COMPREHENSIVE EXAM on Computer Science101 [100% pass]

COMPREHENSIVE EXAM on Computer Science101 [100% pass] what is a Natural Number and its Symbol? *Ans* Positive Integer (N) What is a Real Number and its Symbol? *Ans* Any number (R) What is an Integer and its Symbol? *Ans* Any whole number (Z) What is a Rational Number and its Symbol? *Ans* Can be represented in a Fraction (Q) What is a Ordinal Number? *Ans* Position in a list What is a Cardinal Number? *Ans* Size of list What is Absolute Error? *Ans* Difference between actual answer and estimate What is Relative Error? *Ans* absolute error/true value How does parity bit work? (Odd/Even) *Ans* Bit (1/0) is added at end of code. Even parity - If there is an even number of 1's, 0 is added Odd parity - If there is an even number of 1's, 1 is added What is Majority Voting? *Ans* 3 bits are sent that are the same as the original bit, the majority amount received is taken as the original bit. 101 = 1. Good as corrects errors as well as spotting them. What is Check digit? *Ans* All numbers are added up, then the digits of the answer are added up, this is repeated until you are left with 1 digit. 3+4+2+8 = 17 1+7 = 8 What is Bit/ Colour depth? *Ans* Amount of bits used to represent all the colours of an image. 17 colours requires 5 bits. What is Metadata? *Ans* Data about an image/ other data. -Time, Bit depth, Size What is Analogue data? *Ans* It is infinite and represented in wave form What is Digital data? *Ans* Represented in binary, finite and can be processed by a computer