Complete Question:
Assume that an array of Integers named a that contains exactly five elements has been declared and initialized. In addition, an int variable j has also been declared and initialized to a value somewhere between 0 and 3.
Write a single statement that assigns a new value to the element of the array indexed by j. This new value should be equal to twice the value stored in the next element of the array (i.e. the element after the element indexed by j ). Do not modify any other elements of the array!
Answer:
a[j] = 2 * a[j+1];
Explanation:
Since the array is named a and its indexes are referenced by the variable j
it means the elements of the array will be a[j] for (j=0; j=1;j=2).
The first element in the array (j=0) will be a[0], second element will be a[1] and so on.
The statement a[j] = 2 * a[j+1]; assigns a new value to the element of the array indexed by j, the value is equal to twice the value stored in the next element of the array (j+1).
Answer:
Towers and satellite.
Explanation:
Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.
Generally, the most commonly used electromagnetic wave technology in telecommunications is radio waves.
Radio waves can be defined as an electromagnetic wave that has its frequency ranging from 30 GHz to 300 GHz and its wavelength between 1mm and 3000m. Therefore, radio waves are a series of repetitive valleys and peaks that are typically characterized of having the longest wavelength in the electromagnetic spectrum.
Basically, as a result of radio waves having long wavelengths, they are mainly used in long-distance communications such as the carriage and transmission of data.
The distance from one peak to the next peak is called wavelength. This distance is also equal to the distance from one trough of a wave to another.
Also, microwave is a form of radio waves which typically has short wavelengths and frequency ranging from 300 MHz and 300 GHz.
Hence, microwave transmits information between network nodes using towers and satellite.
Answer:
The answer to this question is option "d".
Explanation:
In this question, the answer is data mining. Because Data mining is a technique that finds a piece of new information in a lot of the data. In the data mining collecting information from data is hopefully both new and useful. Data mining help us to discover new patterns and relationship in data to help make better decisions. It is used everywhere like Television and radio, Banking, Retail, and business. That's why data mining is useful.
Answer:
HTML, CSS, JavaScript, python, SQL
Explanation:
To create a web page for her travel adventures Dani has to use HTML and CSS to design the page's layout. A beautiful simple design such as one which shows photos of her on her travel destinations, and a paragraph for her to write a little story on her travels would do.
Dani needs JavaScript to animate the photos she's going to post on the page. Dani also should use python to build the backend of her page so she can write codes to save and access her documented adventures from the database. She should use a database language like SQL to save all of her adventures so she can view them at a later time for the memories.
