Practice Quiz SeriesVLAN & 802.1QFull nameEmail addressGenderSelectMaleFemaleOtherPrefer not to sayCurrent statusSelectSchool studentCollege studentWorking professionalJob seekerTeacher/TrainerOther I agree that my details and score may be stored for quiz administration.Start QuizQuestion 1 of 25VLAN & 802.1QMedium1 mark(s)1. Which statements correctly describe switched virtual interfaces (SVIs) on a multilayer switch?Select all correct answers.Multiple SVIs can support inter-VLAN routing when Layer 3 forwarding is enabledAn SVI is a physical copper cableAn SVI can serve as the default gateway for hosts in its VLANAn SVI can provide a Layer 3 interface for a VLANAn SVI replaces the VLAN ID in every Ethernet frameVLAN & 802.1QEasy1 mark(s)2. Which statements correctly describe a VLAN?Select all correct answers.Devices in different VLANs normally require Layer 3 forwarding to communicateVLANs can segment devices using the same physical switching infrastructureA VLAN automatically encrypts all Ethernet trafficA VLAN creates a logical Layer 2 broadcast domainEvery VLAN must use the same IPv4 subnetVLAN & 802.1QMedium1 mark(s)3. PC-A is in VLAN 10 and PC-B is in VLAN 20. Which statements are normally correct?Select all correct answers.They belong to different Layer 2 broadcast domainsThey must use identical IP addresses to communicateA Layer 2 switch automatically bridges all traffic between VLAN 10 and VLAN 20Their default gateways can be Layer 3 interfaces associated with their respective VLANsThey normally require Layer 3 routing to communicateVLAN & 802.1QEasy1 mark(s)4. Which statements correctly describe an access port?Select all correct answers.It must carry every VLAN configured on the switchIt can never connect an IP phoneIt commonly connects an endpoint such as a PCOrdinary endpoint frames are typically untagged on the access linkIt normally belongs to one access VLANVLAN & 802.1QMedium1 mark(s)5. Which symptoms can indicate that an endpoint is assigned to the wrong access VLAN?Select all correct answers.It appears in an unexpected Layer 2 broadcast domainThe endpoint always receives an 802.1Q tag from a normal access portDNS automatically changes the switch access VLAN to fix itIt cannot reach the expected same-VLAN neighborsARP for the expected default gateway may failVLAN & 802.1QMedium1 mark(s)6. Which statements correctly describe allowed VLANs on a trunk?Select all correct answers.Restricting allowed VLANs can reduce unnecessary VLAN propagationA trunk can be configured to permit only selected VLANsRemoving a VLAN from the allowed list can stop that VLAN from crossing the trunkThe allowed list changes the IPv4 address of every endpointEvery trunk must carry all possible VLAN IDsVLAN & 802.1QEasy1 mark(s)7. Which statements correctly describe an IEEE 802.1Q trunk?Select all correct answers.It replaces Ethernet MAC addresses with IP addressesIt uses VLAN identification to distinguish tagged trafficIt commonly connects VLAN-aware switches, routers, firewalls, or serversIt can carry only one VLAN by definitionIt can carry multiple VLANs over one physical linkVLAN & 802.1QMedium1 mark(s)8. Which statements correctly describe router-on-a-stick?Select all correct answers.A router can use one physical Ethernet interface with multiple logical subinterfacesIt eliminates 802.1Q taggingEach router subinterface can represent a different VLAN and Layer 3 gatewayIt requires one physical router interface for every VLANThe switch-to-router link normally operates as an 802.1Q trunkVLAN & 802.1QMedium1 mark(s)9. Two switches must carry VLANs 10, 20, and 30 over one inter-switch link. Which conditions are normally required?Select all correct answers.The link should operate as an appropriate trunkBoth ends must be configured as access ports in VLAN 10VLANs 10, 20, and 30 should be allowed across the trunk as requiredAll three VLANs must share one IP subnetThe required VLANs should exist and be active where neededVLAN & 802.1QMedium1 mark(s)10. Which statements correctly describe VLAN IDs and IP subnets?Select all correct answers.An IP subnet is a Layer 3 conceptA VLAN is a Layer 2 conceptA common design maps one IP subnet to one VLANVLAN 10 must always use 10.0.0.0/8The VLAN ID automatically determines the IPv4 subnet maskVLAN & 802.1QHard1 mark(s)11. Which observations can help identify an 802.1Q tagging problem in a packet capture?Select all correct answers.A TCP application uses a high source portFrames expected to be tagged appearing untagged on a trunk capture pointUnexpected VLAN IDs in tagged framesA DNS A record contains the wrong IPv4 addressTraffic for the affected VLAN appearing with the wrong VLAN identifierVLAN & 802.1QEasy1 mark(s)12. Which statements correctly describe inter-VLAN routing?Select all correct answers.It provides Layer 3 communication between different VLANsIt can be performed by a routerIt merges all VLANs into one Layer 2 broadcast domainIt requires every endpoint to use the same subnet mask and network addressIt can be performed by a multilayer switchVLAN & 802.1QMedium1 mark(s)13. Which statements about the 802.1Q VLAN Identifier are correct?Select all correct answers.VLAN ID 0 has a special priority-tagging meaningThe VLAN ID field is 12 bitsVLAN IDs 1 through 4094 are generally usable for normal VLAN identificationAll 4096 possible 12-bit values are ordinary user VLAN IDsA VLAN ID is a 32-bit IPv4 addressVLAN & 802.1QMedium1 mark(s)14. Which problems can result from a native VLAN mismatch?Select all correct answers.It automatically converts the trunk to a routed interfaceThe mismatch can introduce security concernsConnectivity can behave unexpectedlyTraffic can be placed into different VLANs at opposite ends of the trunkIt guarantees all tagged VLANs stop workingVLAN & 802.1QMedium1 mark(s)15. Which statements about the IEEE 802.1Q tag are correct?Select all correct answers.It contains VLAN identification informationIt adds four bytes to the Ethernet frameIt stores the TCP destination portIt allows VLAN-aware devices to distinguish tagged VLAN trafficIt replaces the source MAC addressVLAN & 802.1QEasy1 mark(s)16. Which are common reasons for deploying VLANs?Select all correct answers.Automatically authenticate every endpointLimit Layer 2 broadcast scopeProvide logical segmentation independent of some physical topology constraintsEliminate the need for routing between all networksSeparate user, server, voice, or management networksVLAN & 802.1QHard1 mark(s)17. A host in VLAN 20 can reach other VLAN 20 hosts but cannot reach VLAN 30. Which areas should be checked?Select all correct answers.Default gateway configurationReplace every access switch because same-VLAN traffic succeedsWhether local VLAN 20 switching works, which already appears to be functioningInter-VLAN routing configurationLayer 3 ACL or firewall policy between VLANsVLAN & 802.1QHard1 mark(s)18. Which conditions can prevent only VLAN 30 from working across a trunk while VLANs 10 and 20 work?Select all correct answers.A VLAN-specific spanning-tree or forwarding condition affects VLAN 30The DNS server must be responsible because other VLANs workVLAN 30 is missing from the trunk's allowed VLAN listThe entire physical trunk must be down because one VLAN failsVLAN 30 is absent or inactive on one of the relevant switchesVLAN & 802.1QEasy1 mark(s)19. Which statements about broadcast traffic and VLANs are correct?Select all correct answers.Every Ethernet broadcast automatically crosses a router802.1Q combines all VLAN broadcasts into one broadcast domainA broadcast in VLAN 10 is not normally switched directly into VLAN 20Different VLANs represent different Layer 2 broadcast domainsA Layer 2 broadcast is normally flooded within its VLANVLAN & 802.1QHard1 mark(s)20. Which checks are useful when troubleshooting VLAN and trunk connectivity?Select all correct answers.Verify endpoint access VLAN assignmentsIgnore MAC learning and Layer 3 gateway configuration in all casesCheck native-VLAN consistencyConfirm required VLANs exist and are activeVerify trunk status and allowed VLANsVLAN & 802.1QMedium1 mark(s)21. Which statements about trunk links and MAC learning are correct?Select all correct answers.A switch can learn source MAC addresses received over a trunkMAC-table entries are normally associated with VLAN contextMAC addresses are replaced by VLAN IDs on trunk linksA trunk disables MAC learningThe same trunk can carry MAC learning information for multiple VLANsVLAN & 802.1QMedium1 mark(s)22. Which statements correctly describe a native VLAN on a conventional 802.1Q trunk?Select all correct answers.The native VLAN automatically encrypts untagged framesBoth trunk endpoints should normally use consistent native-VLAN configurationOnly VLAN 1 can ever be the native VLANNative-VLAN traffic is commonly transmitted untagged by defaultA native-VLAN mismatch can create connectivity or security concernsVLAN & 802.1QHard1 mark(s)23. Which practices can improve trunk configuration security and manageability?Select all correct answers.Use an intentional native-VLAN designAssume native-VLAN mismatches are harmlessPermit every VLAN everywhere regardless of needAvoid leaving unnecessary trunking enabled on endpoint-facing portsAllow only VLANs that are actually requiredVLAN & 802.1QMedium1 mark(s)24. Which statements correctly describe VLAN tagging across access and trunk links?Select all correct answers.A trunk can add or carry VLAN tags for VLAN identificationAn endpoint on a typical access port normally sends untagged Ethernet framesEvery endpoint must understand 802.1Q tags to use an access portAccess VLAN membership is determined by DNSThe access switch associates those frames with the configured access VLANVLAN & 802.1QMedium1 mark(s)25. Which statements summarize VLAN, trunking, and inter-VLAN routing correctly?Select all correct answers.VLANs create separate Layer 2 broadcast domainsAll VLANs on a trunk automatically become one IP subnet802.1Q trunks can transport multiple VLANs over a shared linkInter-VLAN communication normally requires Layer 3 forwardingThe native VLAN and allowed-VLAN configuration can affect trunk behaviorPreviousNextSubmit Quiz Related Discover more from SanchitGurukul Subscribe to get the latest posts sent to your email. 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