1. Network ports are the entry points to a machine that is connected to the Internet. A service that listens on a port is able to receive data from a client application, process it and send a response back. Malicious clients can sometimes exploit vulnerabilities in the server code so they gain access to sensitive data or execute malicious code on the machine remotely. a. What is Port Scanning? b. Briefly explain any TWO (2) objectives of scanning. (2 Marks) (4 Marks) c. List and briefly explain THREE (3) types of scanning (9 Marks)