can some one plz tell me about cyber security, ethical hacking course deatials. and job opportunity?

Below are the topics covered in this course. There are wide range of opportunities in Cyber Security. 1: Getting Started with Ethical Hacking This chapter covers the purpose of ethical hacking, defines the ethical hacker, and describes how to get started performing security audits. 2: System Fundamentals This chapter presents a look at the various components that make up a system and how they are affected by security. 3: Cryptography This chapter explores the art and science of cryptography. You’ll learn how cryptography works and how it supports security. 4: Footprinting and Reconnaissance In this chapter, you’ll learn how to gain information from a target using both passive and active methods. 5: Scanning Networks This chapter shows you how to gain information about the hosts and devices on a network as well as what the information means. 6: Enumeration of Services In this chapter, you’ll learn how to probe the various services present on a given host and how to process the information to determine what it means and how to use it for later actions. 7: Gaining Access to a System This chapter shows you how to use the information gained from footprinting, Scanning, and earlier examinations in order to break into or gain access to a system. 8: Trojans, Viruses, Worms, and Covert Channels This chapter covers the varieties of malware and how each can be created, used, or defended against. 9: Sniffers This chapter discusses using packet sniffers to gather information that is flowing across the network. You’ll learn how to dissect this information for immediate or later use. 10: Social Engineering This chapter covers how to manipulate the human being in order to gain sensitive information. 11: Denial of Service This chapter includes an analysis of attacks that are designed to temporarily or permanently shut down a target. 12: Session Hijacking This chapter covers how to disrupt communications as well as take over legitimate sessions between two parties. 13: Web Servers and Web Applications This chapter explains how to break into and examine web servers and applications as well as the various methods of attack. 14: SQL Injection In this chapter, you’ll learn how to attack databases and data stores using SQL injection to alter, intercept, view, or destroy information. 15: Evading IDSs, Firewalls, and Honeypots This chapter covers how to deal with the common protective measures that a system administrator may put into place; these measures include intrusion detection system (IDSs), firewalls, and honeypots. 16: Physical Security The final chapter deals with the process of physical security and how to protect assets from being stolen, lost, or otherwise compromised read less