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IT Passport Examination (IP) | Technology: Basic Theory and Algorithms Questions 01

1 / 90.0s

Problem 1

Which is the decimal number 25 expressed in binary?

View explanation

25 = 16 + 8 + 1, which gives 11001 in binary.

Problem 2

Which is the logical AND of the binary numbers 1010 and 0110?

View explanation

Only the positions where both bits are 1 become 1, giving 0010.

Problem 3

How many bytes is 1 KiB?

View explanation

KiB is 2 to the power of 10 bytes, so 1,024 bytes.

Problem 4

If an event has a probability of 0.2, what is the probability that it occurs on both of two independent trials?

View explanation

The events are independent, so 0.2 × 0.2 = 0.04.

Problem 5

What is the mean of the data 2, 4, 4, 10?

View explanation

The total of 20 divided by the 4 data points gives a mean of 5.

Problem 6

Which statistic is the value that sits in the middle when the data are arranged in ascending order?

View explanation

The median is the value at the center of the ordered data.

Problem 7

Which are the three basic structures: processing in order from the top, choosing a process according to a condition, and repeating a process?

View explanation

The basic control structures of structured programming are sequence, selection and iteration.

Problem 8

What condition must the data meet for binary search, which halves the search range each time, to be applied?

View explanation

Binary search halves the range by comparing magnitudes, so the data must already be sorted.

Problem 9

Which technology learns regularities from large volumes of training data and classifies or predicts unseen data?

View explanation

Machine learning learns patterns from data and uses them for tasks such as classification and prediction.