, Chapter cv1
Introduction cvto cvData cvCommunications
True-False cvQuestions
The cvfollowing cvare cvpossible cvTrue/False cvquestions cvfor cvtests. cvThe cvstatement cvis cvgiven
cvand cvthe cvanswer cvis cvprovided cvin cvsquare cvbrackets. cvThe cvlevel cvof cvdifficulty cv(easy,
cvmoderate, cvdifficult) cvand cvthe cvpage cvnumber(s) cvrelevant cvto cvthe cvtopic cvare cvalso
cvfurnished.
1. According cvto cvJohn cvChambers, cvCEO cvof cvCisco cv(a cvleading cvnetworking
cvtechnology cvcompany), cvthe cvinformation cvage cvis cvthe cvsecond cvIndustrial
cvRevolution.
Answer:True Difficulty: cvEasy Reference: cv p. cv4
2. Due cvto cvrecent cvadvances cvin cvhigh cvspeed cvcommunication cvnetworks, cvthe
cvinformation cvlag, cvor cvthe cvtime cvit cvtakes cvfor cvinformation cvto cvbe cvdisseminated
cvaround cvthe cvworld, cvhas cvbeen cvsignificantly cvshortened.
Answer:True Difficulty: c v Easy Reference: c v p.4
3. One cvperspective cvof cvdata cvcommunications cvand cvnetworking cvas cvstated cvin cvthe
cvtextbook, cvexamines cvthe cvmanagement cvof cvnetworking cvtechnologies, cvincluding
cvsecurity, cvnetwork cvdesign, cvand cvmanaging cvthe cvnetwork cvon cva cvday-to-day cvbasis
cvand cvlong cvterm cvbasis.
Answer:True Difficulty: c v Moderate Reference: c v p. cv5
4. The cvfirst cvelectronic cvdata cvcommunication cvsystem cvwas cvthe cvtelephone cvdeveloped
cvby cvAlexander cvGraham cvBell.
Answer:False Difficulty: cvEasy Reference: c v p. cv5
5. The cvfirst cvtranscontinental cvtelephone cvservice cvwas cvestablished cvin cvthe cv1940s.
Answer:False Difficulty: cvEasy Reference: c v p. cv6
6. An cvInter-Exchange cvCarrier cv(IXC) cvprovides cvonly cvlocal cvtelephone cvservices
cvto cvhomes cvand cvbusinesses.
Answer: cvFalse Difficulty: c v Easy Reference: c v p. cv6
7. Common cvcarriers cvinclude cvthe cvRBOCs, cvIXCs, cvand cvCable cvTV cvcompanies.
Answer:True Difficulty: cvModerate Reference: c v p. cv7
8. The cvTelecommunications cvAct cvof cv1996 cvnow cvpermits cvthe cvRBOCs cvto cvprovide
cvlong cvdistance cvoutside cvthe cvregion cvin cvwhich cvthey cvprovide cvlocal cvtelephone
cvservices.
Answer: cvTrue Difficulty: cvModerate Reference: c v p. cv7
9. The cvInternet cvwas cvstarted cvby cvthe cvU.S. cvDepartment cvof cvdefense cvin cv1969 cvas
cva cvnetwork cvof cvfour cvcomputers cvcalled cvARPANET.
Answer:False Difficulty: Reference:
cvModerate p. cv11
, Answer: cvTrue Difficulty: c v Moderate Reference: c v p. cv9
10. Telecommunications cvis cvthe cvtransmission cvof cvvoice cvand cvvideo cvas cvwell cvas
cvdata cvand cvimplies cvtransmitting cva cvlonger cvdistance cvthan cvin cva cvdata
cvcommunication cvnetwork.
Answer:False Difficulty: Reference:
cvModerate p. cv11
, 11. A cvlocal cvarea cvnetwork cv(LAN) cvconnects cvother cvLANs cvand cvBNs cvlocated cvin
cvdifferent cvareas cvto cveach cvother cvand cvto cvwide cvarea cvnetworks cvin cva cvspan cvfrom
cv3 cvto cv30 cvmiles.
Answer: cvFalse Difficulty: cvModerate Reference: c v p. cv13
12. An cvintranet cvis cva cvLAN cvthat cvuses cvInternet cvtechnologies cvand cvis cvpublicly
cvavailable cvto cvpeople cvoutside cvof cvthe cvorganization.
Answer: cvFalse Difficulty: cvModerate Reference: c v p. cv15
13. A cvcar cvmanufacturer cvmay cvgive cvaccess cvto cvcertain cvportions cvof cvits cvnetwork cvto
cvsome cvof cvits cvsuppliers cvvia cvInternet. cvThis cvis cvan cvexample cvof cvan cvExtranet.
Answer: cvTrue Difficulty: cvModerate Reference: c v p. cv15
14. The cvOSI cvmodel cvis cvthe cvmost cvwidely cvused cvnetwork cvmodel cvto cvdevelop cvand cvbuild
cvnetworks cvtoday.
Answer: cvTrue Difficulty: cvModerate Reference: c v p. cv16
15. The cvnetwork cvlayer cvis cvresponsible cvfor cvrouting cvmessages cvfrom cvthe cvsource
cvcomputer cvto cvthe cvdestination cvcomputer.
Answer: cvTrue Difficulty: cvEasy Reference: c v p. cv17
16. In cvthe cvOSI cvmodel, cvthe cvapplication cvlayer cvis cvthe cvend cvuser‟s cvaccess cvto cvthe
cvnetwork.
Answer: cvTrue Difficulty: cvModerate Reference: c v p. cv18
17. The cvapplication cvlayer cvis cvthe cvseventh cvlayer cvof cvthe cvInternet cvmodel cvand
cvprovides cvthe cvend cvuser‟s cvaccess cvto cvthe cvnetwork.
Answer: cvTrue Difficulty: cvModerate Reference: c v p. cv18
18. At cvthe cvtransport cvlayer cvin cvthe cvInternet cvmodel, cvTCP cvis cvresponsible cvfor
cvbreaking cvlarge cvfiles cvreceived cvfrom cvthe cvapplication cvlayer cvinto cvsmaller cvpackets
cvand cvopening cva cvconnection cvto cva cvserver cvfor cvtransferring cvthe cvpackets.
Answer: cvTrue Difficulty: cvDifficult Reference: cv p. cv17
19. Ethernet cvis cvan cvexample cvof cva cvnetwork cvlayer cvprotocol.
Answer: cvFalse Difficulty: cvEasy Reference: c v p. cv17
20. Data cvcommunication cvstandards cvenable cveach cvlayer cvin cvthe cvsending cvcomputer cvto
cvcommunicate cvwith cvits cvcorresponding cvlayer cvin cvthe cvreceiving cvcomputer.
Answer: cvTrue Difficulty: cvEasy Reference: cv p. cv22
21. The cvspecification cvstage cvof cvthe cvformal cvstandardization cvprocess cvconsists
cvof cvdeveloping cvnomenclature cvand cvidentifying cvthe cvproblems cvto cvbe
cvaddressed.
Answer: cvTrue Difficulty: cvModerate Reference: cv p. cv23
22. ANSI cvis cva cvvoting cvparticipant cvin cvthe cvISO.
Answer: Difficulty: Reference: cv p.
cvFalse cvModerate cv26
Introduction cvto cvData cvCommunications
True-False cvQuestions
The cvfollowing cvare cvpossible cvTrue/False cvquestions cvfor cvtests. cvThe cvstatement cvis cvgiven
cvand cvthe cvanswer cvis cvprovided cvin cvsquare cvbrackets. cvThe cvlevel cvof cvdifficulty cv(easy,
cvmoderate, cvdifficult) cvand cvthe cvpage cvnumber(s) cvrelevant cvto cvthe cvtopic cvare cvalso
cvfurnished.
1. According cvto cvJohn cvChambers, cvCEO cvof cvCisco cv(a cvleading cvnetworking
cvtechnology cvcompany), cvthe cvinformation cvage cvis cvthe cvsecond cvIndustrial
cvRevolution.
Answer:True Difficulty: cvEasy Reference: cv p. cv4
2. Due cvto cvrecent cvadvances cvin cvhigh cvspeed cvcommunication cvnetworks, cvthe
cvinformation cvlag, cvor cvthe cvtime cvit cvtakes cvfor cvinformation cvto cvbe cvdisseminated
cvaround cvthe cvworld, cvhas cvbeen cvsignificantly cvshortened.
Answer:True Difficulty: c v Easy Reference: c v p.4
3. One cvperspective cvof cvdata cvcommunications cvand cvnetworking cvas cvstated cvin cvthe
cvtextbook, cvexamines cvthe cvmanagement cvof cvnetworking cvtechnologies, cvincluding
cvsecurity, cvnetwork cvdesign, cvand cvmanaging cvthe cvnetwork cvon cva cvday-to-day cvbasis
cvand cvlong cvterm cvbasis.
Answer:True Difficulty: c v Moderate Reference: c v p. cv5
4. The cvfirst cvelectronic cvdata cvcommunication cvsystem cvwas cvthe cvtelephone cvdeveloped
cvby cvAlexander cvGraham cvBell.
Answer:False Difficulty: cvEasy Reference: c v p. cv5
5. The cvfirst cvtranscontinental cvtelephone cvservice cvwas cvestablished cvin cvthe cv1940s.
Answer:False Difficulty: cvEasy Reference: c v p. cv6
6. An cvInter-Exchange cvCarrier cv(IXC) cvprovides cvonly cvlocal cvtelephone cvservices
cvto cvhomes cvand cvbusinesses.
Answer: cvFalse Difficulty: c v Easy Reference: c v p. cv6
7. Common cvcarriers cvinclude cvthe cvRBOCs, cvIXCs, cvand cvCable cvTV cvcompanies.
Answer:True Difficulty: cvModerate Reference: c v p. cv7
8. The cvTelecommunications cvAct cvof cv1996 cvnow cvpermits cvthe cvRBOCs cvto cvprovide
cvlong cvdistance cvoutside cvthe cvregion cvin cvwhich cvthey cvprovide cvlocal cvtelephone
cvservices.
Answer: cvTrue Difficulty: cvModerate Reference: c v p. cv7
9. The cvInternet cvwas cvstarted cvby cvthe cvU.S. cvDepartment cvof cvdefense cvin cv1969 cvas
cva cvnetwork cvof cvfour cvcomputers cvcalled cvARPANET.
Answer:False Difficulty: Reference:
cvModerate p. cv11
, Answer: cvTrue Difficulty: c v Moderate Reference: c v p. cv9
10. Telecommunications cvis cvthe cvtransmission cvof cvvoice cvand cvvideo cvas cvwell cvas
cvdata cvand cvimplies cvtransmitting cva cvlonger cvdistance cvthan cvin cva cvdata
cvcommunication cvnetwork.
Answer:False Difficulty: Reference:
cvModerate p. cv11
, 11. A cvlocal cvarea cvnetwork cv(LAN) cvconnects cvother cvLANs cvand cvBNs cvlocated cvin
cvdifferent cvareas cvto cveach cvother cvand cvto cvwide cvarea cvnetworks cvin cva cvspan cvfrom
cv3 cvto cv30 cvmiles.
Answer: cvFalse Difficulty: cvModerate Reference: c v p. cv13
12. An cvintranet cvis cva cvLAN cvthat cvuses cvInternet cvtechnologies cvand cvis cvpublicly
cvavailable cvto cvpeople cvoutside cvof cvthe cvorganization.
Answer: cvFalse Difficulty: cvModerate Reference: c v p. cv15
13. A cvcar cvmanufacturer cvmay cvgive cvaccess cvto cvcertain cvportions cvof cvits cvnetwork cvto
cvsome cvof cvits cvsuppliers cvvia cvInternet. cvThis cvis cvan cvexample cvof cvan cvExtranet.
Answer: cvTrue Difficulty: cvModerate Reference: c v p. cv15
14. The cvOSI cvmodel cvis cvthe cvmost cvwidely cvused cvnetwork cvmodel cvto cvdevelop cvand cvbuild
cvnetworks cvtoday.
Answer: cvTrue Difficulty: cvModerate Reference: c v p. cv16
15. The cvnetwork cvlayer cvis cvresponsible cvfor cvrouting cvmessages cvfrom cvthe cvsource
cvcomputer cvto cvthe cvdestination cvcomputer.
Answer: cvTrue Difficulty: cvEasy Reference: c v p. cv17
16. In cvthe cvOSI cvmodel, cvthe cvapplication cvlayer cvis cvthe cvend cvuser‟s cvaccess cvto cvthe
cvnetwork.
Answer: cvTrue Difficulty: cvModerate Reference: c v p. cv18
17. The cvapplication cvlayer cvis cvthe cvseventh cvlayer cvof cvthe cvInternet cvmodel cvand
cvprovides cvthe cvend cvuser‟s cvaccess cvto cvthe cvnetwork.
Answer: cvTrue Difficulty: cvModerate Reference: c v p. cv18
18. At cvthe cvtransport cvlayer cvin cvthe cvInternet cvmodel, cvTCP cvis cvresponsible cvfor
cvbreaking cvlarge cvfiles cvreceived cvfrom cvthe cvapplication cvlayer cvinto cvsmaller cvpackets
cvand cvopening cva cvconnection cvto cva cvserver cvfor cvtransferring cvthe cvpackets.
Answer: cvTrue Difficulty: cvDifficult Reference: cv p. cv17
19. Ethernet cvis cvan cvexample cvof cva cvnetwork cvlayer cvprotocol.
Answer: cvFalse Difficulty: cvEasy Reference: c v p. cv17
20. Data cvcommunication cvstandards cvenable cveach cvlayer cvin cvthe cvsending cvcomputer cvto
cvcommunicate cvwith cvits cvcorresponding cvlayer cvin cvthe cvreceiving cvcomputer.
Answer: cvTrue Difficulty: cvEasy Reference: cv p. cv22
21. The cvspecification cvstage cvof cvthe cvformal cvstandardization cvprocess cvconsists
cvof cvdeveloping cvnomenclature cvand cvidentifying cvthe cvproblems cvto cvbe
cvaddressed.
Answer: cvTrue Difficulty: cvModerate Reference: cv p. cv23
22. ANSI cvis cva cvvoting cvparticipant cvin cvthe cvISO.
Answer: Difficulty: Reference: cv p.
cvFalse cvModerate cv26
