4.9 A firewall is hardware and/or software placed between the user’s computer and an external network such as the Internet to filter data in and out of the computer. Give one function of a firewall. (1)

5.4   Computers need this small circuit board to connect to the Internet   (1)

3.11 Data stored that is lost when the computer is switched off and work is not saved. (1)

4.4   What is the essential difference between a PAN and a LAN? Do not just give the definition of the acronym as an answer.   (4)

4.2 For a file to be transmitted from the sender to the receiver, protocols are put in place. Why is this necessary?   (1)

6.4   Give three functions of an operating system. (3)

5.5 A company that provides an internet connection for a monthly fee. (1)  

2.6   Write the function used to get the answer in cell B14 (2)

3.3 What is the purpose of a Primary Key? (1)

QUESTION 3 Multiple Choice Question. Choose the correct answer for each question 3.1 Memory that is lost when the computer is switched off and work is not saved. (1)