https://leetcode.com/problems/add-two-numbers/ Add Two Numbers - LeetCode Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview. leetcode.com 난이도: Medium You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a sin..

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https://leetcode.com/problems/search-insert-position/ Search Insert Position - LeetCode Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview. leetcode.com 난이도: Easy Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted ..
OSI 7 layer L1 L2 L3 L4 L5 L6 L7 Physical Data Link Network Transport Session Presentation Application TCP/IP 4 layer Network Access Internet Transport Application 1) Network Access 물리적 연결. 오류 제어, 흐름 제어. ARP(Address Resolution Protocol) IP 주소와 MAC 주소 대응 ARP spoofing 내부 네트워크에 자신을 게이트웨이라고 속이는 spoofing 메시지를 지속적으로 전달, 다른 메시지 도청 STP(Spanning Tree Protocol) L2 bridge에서 루프 발생 방지를 위해 사용 루프를 구성하는 여러 포트 중..