ActualTests.Cisco.640-802.Exam.Q.and.A.08.15.08-DDU (1130589), страница 80
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What does the STATUS=ACTIVE refer to in theoutput of the show frame-relay pvc command shown above?A. The PVC is experiencing congestion.B. The Frame Relay switch is correctly programmed with the DLCI and is operational.C. The router is actively broadcasting to establish a link to the Frame Relay switch.Actualtests.com - The Power of Knowing640-802D. The router is connected to the local Frame Relay switch, but not to the far end device.E. None of the aboveAnswer: BExplanation:The Frame Relay switch uses LMI to report the status of configured PVCs. The threepossible PVC states are as follows:Active state - Indicates that the connection is active and that routers can exchange data.This is the state of an operational PVC.Inactive state - Indicates that the local connection to the Frame Relay switch is working,but the remote router connection to the Frame Relay switch is not working.Deleted state - Indicates that no LMI is being received from the Frame Relay switch, orthat there is no service between the CPE router and Frame Relay switch.QUESTION 705:Study the output script and the network topology exhibit below:Certkiller 1# show running-config<some output text omitted>interface serial0/0bandwidth 64ip address 172.16.100.2 255.255.0.0encapsulation frame-relayframe-relay map ip 172.16.100.1 100 broadcastThe Router Certkiller 1 in Hong Kong is connected to the router Certkiller 2 in Tokyovia a new Frame Relay link.
However, Certkiller 1 is unable to communicate withCertkiller 2. Based on the above output, what do you suspect as the underlying causeof this problem?A. Bandwidth configuration incorrectB. IP address not correctC. Improper map statementD. Improper LMI configurationE. None of the aboveAnswer: CExplanation: From looking at the diagram you can see that Hong Kong's DLCI is100, while Tokyo's DLCI is 200.The Frame Relay map command is an interface configuration mode command thatstatically defines a mapping between a network layer address and a DLCI.Actualtests.com - The Power of Knowing640-802Incorrect Answers:A.
The bandwidth statement is not used by the routers at a physical or data link layer, sothis statement will not have any impact on the function of the frame relay circuit.B. We do not know what the IP address of the Tokyo side is, so this can not be assumed.D. The default LMI type is Cisco, and since both routers in this network appear to beCisco's, we can assume that this is acceptable.QUESTION 706:While troubleshooting an issue with your frame relay network, you issue the "showframe pvc" command as shown in the exhibit below:You're a network administrator at a Certkiller branch office, that's connected to thecentral headquarters by means of Frame Relay.
You've been getting complaints thatthe connection has suddenly become slow, so you make the assumption that there'stoo much traffic going through the link.Taking into consideration the above output from the 'show frame relay pvc'command; which command output value is indicating that there's congestionbetween the local router and the corporate site?A. in DE packets 0B. last time PVC status changed 00:25:40C. in BECN packets 192D.
DLCI = 100E. in FECN packets 147Answer: CExplanation:BECN stands for Backward Explicit Congestion Notification. The BECN tells theActualtests.com - The Power of Knowing640-802transmitting device that the Frame Relay network is congested and that it should "backoff" to allow better throughput. BECN and FECN go hand to hand together, but since thequestion specifically asks for what's indicating congestion between the local router andcorporate site, BECN is correct.QUESTION 707:You are attempting to troubleshoot a frame relay problem you are having withinthe Certkiller network, but you are unsure where to start. You begin by entering thecommand:Router# show frame-relay ?Which three options will you be prompted for? (Select three answers choices)A. dlciB. clientsC.
pvcD. neighborsE. lmiF. mapAnswer: C, E, FExplanation:The valid options for, 'show frame-relay' are: show frame-relay map, show frame-relaylmi, & show frame-relay pvc. In the Cisco IOS, if you don't type in a command specificenough, it will prompt you to select an option.Incorrect Answers:A, B, D.
Show frame-relay dlci, show frame-relay clients, and show frame-relayneighbors are all invalid commands.QUESTION 708:Exhibit:Actualtests.com - The Power of Knowing640-802In the example above, A Certkiller router interface is being configured for FrameRelay.
However, as the exhibit shows, the router will not accept the command toconfigure the LMI type. What is the problem?A. The interface does not support Frame Relay connections.B. The interface does not have an IP address assigned to it yet.C. The interface requires that the no shutdown command be configured first.D. The interface requires that the encapsulation frame-relay command be configuredfirst.Answer: DExplanation:Before entering LMI type in interface, you should type the encapsulation frame-relaycommand. By default, serial interfaces use HDLC encapsulation, where the LMI type isnot a configurable option as HDLC does not understand the concept of LMI.See the sample Configuration steps:Router(config-if)#encapsulation frame-relay {cisco | ietf}Router(config-if)#frame-relay lmi-type {ansi | cisco | q933a}QUESTION 709:Refer to the Certkiller frame relay exhibit below:In this frame relay network, which IP addresses would be assigned to the CK1 , CK2 ,and CK3 interfaces when using point-to-point PVCs?A.
DLCI 16: 192.168.10.1 /24DLCI 17: 192.168.10.1 /24DLCI 99: 192.168.10.2 /24DLCI 28: 192.168.10.3 /24Actualtests.com - The Power of Knowing640-802B. DLCI 16: 192.168.10.1 /24DLCI 17: 192.168.11.1 /24DLCI 99: 192.168.12.1 /24DLCI 28: 192.168.13.1 /24C. DLCI 16: 192.168.10.1 /24DLCI 17: 192.168.10.2 /24DLCI 99: 192.168.10.3 /24DLCI 28: 192.168.10.4 /24D. DLCI 16: 192.168.10.1 /24DLCI 17: 192.168.11.1 /24DLCI 99: 192.168.10.2 /24DLCI 28: 192.168.11.2 /24Answer: DExplanation:With Point to point PVC's, two subinterfaces would be created on router CK2 , one foreach connection to the remote locations.
In this network, the connection to CK1 wouldrequire one IP subnet, and the connection to router CK3 would require another. Thesetwo subnets must be separated, as each subinterface requires a distinct IP network. Onlychoice D correctly shows one IP subnet allocated to the CK1 - CK2 network, and one forthe CK2 - CK3 connection.QUESTION 710:What is the advantage of using a multipoint interface instead of point-to-pointsubinterfaces when configuring a Frame Relay hub in a hub-and-spoke topology?A.
It avoids split-horizon issues with distance vector routing protocols.B. IP addresses can be conserved if VLSM is not being used for subnetting.C. A multipoint interface offers greater security compared to point-to-point subinterfaceconfigurations.D. The multiple IP network addresses required for a multipoint interface provide greateraddressing flexibility over point-to-point configurations.E. None of the aboveAnswer: BExplanation:Frame Relay supports two types of interfaces: point-to-point and multipoint.
The one youchoose determines whether you need to use the configuration commands that ensure IPaddress to data-link connection identifier (DLCI) mappings. After configuring the PVCitself, you must tell the router which PVC to use in order to reach a specific destination.Let's look at these options:1. Point-to-point subinterface - With point-to-point subinterfaces, each pair of routers hasActualtests.com - The Power of Knowing640-802its own subnet. If you put the PVC on a point-to-point subinterface, the router assumesthat there is only one point-to-point PVC configured on the subinterface. Therefore, anyIP packets with a destination IP address in the same subnet are forwarded on this VC.This is the simplest way to configure the mapping and is therefore the recommendedmethod. Use theframe-relay interface-dlci command to assign a DLCI to a specified Frame Relaysubinterface.2. Multipoint networks - Multipoint networks have three or more routers in the samesubnet.
If you put the PVC in a point-to-multipoint subinterface or in the main interface(which is multipoint by default), you need to either configure a static mapping or enableinverse Address Resolution Protocol (ARP) for dynamic mapping.QUESTION 711:Part of the Certkiller network is shown below:After the router interfaces shown in the diagram above have been configured, it isdiscovered that hosts in the Branch LAN cannot access the Internet.Further testing reveals additional connectivity issues. What will fix this problem?A. Change the address of the Branch router LAN interface.B. Change the address of the Branch router WAN interface.C. Change the subnet mask of the HQ router LAN interface.D.
Change the address of the HQ router LAN interface.E. Change the address of the HQ router interface to the Internet.F. Change the subnet mask of the HQ router interface to the Internet.G. None of the aboveAnswer: BExplanation:The serial line connection between the Branch office and the HG office should haveActualtests.com - The Power of Knowing640-802interfaces that belong in the same subnet.
Based on the diagram above, the WANinterface of the Branch router is configured with an IP address that is in a different IPnetwork than the serial interface of the HG router. As it is set up currently, no traffic willpass from the Branch router to the HG until these two interfaces are in the same subnet.QUESTION 712:Two Certkiller routers are connected as shown below:Certkiller 1 command output exhibit:The two Certkiller routers shown above are the only Cisco devices on the network.The serial network between the two devices has a mask of 255.255.255.252 (/30).Given the output that is shown, what three statements are true of these devices?(Choose three)A. The Certkiller 1 serial address is 10.1.1.1.B.
The CDP information was received on port Serial0/0 of the Certkiller 1 router.C. The CDP information was sent by port Serial0/0 of the Certkiller 2 router.D. The Certkiller 2 router is a Cisco 2610.E. The Certkiller 1 router is a Cisco 2610.F. The Certkiller 1 serial address is 10.1.1.2.G. CDP is not enabled on Certkiller 2Answer: A, B, DQUESTION 713:Actualtests.com - The Power of Knowing640-802A point to point leased line connecting routers Certkiller 1 and Certkiller 2 is installedas shown below:The two serially connected routers can't communicate.
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