Consider the subject of DNS servers.Why would a host contact a DNS server?If a local DNS server does not know the IP address for a host name, what will it do?What kind of organization must maintain one or more DNS servers? Why?How does your organization protect itself from DNS cache poisoning? Do you think this is sufficient? Why or why not?please cite you work with acadmic resourse Write about 250 - 300 words

(1)The team has successfully examined the phases of a software development life cycle, defined the scope, and analyzed requirements for the project. Now you must begin your research into the Hadoop cloud environment to better understand what it takes to secure data in the cloud. To learn more about databases, review the following: Database ModelsDo some quick independent research on Hadoop and the cloud as it applies to this assignment.(2) Once the team members have completed their functional analysis and design in the previous step, provide a summary on analysis and planning for the evaluation of the technologies and/or techniques examined for protection of client data in transit. To prepare, click the following links and learn more about virtualization and cloud computing: Server Virtualization Benefits and Features of Cloud Computing Mobile Cloud Computing To be completed by a designated team member:Compare different technologies and techniques, including encryption, access control, and other technique; consider their efficiency, effectiveness, and other factors that may affect the security of the data in the cloud. Include your reasoning and conclusions in your evaluation. Conclude which is generally a better, stronger technique and why.You will include this summary in your report.In the next step, the team will work on system design specifications.(3) In the last step, the team completed an analysis of technologies and techniques. For this step, provide system design specifications for a data-in-transit protection model.Describe a fictitious infrastructure or model a real-world key management Infrastructure, citing sources using APA format.You will include these specifications in the final report.For the next step, the team is ready to explain the software development plan.

A small surgery center needs your help to create a database. The office manager has identified the following types of data (entities): patients, doctors, procedures and appointments using the following business rules:Patients can have many doctors and many doctors can see many patients.Patients can have many procedures and many procedures are done on patients.Doctors can have multiple appointments. (hint: these are many to many relationships, so associative tables need to be added)Please identify the attributes and primary keys needed for each of the entities.Identify the data types you would use for each of the attributes.Determine the relationships between the entities and find the one-to-many and many-to-many relationships.Use the ER matrix to determine the relationships.Create an ER diagram using Visio including the associative tables based on your analysis.Identify all foreign keys needed in the database design.Create the database and relationships in Access and populate the tables using the spreadsheets.To use the database as the main office application, what other entities and attributes might be needed?A 3-5 page APA paper discussing the following topics:Discuss Database impact on the workplace,Discuss database benefits when businesses use querie,Forms, and reports.Discuss at least two security concerns should be discussed with a proposed solution to mitigate the security issues.