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Incorrect Answers:
A is incorrect; increasing the idle time parameter will only result in increasing the idle time.
C is incorrect; rebooting the router will only result in the router going through its post.
D is incorrect; this action will not confirm whether a DDR has connectivity or not.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 397-407.
Q.56
Which element is used to define the rate, in bits per second, that a Frame Relay switch agrees to transfer
data?
A. Clock rate (CR).
B. Committed Information Rate (CIR)
C. Local management interface (LMI)
D. Data-link connection identifier (DLCI)
E. Committed Rate Measurement Interval (CRMI)
Answer: B
Explanation: CIR is the rate, in bits per second, at which the service provider states that data will be transfered.
Incorrect Answers:
A is incorrect; clock rate is the transmission medium speed, which is determined by modem clocking.
C is incorrect; LMI is a signaling standard between the router device and the Frame Rekay switch that is
responsible for managing the connection and maintaining the status between the devices.
D is incorrect; DLCI is addressing used to identify virtual circuits.
E is incorrect; this is the sampling period used in controlling CIR, but is not the rate itself.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 413-414.
Q. 57
Which term describes the process in which frames from one network system are placed inside the frames
of another network system?
A. bridging
B. tunneling
C. data-link control
D. generic routing
E. packet switching
Answer: B