Answer:
require direct line-of-sight scanning.
Explanation:
Unlike radio frequency identification (RFID) tags, bar codes require direct line-of-sight scanning. Meaning you need a device that can scan the bar code and the scanner needs to be directly pointing at the barcode without anything in the way. This is because bar codes work by embedding the information in a design of lines that need to be scanned to retrieve the information. If anything gets in the way it interrupts the scanning process and the data is not correctly transmitted. RFID tags on the other hand do not need a direct line of sight since the information is transferred through radiofrequency. This allows the data to be transferred without a line of sight and at a distance of up to 300ft.
The correct answer for this question is this one: "a. wireless local area network (WLAN)."
<span>The technology that is predominately used for contactless payment systems is called the </span><u>wireless local area network (WLAN)</u><u />. It is even used now a days.
Hope this helps answer your question and have a nice day ahead.
In case the first drive fails, the data will all be backed up onto the second drive, a copy will still be intact.
Answer:
In a sentence: data is raw numbers, while information is organized data.
Explanation:
Data is a series of numbers or facts. A data set is a collection of data that are related (for examples all the students result in your last math exam). But it's not organized by itself... and rarely mean anything when looked at it in a raw manner.
To make sense of a data collection, you have to analyze it, calculate the mean or median of the data set for example... this is a treatment that has to be done to a data set to give it significance.. after such analysis, the result you have (mean, median, etc..) is a piece of information devired from the data.
Answer:
none of them
Explanation:
the resistor is connected to the + pole of the battery, no circuit shows that.
a 1kΩ resistor would be brown-black-red, not brown black black.
