: 1a. What is a digital security risks? Briefly explain two digital security risks. [10 marks] b. What is the difference between a firewall and an anti-virus [10 marks] c. State two ways through which information privacy can be protected amongst internet users. [10 marks]

2. a) Briefly explain the following; i) Bluetooth ii) The internet iii) Web browser iv)RFID v) Wi-Fi [10 marks]

4.Define the following as they pertain to encryption: plaintext, ciphertext, encryption algorithm, encryption key. Differentiate between private and public key encryption. [10 marks]

5. Describe and list advantages and disadvantages of each of the following backup types: full, differential, incremental, selective, CPD, and cloud. [10 marks]

6. Describe the following game controllers: gamepad, joystick, wheel, dance pad, motion-sensing game controller, and balance board. [10 marks]

7. List guidelines for purchasing a smartphone. [10 marks]

8. Describe how the following industries use motion input: entertainment, military, athletics, and medical.