Options: (A)The actual discovery phase of a knowledge discovery process (B) The stage of selecting the right data for a KDD process (C) A subject-oriented integrated timevariant non-volatile collection of data in support of management (D) None of these 2
Options: (A)Observed speedup of a code which has been parallelized, defined as: wall-clock time of serial execution and wall-clock time of parallel execution (B) The amount of time required to coordinate parallel tasks. It includes factors such as: Task start-up time, Synchronizations, Data communications. (C) Refers to the hardware that comprises a given parallel system - having many processors (D) None of these 1
Which of the following describes the operation of a positive edge-triggered D-type flip-flop?
Options: If both inputs are HIGH, the output will toggle., The output will follow the input on the leading edge of the clock., When both inputs are LOW, an invalid state exists., The input is toggled into the flip-flop on the leading edge of the clock and is passed to the output on the trailing edge of the clock.
A rule of thumb for choosing indexes for a relational database includes which of the following?
Options: Indexes are more useful on smaller tables., Indexes are more useful for columns that do not appear frequently in the WHERE clause in queries., Do not specify a unique index for the primary key of each table., Be careful indexing attributes that have null values.