So Hee Park Lee

KOCW_I/O System

โœ… Disk Structure โœ”๏ธ logical block ๋””์Šคํฌ์˜ ์™ธ๋ถ€์—์„œ ๋ณด๋Š” ๋””์Šคํฌ์˜ ๋‹จ์œ„ ์ •๋ณด ์ €์žฅ ๊ณต๊ฐ„ ์ฃผ์†Œ๋ฅผ ๊ฐ€์ง„ 1์ฐจ์› ๋ฐฐ์—ด์ฒ˜๋Ÿผ ์ทจ๊ธ‰ ์ •๋ณด๋ฅผ ์ „์†กํ•˜๋Š” ์ตœ์†Œ ๋‹จ์œ„ CPU๋Š” logical block์— ๋ช…๋ น์„ ๋‚ด๋ฆฌ๊ณ (track๋ฒˆํ˜ธ, sector๋ฒˆํ˜ธ์— ๋Œ€ํ•ด์„œ๋Š” ๋ชจ๋ฆ„) โœ”๏ธ sector logical b...

KOCW_File System

โœ… File and File System named collection of related inforamtion ์ผ๋ฐ˜์ ์œผ๋กœ involataile ๋ณด์กฐ๊ธฐ์–ต์žฅ์น˜์— ์ €์žฅ(Harddisk์— ์ €์žฅ) file์€ ์ด๋ฆ„์œผ๋กœ ์ ‘๊ทผ(๐Ÿ†š ๋ฉ”๋ชจ๋ฆฌ๋Š” ์ฃผ์†Œ๋กœ ์ ‘๊ทผ) OS๋Š” ๋‹ค์–‘ํ•œ ์ €์žฅ์žฅ์น˜๋ฅผ file์ด๋ผ๋Š” ๋™์ผํ•œ ๋…ผ๋ฆฌ์  ๋‹จ์œ„๋กœ ๋ณผ ์ˆ˜ ์žˆ๊ฒŒ ํ•ด ์คŒ Fi...

Interview_KPT ํšŒ๊ณ 

โœ… JSCODE ๋ชจ์˜๋ฉด์ ‘์„ ์‹ ์ฒญํ•˜๊ณ  ์‹œ์ž‘ํ•˜๊ฒŒ๋œ ๊ณ„๊ธฐ ๋„คํŠธ์›Œํฌ ๋ฉด์ ‘์„ ํ–ˆ์—ˆ๋Š”๋ฐ, ๊ทธ ๋•Œ ๊ฒฝํ—˜์ด ๋„์›€์ด ๋งŽ์ด ๋˜์–ด ์ด๋ฒˆ์— ์‹ ์ฒญํ•˜๊ฒŒ ๋˜์—ˆ์Šต๋‹ˆ๋‹ค. โœ… JSCODE ๋ชจ์˜๋ฉด์ ‘ ์Šคํ„ฐ๋””๋ฅผ ๋งˆ๋ฌด๋ฆฌํ•˜๋ฉฐ ๊ฐœ์ธ์ ์œผ๋กœ ์„ฑ์žฅํ•œ์ , ๋А๋‚€์  ์ž‘์„ฑ ๋‘๊ด„์‹์œผ๋กœ ๋‹ต๋ณ€ํ•˜๋Š” ์Šต๊ด€์ด ์ƒ๊ฒผ์Šต๋‹ˆ๋‹ค. ์‹œ๊ฐ„์ด ์˜ค๋ž˜ ๊ฑธ๋ฆฌ์ง€๋งŒ, ํ•  ์ˆ˜ ์žˆ๋‹ค๋Š” ์ž์‹ ๊ฐ์ด ์ข€ ์ƒ๊ฒผ์Šต๋‹ˆ๋‹ค. โœ… Ke...

Interview_memory/ paging/ swapping

โœ… Dynamic Relocation ๐Ÿ†š Dynamic Loading ๐Ÿ†š Dynamic Linking Dynamic Relocation: runtime์— logical address์—์„œ physical address๋กœ address binding์ด ์ผ์–ด๋‚˜๋Š” ๊ฒƒ Dynamic Loading: ํ”„๋กœ๊ทธ๋žจ์ด ์‹คํ–‰๋˜๋ฉด ํ†ต์งธ๋กœ ๋ฉ”๋ชจ๋ฆฌ์— load๋˜๋Š” ...

KOCW_Virtual Memory

๋ฌผ๋ฆฌ์  ๋ฉ”๋ชจ๋ฆฌ์˜ ์ฃผ์†Œ๋ณ€ํ™˜์€ OS๊ฐ€ ๊ด€์—ฌํ•˜์ง€ ์•Š๋Š”๋‹ค, ํ•˜๋“œ์›จ์–ด๊ฐ€ ๋‹ด๋‹น Virtual Memory๊ธฐ๋ฒ•์€ OS๊ฐ€ ์ „์ ์œผ๋กœ ๊ด€์—ฌํ•œ๋‹ค โœ… Virtual Memory ๊ฐ ํ”„๋กœ์„ธ์Šค๋งˆ๋‹ค virtual address๋ฅผ ํ• ๋‹นํ•˜๋Š” ๋ฉ”๋ชจ๋ฆฌ ๊ด€๋ฆฌ ๋ฐฉ๋ฒ• ํ”„๋กœ์„ธ์Šค์˜ Virtual Memory์ค‘ ์ผ๋ถ€๋Š” ๋ฉ”๋ชจ๋ฆฌ์— ์ ์žฌ, ๋‚˜๋จธ์ง€๋Š” ๋””์Šคํฌ์˜ ์Šค์™‘ ์˜์—ญ์— ์กด์žฌ ...

KOCW_Memory Management

โœ… Memory memory๋Š” ์ฃผ์†Œ๋ฅผ ํ†ตํ•ด์„œ ์ ‘๊ทผํ•˜๋Š” ์ €์žฅ์žฅ์น˜์ด๋‹ค. memory management๋Š” ํ•˜๋“œ์›จ์–ด๊ฐ€ ๋‹ด๋‹นํ•œ๋‹ค. 32bit์ฃผ์†Œ์ฒด๊ณ„์—์„œ๋Š” 2์˜ 32์ œ๊ณฑ๊ฐ€์ง€์˜ ์„œ๋กœ ๋‹ค๋ฅธ ๋ฉ”๋ชจ๋ฆฌ ์œ„์น˜๋ฅผ ๊ตฌ๋ถ„ํ•  ์ˆ˜ ์žˆ๋‹ค 64bit์ฃผ์†Œ์ฒด๊ณ„์—์„œ๋Š” 2์˜ 64์ œ๊ณฑ๊ฐ€์ง€์˜ ์„œ๋กœ ๋‹ค๋ฅธ ๋ฉ”๋ชจ๋ฆฌ ์œ„์น˜๋ฅผ ๊ตฌ๋ถ„ํ•  ์ˆ˜ ์žˆ๋‹ค ์ปดํ“จํ„ฐ์—์„œ๋Š” byte๋‹จ์œ„๋กœ...

Interview_Synchronization/ Semaphore/ Deadlock

โœ… ๋ณ‘ํ–‰์„ฑ(๋™์‹œ์„ฑ)์—๋Œ€ํ•ด ์„ค๋ช…ํ•ด์ฃผ์„ธ์š” concurrency CPU๋Š” ํ•œ๋ฒˆ์— ํ•œ ๊ฐœ์˜ ์ž‘์—…๋งŒ ์ฒ˜๋ฆฌ ๊ฐ€๋Šฅ ๋น ๋ฅธ ์†๋„๋กœ ์—ฌ๋Ÿฌ ์ž‘์—…์„ ๋ฒˆ๊ฐˆ์•„ ์ฒ˜๋ฆฌํ•˜์—ฌ ์‚ฌ์šฉ์ž ์ž…์žฅ์—์„œ๋Š” ๋™์‹œ์— ์—ฌ๋Ÿฌ ์ž‘์—…์ด ์ฒ˜๋ฆฌ๋˜๋Š” ๊ฒƒ์ฒ˜๋Ÿผ ๋А๊ปด์ง โš ๏ธ ๊ณต์œ  ์ž์›์— ๋Œ€ํ•ด ๋ฌธ์ œ๊ฐ€ ์ƒ๊ธธ ์ˆ˜ ์žˆ์–ด synchronizationํ•„์š” โœ… ๋ณ‘๋ ฌ์„ฑ์— ๋Œ€ํ•ด ์„ค๋ช…ํ•ด์ฃผ์„ธ์š”. parral...