Levels Tought:
Elementary,Middle School,High School,College,University,PHD
Teaching Since: | Apr 2017 |
Last Sign in: | 8 Weeks Ago, 3 Days Ago |
Questions Answered: | 7559 |
Tutorials Posted: | 7341 |
BS,MBA, PHD
Adelphi University/Devry
Apr-2000 - Mar-2005
HOD ,Professor
Adelphi University
Sep-2007 - Apr-2017
WEEK4ESSAYQUESTIONS
Instructions:Answerallquestionsinasingledocument.Thensubmittotheappropriateassignmentfolder.Eachresponsetoasingleessayquestionshouldbeaboutahalf-pageinlength(about150words).
1.     Communicationswithinacomputernetworkrelyonnumerouscomponentsfordatatotraversefromtheinitialsenderofamessageorfileto thereceiveratthedistantendofthecommunicationpath.Inadditiontothemediathatthedatatravelsacross,thedevicesthatguidethedatapacketsthroughthenetwork,andtheprotocolsthatestablishend-to-endconnectivityandnegotiatethecommunication,networkservicesplayacriticalroleinprovidingthenecessaryaddressingandnameresolutionservices.Describethefollowingservicesandtheirroleinnetworkcommunications:ARP,DHCP,ICMP,SNMP,andDNS.
2.     ModernorganizationsrelyontheInternetforinformationandresearchnecessarytostaycompetitivebutthisaccesscancomewithsignificantriskiftheydon’ttakethenecessarystepstosafeguardtheirinternalresourcesfromoutsideattackers.Inthisweek’sreading,varioustypesoffirewallsandfirewallconfigurationswerediscussed.Describethetermsbastionhost,DMZ,dual-homedfirewall,screenedhost,andscreenedsubnetandtheirrolesinfirewallarchitectures.
3.     Manyorganizationsemployamobileworkforceand/orprovidetheoptionofteleworktotheiremployeestoallowthemtoworkfromhome.Inbothsituations,asecuremeansofaccessingthecorporatenetworkremotelymustbeprovided.Discussthefourmaintunnelingprotocolsusedtoprovidevirtualprivatenetworkaccessbetweenremoteusersandtheircorporatenetwork.
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