What is the main function of Oplog?

A prospect facing an upcoming Vmware ELA renewal has a management directive to move to the public cloud due to perceived cost savings. Their virtualization team is currently struggling with refactoring applications for AWS. As a result, the virtualization team is pushing to evaluate VXRail and renew their VMware ELA.
Which two aspects of Nutanix shoud the SE Highlight? (Choose two)

A customer who uses Nutanix for mission critical workloads is considering migrating public cloud workloads to Nutanix. The customer has experienced difficulty auditing where applications reside and understanding cloud costs on a per application basis.
Which Nutanix product should be discussed to address the customer'sneeds?

A customer's current AHV cluster for mixed server workloads consists of 7 NX-3060-G6 nodes with intel Skylake processors spread across two blocks. Growing demand for resources requires the customer to order three additional NX-3060-G7 nodes with Intel Cascade Lake processors. Which supported approach allows the customer the most efficient use of their additional resources?

An administrator is managing a highly active SQL workload that is writing I/Os in 2 MB chunks to a vDisk.
The administrator wants to optimize capacity setting for the computer.
Which storage optimization technology should the administration select to meet these requirement?