Hey there!
For this answer, Choice B. or the second option is the best answer!
Hope this helps. Let me know if there is anything else.
Skype isn't a cloud based system. Cloud based systems are online storage systems. Google Drive, Dropbox, and SkyDrive are all pieces of software which allow you to store data on a remote server over the internet. Skype is just a program.
Answer:b)Reserve Room, Enter Contact Information, Enter Reservation Detail
Explanation: The use case is described as actors , actors goal, usage of use cases, units of scope and initial point and terminating point of use cases .
The situation mentioned in the question will take place for the reservation of the room through the instances in the form like filling the contact details for the identification , filling out reservation information as well for getting the knowledge about the room requirement by the person.
These details help in reaching out the particular person if required, number of days he wants to book the room,any extra facility he would like to have etc. After these detail filling activity the room can be reserved successfully.Thus , the most appropriate option is option (b).
Other options are incorrect because room reservation cannot be done without any formality as mentioned in the question and entering contact detail and reservation detail one by one.
Answer: Amazon DynamoDB
Explanation: Amazon DynamoDB(Database) is the database that works in quick speed of milliseconds at any area.It has the characteristics like built-in security section, manageable, restoration function, durable etc.These features helps in handling the request of numerous people on large scale everyday.
It can work in multiple region to and can have multiple master .Thus, the database demand mentioned in the question can be completed by using Amazon DynamoDB as it can fulfill the requires of the company.