Answer:
Cell.
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.
In the field of telecommunication, all telecommunication setup are designed and developed to make use of two network devices: one device is typically used for the transmission of data while the other device is used to receive data that are sent on the network.
Generally, cell towers are tall poles that are used to transmit frequencies to mobile phones.
Is there more to this or ?
Answer:
D. THE PRESENCE OF TRAFFIC LIGHTS
Explanation:
THEY HELP GUIDE US AND HELP US BE MORE AWARE OF TRAFFIC.
Answer:
d. all of the above
Explanation:
Google filetype operator enables restricting the search results to the specified file type. For example if you are searching for Eiffel Tower and you want to restrict the results to pdf files then the query will be of the form Eiffel Tower filetype:pdf . Similarly for text file results you need to specify the search query as Eiffel Tower filetype:text. The Google filetype operator supports several different file types.
