Just answer please cauze have time limit.

1) ______ combination of hardware and software that prevent unauthorised from accessing private networks.

Select one:

a. Firewall

b. Security system

c. Biometric authentication

d. Antispyware

2) _______ moment when the specific technological hit mainstream society.

Select one:

a. Revolution

b. Megatrends

c. Tipping point

d. Industry revolution

3) The IT infrastructure consist several components. All of statements below are TRUE about IT infrastructure, EXCEPT:-

Select one:

a. Data management

b. Network

c. Hardware

d. Security system

4) Why systems are vulnerable?

Select one:

a. b. Misplace the portable devices

b. d. All of above (a, b & c)

c. a. Threat by flood or earthquake

d. c. The software problem/error