A-tier design includes a middle layer between the client and server that processes the client requests and translates them into data access commands that can be understood and carried out by the server.

a. two
b. one
c. four
d. three

you have to email it to yourself from your phone then download it to either google drive or you computer files. then you can go to where ever you saved it and select it and then copy and paste it. or you could attach it to your question when you are writing it which would be much easier. for example: go to the attachment.

it is a requirement to graduate high school where i live

check the image attached

some main parts enter backspace caps lock shift and ctrl

the answer is d.

by: nicholas dooley