CCNA 4: Chapter 4: Frame Relay

Question 1

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

Answer 1

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

Question 2

What are the two major criteria that constitute the cost of a Frame Relay circuit? (Choose two.)

Answer 2

1. local loop

2. required bandwidth

Question 3

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?

Answer 3

PVC

Question 4

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

Answer 4

Full mesh

Question 5

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

Answer 5

Inverse Address Resolution Protocol

Question 6

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?

Answer 6

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

Question 7

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

Answer 7

1. simple flow control

2. exchange of information about the status of virtual circuits

Question 8

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

Answer 8

CIR

Question 9

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

Answer 9

1. DE
2. BECN
3. FECN

Question 10

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

Answer 10

to have a link with reduced costs

Question 11

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

Answer 11

Bc

Question 12

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

Answer 12

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

Question 13

RA Frame Relay RB

Refer to the exhibit. Which two statements are correct? (Choose two.)

Answer 13

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

Question 14

Refer to the exhibit. Which statement is true about Frame Relay traffic on R1?

Answer 14

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

Question 15

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

Answer 15

1. Use subinterfaces.
2. Use a full mesh topology.
3. Disable split horizon.

Question 16

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

Answer 16

when participating routers are in the same subnet

Question 17

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? (Choose two.)

Answer 17

1. ip address 10.1.1.10 255.255.255.252

2. frame-relay interface-dlci 102

Question 18

Which two Frame Relay router reachability issues are resolved by configuring logical subinterfaces? (Choose two.)

Answer 18

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

Question 19

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

Answer 19

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

Question 20

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

Answer 20

FECN and BECN messages

Question 21

Refer to the exhibit. 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?

Answer 21

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

Question 22

Refer to the exhibit. 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?

Answer 22

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

Question 23

Fill in the blank. Use an acronym.

The Frame Relay “_____” identifies a connection from one endpoint to a remote destination.

Answer 23

DLCI

Question 24

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

Answer 24

ietf

Question 25

What are four leased lines?

Answer 25

1. customers pay for an end-to-end connection
2. customers do not share the line
3. requires more equipment to purchase and maintain
4. used in one-to-one network link only

Question 26

What are three (3) frame relays

Answer 26

1. used in one-to-many networks
2. uses virtual circuits
3. customers share bandwidth