1 page apa style

answer the folowing question in short way 

1/ Define what is Disaster Recovery Plan. Discuss Why is disaster recovery plan a 'must' for all organizations?List and discuss at least 4 important plans that must be included in any organizations Disaster Recovery Plan document.

2/What are the primary differences between a Business Continuity Plan (BCP) and a Disaster Recovery Plan (DRP)? Does your company have one or both in place? What are some of the challenges, barriers and industry accepted practices that impact your organization's BCP/ DRP?

3/ Discuss What is the difference between the ability of a manager to retrieve information instantly on demand using an MIS and the capabilities provided by a DSS? Provide real world example.