Answer: the correct answer is D. Spectrum Analyzer tool
Explanation:
A spectrum analyzer is a piece of electronic equipment that is used to gauge the magnitude (amplitude or strength) of a given input signal set against the full frequency range of the instrument. It is mainly used to measure the strength of the range of known and unknown signals.
Answer:
Electronic mail is a method of exchanging messages between people using electronic devices. Email entered limited use in the 1960s, but users could only send to users of the same computer, and some early email systems required the author and the recipient to both be online simultaneously, similar to instant messaging.
Answer:
Aggregate Function
.
Explanation:
The aggregate function returns the single value of the entire column of the database management system. The Aggregate Function is used in the SELECT statement and the GROUP BY clause.
The sum(),avg(), etc are some examples of Aggregate Function in the database with the help of aggregate function bobby gains the access to information above the usual clearance point. and summarizes the data.
Root is a term for android devices similar to "jailbreak" for Apple devices. Rooting gives you basically full control of your device but is considered to be a third party software because you are modifying the operating system. I would watch a YouTube video on how to root your device. I tried to root my device so I could get this screen recording app to work. I think it is really up to you because I think it avoids warranty.
