North Korea heavily monitors its people's internet access.
China has some monitoring.
C) Making a duplicate copy of the data and storing it in another location.
Answer:
SELECT
COUNT(SN), SUM(TaxAmount)
FROM ORDERS
or
SELECT
COUNT(SN) AS NumOrder, SUM(TaxAmount) As TotalTax
FROM ORDERS
Explanation:
Finding it difficult to add my explanation. So, I used an attachment instead
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Answer:
Data is transmitted from one computer to another through a process called serial transmittion
Serial data transmission sends data bits one after another over a single channel.
Hope this helps