Which domain is tested in the CompTIA A+ 220-901exam?

A. Windows Operating Systems
B. Security
C. Networking
D. Operational Procedures


Answer: C

Computer Science & Information Technology

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Give an example of a schedule that could be produced at SNAPSHOT isolation in which there are two transactions that execute concurrently but do not have the same snapshot number and do not see the same snapshot of the database. (Hint: the schedule can contain more than two transactions.)

What will be an ideal response?

Computer Science & Information Technology

Which of the following terms is defined as consolidating multiple layers into a single layer?

A. transform B. join C. merge D. couple

Computer Science & Information Technology

Which is NOT a component of a database that describes how data is stored?

a. field b. record c. table d. report

Computer Science & Information Technology

Which of the following is referred to as the guest operating system when using virtualization software?

a. OS running on the physical machine b. OS that is available through multiboot installations c. OS running on the virtual machine d. OS that is accessed remotely

Computer Science & Information Technology