The answer is (data) abstraction!
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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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The correct answer is B. Primary DNS Server.
DNS records are type of data that is equivalent to IP address where the website or domain is located. DNS records are normally stored in DNS server in a raw or flat file. A host, using port number 53 will send a DNS request to the server. If the computer has stored it's data or record in it's database, it will automatically reply to the requesting host. Example: You typed in www.website.com, if you have a matching DNS record in your server, using an IP address, your server will reply and display the website.
Answer:
7. There are different tools needed in repairing computer, which of the following categories does parts retriever, screw driver, wire cutter and long nose plier belongs?
D. Hand tools
8. Which of the following hand tools also known as nut driver?
B. hex driver
9. Which of the following tools does NOT belong to cleaning tools?
A. anti-static wrist strap
10. When cleaning computer system unit, which of the following tools is best used to blow
away dust in electronic components?
A. compressed air
Explanation:
