Computer Networking
Two computers that communicate with each other use a simple parity check to detect errors for ASCII transmissions. Which of the following events will always lead to an undeleted error?

None of these
one bit or any odd number of bits inverted in a block of data during transmission
two bits or any even number of bits inverted in a byte during transmission
one bit or any odd number of bits inverted in a byte during transmission
two bits or any even number of bits inverted in a block during transmission

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Computer Networking
The research and development department at your office has been experimenting with different technologies to help improve the performance of the network. One group has been examining the use of a broadband network versus a based band network. Select the correct statement about broadband and baseband.

Baseband networks carry a single channel on a single cable, whereas broadband networks carry several channels on a single cable
Baseband refers to local area networks, and broadband refers to wide area networks.
Broadband networks carry several channels on a single cable, whereas in a baseband network several cables carry one channel
Broadband and baseband refer to the different frequencies at which infrared operates then transmitting signals in certain conditions
Baseband operates at a standard bit rate, whereas broadband may operate at different rates as needed

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Computer Networking
What is a stub network?

A network with more than one exit point.
A network with more than one exit and entry point.
A network that has only one entry and exit point.
A network with only one entry and no exit point.

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Computer Networking
In geosynchronous orbit, satellite

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

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