Computer Networking
Which layer of international standard organization's OSI model is responsible for creating and recognizing frame boundaries?

network layer
transport layer
physical layer
data link layer
None of these

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Computer Networking
Parity bit is

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

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