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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:

Cabling the Wide Area Network

There are a couple of things that you need to know in order to connect your WAN. For starters, you’ve got to understand the WAN Physical layer implementation provided by Cisco, and you must be familiar with the various types of WAN serial connectors.

 

Cisco serial connections support almost any type of WAN service. The typical WAN connections are dedicated leased lines using HDLC, PPP, Integrated Services Digital Network (ISDN), and Frame Relay. Typical speeds run at anywhere from 56Kbps to 45Mbps (T3).


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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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