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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:

IP Addressing

One of the most important topics in any discussion of TCP/IP is IP addressing. An IP address is a numeric identifier assigned to each machine on an IP network. It designates the specific location of a device on the network.

 

An IP address is a software address, not a hardware address—the latter is hard-coded on a network interface card (NIC) and used for finding hosts on a local network. IP addressing was designed to allow hosts on one network to communicate with a host on a different network regardless of the type of LANs the hosts are participating in.


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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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