To view details about workbook changes, including insertions and deletions, you can control the collaboration process by using Excel's ________

Page numbers can be formatted by clicking on the text box and selecting formatting icons in the ________ tab

Fill in the blank(s) with correct word

After creating a new AWS account, you use the API to request 40 on-demand EC2 instances in a single AZ. After 20 successful requests, subsequent requests failed. What could be a reason for this issue, and how would you resolve it?

A. You encountered a soft limit of 20 instances per region. Submit the limit increase form and retry the failed requests once approved. B. AWS allows you to provision no more than 20 instances per Availability Zone. Select a different Availability Zone and retry the failed request. C. You need to use Amazon Virtual Private Cloud (VPC) in order to provision more than 20 instances in a single Availability Zone. Simply terminate the resources already provisioned and re-launch them all in a VPC. D. You encountered an API throttling situation and should try the failed requests using an exponential decay retry algorithm.