The user interface is a layer of ________ objects that manage ...

[cherise1989]

The user interface is a layer of ________ objects that manage interaction with the user.
 
  A) control
  B) boundary
  C) utility
  D) virtual

Question 2

Which of the following is a valid type of system interoperability?
 
  A)
 
  a two-way flow of messages between user applications
  B)
 
  transparent communications between systems using system protocols
  C)
 
  internal power dissipation from computing cycles
  D)
 
  All of the above are valid.

[kjo;oj]

Answer to Question 1

B

Answer to Question 2

C

[cherise1989]

Thanks for the timely response, appreciate it

[samiel-sayed]

Gracias!