A virus or malware appearing/pretending to be a legitimate program is called a Trojan.
Answer:
- import math
-
- def standard_deviation(aList):
- sum = 0
- for x in aList:
- sum += x
-
- mean = sum / float(len(aList))
-
- sumDe = 0
-
- for x in aList:
- sumDe += (x - mean) * (x - mean)
-
- variance = sumDe / float(len(aList))
- SD = math.sqrt(variance)
-
- return SD
-
- print(standard_deviation([3,6, 7, 9, 12, 17]))
Explanation:
The solution code is written in Python 3.
Firstly, we need to import math module (Line 1).
Next, create a function standard_deviation that takes one input parameter, which is a list (Line 3). In the function, calculate the mean for the value in the input list (Line 4-8). Next, use the mean to calculate the variance (Line 10-15). Next, use sqrt method from math module to get the square root of variance and this will result in standard deviation (Line 16). At last, return the standard deviation (Line 18).
We can test the function using a sample list (Line 20) and we shall get 4.509249752822894
If we pass an empty list, a ZeroDivisionError exception will be raised.
Answer:
B. Operational-level systems monitor the elementary activities and transactions of the organization.
Answer:
C. Resistor
Explanation:
A discrete component can be defined as any electronic component that are built as an individual or single unit.
Basically, a discrete component comprises of a single circuitry element, either an active element such as a vacuum tube, transistor etc or a passive element such as a resistor, diode, capacitor, inductor etc.
Hence, a discrete component is different from an integrated circuit (IC) or hybrid circuits because it is typically constructed or built with a single circuit element while integrated or hybrid circuits are constructed as a multiple unit.
Additionally, most discrete component are mainly semiconductors and as such consume large amounts of current.
