Ccna 4 chapter 3 v4.0 answers 2011
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1. A Frame Relay switch may perform three actions when detecting excessive frame buildup: put a hold on accepting frames in excess of the CIR, drop frames from the queue that have the DE bit set, and set the BECN bit on all frames it places on the congested link. 2. The benefit of Frame Relay over leased lines or ISDN is that customers only pay for the bandwidth they purchase from the network provider. 3. For routers R1, R2, and R3 to ping each other successfully over Frame Relay, R2 and R3 would need the frame-relay map commands configuring the correct DLCIs to establish connectivity between all routers.
Ccna 4 chapter 3 v4.0 answers 2011
- 1. www.ccnafinal.net www.ccnafinalexam.com www.ccnaanswers.org www.ccna4u.net www.ccna4u.org www.ccna4u.info 1. Which three actions might a Frame Relay switch perform when it detects an excessive build-up of frames in its queue? (Choose three.) puts a hold on accepting frames in excess of the CIR drops frames from the queue that have the DE bit set reduces the number of frames it sends over the link re-negotiates flow control with the connected device sets the FECN bit on all frames it receives on the congested link sets the BECN bit on all frames it places on the congested link 2. Which best describes the benefit of using Frame Relay as opposed to a leased line or ISDN service? Customers can define their virtual circuit needs in far greater combinations, with increments as small as 64 kbps. Customers pay for an end-to-end connection that includes the local loop and the network link. Customers only pay for the local loop and the bandwidth they purchase from the network provider. Connecting new sites requires new lower cost circuit installations when compared to ISDN dialup costs or adding additional hardware for leased service. 3.
- 2. www.ccnafinal.net www.ccnafinalexam.com www.ccnaanswers.org www.ccna4u.net www.ccna4u.org www.ccna4u.info Refer to the exhibit. Router R1 has been configured for Frame Relay connectivity to routers R2 and R3. What configuration option should be configured on the R2 and R3 serial interfaces in order for all routers to ping each other successfully? R2(config-if)# frame-relay interface-dlci 201 broadcast R3(config-if)# frame-relay interface-dlci 301 broadcast R2(config-if)# frame-relay map ip 10.1.1.1 201 broadcast R3(config-if)# frame-relay map ip 10.1.1.1 301 broadcast R2(config-if)# frame-relay map ip 10.1.1.3 201 broadcast R3(config-if)# frame-relay map ip 10.1.1.2 301 broadcast R2(config-if)# frame-relay map ip 10.1.1.1 201 broadcast R2(config-if)# frame-relay map ip 10.1.1.3 201 broadcast R3(config-if)# frame-relay map ip 10.1.1.1 301 broadcast R3(config-if)# frame-relay map ip 10.1.1.2 301 broadcast 4. Which two items allow the router to map data link layer addresses to network layer addresses in a Frame Relay network? (Choose two.) ARP RARP Proxy ARP Inverse ARP LMI status messages ICMP 5. Refer to the exhibit. Which two outcomes occur from the configuration shown? (Choose two.) The broadcasts will be forwarded to 10.1.1.1. The router will use DLCI 22 to forward data to 10.1.1.1. DLCI 22 will replace the MAC address in the ARP table for entry 10.1.1.1 Inverse-ARP will now add an entry for 10.1.1.1 into the Frame Relay map table using DLCI 22. Frames sent by 10.1.1.1 arriving on interface serial 0/0/0 of RT_1 will have a data link layer address of 22. 6.
- 3. www.ccnafinal.net www.ccnafinalexam.com www.ccnaanswers.org www.ccna4u.net www.ccna4u.org www.ccna4u.info Refer to the exhibit. What can be determined about the Frame Relay switch from the output shown? It is currently not transmitting data. It is in the process of establishing the PVC. It has put a hold on processing frames in excess of the CIR. It is experiencing congestion. 7. Refer to the exhibit. What can be determined from the output? Serial 0/0/0 has been configured with an DLCI of 201. Serial 0/0/0 has the feature frame-relay inverse-arp enabled. Serial 0/0/0 has been configured with an IP address of 172.16.4.3. Serial 0/0/0 has been configured with the command frame-relay map ip 172.16.4.3 201 broadcast. 8.
- 4. www.ccnafinal.net www.ccnafinalexam.com www.ccnaanswers.org www.ccna4u.net www.ccna4u.org www.ccna4u.info Refer to the exhibit. What effect does the point-to-point configuration on subinterface S0/0.110 have on the operation of the router? It helps to conserve IP addresses. It establishes multiple PVC connections to multiple physical interfaces. It eliminates split horizon issues without increasing the likelihood of routing loops. It requires the configuration of the encapsulation command on the subinterface. 9. Refer to the exhibit. Which statement explains why the Frame Relay connection between R1 and R2 is failing? Split horizon must be disabled. The LMI type must be specified. Logical subinterfaces must be used instead. The frame-relay map commands are using incorrect DLCIs. 10. What best describes the use of a data-link connection identifier (DLCI)? local address identifying a destination router across a Frame Relay network locally significant address used to identify a virtual circuit logical address identifying the interface between a router and a Frame Relay switch logical address used to identify the DCE 11.
- 5. www.ccnafinal.net www.ccnafinalexam.com www.ccnaanswers.org www.ccna4u.net www.ccna4u.org www.ccna4u.info Refer to the exhibit. Router R1 has been configured for Frame Relay connectivity to routers R2 and R3. Which set of configuration options for routers R2 and R3 would provide each router connectivity to R1? R2(config)# interface serial0/0/1 R2(config-if)# frame-relay map ip 10.1.1.1 102 R3(config)# interface serial0/0/1 R3(config-if)# frame-relay map ip 10.1.2.1 103 R2(config)# interface serial0/0/1 R2(config-if)# frame-relay map ip 10.1.1.1 102 R2(config-if)# frame-relay map ip 10.1.2.3 301 R3(config)# interface serial0/0/1 R3(config-if)# frame-relay map ip 10.1.2.1 103 R3(config-if)# frame-relay map ip 10.1.1.2 201 R2(config)# interface serial0/0/1.201 point-to-point R2(config-if)# no frame-relay invers-arp R3(config)# interface serial0/0/1.301 point-to-point R3(config-if)# no frame-relay invers-arp R2(config)# interface serial0/0/1.201 point-to-point R2(config-if)# frame-relay interface-dlci 201 R3(config)# interface serial0/0/1.301 point-to-point R3(config-if)# frame-relay interface-dlci 301 12.
- 6. www.ccnafinal.net www.ccnafinalexam.com www.ccnaanswers.org www.ccna4u.net www.ccna4u.org www.ccna4u.info Refer to the exhibit. Frame Relay connectivity has been configured in the network and OSPF is used as the routing protocol. Router R1 can successfully ping the router R2 serial interface. When R1 attempts to ping network 192.168.3.0/24 the ping fails. What additional configuration should be applied on all routers to remedy the problem? Add the broadcast keyword in the Frame Relay map command on both routers. Issue the frame-relay interface-dlci command in addition to the frame-relay map command on both router interfaces. Remove the frame-relay map command and replace with the frame-relay interface-dlci command on both router interfaces. Apply the no frame-relay inverse-arp command on both router interfaces. 13. Which statement about Frame Relay subinterfaces is correct? Multipoint interfaces will automatically forward routing broadcasts but will consume more IP addresses than point-to-point subinterfaces will consume. Point-to-point subinterfaces act like leased lines and eliminate split-horizon routing issues. Interfaces with multiple PVCs require a separate subinterface for each PVC. Multipoint configurations cannot use subinterfaces. 14.
- 7. www.ccnafinal.net www.ccnafinalexam.com www.ccnaanswers.org www.ccna4u.net www.ccna4u.org www.ccna4u.info Refer to the exhibit. What can be determined about the configuration of router R1 from the exhibited output? LMI updates are not being received properly. The LMI type for the Serial 0/0/0 interface has been left to its default configuration. Cisco HDLC is used as a Layer 2 encapsulation protocol on the Serial 0/0/0 interface. The Serial 0/0/0 interface has been configured as a data communications equipment device. 15. What is created between two DTEs in a Frame Relay network? ISDN circuit limited access circuit switched parallel circuit virtual circuit 16. Which Frame Relay topology is a compromise of costs, reliability, and complexity when the WAN contains one headquarters site, 40 regional sites, and several sites within each regional site? star full mesh partial mesh point-to-multipoint point-to-point 17.
- 8. www.ccnafinal.net www.ccnafinalexam.com www.ccnaanswers.org www.ccna4u.net www.ccna4u.org www.ccna4u.info Refer to the exhibit. A ping is sent to address 192.168.50.10 from the Peanut router. Which DLCI will be used to send the ping? 110 115 220 225 18. What two methods does Frame Relay technology use to process frames that contain errors? (Choose two.) Frame Relay services depend on the upper layer protocols to handle error recovery. It requires the receiving device to request that the sender retransmit erroneous frames. FECN, BECN, and DE bits are set in the frames to minimize errors. The receiving device drops any frames that contain errors without notifying the sender. The frame relay switch notifies the sender that errors were detected. 19. Refer to the exhibit. Which two statements are true given the output shown? (Choose two.) The IP address of the local Frame Relay interface is 172.16.1.4. The local DLCI number is 401. Inverse ARP is being used on this connection. This interface is in the active state and in the process of negotiating configuration parameters. Multicast is not enabled on this connection. 20.
- 9. www.ccnafinal.net www.ccnafinalexam.com www.ccnaanswers.org www.ccna4u.net www.ccna4u.org www.ccna4u.info Refer to the exhibit. What can be known about the configuration of router R1 from the output? The Frame Relay LMI DLCI has been incorrectly configured as DLCI 1023. The Frame Relay LMI type has been changed from its default. The Serial 0/0/0 interface has been configured as a data communications equipment device. The command encapsulation frame-relay ietf has been used on the Serial 0/0/0 interface. 21. What consideration must be taken into account if RIP is used on Frame Relay multiaccess networks? To forward routing updates, address-to-DLCI mapping must be done via the use of the frame-relay map command coupled with the broadcast keyword. Inverse ARP must be enabled to turn routing update broadcasts into unicast traffic that can be propagated to other Frame Relay nodes. Because broadcast traffic is not supported, RIPv1 cannot be implemented on Frame Relay networks. To forward broadcast routing updates, dynamic mapping must be enabled. 22.
- 10. www.ccnafinal.net www.ccnafinalexam.com www.ccnaanswers.org www.ccna4u.net www.ccna4u.org www.ccna4u.info Refer to the exhibit. You are a network administrator who has been tasked with completing the Frame Relay topology that interconnects two remote sites. Router HQ belongs to both the 172.16.1.0/24 and 172.16.2.0/24 subnets with IP addresses of 172.16.1.3 and 172.16.2.3 respectively. Traffic between R1 and R2 must travel through HQ first. How should the serial interface on HQ be configured to complete the topology? one multipoint subinterface two point-to-point subinterfaces with the physical interface configured with two ip addresses one IP address on a point-to-point subinterface and one IP address on the physical interface Taged: frame relay packet tracer,ccna 4 chapter 3 v4,ccna 4 final 2011 options,ccna chapter 3 exam answers Related Posts • CCNA 4 Final Exam V4.0 Answers • CCNA 4 Chapter 8 V4.0 Answers • CCNA 4 Chapter 7 V4.0 Answers • CCNA 4 Chapter 6 V4.0 Answers • CCNA 4 Chapter 5 V4.0 Answers
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