Top 350+ Solved Data Mining and Data Warehouse MCQ Questions Answer
Q. The time horizon in operational environment is ___________.
a. 30-60 days.
b. 60-90 days.
c. 90-120 days.
d. 120-150 days.
Q. The key used in operational environment may not have an element of__________.
a. time.
b. cost.
c. frequency.
d. quality.
Q. Data can be updated in _____environment.
a. data warehouse.
b. data mining.
c. operational.
d. informational.
Q. The source of all data warehouse data is the____________.
a. operational environment.
b. informal environment.
c. formal environment.
d. technology environment.
Q. Data warehouse contains_____________data that is never found in the operational environment.
a. normalized.
b. informational.
c. summary.
d. denormalize
Q. The modern CASE tools belong to _______ category.
a. analysis.
b. b.development
c. coding
d. delivery
Q. Bill Inmon has estimated___________of the time required to build a data warehouse, is consumed inthe conversion process.
a. 10 percent.
b. 20 percent.
c. 40 percent
d. 80 percent.
Q. GA stands for _______________.
a. genetic algorithm
b. gene algorithm.
c. general algorithm.
d. geo algorithm.
Q. Genetic algorithms are search algorithms based on the mechanics of natural_______.
a. systems.
b. genetics.
c. logistics.
d. statistics.
Q. Crossover is used to _______.
a. recombine the population\s genetic material.
b. introduce new genetic structures in the population.
c. to modify the population\s genetic material.
d. all of the above.
Q. The mutation operator ______.
a. recombine the population\s genetic material.
b. introduce new genetic structures in the population.
c. to modify the population\s genetic material.
d. all of the above.