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CISA-1220 Routing > 4-7: Frame Relay > Flashcards

4-7: Frame Relay Flashcards

1
Q

What is a characteristic of Frame Relay that provides more flexibility than a dedicated line?

A

One router WAN port can be used to connect to multiple destinations.

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2
Q

The Frame Relay ____ identifies a connection from one endpoint to a remote destination.

A

DLCI

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3
Q

A network administrator issues the show frame-relay map command to troubleshoot the Frame Relay connection problem. Based on the output, what is the possible cause of the problem?

A

The Frame Relay map statement on the R3 router for the PVC to R2 is configured with an incorrect DLCI number.

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4
Q

A network administrator has statically configured the LMI type on the interface of a Cisco router that is running Cisco IOS Release 11.2. If the service provider modifies its own LMI type in the future, what step must the network administrator take?

A

The network administrator must statically set the LMI type to be compatible with the service provider.

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5
Q

A router interface connects to a Frame Relay network over a preconfigured logical circuit that does not have a direct electrical connection from end to end. Which type of circuit is being used?

A

PVC

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5
Q

Which Frame Relay topology provides a connection from every site to every other site and maintains a high amount of reliability?

A

full mesh

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6
Q

Which three notification mechanisms are used when congestion is present in a Frame Relay network?

A

DE BECN FECN

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7
Q

When would the multipoint keyword be used in Frame Relay PVCs configuration?

A

when participating routers are in the same subnet

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8
Q

A network administrator has implemented the show interfaces serial 0/1/0 command. What can be verified from the displayed output?

A

Router R1 is forwarding traffic on interface serial 0/1/0 using the local DLCI 1023.

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9
Q

Which three actions can be taken to solve Layer 3 routing protocol router reachability issues when using Frame Relay?

A

Use subinterfaces. Use a full mesh topology. Disable split horizon.

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9
Q

A network administrator is configuring Frame Relay subinterfaces on R1. A distance vector routing protocol has also been configured. Data is routing successfully from R1 to networks that are connected to R2, R3, and R4, but routing updates between R2 and R3 are failing. What is the possible cause of this failure?

A

Split horizon is preventing successful routing table updates on the multipoint link.

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10
Q

Why would a customer request a Frame Relay circuit with a CIR of zero?

A

To have a link with reduced costs

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11
Q

Which statement is true about Frame Relay traffic on R1?

A

Traffic that exits subinterface Serial 0/0/0.102 is marked with DLCI 201.

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12
Q

Which two Frame Relay router reachability issues are resolved by configuring logical subinterfaces?

A

Distance vector routing protocols are unable to forward routing updates back out the incoming interface to other remote routers. Link-state routing protocols are unable to complete neighbor discovery.

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13
Q

Which two functions are provided by the Local Management Interface (LMI) that is used in Frame Relay networks?

A

simple flow control exchange of information about the status of virtual circuits

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15
Q

Which provider-negotiated parameter would allow a customer to send data above the rate of the bandwidth specified by the CIR?

A

Bc

17
Q

What are the two major criteria that constitute the cost of a Frame Relay circuit?

A

local loop required bandwidth

17
Q

Which technology allows a Layer 3 IPv4 address to be dynamically obtained from a Layer 2 DLCI?

A

Inverse Address Resolution Protocol

20
Q

Which parameter would be specified in a Frame Relay provider contract for a particular company?

A

CIR

20
Q

The show frame-relay pvc command is best utilized to display the number for which type of packets that are received by the router?

A

FECN and BECN messages

21
Q

The encapsulation frame-relay ____ command enables Frame Relay encapsulation and allows connection to a device from a different vendor.

A

ietf

22
Q

Which two statements are correct?

A

The IPv4 address of interface S0/1/1 on RB is 192.168.1.2.
The DLCI that is attached to the VC on RA to RB is 62.

23
Q

A network engineer has issued the interface serial 0/0/1.102 point-to-point command on a router that will be communicating with another router over a Frame Relay virtual circuit that is identified by the DLCI 102. Which two commands would be appropriate for the network engineer to issue next?

A

ip address 10.1.1.10 255.255.255.252 frame-relay interface-dlci 102

24
Q

What is the purpose of applying the command frame-relay map ip 10.10.1.2 110 broadcast?​

A

to configure a device with a static Frame Relay map that also allows the forwarding of routing updates

CISA-1220 Routing (14 decks)

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