31) When we want to combine the signals from an electronic sound synthesizer into a computer, the data combination occurs in this data format:

a) MOD

b) VOC

c) WAV

d) MIDI

32) The type of media for which the .WAV data format is used as the main vehicle for storage and reproduction is

a) text.

b) sound.

c) video

d) pictures.

33) The lossless style of data compression MUST be used for all of these but NOT for

a) text files.

b) program files.

c) multimedia files.

d) numerical data files.

34) The ZIP files use

a) lossy algorithms only.

b) lossless algorithms only.

c) mix of both lossless and lossy algorithms.

d) depends on the nature of the data being compressed.

35) Two-valued variables or the type of constants with fixed value of T(true) or F(false), are called

a) float.

b) binary.

c) Boolean.

d) double variables.

36) In what manner do computers store all data and program instructions?

a) As decimal numbers.

b) As binary numbers

c) As ASCII numbers

d) As secondary memory.

37) In cases where you want to store a number in a computer and the number is outside of the integer range of the computer or when the number contains a part that is a fraction, then the number is stored as a(n):

a) variable.

b) exponent.

c) complement.

d) real number.

38) A storage location of one byte (of 8-bits) can store this maximum quantity of unique decimal numbers:

a) 8

b) 255

c) 256

d) 512

39) What does BCD stand for?

a) Binary-Coded Decimal

b) Binary Calculating Device

c) Binary Common Denominator

d) Binary Character Data

40) What is the most common way to represent negative integers in binary form?

a) As BCD

b) Using sign-and-magnitude

c) Using 2's complement

d) None of the above

41) If we complement a binary value two times, then the impact on the value is this:

a) be twice as big.

b) return to its original value.

c) cause an overflow error.

d) reset the carry flag.

42) Given a binary number, if we change all of the 0s to 1s, and change all of the 1s to 0 s then we are performing:

a) inversion.

b) reversion

c) twos complement

d) conversion.

43) Using sign-and-magnitude representation, if the leftmost bit is 1 the number is

a) positive.

b) negative.

c) an error.

d) a character

44) How do you find the 2's complement of positive numbers?

a) Invert the numbers

b) Invert the numbers and add one

c) Invert the numbers and wrap around the leftmost bit

d) Do nothing, the complement is the same as the original

45) What is the number 12.345 x 10² without using exponential notation?

a) 0.12345

b) 123.45

c) 1234.5

d) 12345