freepeople性欧美熟妇, 色戒完整版无删减158分钟hd, 无码精品国产vα在线观看DVD, 丰满少妇伦精品无码专区在线观看,艾栗栗与纹身男宾馆3p50分钟,国产AV片在线观看,黑人与美女高潮,18岁女RAPPERDISSSUBS,国产手机在机看影片

正文內(nèi)容

chtcpip協(xié)議ppt課件(已修改)

2025-05-17 12:02 本頁(yè)面
 

【正文】 第三篇 設(shè)計(jì)、制作:譚獻(xiàn)海 EMAIL: 背景 ? 網(wǎng)絡(luò)編程解決了數(shù)據(jù)包的 發(fā)送 與 接收 問題 ? SOCKET,JAVA等 :網(wǎng)絡(luò)層和數(shù)據(jù)連路層報(bào)文 ? NDIS,LIBPCAP,WINPCAP等 :連路層報(bào)文 ? 報(bào)文如何構(gòu)建 ?? → 網(wǎng)絡(luò)協(xié)議 TCP/IP 網(wǎng)絡(luò)上攔截下來(lái)的數(shù)據(jù) 一個(gè)從 Inter上攔截下來(lái)的實(shí)際比特流 101010101010…… 10101011000000001000000010101101000110000101110110001110010100100101010010101011001000111110101101110000000010000000000001000101000000000000000000101000001110000111011001000000000000000100000000000110111110110100111111000000101010000000000001111101110010100110001001111011100000100000100000011000000000000101000000110010000001011110010110000101000110011001011010100000000110110101000000000100000000000000000011001111001100010000000000000000001000000010000000100000001000000010000000100000 上述比特流的含義 101010101010……10101011000000001000000010101101000110000101110110001110010100100101010010101011001000111110101101110000000010000000000001000101000000000000000000101000001110000111011001000000000000000100000000000110111110110100111111000000101010000000000001111101110010100110001001111011100000100000100000011000000000000101000000110010000001011110010110000101000110011001011010100000000110110101000000000100000000000000000011001111001100010000000000000000001000000010000000100000001000000010000000100000 同步序列 , (≧ 8字節(jié) ) 以太幀頭 (14字節(jié) ) IP報(bào)頭 (20字節(jié) ) TCP報(bào)頭 (20字節(jié) ) 數(shù)據(jù) 同步結(jié)束 ,數(shù)據(jù)開始 網(wǎng)絡(luò)體系結(jié)構(gòu) 應(yīng)用層 主機(jī) 主機(jī)層 網(wǎng)間網(wǎng)層 網(wǎng)絡(luò) 接口層 TCP/IP Model Application Presentation Session Transport Network Datalink Physical OSI Ref Model FTP TCP IP Ether Tel HTTP UDP Pointto Point TCP/IP Protocols OSI: 7層結(jié)構(gòu);因特網(wǎng)四層結(jié)構(gòu) TCP/IP 四層結(jié)構(gòu) FTP server Application Transport Network interface FTP client TCP FTP server TCP IP IP Ether Driver IP IP Ether Driver 以太 網(wǎng)卡 Ether Driver (端 端 通信 ) Network (設(shè)備驅(qū)動(dòng)與接口卡 ) (網(wǎng)絡(luò)應(yīng)用 :ftp, smtp, ) (路由 ,轉(zhuǎn)發(fā) ,互連 ) 10M 以太網(wǎng) 以太網(wǎng)幀格式 兩種幀格式: ? 以太網(wǎng)幀 ? IEEE Ether amp。 Frame Format Ether幀 Dest. Address Source Address Type Info IP IPX AppleTalk CRC ? IEEE Dest. Address Source Address Length 6 6 2 LLC IP IPX AppleTalk CRC 4 Pad Length Info Size in bytes 6
點(diǎn)擊復(fù)制文檔內(nèi)容
教學(xué)課件相關(guān)推薦
文庫(kù)吧 www.dybbs8.com
公安備案圖鄂ICP備17016276號(hào)-1