Chapter 1 Quiz – Packet Forwarding (Answers) CCNPv 8 Encor PDF

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CCNP Enterprise ENCOR v8...

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1. What are two characteristics of a Layer 2 Ethernet switch access port? (Choose two.)  Access mode is the default operating mode for a port on a Layer 2 switch.  An access port is associated with a single VLAN.  Anaccesspor tuses802. 1Q f r ameenc apsul at i on.  Ac cesspor t sr equi r eanSVIt obeconfigur edont hes wi t ch.  Anat i v eVLANi sconfigur edoneac hac cesspor t . Explanation: Acces smodei st hedef aul tmodef orapor tonaLay er2swi t chandanac cesspor ti s as soci at edwi t has i ngl eVLAN.802. 1Q encaps ul at i onandnat i v eVLANsar ef eat ur esoft r unkpor t s,not acces spor t s .Acces spor t scanoper at ewi t houtanSVIconfi gur edonaLay er2swi t ch. 2. Which packet forwarding process uses ternary content addressable memory (TCAM)?  hardware CEF s of t war eCEF  pr ocesss wi t chi ng  compl expack etf or war di ng Explanation: Sof t war eCEFandpr oces sswi t chi ngus et her out ergener al pur pos eCPUf orpac k et s wi t chi ng.Compl expack etf or war di ngi sper f or medbypr oc esss wi t chi ng. 3. What is a feature of a Cisco switch SVI?  An SVI is configured by setting it as a VLAN interface.  AnSVIi sconfigur edbyv i r t ual i z i ngaspec i fi edphy s i cal swi t chi nt er f ac e.  OneSVIi sas soci at edwi t ht heswi t chnat i v eVLANbydef aul t .  AnSVIi soper at i onal i foneoft hes wi t chi nt er f acesi sass oci at edwi t hanyVLAN. Explanation: ACi s cos wi t chSVI( s wi t chvi r t ual i nt er f ace)i sconfigur edbyset t i ngi tasaVLAN i nt er f aceandbr i ngi ngt hei nt er f aceup.Nat i v eVLANonl yappl i est oswi t c ht r unkpor t s,nott oSVI s. 4. Which Cisco router component performs process switching of packets?  the general-purpose CPU t heASI C t hef or war di ngengi ne t heTCAM Explanation: Thegener al pur poseCPUwi t hi nar out eri susedt oper f or m pr oces ss wi t chi ngof pac k et s .ASI Cs ,f or war di ngengi nes ,andTCAM ar es wi t chi ngandf or war di ngcomponent sofhar dwar e CEF. 5. What is the difference between a routed switch port and a trunk port on a multilayer switch?  A routed port is assigned an IP address.  Ar out eds wi t chpor tf or war dsf r amesi nmul t i pl eVLANs .  At r unkpor tf or war dsLay er3pac k et s .  Ar out edpor tcanbeconnect eddi r ect l yt oswi t c hac cesspor t s . Explanation: Ar out eds wi t chpor ti sas si gnedanI Paddr es s ,connec t edt oar out edpor tonanot her mul t i l ay ers wi t chorar out eri nt er f ace,andi susedt of or war dLay er3pack et s .I ti snotconnect edt oswi t ch acces sort r unkpor t s .Swi t c ht r unkpor t sf or war dLay er2f r amesac r ossmul t i pl eVLANs ,notLay er3 pac k et s . 6. What would be the source of the entries in the ARP table of a particular IPv4 host?  devices that the host has communicated with recently that are on the same IP network segment  al ldev i cest hatt hehos thascommuni c at edwi t hr ecent l y  onl yanent r yf ort hedev i cet hati st henexthopt or eac har emot enet wor k  dev i cest hatt hehos thascommuni cat edwi t hr ecent l yt hatar eonr emot eI Pnet wor ks

Explanation: TheARPt abl eofanI Pv 4hos thasent r i esf ordev i c est hatt hehos thasc ommuni c at ed wi t hr ecent l yt hatar eont hes ameI Pnet wor ks egment .Thi si nc l udest hedev i cet hati st henex thopt o r eachar emot enet wor k.Dev i cest hatar eonr emot eI Pnet wor ksdonothav eent r i esi nt hehos tARP t abl e. 7. Which is the correct description of a native VLAN on a Cisco switch?  the VLAN that contains any untagged network traffic on a trunk port t heVLANt hati sal waysus edt omanaget heswi t ch t heVLANt hati sas si gnedt ot heswi t chSVIbydef aul t t heVLANt hathasaVLANI Dof0 Explanation: AnyVLANcanbeus edast hes wi t chmanagementVLAN.Swi t chSVI scanbeass i gned t oanyVLAN.Ci s coswi t chesdonotsuppor taVLANI Dof0,andt heconceptofanat i v e( unt agged VLAN)onl yappl i est ot r unkpor t sandt r unkl i nks . 8. Which router memory component is used by CEF to make packet forwarding decisions?  forwarding information base r out i ngt abl e l abel i nf or mnat i onbase r out i ngi nf or mat i onbase Explanation: Ci scoCEFusest hef or war di ngi nf or mat i onbas eandt headj ac enc yt abl et omak e s wi t chi ngandf or war di ngdec i s i ons. 9. Where does a Cisco switch store the MAC address table entries?  CAM  TCAM  adj ac encyt abl e r out i ngt abl e. Explanation: CAM ( cont entaddr ess abl ememor y )i shi ghspeedmemor yt hatc ont ai nst heMAC addr es st abl eusedbyaCi s cos wi t cht of or war dEt her netf r ames .TCAM,ar out i ngt abl e,andan adj ac encyt abl ear eus edi nLay er3pac k ets wi t chi ngandf or war di ngpr oces ses . 10. Which CEF component enables multiple actions to be performed in addition to allowing or dropping traffic?  TCAM  CAM  FI B  RI B  adj ac encyt abl e Explanation: Ter nar ycont entaddr es sabl ememor y( TCAM)al l owsf ort hemat c hi ngandev al uat i onofa pac k etonmor et hanonefiel d.Thi smeansi naddi t i ont oal l owi ngordr oppi ngt r affic ,t as kssuc has r edi r ect i ngaflowt oaQoSpol i c er ,ors peci f yi ngapoi nt ert oadi ffer entent r yi nt her out i ngt abl e,ar e pos si bl e. 11. What is a feature of virtual LANs (VLANs)?  Logical segmentation is provided by creating multiple broadcast domains on a single switch.  Asi ngl ecol l i s i ondomai ni senabl edonaswi t cht hati sshar edbet weenVLANs .  Communi cat i onbet weendi ffer entVLANsont heoneswi t chi senabl edbydef aul t .  Swi t chpor tut i l i z at i oni sdecr easedbec auseeac hpor ti sonl yass oci at edwi t honebr oadc ast domai n. Explanation: Vi r t ualLANs( VLANs)pr ov i deal ogi c als egment at i onbyc r eat i ngmul t i pl ebr oadcas t domai nsont hesamenet wor ks wi t ch.VLANspr ov i dehi gherut i l i z at i onofs wi t chpor t sbec auseapor t coul dbeass oci at edt ot heneces sar ybr oadcas tdomai n,andmul t i pl ebr oadc astdomai nscanr es i deon t hes ames wi t ch.Net wor kdev i cesi noneVLANcannotcommuni cat ewi t hdevi cesi nadi ffer entVLAN wi t houtt hei mpl ement at i onofi nt er VLANr out i ng.

12. What are two characteristics of Layer 2 Ethernet trunk ports? (Choose two.)  Trunk ports carry multiple VLANs.  Trunk ports connect a switch to other switches or to other network devices.  Tr unkpor t sens ur et hatbr oadc astcommuni c at i onsar ec ont ai nedwi t hi noneswi t ch.  Tr unkpor t saut omat i c al l yl oadbal ancedat at r afficbet weennet wor kdev i ces .  Tr unkpor t sar eonl yus edt oconnec tt onet wor kenddev i ces . Explanation: Tr unkpor t sar eusedbet weens wi t chesorbet weenas wi t chandanot hernet wor kdev i c e s uchasaser v er ,fir ewal l ,orr out er .Tr unkpor t sdonotcont ai nbr oadcas t st owi t hi noneswi t ch,donotonl y connec tenddev i ces ,anddonotaut omat i cal l yl oadbal anc edat at r afficbet weennet wor kdev i ces ....