Computer Networking
What layer of the OSI model would you assume the problem is in if you type show interface serial 1 and receive the following message? "Serial1 is down, line protocol is down."

Network layer
Data Link layer
Physical layer
None. It is a router problem.

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Computer Networking
Which of the following is true regarding VTP?

All switches are VTP transparent by default.
VTP is on by default with a domain name of Cisco on all Cisco switches.
All switches are VTP servers by default.
All switches are VTP clients by default.

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Computer Networking
The Token-Ring architecture was developed for a more efficient way to determine who should be transmitting at any one time. With Ethernet, collisions may take place, causing the transmitting computers to have to retransmit their data. The use of token guarantees that only one computer can transmit at a time. What happens as the network increases in size? Choose the best answer

The network becomes less efficient
An additional token is added for every 1,000 nodes
The network becomes more efficient
The speed of the Token-Ring network must be 16Mbps if the number of nodes is greater then 500
After the number of nodes exceeds 550, the Multistation Access Unit must be replaced by the more powerful Hyperstation Unified Bandwidth device

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