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5 Cards in this Set
- Front
- Back
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What protocols are commonly used for point-to-point connections?
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HDLC and PPP (High level data link control, and point-to-point)
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Why do synchronous CSU/DSU's continuously send packets, even if there is no data to transmit?
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To keep their clocks in sync.
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How do you configure HDLC on a cisco router's serial interface?
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interface serial 1; encapsulation hdlc;
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Describe how PAP is used to authenticate a PPP session.
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Two routers are connected and the interfaces are brought up. One router initiates the process, by sending its username and password in the first message. They are sent in clear text.
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Describe how CHAP is used to authenticate a PPP session.
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Two routers are connected and the interfaces are brought up. The first router sends a challenge, asking for a username and password from the other router, and providing a random number. The second router runs a hash algorithm on its secret password using that random number and sends the result back. The first router runs the same algorithm using the same number, and compares the results.
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