Answer:
Cloud Computing
Explanation:
Cloud Computing is basically an infrastructure to deliver various computing resources and services to the users online (via Internet). These resources include networks, applications, servers, databases, software, storage etc.
These services are mostly utilized by organizations for recovery and backup of data, using virtual hardware and other computing resources such as desktops, memory etc. Cloud computing is also used for developing software, for securing data by providing with access control and for storing bulk of data.
The benefits of cloud computing are as following:
Because of cloud computing the customers do not have to buy hardware or install software on their computer which might be very costly to maintain and update. Servers and data centers are provided by cloud service providers and experts are available for managing the services and resources.
These services are scalable and can be adjusted as per the users requirements.
Cloud computing offers a variety of protocols, tools, and access controls that improve security and protects confidential data, applications, and networks against security threats and attacks. It also provides with data backup, disaster recovery.
Answer:
The answer is "5 users and 1 block".
Explanation:
In Option a:
Bandwidth total 
Any User Requirement 
The method for calculating the number of approved users also is:
Now, calculate the price of each person for overall bandwidth and demands,


In Option b:



mean user 

max user 

Answer:
A wave of sound!
Explanation:
sound waves are sound but sound comes in different wavelengths
The answer is If a skin or blood TB test is posittive, your doctore mau give you a chest X-ray. They will look for abnormal spots on your lungs or any changes caused by TB.