Used for monitoring web activity by users to make sure that sensitive information won't leave the building. A, Web server
B, FTP server
C, POP server
D, Proxy server ​

PROXY

Explanation:

The basic objective of the web server is to store, process and deliver web pages to the users.

FTP server is to allow users to upload and download files. An FTP server is a computer that has a file transfer protocol (FTP) address and is dedicated to receiving an FTP connection. FTP is a protocol used to transfer files via the internet between a server (sender) and a client (receiver)

pop provides access via an Internet Protocol (IP) network for a user client application to a mailbox (maildrop) maintained on a mail server

proxy server is a system that isolates internal clients from the servers by downloading and storing files on behalf of the clients. it intercepts requests for web-based or other resources that come from

answer; i believe the correct answer is layers;

true

  **