Computer Networking
In geosynchronous orbit, satellite

remains in a fixed position so that as earth rotates, it can fully cover the earth
remains in a fixed position related to points on earth
moves simultaneously
None of these
moves faster than the earth's rotation so that it can cover larger portion of earth.

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Computer Networking
You type the following command into the router and receive the following output:Router#show serial 0/0 ^% Invalid input detected at '^' marker.Why was this error message displayed?

Part of the command is missing.
You cannot have a space between serial and 0/0.
You need to be in privileged mode.
The router does not have a serial0/0 interface.

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Computer Networking
Ethernet networks can be cabled in a number of topologies, depending on what works best in each environment. As more nodes are added, the efficiency of Ethernet decreases. Select the best answer as to why Ethernet becomes less efficient as size increases.

Network collisions occur
"Line echo" occurs due to the impedance of the cable
Cable terminators do not reflect the signal properly
Repeaters cannot increase the signal strength sufficiently
Cable terminators do not absorb the signal properly

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