Which of the following BEST describes the team that acts as a referee during a penetration-testing exercise?

A financial institution would like to store its customer data in a cloud but still allow the data to be accessed and manipulated while encrypted. Doing so would prevent the cloud service provider from being able to decipher the data due to its sensitivity. The financial institution is not concerned about computational overheads and slow speeds. Which of the following cryptographic techniques would BEST meet the requirement?

A company wants to modify its current backup strategy to modify its current backup strategy to minimize the number of backups that would need to be restored in case of data loss. Which of the following would be the BEST backup strategy

A user reports trouble using a corporate laptop. The laptop freezes and responds slowly when writing documents and the mouse pointer occasional disappears.
The task list shows the following results

Which of the following is MOST likely the issue?

A security administrator is managing administrative access to sensitive systems with the following requirements:
* Common login accounts must not be used for administrative duties.
* Administrative accounts must be temporal in nature.
* Each administrative account must be assigned to one specific user.
* Accounts must have complex passwords.
" Audit trails and logging must be enabled on all systems.
Which of the following solutions should the administrator deploy to meet these requirements? (Give Explanation and Reference from CompTIA Security+ SY0-601 Official Text Book and Resources)