Which of the following reduces the amount of data that must be transmitted on a network by keeping a copy of recently transmitted data in memory?

A cloud service provider wants to offer hardened virtual server images for provisioning purposes. This will enable users to use only the operating system services that are allowed by the provider. Which of the following tasks are MOST appropriate for the hardening process? (Select TWO).

Before doing a change on a VM, a systems administrator wants to ensure there is an easy and fast way to rollback if needed. The change and testing should take approximately two hours. Which of the following is the EASIEST way to meet this requirement?

Company A recently acquired Company B.
A cloud administrator needs to give access to the accounting and time-reporting systems for Company B's employees. Company A's employees use a single account to access both systems. To give access to Company B's employees, the cloud administrator should:

A cloud engineer was recently hired at a company. The IT manager has tasked the cloud engineer to perform server maintenance in its public cloud. The cloud engineer is unaware of the process to perform the routine maintenance.
Which of the following should the technician do FIRST?