephone hgand/or hgcomputer hgequipment hgthat hgwas hgnot
hgmanufactured hgby hgBell hgTelephone hgto hgbe hgconnected hgto hgAT&T‟s hgnetwork
d. divided hgAT&T hginto hgtwo hgparts: hgone hgpart hgfor hglong hgdistance hgservice, hgand hga
hgsecond hgpart, hgcomprised hgof hgseven hgregional hgoperating hgcompanies, hgfor hglocal
Answer: Difficulty: Reference: h g p.
hgD hgEasy hg6
Chapter 1 hg
Introduction to Data hg hg
Communications
hg
True-False Questions
hg
The h g following hg are h g possible hgTrue/False h g questions hg for h g tests. hgThe h g statement h g is hg given
hg and hg the h g answer h
is hgprovided hgin hgsquare hgbrackets. hgThe hglevel hgof hgdifficulty hg(easy, hgmoderate,
g
hgdifficult) hgand hgthe hgpage hgnumber(s) hgrelevant hgto hgthe hgtopic hgare hgalso hgfurnished.
1. According hgto hgJohn hgChambers, hgCEO hgof hgCisco hg(a hgleading hgnetworking hgtechnology
hgcompany),hthe hginformation hgage hgis hgthe hgsecond hgIndustrial hgRevolution.
g
Answer:True Difficulty:hgEasy Reference: h g p. hg4
2. Due hgto hgrecent hgadvances hgin hghigh hgspeed hgcommunication hgnetworks, hgthe hginformation
hglag, hgor hgtheh
time hgit hgtakes hgfor hginformation hgto hgbe hgdisseminated hgaround hgthe hgworld,
g
hghas hgbeen hgsignificantly hgshortened.
Answer:True Difficulty: h g Easy Reference: h g p.4
3. One hgperspective hgof hgdata hgcommunications hgand hgnetworking hgas hgstated hgin hgthe hgtextbook,
hgexaminesh the hgmanagement hgof hgnetworking hgtechnologies, hgincluding hgsecurity, hgnetwork
g
hgdesign, hgand hgmanaging hgthe hgnetwork hgon hga hgday-to-day hgbasis hgand hglong hgterm hgbasis.
Answer:True Difficulty: h g Moderate Reference: h g p. hg5
4. The hgfirst hgelectronic hgdata hgcommunication hgsystem hgwas hgthe hgtelephone hgdeveloped hgby
hgAlexanderh Graham hgBell.
g
Answer:False Difficulty:hgEasy Reference: h g p. hg5
5. The hgfirst hgtranscontinental hgtelephone hgservice hgwas hgestablished hgin hgthe hg1940s.
Answer:False Difficulty:hgEasy Reference: h g p. hg6
6. An hgInter-Exchange hgCarrier hg(IXC) hgprovides hgonly hglocal hgtelephone hgservices hgto
hghomes hgandh
businesses.
g
Answer: hgFalse Difficulty: h g Easy Reference: h g p. hg6
7. Common hgcarriers hginclude hgthe hgRBOCs, hgIXCs, hgand hgCable hgTV hgcompanies.
Answer:True Difficulty:hgModerate Reference: h g p. hg7
8. The hgTelecommunications hgAct hgof hg1996 hgnow hgpermits hgthe hgRBOCs hgto hgprovide hglong
hgdistanceh
outside hgthe hgregion hgin hgwhich hgthey hgprovide hglocal hgtelephone hgservices.
g
Answer: hgTrue Difficulty:hgModerate Reference: h g p. hg7
9. The hgInternet hgwas hgstarted hgby hgthe hgU.S. hgDepartment hgof hgdefense hgin hg1969 hgas hga
hgnetwork hgof hgfourh
computers hgcalled hgARPANET.
g
Answer: hgTrue Difficulty: h g Moderate Reference: h g p. hg9
10. Telecommunications hgis hgthe hgtransmission hgof hgvoice hgand hgvideo hgas hgwell hgas hgdata
hgand hgimpliesh
transmitting hga hglonger hgdistance hgthan hgin hga hgdata hgcommunication
g
hgnetwork.
Answer:False Difficulty:hgModerate Reference: h g p. hg11
,https://www.stuvia.com/
11. A hglocal hgarea hgnetwork hg(LAN) hgconnects hgother hgLANs hgand hgBNs hglocated hgin hgdifferent
hgareas hgto hgeachhother hgand hgto hgwide hgarea hgnetworks hgin hga hgspan hgfrom hg3 hgto hg30 hgmiles.
g
Answer: hgFalse Difficulty:hgModerate Reference: h g p. hg13
12. An hgintranet hgis hga hgLAN hgthat hguses hgInternet hgtechnologies hgand hgis hgpublicly hgavailable
hgto hgpeopleh
outside hgof hgthe hgorganization.
g
Answer: hgFalse Difficulty:hgModerate Reference: h g p. hg15
13. A hgcar hgmanufacturer hgmay hggive hgaccess hgto hgcertain hgportions hgof hgits hgnetwork hgto hgsome hgof
hgits hgsuppliersh
via hgInternet. hgThis hgis hgan hgexample hgof hgan hgExtranet.
g
Answer: hgTrue Difficulty:hgModerate Reference: h g p. hg15
14. The hgOSI hgmodel hgis hgthe hgmost hgwidely hgused hgnetwork hgmodel hgto hgdevelop hgand hgbuild hgnetworks
hgtoday.
Answer: hgTrue Difficulty:hgModerate Reference: h g p. hg16
15. The hgnetwork hglayer hgis hgresponsible hgfor hgrouting hgmessages hgfrom hgthe hgsource
hgcomputer hgto hgtheh
destination hgcomputer.
g
Answer: hgTrue Difficulty:hgEasy Reference: h g p. hg17
16. In hgthe hgOSI hgmodel, hgthe hgapplication hglayer hgis hgthe hgend hguser‟s hgaccess hgto hgthe hgnetwork.
Answer: hgTrue Difficulty:hgModerate Reference: h g p. hg18
17. The hgapplication hglayer hgis hgthe hgseventh hglayer hgof hgthe hgInternet hgmodel hgand hgprovides hgthe
hgend hguser‟sh
access hgto hgthe hgnetwork.
g
Answer: hgTrue Difficulty:hgModerate Reference: h g p. hg18
18. At hgthe hgtransport hglayer hgin hgthe hgInternet hgmodel, hgTCP hgis hgresponsible hgfor hgbreaking hglarge
hgfiles hgreceived hgfrom hgthe hgapplication hglayer hginto hgsmaller hgpackets hgand hgopening hga
hgconnection hgto hga hgserverhfor hgtransferring hgthe hgpackets.
g
Answer: hgTrue Difficulty: hgDifficult Reference: h g p. hg17
19. Ethernet hgis hgan hgexample hgof hga hgnetwork hglayer hgprotocol.
Answer: hgFalse Difficulty:hgEasy Reference: h g p. hg17
20. Data hgcommunication hgstandards hgenable hgeach hglayer hgin hgthe hgsending hgcomputer hgto
hgcommunicatehwith hgits hgcorresponding hglayer hgin hgthe hgreceiving hgcomputer.
g
Answer: hgTrue Difficulty: hgEasy Reference: h g p. hg22
21. The hgspecification hgstage hgof hgthe hgformal hgstandardization hgprocess hgconsists hgof
hgdevelopinghnomenclature hgand hgidentifying hgthe hgproblems hgto hgbe hgaddressed.
g
Answer: hgTrue Difficulty: hgModerate Reference: h g p. hg23
22. ANSI hgis hga hgvoting hgparticipant hgin hgthe hgISO.
Answer: hgTrue Difficulty: hgEasy Reference: h g p. hg23
23. Passive hgoptical hgnetworking, hga hgkey hgtrend hgfor hgthe hgfuture, hgmeans hgthat hgvirtually hgany
hgcomputer hgwillh
be hgable hgto hgcommunicate hgwith hgany hgother hgcomputer hgin hgthe hgworld.
g
Answer: Difficulty: Reference: h g p.
hgFalse hgModerate hg26
,https://www.stuvia.com/
24. The hghigh hgbandwidth hgrequirements hg(high hgcommunications hgneeds) hgfor hgvideo hghave
hgslowed hgitsh
integration hginto hgcomputer hgnetworks.
g
Answer: hgTrue Difficulty: hgModerate Reference: h g p. hg28
25. An hgApplication hgService hgProvider hg(ASP) hgdevelops hga hgspecific hgsystem hgand hgcompanies
hgpurchaseh
or hgrent hgthe hgservice hgwithout hginstalling hgthe hgsystem hgon hgtheir hgown hgcomputers.
g
Answer: hgTrue Difficulty: hgModerate Reference: h g p. hg29
MULTIPLE CHOICE hg
The hgfollowing hgare hgpossible hgmultiple-choice hgquestions hgfor hgtests. hgThe hgquestion hgis hgposed
hgand hgthe hganswer hgis hgprovided hgunder hgthe hgchoices. hgThe hglevel hgof hgdifficulty hg(easy, hgmoderate,
hgdifficult) hgand hgthe hgpage hgnumber(s) hgrelevant hgto hgthe hgtopic hgis hgalso hgfurnished.
1. Data hgcommunications hgand hgnetworking hgcan hgbe hgconsidered hgas hga hgglobal hgarea hgof hgstudy
hgbecause:
a. new h g technologies h g and h g applications h g emerge h g from h g a h g variety h g of
h g countries h g and h g spreadhgaround hgthe hgworld
b. the hgtechnologies hgenable hgglobal hgcommunication
c. the hgpolitical hgand hgregulatory hgissues hgare hgexactly hgthe hgsame hgin hgevery hgcountry
d. a hgand hgb
e. none hgof hgthe hgabove
Answer: hgD Difficulty: hgEasy Reference: h g p. hg4
2. In hg1970, hga hgkey hgdecision hgregarding hgMCI:
a. set hgup hgthe hgTelecommunications hgCompetition hgand hgDeregulation hgAct
b. permitted hgMCI hgto hgprovide hglimited hglong hgdistance hgservice hgin hgthe hgU.S.
c. permitted h g telephone h g and/or h g computer h g equipment h g that h g was h g not
h g manufactured h g by h g BellhgTelephone hgto hgbe hgconnected hgto hgAT&T‟s hgnetwork
d. divided hgAT&T h g into h g two h g parts: h g one h g part h g for h g long h g distance h g service, h g and h g a
h g second h g part,h
comprised hgof hgseven hgoperating hgcompanies, hgfor hglocal hgtelephone
g
hgservice
e. set hgup hgderegulation hgfor hginternational hgtelecommunications hgmarkets hgin hg68 hgcountries
Answer: hgB Difficulty: hgEasy Reference: hg hgp. hg6
3. In hg1984, hga hgfederal hgjudge hgbroke hgup hga hghighly hgcontested hgtelephone hgservice hgmonopoly
hgand:
a. set hgup hgthe hgTelecommunications hgCompetition hgand hgDeregulation hgAct
b. permitted hgMCI hgto hgprovide hglimited hglong hgdistance hgservice hgin hgthe hgU.S.
c. permitted hgtelephone hgand/or hgcomputer hgequipment hgthat hgwas hgnot
hgmanufactured hgby hgBell hgTelephone hgto hgbe hgconnected hgto hgAT&T‟s hgnetwork
d. divided hgAT&T hginto hgtwo hgparts: hgone hgpart hgfor hglong hgdistance hgservice, hgand hga
hgsecond hgpart, hgcomprised hgof hgseven hgregional hgoperating hgcompanies, hgfor hglocal
Answer: Difficulty: Reference: h g p.
hgD hgEasy hg6
