Lab4 - Khoa Cng Ngh Thng Tin i H c Bch Khoa Tp.HCM BI TH C...

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Unformatted text preview: Khoa Cng Ngh Thng Tin i H c Bch Khoa Tp.HCM BI TH C HNH S 4 H tn sinh vin: .............................................................. Nhm:...................MSSV:............................................... I. M c tiu Hi u bi t v DNS. Hi u bi t v HTTP. II. Cc b c th c hi n 1. Hi u bi t v DNS M m t DOS prompt v th c hi n l nh ipconfig /flushdns lo i b cc thng tin trong DNS cache trn my tnh c a b n. Th c hi n l nh ipconfig bi t a ch IP my tnh b n ang s d ng. Kh i ng l i ph n m m Ethereal, b t u ti n trnh b t gi. Th c hi n l nh nslookup www.yahoo.com trn DOS prompt. Sau khi l nh nslookup th c hi n xong, d ng l i ti n trnh b t gi trn Ethereal, l c cc thng i p v i ip.addr==<your IP address> . Xem xt thng tin (t chi ti t n t ng qut) trong cc thng i p trn v tr l i cc cu h i sau: Thng i p DNS query c t o ra t my tnh no v c g i thng qua port no? My tnh no? a ch IP: .................................................. Port:..................................................................................................................... Thng i p DNS response c t o ra t my tnh no v c g i thng qua port no?...
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Lab4 - Khoa Cng Ngh Thng Tin i H c Bch Khoa Tp.HCM BI TH C...

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