ccnp模拟试题与答案.doc

C i s c o C C N P 8 4 2 - 8 1 3 e x a mQuestion:1uses layer 3 switches in the Core of their network. Which method of Layer 3 switching uses a forwarding information base (FIB)A. Topology-based switchingB. Demand-based switchingC. Route cachingD. Flow-based switchingE. None of the other alternatives apply Answer: AQuestion:2You need to design the VLAN scheme for the network. Which two statements are true about best practices in VLAN design (Select two)A. Routing should occur at the access layer if voice VLANs are utilized. Otherwise, routing should occur at the distribution layer.B. Routing should always be performed at the distribution layer.C. VLANs should be localized to a switch.D. VLANs should be localized to a single switch unless voice VLANs are being utilized.E. Routing should not be performed between VLANs located on separate switches. Answer: B, CQuestion:3If you needed to transport traffic coming from multiple VLANs (connected between switches), and your CTO was insistent on using an open standard, which protocol would you useA.B. spanning-treeC.C. ISLD. VTPF.Answer: CQuestion:4Under what circumstances should an administrator prefer local VLANs over end-to-end VLANsA. Eighty percent of traffic on the network is destined for Internet sites.B. There are common sets of traffic filtering requirements for workgroups located in multiple buildings.C. Eighty percent of a workgroups traffic is to the workgroup s own local server.D. Users are grouped into VLANs independent of physical location.E. None of the other alternatives apply Answer: AQuestion:5What are some virtues of implementing end-to-end VLANs (Choose two)A. End-to-end VLANs are easy to manage.B. Users are grouped into VLANs independent of a physical location.C. Each VLAN has a common set of security and resource requirements for all members.D. Resources are restricted to a single location. Answer: B, CQuestion:6Which of the following statements is true about the 80/20 rule (Select all that apply)A. 20 percent of the traffic on a network segment should be localB. no more than 20 percent of the network traffic should be able to move across a backbone.C. no more than 80 percent of the network traffic should be able to move across a backbone.D. 80 percent of the traffic on a network segment should be local Answer: B, DQuestion:7The LAN is becoming saturated with broadcasts and multicast traffic. What could you do to help a network with many multicasts and broadcastsA. Creating smaller broadcast domains by implementing VLANs.B. Separate nodes into different hubs.C. Creating larger broadcast domains by implementing VLANs.D. Separate nodes into different switches.E. All of the above. Answer: A Question:8The LAN switches are being configured to support the use of Dynamic VLANs.Which of the following are true of dynamic VLAN membership (Select all that apply)A. VLAN membership of a user always remains the same even when he/she is moved to another location.B. VLAN membership of a user always changes when he/she is moved to another location.C. Membership can be static or dynamic.D. Membership can be static only.E. None of the other alternatives apply. Answer: A, CQuestion:9The LAN switches are being configured to support the use of Dynamic VLANs.What should be considered when implementing a dynamic VLAN solution (Select two)A. Each switch port is assigned to a specific VLAN.B. Dynamic VLANs require a VLAN Membership Policy Server.C. Devices are in the same VLAN regardless of which port they attach to.D. Dynamic VLAN assignments are made through the command line interface. Answer: B, C Question:10In the three-layer hierarchical network design model; what s associated with the access layer (Select two)A. optimized transport structureB. high port densityC. boundary definitionD. data encryptionE. local VLANsF. route summaries Answer: B, EQuestion:11You are assigning VLANs to the ports of switch PG1. What VLAN number value is an assigned to the default VLANA. VLAN 1003B. VLAN 1C. VLAN OND. VLAN AE. VLAN 0Answer: BQuestion:12The VLANs in switch PG1 are being modified. Which of the following are updated in PG1 every time a VLAN is modified (Select all that apply)A. Configuration revision numberB. Configuration revision flag fieldC. Configuration revision reset switchD. Configuration revision databaseE. None of the other alternatives apply. Answer: A, DQuestion:13What is a characteristic of assigning a static VLAN membershipA. VMPS server lookup is requiredB. Easy to configureC. Easy of adds, moves, and changesD. Based on MAC address of the connected device Answer: BQuestion:14Static VLANs are being used on the network. What is true about static VLANsA. Devices use DHCP to request their VLAN.B. Attached devices are unaware of any VLANs.C. Devices are assigned to VLANs based on their MAC addresses.D. Devices are in the same VLAN regardless of which port they attach to. Answer: BQuestion:15Two switches are connected via a trunk using VTP. Which VTP information does a Catalyst switch advertise on its trunk ports when using VTP (Select two)A. STP root statusB. VTP modeC. Negotiation statusD. Management domainE. Configuration revision number Answer: D, EQuestion:16You need to investigate a VTP problem between two switches. The lack of whichtwo prevents VTP information from propagating between switches (Select two)A. A root VTP serverB. A trunk portC. VTP priorityD. VLAN 1E. None of the other alternatives apply Answer: B, DQuestion:17PG1 and PG2 are switches that communicate via VTP. What is the default VTP advertisement intervals in Catalyst switches that are in server or client modeA. 30 secondsB. 5 minutesC. 1 minuteD. 10 secondsE. 5 secondsF. None of the other alternatives apply Answer: BQuestion:18You want to configure switch PG1 to propagate VLAN information across the network using VTP. What must be configured on a Cisco switch in order to advertise VLAN informationA. VTP modeB. VTP passwordC. VTP revision numberD. VTP pruningE. VTP domain nameF. None of the other alternatives apply Answer: EQuestion:19The switches have all been upgraded to use VTP version 2. What are two benefits provided in VTP Version 2 that are not available in VTP Version 1 (Select two)A. VTP version 2 supports Token Ring VLANsB. VTP version 2 allows VLAN consistency checksC. VTP version 2 allows active redundant links when used with spanning treeD. VTP version 2 reduces the amount of configuration necessaryE. VTP version 2 saves VLAN configuration memory Answer: A, BQuestion:20The network administrator needs to enable VTP pruning within thenetwork. What action should a network administrator take to enable VTP pruning on an entire management domainA. Enable VTP pruning on any switch in the management domainB. Enable VTP pruning on any client switch in the domainC. Enable VTP pruning on a VTP server in the management domainD. Enable VTP pruning on every switch in the domainE. None of the other alternatives applyAnswer: CQuestion:21VTP is configured on switch PG1. Which of the following features were added in VTP version2 that were not previously supported in VTP version 1 (Select two)A. Supports Token Ring VLANs.B. Allows VLAN consistency checks.C. Saves VLAN configuration memory.D. Reduces the amount of configuration necessary.E. Allows active redundant links when used with spanning tree.Answer: A, BQuestion:22The switches are configured to use VTP. What s true about the VLAN trunkingprotocol (VTP) (Select two)A. VTP messages will not be forwarded over nontrunk links.B. VTP domain names need to be identical. However, case doesn t matter.C. A VTP enabled device which receives multiple advertisements will ignore advertisements with higher configuration revision numbers.D. A device in“ transparent m”odVeTwPill not forward VTP messages.E. VTP pruning allows switches to prune VLANs that do not have any active ports associated with them.Answer: A, DQuestion:23Switch PG1 and PG2 both belong to the VTP domain. What s true about the switch operation in VTP domains (Select all that apply)A. A switch can only reside in one management domainB. A switch is listening to VTP advertisements from their own domain onlyC. A switch is listening to VTP advertisements from multi domainsD. A switch can reside in one or more domainsE. VTP is no longer supported on Catalyst switchesAnswer: A, BQuestion:24VTP devices in a network track the VTP revision number. What is a VTP configuration revision numberA. A number for identifying changes to the network switch.B. A number for identifying changes to the network router.C. A number for identifying changes to the network topology.D. None of the other alternatives apply.Answer: CQuestion:25Switch PG1 is configured to use the VLAN Trunking Protocol (VTP). What does PG1 advertise in its VTP domainA. The VLAN ID of all known VLANs, the management domain name, and the total number oftrunk links on the switch.B. The VLAN ID of all known VLANs, a 1-bit canonical format (CF1 Indicator), and the switch configuration revision number.C. The management domain name, the switch configuration revision number, the known VLANs, and their specific parameters.D. A 2-byte TPID with a fixed value of 0x8100 for the management domain number, the switch configuration revision number, the known VLANs, and their specific parameters.E. None of the other alternatives apply.Answer: C Question:26VTP switches use advertisements to exchange information with each other. Which of the following advertisement types are associated with VTP (Select all that apply)A. Domain advertisementsB. Advertisement requests from clientsC. Subset advertisementsD. Summary advertisements Answer: B, C, D Question:27 Switch PG1 is part of the VTP domain. What s true of VTP Pruning within this domain (Select all that apply)A. It does not prune traffic from VLANs that are pruning-ineligibleB. VLAN 1 is always pruning-eligibleC. it will prune traffic from VLANs that are pruning-ineligibleD. VLAN 2 is always pruning-ineligibleE. None of the other alternatives apply. Answer: AQuestion:28What action should you execute if you wanted to enable VTP pruning on your entire management domainA. Enable VTP pruning on any client switch in the management domain.B. Enable VTP pruning on any switch in the management domain.C. Enable VTP pruning on every switch in the management domain.D. Enable VTP pruning on a VTP server in the management domain.E. Disable VTP pruning on a VTP server in the management domain. Answer: DQuestion:29Switch PG1 is configured with VTP. Which two VTP modes will make PG1 capable of creating and deleting VLANs on itself (Select two)A. ClientB. ServerC. TransparentD. Pass-throughE. No-negotiate Answer: B, CQuestion:30When the Catalyst switch PG1 is enabled to use VTP, which information does it advertise on its trunk ports (Select two)A. VTP modeB. STP root statusC. Negotiation statusD. Management domainE. Configuration revision numberAnswer: D, EQuestion:31Two switches are connected via a trunk link. In this network, the original frame is encapsulated and an additional header is added before the frame is carried over a trunk link. At the receiving end, the header is removed and the frame is forwarded to the assigned VLAN. This describes which technologyA. DISLB. ISLC. DTPD. IEEEE. MPLSF. None of the other alternatives applyAnswer: BQuestion:32The core switches use trunks to connect to each other. How does trunking keep track of multiple VLANsA. It tags the data frame with VLAN information and recalculates the CRC valueB. It encapsulates the data frame with a new header and frame check sequenceC. It modifies the port index of a data frame to indicate the VLAND. It adds a new header containing the VLAN ID to the data frameE. None of the other alternatives applyAnswer: AQuestion:33The core switches are configured to use trunks. Which three statements are correct with regard to the IEEE standard (Select three)A. The IEEE frame format adds a 4 byte field to a Ethernet frameB. The packet is encapsulated with a 26 byte header and a 4 byte FCSC. The protocol uses point-to-multipoint connectivityD. The protocol uses point-to-point connectivityE. The IEEE frame uses multicast destination of 0x01-00-0c-00-00F. The IEEE frame retains the original MAC destination addressAnswer: A, D, FQuestion:34Switch PG1 has been configured with DTP using the desirable option. Which statement describes Dynamic Trunking Protocol (DTP) desirable modeA. The interface actively attempts to convert the link to a trunk link.B. The interface is put into permanent trunking mode but prevented from generating DTPframes.C. The interface is put into permanent trunking mode and negotiates to convert the link into a trunk link.D. The interface is put into a passive mode, waiting to convert the link to a trunk link.E. None of the other alternatives apply Answer: AQuestion:35You need to configure a new switch for trunking. Which switch command enables a trunking protocol that appends a four byte CRC to the packetA. Switch(config-if)#switchport trunk encapsulation dot1qB. Switch(config-if)#switchport trunk encapsulation itefC. Switch(config-if)#switchport trunk encapsulation fddiD. Switch(config-if)#switchport trunk encapsulation islE. None of the other alternatives apply Answer: DQuestion:36While using a packet analyzer, you notice four additional bytes being added to the packets in the network. Which protocol inserts a four byte tag into the Ethernet frame and recalculates CRC valueA. DTPB. VTPC.C. ISLD. None of the other alternatives apply Answer: CQuestion:37You need to configure a new switch to support DTP. Which DTP switchport mode parameter sets the switch port to actively send and respond to DTP negotiation framesA. AccessB. No negotiateC. TrunkD. Dynamic desirableE. Dynamic autoF. None of the other alternatives apply Answer: DQuestion:38A new switch was just configured using the“ switchport trunk native vlan 7command. What does this interface command accomplishA. Causes the interface to apply ISL framing for traffic on VLAN 7B. Configures the trunking interface to forward traffic from VLAN 7C. Configures the interface to be a trunking port and causes traffic on VLAN 7 to be taggedD. Configures the trunking interface to send traffic from VLAN 7 untaggedE. None of the other alternatives apply Answer: DQuestion:39You need to connect two core switches via an ISL trunk. Which statement is t