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Dao Xuan Hung - Take Exam Exam questions 1 . Which of the following are related to Frame Relay? Choose three. CIR Be Bc BGP 2 . What does Frame Relay use to control congestion? Choose three. DE SDLC BECN FECN 3 . Based on the configuration shown, what is the CIR of interface Serial0.300? interface Serial0 no ip address encapsulation frame-relay no fair-queue frame-relay traffic-shaping bandwidth 1536 interface Serial0.100 point-to-point ip address 10.1.1.1 255.255.255.0 frame-relay interface-dlci 100 class Cisco interface Serial0.200 point-to-point ip address 10.1.2.1 255.255.255.0 frame-relay interface-dlci 200 class Cisco interface Serial0.300 point-to-point ip address 10.1.3.1 255.255.255.0 frame-relay interface-dlci 300 map-class frame-relay Cisco frame-relay cir 128000 frame-relay adaptive-shaping becn 56 kbps 64 kbps 128 kbps 896 kbps 1536 kbps 4 . Which of the following are true regarding packet switching? Choose two. A modem is used to enable devices to share packet switching circuits. ATM, Frame Relay, SMDS, and X.25 are all examples of packet-switched WAN technologies. Packet switching is a WAN switching method in which network devices share a single point-to-point link to transport packets from a source to a destination across a carrier network. A bridge is used to enable devices to share packet switching circuits. 5 . At which layers of the OSI reference model does Frame Relay operate? Choose two. Network Data Link Physical Transport 6 . What is the function of Frame Relay BECN? Identifies the logical virtual circuit between CPE and the Frame-Relay switch Signaling between the CPE and the Frame-Relay switch that is responsible for managing the connection and maintaining status between devices The rate at which a Frame-Relay switch agrees to transfer data A frame sent from the Frame-Relay switch to the source router when network congestion is detected 7 . Compression is best used in which of the following situations? Fast network links Slow network links with no congestion Frame Relay link with 10 percents – 40 percents utilization BRI with constant 60 percents - 100 percents utilization 8 . What information is needed to choose a CIR (Committed Information Rate) for a Frame Relay network? Choose three. Amount of expected interactive traffic Amount of expected bandwidth regeneration Amount of expected file and transfer traffic Amount of expected broadcast traffic 9 . Which of the following are true regarding a DLCI (Data-Link Connection Identifier)? Choose two. It identifies a Frame Relay virtual circuit It helps a Token Ring network identify the active monitor It is usually assigned by the Frame Relay service provider It must be the same for all DTE devices on the WAN 10 . Which of the following is true of Frame Relay FECN and/or BECN? Choose one. Logical virtual circuit between Customer Equipment and Frame-Relay network The rate at which a Frame-Relay switch agrees to transfer data Frame sent from the Frame-Relay network to a router when the network is congested Signaling between Customer Equipment and Frame-Relay network responsible for connection management and maintaining status 11 . How does Traffic Shaping help to reduce congestion on an internetwork? Reduces the flow of outbound traffic from a router interface into a network backbone Shapes frames to allow bit rounding Allows multiple protocols to run on same network cable Causes protocol swapping which reduces interoperability issues 12 . You have a hub-and-spoke Frame Relay network. None of the spoke routers can ping any other spoke routers, yet all spoke routers can ping the hub router. What is a possible cause? Disabled split horizon Poison reverse issue Inverse ARP issue Spanning-tree loop 13 . Which of the following are true regarding LMI (Local Management Interface)? Choose two. The LMI is a set of enhancements to the Frame Relay specification It can be used only with an SVC (Switched Virtual Circuit) It was developed by IBM It offers a number of features called extensions for managing complex internetworks 14 . What set of Frame Relay enhancements offer extensions for managing complex internetworks? CMT SNMP LMI RMON 15 . You enable Frame Relay traffic shaping and configure a CIR of 64kbps. Using 125ms time interval, what will be the value of the committed burst (Be). 32000 bits 24000 bits 16000 bits 8000 bits 16 . Frame Relay implements two congestion notification mechanisms. What are they? DLCI CSMA FECN BECN 17 . What two general categories do Frame Relay devices fall under? CSU DSU DTE DCE 18 . Which one of the following is true regarding a Frame Relay DLCI? It is a frame sent from the Frame-Relay switch to the destination router when network congestion is detected It is the frame sent from the Frame-Relay network to a router when the network is congested It is the logical virtual circuit between Customer Equipment and the Frame-Relay network It is the rate at which a Frame-Relay switch agrees to transfer data Showing page 1 of 1 : 1Go! © 2004 HanoiCTT. All rights reserved. 123doc.vn