운영체제
https://yozm.wishket.com/magazine/detail/1269/
TCP/IP
https://wormwlrm.github.io/2021/09/23/Overview-of-TCP-and-UDP.html
https://aws-hyoh.tistory.com/entry/TCPIP-%EC%89%BD%EA%B2%8C-%EC%9D%B4%ED%95%B4%ED%95%98%EA%B8%B0
자료구조/알고리즘
https://velog.io/@hyeseong-dev/%EC%9E%90%EB%A3%8C%EA%B5%AC%EC%A1%B0%EB%9E%80
https://bite-sized-learning.tistory.com/223
https://go-coding.tistory.com/4
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