The answer is A. A firewall is a piece of software that monitors all connections to make sure no attacks can be made in the internal or external networks
The users will be able to quickly manage their finances, and track puchaces easier.
Obviously, they have to know your User ID and password.
Team Viewer is an effective tool that allows a zero configuration desktop session using a 3rd party server. When you install and run it, you are assigned an ID which is the username, and a password generated by team viewer broker servers. Whoever wishes to connect to a remote desktop must acquire the pin codes from the client. You cannot access a remote computer without both the username and the password of the client.