Programming & Computer Science Answers

What could be the risks that the company is facing as a result of these technologies?

Explain the latest technologies and trends in protection of data and IT systems

What kind of loopholes in organisational IT systems attract hackers

Which of the following statements is incorrect?

A. We can use s.iteritems() on a pd.Series object s toiterate on it

B. If s and s1 are two pd.Series objects, we cannot use s.append(s1) to directly append s1 to the existing series s

C. loc and iloc are two useful and commonly used pandas method

D. If s is a pd.Series object, then we can use s.loc[label] to get all the data where the index is equal label

1. Which of the following can be used to create a DataFrame in Pandas?

A. Pandas Series object
B.2D ndarray
C. Python dict
D. All of the above

2. For the Series s1 and s2 defined below, which of the following statements will give an error?

import pandas as pd
s1 = pd.Series({1: 'Alice', 2: 'Jack', 3: 'Molly'})
s2 = pd.Series({'Alice': 1, 'Jack': 2, 'Molly': 3})

A. s2.loc[1]
B. s1.loc[1]
C. s2[1]
D.s2.iloc[1]

1. import pandas as pd
d = {
'1': 'Alice',
'2': 'Bob',
'3': 'Rita',
'4': 'Molly',
'5': 'Ryan'
}
S = pd.Series(d)

In the above python code, the keys of the dictionary d represent student ranks and the value for each key is a student name. Which of the following can be used to extract rows with student ranks that are lower than or equal to 3?

A. S.loc[0:2]
B. S.loc[0:3]
C. S.iloc[0:3]
D. S,ilo[0:2]

1. What will be the output of the variable L after the following code is executed?

import re

s = 'ACAABAACAAAB'
result = re.findall('A{1,2}', s)
L = len(result)

A. 5
B. 8
C. 12
D. 4

1. Which of the following is the correct output for the code given below?

import numpy as np

old = np.array([[1, 1, 1], [1, 1, 1]])
new = old
new[0, :2] = 0
print(old)

A. [[1 1 1 ] [ 1 1 1]]
B. [[0 0 1] [ 1 1 1]]
C. [[0 1 1] [ 0 1 1]]
D.[[1 1 0] [ 1 1 0]]

2.

import re
s = 'ACBCAC'

For the given string, which of the following regular expressions can be used to check if the string starts with 'AC'?

A. re.findall('[^A]C', s)
B. re.findall('^[AC]', s)
C. re.findall('^AC', s)
D.re.findall('AC', s)

Consider the following variables in Python:

a1 = np.random.rand(4)
a2 = np.random.rand(4, 1)
a3 = np.array([[1, 2, 3, 4]])
a4 = np.arange(1, 4, 1)
a5 = np.linspace(1 ,4, 4)

Which of the following statements regarding these variables is correct?

A. a3.shape == a4.shape
B. a4.ndim() == 1
C. a5.shape == a1.shape
D. a1.shape == a2.shape

What is the difference between the following three statements?
cout<<'A';
cout<<"A";
cout<<A;