Redes2

Question 1

Its role is to protect an intranet by preventing unauthorized messages
leaving or entering.

Answer 1

Firewall

Question 1

The portability of many of these devices, together with their ability to
connect conveniently to networks in different places, make this type of
computing possible

Answer 1

Mobile computing

Question 2

It is the harnessing of many small, cheap computacional devices that are
present in user physical environments, including the home, office and
elsewhere.

Answer 2

Ubiquitous computing

Question 3

It is a portion of the Internet that is separately administered and has a
boundary that can be configured to enforce local security polices.

Answer 3

An intranet

Question 4

It is a vast interconnected collection of computer networks of many
different types, programs running on the computers connected to it
interact by passing messages, employing a common means of
communication.

Answer 4

The internet