✅ What is the difference between random I/O and sequential I/O? random I/O: access data at arbitary locations on storage device no order WHERE, find with conditions need to skip several r...

✅ Can you explain what SQL is and how it differs from programming languages like C? Structured Query Language: declarative language to interact with RDB used to manage RDB such as INSERT, D...

✅ 파일시스템과 데이터베이스의 차이점에 대해서 설명해주세요. 파일시스템: manage data in files create, delete, update, search files 👎🏻 data redundancy: 같은 데이터가 여러번 중복해서 서로 다른 파일에 저장 👎🏻 data consistency 👎🏻 data integrit...

✅ Docker Compose docker container 여러개 띄우고 하나로 관리하고 싶을 때 여러개의 docker container들을 하나의 서비스로 정의하고 구성, 하나의 묶음으로 관리 👍🏻 easy to maintain several containers together 👍🏻 easier commands ☑️ Docke...

✅ Explain the structure of the JVM JVM: runtime engine that enables Java bytecode to be executed on any platform ClassLoader: load .class file into JVM Runtime data Area: memory Execution...

✅ Docker file docker file: file to create docker image docker image is created using docker file 이미 만들어진 image가 아니라, 내가 원하는 이미지를 만들고 싶을 수 있음 이때 사용하는 것이 docker file ☑️ FROM create ba...

✅ Docker volume command: -v volume: to save data on host memory can keep data regardless of container instead of container, save data on host memory ⚠️ if not use volume, when c...

✅ concurrency과 parralelism의 차이 concurrency: single core, multi thread, process takes turn looks like several jobs are done at the same time, but actually one job is done at once ...

✅ create image, container and run container -- create image, container and run container docker run nginx docker run mysql -- run docker in background run nginx -d nginx -- name container docker...

✅ JCF란 무엇인가요? Java collection framework handle data efficiently ✅ JCF의 계층 구조를 설명해주세요 Collection interface: List, Queue, Set Map: Map ✅ Map 인터페이스는 왜 Collection 인터페이스에 상속을 받지 않았나요...