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)

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)

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

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)  

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

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

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)