Answer:
CENTREX systems reside at the service providers central office, and the operations and maintenance responsibilities belong to the service provider
Explanation:
CENTRal EXchange. Telephone company service that obviates the need of buying, maintaining, and upgrading a private branch exchange (PBX). Basically, Centrex service consists of ordinary trunk-lines to which several features are added by the phone company. While it is more economical than a PBX system, it often requires special telephone equipment for exploiting its features.
Based on the above definition, we can infer that CENTREX systems reside at the service providers central office, and the operations and maintenance responsibilities belong to the service provider is the correct option since features are usually added by the company.
Answer:
Biodegradable means it SHOULD be safe for the environment. Meaning it can break down into natural elements. However, this is uncertain as some materials don't break down as easily, with a possibility of not having much of a difference as non-biodegradable materials. It all depends on the product, but if we're going by the label, then by definition it's environmentally safe.
There will come a time when Moore's law can no longer hold true. Past a certain point, it will be physically impossible to make a transistor any smaller. Microscopic technology will always be limited by the size of an atom. Yes, Moore's law can be regarded as a self-fulfilling prophecy, because tech companies do not want to fail to keep up with it.
Answer:
A. PRL
Explanation:
Mobile phone technologies like CDMA , GSM etc, are used by cell/ mobile phone to transmit and receive signals. With the limitation of fluctuation, a mobile phone was made to adapt to this problems, thereby combining this broadbands like CDMA, GSM,4G LTE etc gave rise to PRL (Preferred roaming list) database to hold information needed to establish connection to the correct cell tower for these broadbands.
<span>The social commerce feature that includes a stream of events to create a history for friends to view is called a <u>timeline</u>.
You can see it on Facebook, or any other social media you use - timeline is where you can see what other people are doing, or where they can see what is happening in your life, if you choose to share that with your friends on a social media network of your choice.</span>
