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10 Cards in this Set
- Front
- Back
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Which output from the show interfaces s0/0/0 command indicates that the far end of a point-to-point link has a different encapsulation set than the local router? |
Serial 0/0/0 is up, line protocol is down. |
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What is the default encapsulation for serial interfaces on a Cisco router? |
HDLC |
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What is the function of the Protocol field in a PPP frame? |
It identifies the network layer protocol encapsulated in the frame’s Data field |
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Which of the following statements describe the function of statistical time-division multiplexing (STDM)? (Choose three.) |
-Multiple data streams share one common channel. -STDM was developed to overcome the inefficiency caused by time slots still being allocated even when the channel has no data to transmit. |
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Which of the following describes the serial connection between two routers using the High-level Data Link Control (HDLC) protocol? |
Synchronous bit-oriented transmissions using a frame format that allows flow control and error detection |
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If an authentication protocol is configured for PPP operation, when is the client or user workstation authenticated? |
If an authentication protocol is configured for PPP operation, when is the client or user workstation authenticated? |
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Why are Network Control Protocols used in PPP? |
To allow multiple Layer 3 protocols to operate over the same physical link |
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Which statement describes the PAP authentication protocol? |
It uses a two-way handshake to establish identity. |
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11) A technician testing the functionality of a recently installed router is unable to ping the serial interface of a remote router. The technician executes the show interfaces serial 0/0/0 command on the local router and sees the following line in the router: Serial0/0/0 is down, line protocol is down What are two possible causes of this command output? |
-The carrier detect signal is not sensed. -The cabling is faulty or incorrect. |
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What is required to successfully establish a connection between two routers using CHAP authentication? |
The password configured with the router’s username must be the same on both routers. |
