CCNA_3_UPD (1130970), страница 3
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Refer to the exhibit. All switches in the network have empty MAC tables.STP has been disabled on the switches in the network. How will a broadcastframe that is sent by host PC1 be handled on the network?Switch SW1 will block the broadcast and drop the frame.Switch SW1 will forward the broadcast out all switch ports, except the originatingport. This will generate an endless loop in the network.Switch SW1 will forward the broadcast out all switch ports, except the originatingport. All hosts in the network will replay with a unicast frame sent to host PC1.Switch SW1 will forward the traffic out all switch ports except the originating port asa unicast frame. All hosts in the network will replay with a unicast frame sent toswitch SW1.6.
Which two items are true regarding the spanning-tree portfastcommand? (Choose two.)PortFast is Cisco proprietary.PortFast can negatively effect DHCP services.PortFast is used to more quickly prevent and eliminate bridging loops.Enabling PortFast on trunks that connect to other switches improves convergence.If an access port is configured with PortFast, it immediately transitions from ablocking to a forwarding state.7. Refer to the exhibit. Server sends an ARP request for the MAC address ofits default gateway.
If STP is not enabled, what will be the result of thisARP request?Router_1 will drop the broadcast and reply with the MAC address of the next hoprouter.Switch_A will reply with the MAC address of the Router_1 E0 interface.Switch_A and Switch_B will continuously flood the message onto the network.The message will cycle around the network until its TTL is exceeded.8.
What is the first step in the process of convergence in a spanning treetopology?election of the root bridgeblocking of the non-designated portsselection of the designated trunk portdetermination of the designated port for each segment9. How can a network administrator influence which STP switch becomesthe root bridge?Configure all the interfaces on the switch as the static root ports.Стр. 6 из 1701.04.2009 0:46CISCO CCNA Certifications: CCNA 3 UPDATEDfile:///D:/botalka/%D1%81%D0%B8%D1%81%D1%8C%D0%BA...Change the BPDU to a lower value than that of the other switches in the network.Assign a lower IP address to the switch than that of the other switches in thenetwork.Set the switch priority to a smaller value than that of the other switches in thenetwork.10.
Refer to the exhibit. The spanning-tree port priority of each interface isat the default setting. The network administrator enters the spanning-treevlan 1 root primary command on S4. What is the effect of the command?Spanning tree blocks Gi0/1 on S3.Gi0/2 on S3 transitions to a root port.Port priority makes Gi0/2 on S1 a root port.S4 is already the root bridge, so there are no port changes.11. What two features of the Spanning-Tree Protocol contribute to the timeit takes for a switched network to converge after a topology change occurs?(Choose two.)the max-age timerthe spanning-tree hold down timerthe forward delaythe spanning-tree path costthe blocking delay12. In which STP state does a port record MAC addresses but not forwarduser data?blockingLearningdisablinglisteningforwarding13. Which three statements are accurate regarding RSTP and STP? (Choosethree.)RSTP uses a faster algorithm to determine root ports.RSTP introduced the extended system ID to allow for more than 4096 VLANs.Both RSTP and STP use the portfast command to allow ports to immediatelytransition to forwarding state.Like STP PortFast, an RSTP edge port that receives a BPDU loses its edge port statusimmediately and becomes a normal spanning-tree port.Configuration commands to establish primary and secondary root bridges areidentical for STP and RSTP.Because of the format of the BPDU packet, RSTP is backward compatible with STP.14.
What two elements will exist in a converged network with one spanningtree? (Choose two.)one root bridge per networkall non-designated ports forwardingone root port per non-root bridgemultiple designated ports per segmentone designated port per network15. Which statement or set of paired statements correctly compares STPwith RSTP?STP and RSTP use the same BPDU format.STP specifies backup ports. RSTP has only root ports, alternate ports, anddesignated ports.STP port states are independent of port roles. RSTP ties together the port state andport role.STP waits for the network to converge before placing ports into forwarding state.RSTP places alternate ports into forwarding state immediately.16.
Refer to the exhibit. What can be determined from the output shown?Two hosts communicating between ports Fa0/2 and Fa0/4 have a cost of 38.The priority was statically configured to identify the root.STP is disabled on this switch.The timers have been altered to reduce convergence time.17.
Which two criteria does a switch use to select the root bridge? (Choosetwo.)bridge priorityswitching speednumber of portsbase MAC addressswitch locationmemory size18. What three link types have been defined for Rapid Spanning-TreeProtocol? (Choose three.)Sharedend-to-endedge-typeboundary-typepoint-to-manypoint-to-point19. What Rapid Spanning Tree Protocol (RSTP) role is assigned to theforwarding port elected for every switched Ethernet LAN segment?Стр. 7 из 1701.04.2009 0:46CISCO CCNA Certifications: CCNA 3 UPDATEDfile:///D:/botalka/%D1%81%D0%B8%D1%81%D1%8C%D0%BA...alternatebackupDesignatedroot20.
When PVST+ was developed, the Bridge ID was modified to includewhich information?bridge priorityMAC addressprotocolVLAN IDcomments (0)TOP05:32CCNA 3:Module 4POSTED BY ADMINOptions With Highlight Colours are Correct Answer1. Refer to the exhibit. The switches in the exhibit are connected withtrunks within the same VTP management domain.
Each switch is labeledwith its VTP mode. A new VLAN is added to Switch3. This VLAN does notshow up on the other switches. What is the reason for this?VLANs cannot be created on transparent mode switches.Transparent mode switches do not forward VTP advertisements.VLANs created on transparent mode switches are not included in VTPadvertisements.Server mode switches neither listen to nor forward VTP messages from transparentmode switches.2. Which two statements are true about the implementation of VTP?(Choose two.)Switches must be connected via trunks.The VTP domain name is case sensitive.Transparent mode switches cannot be configured with new VLANs.The VTP password is mandatory and case sensitive.Switches that use VTP must have the same switch name.3.
Which two statements describe VTP transparent mode operation?(Choose two.)Transparent mode switches can create VLAN management information.Transparent mode switches can add VLANs of local significance only.Transparent mode switches pass any VLAN management information that theyreceive to other switches.Transparent mode switches can adopt VLAN management changes that are receivedfrom other switches.Transparent mode switches originate updates about the status of their VLANS andinform other switches about that status.4. Which three VTP parameters must be identical on all switches toparticipate in the same VTP domain? (Choose three.)revision numberdomain namepruningmodedomain passwordversion number5.
What causes a VTP configured switch to issue a summary advertisement?A five-minute update timer has elapsed.A port on the switch has been shutdown.The switch is changed to the transparent mode.A new host has been attached to a switch in the management domain.6. Refer to the exhibit. Switches SW1 and SW2 are interconnected via atrunk link but failed to exchange VLAN information. The networkadministrator issued the show vtp status command to troubleshoot theproblem. On the basis of the provided command output, what could be doneto correct the problem?Switch SW2 must be configured as a VTP client.The switches must be interconnected via an access link.The switches must be configured with the same VTP domain name.Both switches must be configured with the same VTP revision number.7.
Refer to the exhibit. Which two facts can be confirmed by this output?(Choose two.)If this switch is added to an established network, the other VTP-enabled switches inthe same VTP domain will consider their own VLAN information to be more recentthan the VLAN information advertised by this switch.This switch shows no configuration revision errors.This switch has established two-way communication with the neighboring devices.This switch is configured to advertise its VLAN configuration to other VTP-enabledswitches in the same VTP domain.This switch is configured to allows the network manager to maximize bandwidth byrestricting traffic to specific network devices.8. Refer to the exhibit.
Switch S1 is in VTP server mode. Switches S2 and S3are in client mode. An administrator accidentally disconnects the cable fromF0/1 on S2. What will the effect be on S2?S2 will automatically transition to VTP transparent mode.Стр. 8 из 1701.04.2009 0:46CISCO CCNA Certifications: CCNA 3 UPDATEDfile:///D:/botalka/%D1%81%D0%B8%D1%81%D1%8C%D0%BA...S2 will remove all VLANs from the VLAN database until the cable is reconnected.S2 will retain the VLANs as of the latest known revision, but will lose the VLANs if itis reloaded.S2 will automatically send a VTP request advertisement to 172.17.99.11 when thecable is reconnected.9. Refer to the exhibit.
What information can be learned from the outputprovided?It verifies the configured VTP password.It verifies the VTP domain is configured to use VTP version 2.It verifies VTP advertisements are being exchanged.It verifies the VTP domain name is V1.10. How are VTP messages sent between switches in a domain?Layer 2 broadcastLayer 2 multicastLayer 2 unicastLayer 3 broadcastLayer 3 multicastLayer 3 unicast11. What statement describes the default propagation of VLANs on atrunked link?only VLAN 1all VLANsno VLANsthe native VLAN12. Which two statements are true about VTP pruning? (Choose two.)Pruning is enabled by default.Pruning can only be configured on VTP servers.Pruning must be configured on all VTP servers in the domain.VLANs on VTP client-mode switches will not be pruned.Pruning will prevent unnecessary flooding of broadcasts across trunks.13.
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