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- Retrofit vs Asynctask vs Volley
- android life cycle
- recyclerView vs listView
- aar
- diffrence of android version 5 6 7
- ndk
- native, hybrid, web app
- firebase
- android support library
- activity vs fragment
- FUSE
- realm vs sqlite
- gcm vs fcm
- RxAndroid, RxJava
- MySQL vs oracle
- rDBMS vs NoSQL
- aws vs gcp
- web network communication (주소 입력 시 일어나는 일들)
- paging
- vitual memory
- why use index on RDBMS
- log management
- monitoring
- Database Normalization
- Session vs Cookey
- Druid
- MVC
- MFC
- APM
- Apache Tomcat
- Rest(ful) API
- API
- CRUD
- OAuth 2.0
- thread life cycle
- spring
- deadlock
- JVM
- OSI7 Layer
- gradle
- maven
- TCP/IP vs UDP
- Thread vs Process
- VR vs AR vs MR
- git vs svn
- OOP
- AOP
- CheckedException vs UnCheckedException
- lambda or Functional language (Scala, etc..)
- c, c++, java
- script language
- object c vs swift
- d3.js
- java collection framework
- react.js vs angular.js
- MEAN
- why use C in algorithm
- backtracking
- best performance sort by insert, select, bubble
- worst case quick sort
- tree (b, b+, b- ...) 6.heap sort