Answer:
Ransomware is malicious software that infects your computer and displays messages demanding a fee to be paid in order for your system to work again. It has the ability to lock a computer screen or encrypt important, predetermined files with a password.
Explanation:
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The most likely problem which led to the lack of sound after the installation of the new sound card is that the '<em>sound card is not recognized or incompatible</em> '
- The sound card is an hardware which is installed into a computer in other to allow the the system produce audio signal.
- Without a sound card installed into a computer, then such computer would not be able to perform <em>audio</em> <em>input or produce audio signals</em>.
However, when a sound card is present and, the computer fails to produce audio signal, then the most likely problem is that, the <em>sound card installed isn't recognized</em>.
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Answer:
4. Supervised learning.
Explanation:
Supervised and Unsupervised learning are both learning approaches in machine learning. In other words, they are sub-branches in machine learning.
In supervised learning, an algorithm(a function) is used to map input(s) to output(s). The aim of supervised learning is to predict output variables for given input data using a mapping function. When an input is given, predictions can be made to get the output.
Unsupervised learning on the other hand is suitable when no output variables are needed. The only data needed are the inputs. In this type of learning, the system just keeps learning more about the inputs.
Special applications of supervised learning are in image recognition, speech recognition, financial analysis, neural networking, forecasting and a whole lot more.
Application of unsupervised learning is in pre-processing of data during exploratory analysis.
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A light bulb is usually powered by a wire producing electricity. The energy can also come from wind turbines or solar panels.
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