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CCENT Prep Center:

 

CCENT.WS is offering a special online preparation center for the Cisco CCENT Certification Exam to anyone who want to earn CCENT Certification. The CCENT Prep Center has been in pilot test for almost one year, and got some interesting updates in 2009. This resource is FREE of charge to anyone who's want to become Cisco CCENT Certified. If you pay a visit to the CCENT Prep Center, here's you'll find:

Using Cisco Discovery Protocol (CDP)

Cisco Discovery Protocol (CDP) is a proprietary protocol designed by Cisco to help administrators collect information about both locally attached and remote devices. By using CDP, you can gather hardware and protocol information about neighbor devices, which is useful info for troubleshooting and documenting the network.

 

Getting CDP Timers and Holdtime Information

 

The show cdp command (sh cdp for short) gives you information about two CDP global parameters that can be configured on Cisco devices:

  • CDP timer is how often CDP packets are transmitted out all active interfaces.
  • CDP holdtime is the amount of time that the device will hold packets received from neighbor devices.
Both Cisco routers and Cisco switches use the same parameters.


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CCENT Practice Exam Questions
A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?
Send a different source port number.
Restart the virtual circuit.
Decrease the sequence number.
Decrease the window size.
A receiving host can control the transmitter by using flow control (TCP uses Windowing by default). By decreasing the window size, the receiving host can slow down the transmitting host so the receiving host does not overflow its buffers.
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