Module 4.1

Question 1

what does a byte consist of

Answer 1

8 bits

Question 2

3 common types variables used across languages

Answer 2

-integer/whole number
-real/decimal/floating point
-string/text

Question 3

how data becomes unreliable

Answer 3

when we try to allocate values to variables that cannot ‘fit; into the space provided

Question 4

truncation

Answer 4

misrepresentation of a string variable because there are not enough bytes available to store all the characters in the string

Question 5

overflow

Answer 5

integer number is misrepresented due to an insufficient number of bytes being available

Question 6

loss of accuracy

Answer 6

while programs use different ways & number of bytes to store numbers, decimal, real numbers normally stored namely part and exponent part

Question 7

ASCII

Answer 7

American Standard code for Information Interchange system which is a coding system limited to 256 different characters, eg. ë 137