There are various kinds of network media and each one of them has different features and benefits. Some have different characteristics and not all of them are meant to perform the same purpose. While choosing network media, a number of criteria must be met. These criteria include:
The distance the selected medium can successfully carry a signal.
The environment where the selected medium is to be installed
Explanation:
The distance the selected medium can successfully carry a signal – The type of network media you choose depends on the distance it can cover before you install signal boosters or repeaters. Repeaters are used to regenerate signals that are required to cover greater distances. A UTP cable as compared to fiber is more prone to interference like noise and the distance it covers before a signal repeater is installed is shorter. Fiber cable is considered the best for distances as it can cover longer distances.
Environment should also be considered when choosing network media - If your network is setup in a place where there is too much electromagnetic field being generated, then you may be required to purchase fiber optic cables. Fiber optics are immune to such interference.
Learn about network media 
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Answer:
"NOT lookup
" is the correct approach.
Explanation:
- This methodology significantly reduces the quantity of congestion of DNS messages on a certain file. The application establishes that whenever a question reaches if it is processed. Unless the file is loaded, then perhaps the response is returned with the cached cache.
 - Typically the name resolution occurs in something like a DNS File. The conversion usually occurs throughout this cycle from Username to IP, including IP via Username.
 
 
        
             
        
        
        
Hi. I am not sure if there should be choices included in your post. If there is none, I'll just share a circumstance to where a professional practices confidentiality as an answer. 
Counselors or psychotherapists can only divulge information about their clients or patients if there is a court order or if the client will harm him/her self or plan to harm others. Primarily, they are to respect the client's choice to keep the sessions with full confidentiality. 
        
             
        
        
        
The answer you're looking for is
Rootkit
I hope this helps! :)