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19 Cards in this Set
- Front
- Back
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How much total bandwidth is provided by a T1 line? |
1.544 Mb/s |
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Which command would be used to troubleshoot serial interface encapsulation? |
debug ppp packet |
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What is the purpose of a null modem cable? |
to connect between two DTE devices |
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PPP frame field a single byte that designates the beginning or end of a PPP frame |
flag |
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PPP frame field a byte filled with all 1s |
address |
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PPP frame field a field with 00000011 so that data link establishment is not required |
control |
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PPP frame field one (if compression allowed) or two bytes |
protocol |
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PPP frame field 0 to 1500 bytes of information |
data |
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PPP frame field up to 4 bytes for error detection |
frame check sequence |
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Which two protocols provide authentication services for PPP? (Choose two.) |
PAP CHAP |
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Which serial 0/0/0 interface state will be shown if no serial cable is attached to the router, but everything else has been correctly configured and turned on? |
Serial 0/0/0 is down, line protocol is down |
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How many DS0 channels are bounded to produce a 1.544 Mb/s DS1 line? |
24 |
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Which two statements are true about time-division multiplexing (TDM)? (Choose two.) |
-Multiple channels can transmit over a single link. -Original data streams must be reconstructed at the destination. |
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The default encapsulation for WAN interfaces is __________ on Cisco routers. |
HDLC |
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What does the demarcation point represent in data communication physical circuits? |
physical point at which the public network ends and the private customer network begins |
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A network designer is prototyping a WAN design. When configuring CHAP authentication for PPP, how should the username on each router be configured? |
It should be the same as the remote router hostname. |
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With which layers of the OSI model do the PPP control protocols interface? |
NCP interfaces with Layer 3; LCP interfaces with Layer 1 |
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Which PPP option enables load balancing on PPP-enabled interfaces that connect to a single destination? |
Multilink |
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Which two functions are provided by the NCP during a PPP connection? (Choose two.) |
-bringing the network layer protocol or protocols up and down -the negotiation of options for the IP protocol |
