| 151 |
Which measure of central tendency is least affected by a few extreme values? |
Computer Science/Informatics Practices
Interpreting data |
Easy |
| 152 |
A value that lies far away from the other values in a data set is called |
Computer Science/Informatics Practices
Interpreting data |
Easy |
| 153 |
Monthly salaries (in thousand rupees) in a small office are 12, 15, 11, 14 and 98. Which value best represent… |
Computer Science/Informatics Practices
Interpreting data |
Medium |
| 154 |
Two players have the same average score over ten matches, but player P has a much smaller standard deviation … |
Computer Science/Informatics Practices
Interpreting data |
Medium |
| 155 |
Data shows that ice cream sales and the number of people swimming both rise in the same months. Which conclus… |
Computer Science/Informatics Practices
Interpreting data |
Hard |
| 156 |
Which mode of communication allows data to flow in both directions, but only one direction at a time? |
Computer Science/Informatics Practices
Communication concepts |
Easy |
| 157 |
In which unit is the data transfer rate of a channel usually measured? |
Computer Science/Informatics Practices
Communication concepts |
Easy |
| 158 |
How long does it take to send a 96 megabit file over a link with a data transfer rate of 12 Mbps? |
Computer Science/Informatics Practices
Communication concepts |
Medium |
| 159 |
In which switching technique is a dedicated path reserved between sender and receiver for the entire session? |
Computer Science/Informatics Practices
Communication concepts |
Medium |
| 160 |
Which statement about packet switching is correct? |
Computer Science/Informatics Practices
Communication concepts |
Hard |
| 161 |
Which transmission medium carries data as pulses of light? |
Computer Science/Informatics Practices
Transmission media |
Easy |
| 162 |
Which wireless medium is used by a typical TV remote control? |
Computer Science/Informatics Practices
Transmission media |
Easy |
| 163 |
Why are wires in twisted pair cables twisted together? |
Computer Science/Informatics Practices
Transmission media |
Medium |
| 164 |
Two buildings 2 km apart in an industrial area with heavy electrical machinery must be linked at very high sp… |
Computer Science/Informatics Practices
Transmission media |
Medium |
| 165 |
Which property distinguishes microwave transmission from radio wave transmission in general use? |
Computer Science/Informatics Practices
Transmission media |
Hard |
| 166 |
Which generation of mobile technology was analog and supported only voice calls? |
Computer Science/Informatics Practices
Mobile telecommunication |
Easy |
| 167 |
Text messaging (SMS) was introduced with which generation of mobile technology? |
Computer Science/Informatics Practices
Mobile telecommunication |
Easy |
| 168 |
Which feature is especially associated with 5G compared with earlier generations? |
Computer Science/Informatics Practices
Mobile telecommunication |
Medium |
| 169 |
Why are mobile phones also called cellular phones? |
Computer Science/Informatics Practices
Mobile telecommunication |
Medium |
| 170 |
Which generation was the first to be based entirely on Internet Protocol (IP) for both voice and data, enabli… |
Computer Science/Informatics Practices
Mobile telecommunication |
Hard |
| 171 |
Which protocol is used to send email messages to a mail server? |
Computer Science/Informatics Practices
Network protocols |
Easy |
| 172 |
Which protocol is mainly used to upload and download files between computers? |
Computer Science/Informatics Practices
Network protocols |
Easy |
| 173 |
A user reads email on a phone and a laptop and wants messages to stay on the server and appear the same on bo… |
Computer Science/Informatics Practices
Network protocols |
Medium |
| 174 |
What is the main job of the Internet Protocol (IP)? |
Computer Science/Informatics Practices
Network protocols |
Medium |
| 175 |
Which protocol is designed to connect two directly linked nodes, such as a home computer dialling an Internet… |
Computer Science/Informatics Practices
Network protocols |
Hard |
| 176 |
Which malware spreads across a network by itself without attaching to any host file? |
Computer Science/Informatics Practices
Threats and prevention |
Easy |
| 177 |
Unwanted bulk email messages, often advertisements, are called |
Computer Science/Informatics Practices
Threats and prevention |
Easy |
| 178 |
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 |
| 179 |
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 |
| 180 |
Which description best distinguishes eavesdropping from snooping? |
Computer Science/Informatics Practices
Threats and prevention |
Hard |
| 181 |
What does a firewall do? |
Computer Science/Informatics Practices
Network security |
Easy |
| 182 |
Which symbol in a browser's address bar usually indicates an HTTPS connection? |
Computer Science/Informatics Practices
Network security |
Easy |
| 183 |
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 |
| 184 |
Why should antivirus software be updated regularly? |
Computer Science/Informatics Practices
Network security |
Medium |
| 185 |
Why is HTTPS preferred over HTTP when entering a password on a website? |
Computer Science/Informatics Practices
Network security |
Hard |
| 186 |
Which Python library is mainly used for plotting graphs and charts? |
Computer Science/Informatics Practices
Python libraries for data |
Easy |
| 187 |
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 |
| 188 |
What is the shape of np.array([[1, 2, 3], [4, 5, 6]])? |
Computer Science/Informatics Practices
Python libraries for data |
Medium |
| 189 |
What does np.arange(1, 10, 3) produce? |
Computer Science/Informatics Practices
Python libraries for data |
Medium |
| 190 |
Which statement correctly contrasts a NumPy array with a Pandas DataFrame? |
Computer Science/Informatics Practices
Python libraries for data |
Hard |
| 191 |
What are the index labels of pd.Series([3, 6, 9]) when no index is given? |
Computer Science/Informatics Practices
Series |
Easy |
| 192 |
For s = pd.Series([10, 20, 30, 40], index=['a', 'b', 'c', 'd']), what is s['b']? |
Computer Science/Informatics Practices
Series |
Easy |
| 193 |
For the same Series s with labels a to d, how many elements does s['a':'c'] contain? |
Computer Science/Informatics Practices
Series |
Medium |
| 194 |
What does pd.Series([4, 8, 12, 16, 20]).tail(2) return? |
Computer Science/Informatics Practices
Series |
Medium |
| 195 |
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 |
| 196 |
df = pd.DataFrame({'Name': ['A', 'B', 'C'], 'Marks': [70, 85, 60]}). What is df.shape? |
Computer Science/Informatics Practices
DataFrames |
Easy |
| 197 |
Which statement adds a new column named City to an existing DataFrame df with three rows? |
Computer Science/Informatics Practices
DataFrames |
Easy |
| 198 |
Which statement removes the column Grade from df and returns the result? |
Computer Science/Informatics Practices
DataFrames |
Medium |
| 199 |
A DataFrame has 4 rows and 3 columns. What is the shape of its transpose df.T? |
Computer Science/Informatics Practices
DataFrames |
Medium |
| 200 |
df has shape (3, 3). The statement df2 = df.drop('Grade', axis=1) is run. What are the shapes of df and df2? |
Computer Science/Informatics Practices
DataFrames |
Hard |