WGUl D415l Objectivel Assessmentl (Latestl
2026l Update)l Softwarel Definedl
Networkingl Guide|l 100%l Verifiedl
Questionsl &l Answersl |l Gradel A
Q:l Virtuall Network
Answer:
al mappingl ofl thel entirel orl subsetl ofl networkingl resourcesl tol al specificl protocoll layer.
Q:l Networkl Virtualizationl (NV)
Answer:
Definedl byl thel abilityl tol createl logical,l virtuall networksl thatl arel decoupledl froml thel
underlyingl networkl hardwarel tol ensurel thel networkl canl betterl integratel withl andl
supportl increasinglyl virtuall environments.
Q:l Twol mostl commonl formsl ofl NVs
Answer:
Protocol-basedl virtuall networks
Virtuall networksl thatl arel basedl onl virtuall devices
Q:l Virtuall Privatel Networksl (VPNs)
Answer:
protocol-basedl virtuall networksl usuallyl builtl onl tunnelingl protocols,l whichl consistsl ofl
multiplel remotel end-pointsl (typicallyl routers,l VPNl gatewaysl ofl softwarel clients)l joinedl
byl somel sortl ofl tunnell overl anotherl network,l usuallyl al third-partyl netl work.
,Q:l Virtuall LANsl (VLANs)
Answer:
Protocol-basedl virtuall networksl thatl arel logicall locall areal networksl (LANs)l basedl onl
physicall LANs
Q:l Virtuall Privatel LANl Servicesl (VPLS)
Answer:
Al specificl typel ofl Multipointl VPNl thatl isl dividedl intol Transl parentl LANl Servicesl
(TLS)l andl Ethernetl Virtuall Connectionl Services.
Q:l Virtualization
Answer:
Refersl tol thel actl ofl creatingl al virtuall (ratherl thanl actual)l versionl ofl something,l
includingl virtuall computerl hardwarel platforms,l storagel devices,l andl computerl networkl
resources.
Q:l Replication
Answer:
Tol createl multiplel instancesl ofl thel resource
Q:l Isolation
Answer:
Tol separatel thel usesl whichl clientsl makel ofl thel underlyingl resources
Q:l Overlayl network
,Answer:
Itl describesl al computerl networkl thatl isl builtl onl topl ofl anotherl network.
Q:l Virtuall Networkl Embeddingl (VNE)l problem
Answer:
Howl tol optimallyl allocatel virtuall networksl andl theirl associatedl networkingl resources.
Q:l hub
Answer:
al physical-layerl devicel wherel al framel isl passedl alongl orl broadcastl tol everyl onel ofl itsl
ports.l Itl doesl notl matterl thatl thel framel isl onlyl destinedl forl onel port.
Q:l switch
Answer:
Responsiblel forl connectingl severall networkl linksl tol eachl other,l creatingl al Locall Areal
Networkl (LAN).
al data-linkl layerl devicel thatl keepsl al recordl ofl thel MACl addressesl ofl alll thel devicesl
connectedl tol itl andl withl thisl informationl itl canl identifyl whichl systeml isl sittingl onl
whichl port.l Asl thel result,l whenl al framel isl received,l itl knowsl exactlyl whichl portl tol
sendl thel framel to,l withoutl significantlyl increasingl networkl responsel times.
Q:l bridge
Answer:
Al devicel thatl separatesl twol orl morel networkl segmentsl withinl onel logicall network.
Q:l Openl vSwitchl (OVS)
Answer:
, Al multi-layerl softwarel switchl licensedl underl thel openl sourcel Apachel 2l license.
Q:l Linuxl bridge
Answer:
Al nativel functionl onl Linuxl kernell withl layer-2l capabilities,l whichl canl bel consideredl asl
anl Ethernetl Hub
Q:l OpenFlow
Answer:
Allowsl al controllerl tol add,l remove,l update,l monitor,l andl obtainl statisticsl onl flowl tablesl
andl theirl flows,l asl welll asl tol divertl selectedl packetsl tol thel controllerl andl tol injectl
packetsl froml thel controllerl intol thel switch.
Q:l L2TPl (Layerl 2l Tunnelingl Protocol)
Answer:
al tunnelingl protocoll usedl tol supportl VPNsl orl asl partl ofl thel deliveryl ofl servicesl byl
ISPs.l Itl doesl notl providel anyl encryptionl orl confidentialityl byl itself.l Rather,l itl reliesl onl
anl encryptionl protocoll thatl itl passesl withinl thel tunnell tol providel privacy.
Q:l PPPl (Point-to-Pointl Protocol)
Answer:
Al datal linkl (layerl 2)l protocoll usedl tol establishl al directl connectionl betweenl twol nodes.l
Itl connectsl twol routersl directlyl withoutl anyl hostl orl anyl otherl networkingl devicel inl
between.l Itl canl providel connectionl authentication,l transmissionl encryption,l andl
compression.
Q:l VXLANl (Virtuall Extensiblel LAN)
Answer:
2026l Update)l Softwarel Definedl
Networkingl Guide|l 100%l Verifiedl
Questionsl &l Answersl |l Gradel A
Q:l Virtuall Network
Answer:
al mappingl ofl thel entirel orl subsetl ofl networkingl resourcesl tol al specificl protocoll layer.
Q:l Networkl Virtualizationl (NV)
Answer:
Definedl byl thel abilityl tol createl logical,l virtuall networksl thatl arel decoupledl froml thel
underlyingl networkl hardwarel tol ensurel thel networkl canl betterl integratel withl andl
supportl increasinglyl virtuall environments.
Q:l Twol mostl commonl formsl ofl NVs
Answer:
Protocol-basedl virtuall networks
Virtuall networksl thatl arel basedl onl virtuall devices
Q:l Virtuall Privatel Networksl (VPNs)
Answer:
protocol-basedl virtuall networksl usuallyl builtl onl tunnelingl protocols,l whichl consistsl ofl
multiplel remotel end-pointsl (typicallyl routers,l VPNl gatewaysl ofl softwarel clients)l joinedl
byl somel sortl ofl tunnell overl anotherl network,l usuallyl al third-partyl netl work.
,Q:l Virtuall LANsl (VLANs)
Answer:
Protocol-basedl virtuall networksl thatl arel logicall locall areal networksl (LANs)l basedl onl
physicall LANs
Q:l Virtuall Privatel LANl Servicesl (VPLS)
Answer:
Al specificl typel ofl Multipointl VPNl thatl isl dividedl intol Transl parentl LANl Servicesl
(TLS)l andl Ethernetl Virtuall Connectionl Services.
Q:l Virtualization
Answer:
Refersl tol thel actl ofl creatingl al virtuall (ratherl thanl actual)l versionl ofl something,l
includingl virtuall computerl hardwarel platforms,l storagel devices,l andl computerl networkl
resources.
Q:l Replication
Answer:
Tol createl multiplel instancesl ofl thel resource
Q:l Isolation
Answer:
Tol separatel thel usesl whichl clientsl makel ofl thel underlyingl resources
Q:l Overlayl network
,Answer:
Itl describesl al computerl networkl thatl isl builtl onl topl ofl anotherl network.
Q:l Virtuall Networkl Embeddingl (VNE)l problem
Answer:
Howl tol optimallyl allocatel virtuall networksl andl theirl associatedl networkingl resources.
Q:l hub
Answer:
al physical-layerl devicel wherel al framel isl passedl alongl orl broadcastl tol everyl onel ofl itsl
ports.l Itl doesl notl matterl thatl thel framel isl onlyl destinedl forl onel port.
Q:l switch
Answer:
Responsiblel forl connectingl severall networkl linksl tol eachl other,l creatingl al Locall Areal
Networkl (LAN).
al data-linkl layerl devicel thatl keepsl al recordl ofl thel MACl addressesl ofl alll thel devicesl
connectedl tol itl andl withl thisl informationl itl canl identifyl whichl systeml isl sittingl onl
whichl port.l Asl thel result,l whenl al framel isl received,l itl knowsl exactlyl whichl portl tol
sendl thel framel to,l withoutl significantlyl increasingl networkl responsel times.
Q:l bridge
Answer:
Al devicel thatl separatesl twol orl morel networkl segmentsl withinl onel logicall network.
Q:l Openl vSwitchl (OVS)
Answer:
, Al multi-layerl softwarel switchl licensedl underl thel openl sourcel Apachel 2l license.
Q:l Linuxl bridge
Answer:
Al nativel functionl onl Linuxl kernell withl layer-2l capabilities,l whichl canl bel consideredl asl
anl Ethernetl Hub
Q:l OpenFlow
Answer:
Allowsl al controllerl tol add,l remove,l update,l monitor,l andl obtainl statisticsl onl flowl tablesl
andl theirl flows,l asl welll asl tol divertl selectedl packetsl tol thel controllerl andl tol injectl
packetsl froml thel controllerl intol thel switch.
Q:l L2TPl (Layerl 2l Tunnelingl Protocol)
Answer:
al tunnelingl protocoll usedl tol supportl VPNsl orl asl partl ofl thel deliveryl ofl servicesl byl
ISPs.l Itl doesl notl providel anyl encryptionl orl confidentialityl byl itself.l Rather,l itl reliesl onl
anl encryptionl protocoll thatl itl passesl withinl thel tunnell tol providel privacy.
Q:l PPPl (Point-to-Pointl Protocol)
Answer:
Al datal linkl (layerl 2)l protocoll usedl tol establishl al directl connectionl betweenl twol nodes.l
Itl connectsl twol routersl directlyl withoutl anyl hostl orl anyl otherl networkingl devicel inl
between.l Itl canl providel connectionl authentication,l transmissionl encryption,l andl
compression.
Q:l VXLANl (Virtuall Extensiblel LAN)
Answer:
