Answer:
4
Explanation:
 For easier management of the host records of the company 4 zones should be used because 
 subdomain is part of a larger domain and the main domain which is the primary domain is the name which the company have decide to use which will represent the company website address and in a situation where the company 
have different domain names in which they had registered, they will need to choose one among the domain which will inturn be their main domain.
Therefore for easier , efficient and effective management of the host records 4 zones will be the best zones to be used.
Example of sub domain is north.example.com
 
        
             
        
        
        
Answer:
E)nXML
Explanation:
XML is a short for Extensible Markup Language. It is a markup language like the Hypertext markup language (HTML) and are both used in the development of web applications. However while the HTML describes the content of the Web page that is the graphics, images and videos and how they are displayed, the XML handles the description of data and information formats, their storage and the transportation and sharing over the internet.
 
        
                    
             
        
        
        
The case that will benefit from Explainable Artificial Intelligence (AI) principles is a doctor who depends on AI to make diagnosis.
Using Explainable Artificial Intelligence principles of supported evidence, understandable and accurate explanations, and knowledge limit as designed for AI, will save the doctor and all medical staff enormous amount of time.
Explainable Artificial Intelligence enables all medical staff to focus on correct medical interpretation and treatment instead of wasting time on repetitive medical tasks.
In comparison, the medical doctor will benefit more than a music streaming platform recommending a song, a navigation platform suggesting fastest routes, or a social media platform that identifies faces from a picture.
Thus, a medical doctor will find Explainable Artificial Intelligence principles useful to reduce some of the repetitive tasks that she undertakes, thereby focusing her attention on providing appropriate medical care to the patients.
Learn more about Explainable Artificial Intelligence here: brainly.com/question/22650312
 
        
                    
             
        
        
        
Explanation:
Answer in the attached image...
hope it helps
 
        
             
        
        
        
<u>Explanation</u>:
The establishment of the Abacus brought about one of the first counting device (calculator). This device was a mechanized computer that supported numeric calculations. However<u>, the process was entirely manual and mechanized. </u>This innovation led to;
First-generation  of computers, although not entirely manually operated like Abacus, made use of vacuum tubes, were very big in size and could store only a small amount of information.
Second Generation of computers 
unlike the first generation that uses vacuum tubes, this one came with new technology; the use of transistors. The computers were smaller in size than vacuum tubes. 
Third Generation  computers made use of IC (Integrated circuits) for the first time. Contained higher storage capacity and was more reliable than previous generations.
Fourth Generation computers became known as the personal computer generation. This generation brought the use of personal computers on a personal level as they use microprocessors, was easy to carry about, had larger storage capacity and faster speed of operations.
Fifth-generation of computers is known as the age of artificial intelligence. These computers were programmed with the ability to make decisions just like a human being would.