10x: check information 20x: communication success 30x: redirect 40x: client error 50x: server error ✔️ 20x: communication success ✔️ 30x: redirect ✔️ 40x: client error ✔️ 50x:...

✅ Attacks and Vulnerabilities

✅ Threat Actors

✅ Fundamentals of security

✅ Serialization converting the state of an object into a byte stream all PCs would have different virtual memory according to their OS so reference types cannot travel across a network,...

✅ Call by Value when method is called, memory is allocated Call by Value copys the value of variable as method parameter local value(does not change value within the method) case of...

❤️ Imperative 명령형 🆚 Declarative focus more on how Procedural Programming OOP 💙 Declarative 선언형 🆚 Imperative program by expressing logic of computation withoug talking about co...

☑️ Sequential Programming program runs by order unstructued programming 👎🏻 if need code from before, use goto need to pay attention to flow(in what order will this code be run), instead o...

☑️ Background before, developing was done through thourough planning however, these days, everything changes so fast, so many requirements, so many feedbacks before: lets plan and do agil...

✅ TDD Test Driven Development first test ➡️ then develop 👍🏻 check error simultaneously short development cycle, easier to update to client needs use automation(Junit) documentatio...