Q:

A firewall is a software tool which protects:
 (I) Server
 (II) Network
 (III) Fire
 (IV) Personal computer
 The correct answer is from the options given below:

• 1
  (I), (III) only
• 2
  (II), (III) only
• 3
  (I), (II), (III) only
• 4
  (I), (II), (IV) only