Explain what PKI is. Note: don't just state that PKI is cryptography. Explain how the public and private key pair works. How does PKI can be used in an online contract to support Authenticity and Nonrepudiation. Explain how the public and private key makes authenticity verifiable and enables nonrepudiation.

Raveena is making a professional presentation for a newly launched product of her company. she wants to incorporate the following features in her presentation. a) to add serial numbers in each slide b) to add name of her company on top of each slide. c) to add the picture of her product on the second slide(the picture of her product is stored on her computer) write the commands/features of her presentation tool using which she can perform the above operations.

How can smart devices benefit businesses, organizations, and social communities in the global marketplace?

In excel, what happens to the cell contents when you click and drag a cell into multiple cells?