1)indexes

a numerical scale used to compare variables with one another or with some reference number
vocabulary set #4:

file transfer protocol

protocol that allows users to copy files between their local system and any system they can reach on the network.
google.com

domain

A domain contains a group of computers that can be accessed and administered with a common set of rules. 
techterm.com

digital certificate

 data file that is issued by a Certification Authority to an individual to identify them to online services. 

cookie

a short line of text that a web site puts on your computer's hard drive when you access the web site
google.com

client

any computer that is hooked up to a computer network

an interactive technology used to run programs over the internet
Google.com

Google.com