Computer Networking
Error detecting code is

the ratio of the data units in error to the total number of data units
a code in which each expression conforms to specify rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and
an error-detecting code based on a summation operation performed on the bits to be checked
a check bit appended to an array of binary digits to make the sum of all the binary digits.
None of these

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Computer Networking
Terminals are required for

realtime, distributed processing, and manager inquiry
realtime, batch processing, and timesharing
realtime, timesharing, and message switching
realtime, timesharing, and distributed processing
None of these

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