| 2661 |
Unwanted bulk email messages, often advertisements, are called |
Computer Science/Informatics Practices
Threats and prevention |
Easy |
| 2662 |
A free game downloaded from an unknown site works normally but secretly lets an attacker access the computer.… |
Computer Science/Informatics Practices
Threats and prevention |
Medium |
| 2663 |
A college website becomes unreachable because thousands of infected computers send it requests at the same ti… |
Computer Science/Informatics Practices
Threats and prevention |
Medium |
| 2664 |
Which description best distinguishes eavesdropping from snooping? |
Computer Science/Informatics Practices
Threats and prevention |
Hard |
| 2665 |
What does a firewall do? |
Computer Science/Informatics Practices
Network security |
Easy |
| 2666 |
Which symbol in a browser's address bar usually indicates an HTTPS connection? |
Computer Science/Informatics Practices
Network security |
Easy |
| 2667 |
A company hires an expert to break into its own systems with permission and report weaknesses. This person is |
Computer Science/Informatics Practices
Network security |
Medium |
| 2668 |
Why should antivirus software be updated regularly? |
Computer Science/Informatics Practices
Network security |
Medium |
| 2669 |
Why is HTTPS preferred over HTTP when entering a password on a website? |
Computer Science/Informatics Practices
Network security |
Hard |
| 2670 |
Which Python library is mainly used for plotting graphs and charts? |
Computer Science/Informatics Practices
Python libraries for data |
Easy |
| 2671 |
What is the output of print(np.array([1, 2, 3]) * 2) after import numpy as np? |
Computer Science/Informatics Practices
Python libraries for data |
Easy |
| 2672 |
What is the shape of np.array([[1, 2, 3], [4, 5, 6]])? |
Computer Science/Informatics Practices
Python libraries for data |
Medium |
| 2673 |
What does np.arange(1, 10, 3) produce? |
Computer Science/Informatics Practices
Python libraries for data |
Medium |
| 2674 |
Which statement correctly contrasts a NumPy array with a Pandas DataFrame? |
Computer Science/Informatics Practices
Python libraries for data |
Hard |
| 2675 |
What are the index labels of pd.Series([3, 6, 9]) when no index is given? |
Computer Science/Informatics Practices
Series |
Easy |
| 2676 |
For s = pd.Series([10, 20, 30, 40], index=['a', 'b', 'c', 'd']), what is s['b']? |
Computer Science/Informatics Practices
Series |
Easy |
| 2677 |
For the same Series s with labels a to d, how many elements does s['a':'c'] contain? |
Computer Science/Informatics Practices
Series |
Medium |
| 2678 |
What does pd.Series([4, 8, 12, 16, 20]).tail(2) return? |
Computer Science/Informatics Practices
Series |
Medium |
| 2679 |
s1 = pd.Series([1, 2, 3], index=['a', 'b', 'c']) and s2 = pd.Series([10, 20], index=['b', 'c']). What is the … |
Computer Science/Informatics Practices
Series |
Hard |
| 2680 |
df = pd.DataFrame({'Name': ['A', 'B', 'C'], 'Marks': [70, 85, 60]}). What is df.shape? |
Computer Science/Informatics Practices
DataFrames |
Easy |