Answer:
The correct answer is C. Sometimes.
Explanation:
A database index is a structure that aims to speed up selections and selective operations on a database. An index reduces the number of comparisons required to find one or more database records. This avoids having to perform a so-called full table scan, whereby all records in the table have to be run through sequentially.
Therefore, if the search does not focus correctly on the necessary data, this search will not always determine the index of the goal. Therefore, the user must correctly handle the search keywords to collaborate with the system.
Answer:
Modulus operator are useful in many circumstances and it is commonly used to generate the random number. It basically reduce the number into random number in a small range.
It also describe that whether, the one number is a factor of another or not.
In C language, the modulus operator provide the remainder after diving the greater value with the smaller value. If the smaller number are divided by the larger number then, the quotient become zero.
Answer:
<u>The correct answer is E. CRT.</u>
Explanation:
<u>CRT displays, also known as Cathode Ray Tube televisions</u> or tube televisions. This technology has been the longest in the market and its operation is simple. There is an electron beam that is emitted by a source, in this case the cathode ray tube that sweeps a photosensitive surface that reacts and draws on the screen the image we see on the TV.
We can mention the longevity, low cost maintenance and repair and the quality of reproduction of the colors as pros of this technology. On the other hand, the weight of the devices, the energy consumption and the analog technology are considered reasons to replace these devices with updated technologies like the other mentioned in the question.
