Question

DNS:

Use the tool dig (for Windows you will find dig.exe in the binaries to BIND 9: https://www.isc.org/bind/ ) and select the parameters so that you have an iterative name resolution (starting at one of the 13 DNS Root server) for any hostname. Then specify for two different targets which name servers were polled in order to answer your query. As a submission, please submit the two views of dig , the program's expenses and your interpretation of the issues.

Note: Use subdomains or more complex domains from other top-level domains as targets (.de).

Answer 1

Windows PowerShell PS C:\Users Administrator Downloads BIND9.14.2.x64> .\dig.exe www.yahoo.de ; <o> DiG 9.14.2 <o> www.yahoo.de ; global options: +cmd ;;Got ans wer: iE1 ADER<<- opcodo 1. ANSWED.N THORITY: 0. 7800 DITIONAL: 1 ;; OPT PSEUDOSECTION: flags: udp: 512 ; EDNTION SECTION: ; www.yahoo.de IN A ANSWER SECTION: 299 1799 src1.yahoo.com src.sanl.g01.yahoodns.net. 106.10.248.151 CNAME CNAME IN src1.yahoo.com. src.sanl.g01.yahoodns.net. 299 IN IN A ; Query time: 186 msec ;; SERVER: 8.8.4.4#53(8.8.4.4) ;;WHEN: Thu Jun 13 16: 31:53 India Standard Time 2019 ;; MSG SIZE rcvd: 124 PS C:\Users\Administrator\Downloads\BIND9.14.2. x64> .\dig.exe www.hotmail.de www.hotmail.de +cmd :: Got ans wer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR ; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1 id: 49376 ; ; OPT PSEUDOS ECTION : ; EDNS: version: 0, flags:; udp: 512 Q 3il d ON: IN ;www. ; ANSWER SECTION: www.hotmail.de. 21599 599 CNAME CNAME outlook-fd-0007.1ive.com IN e.com 204 79107 e.net. TA ;; Query time: 547 ms ec EN hu Jun 13 16:32:01 India Standard Time 2019 D: 225 K 4:32 PM d ENG U: 11 K 13/06/2019

Windows PowerShell ; <o>DG ns www.hotmail.de Job :: Got ans wer: ;;->>HEADER<<- opcode: QUERY, status: NOERROR. ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1 +cmd id: 49376 ; ; OPT PSEUDOS ECTION : ; EDNS: version: 0, flags:; udp: 512 mail d ON: IN www. ;; ANSWER SECTION : 21 CNAME Ou S0980k-fd-0007- 204.79.197.209 com IN ook-fd-0007.1ive.com 3599 a-0007.a-msedge.net. 239 A IN Qu ERVER: 8.8.4.4 # 53 ( 8.8.4.4) Thu Jun 13 16:32:01 Índia Standard Time 2019 ;;WHEN: rcvd: 130 ;; MSG SIZE PS C:\Users\Administrator\Down1oads\BIND9.14.2. x64> .\dig. exe 204.79.197.209 ; <o> DiG 9.14.2 <o> 204.79.197.209 Sglobal options: +cmd ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 2403 ; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL 1 ; ; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 512 ;; QUESTION SECTION: ; 204.79.197.209. IN ;; AUTHORITY SECTION: 2019061300 1800 900 604800 86400 86397 a.root-servers.net, nstld.verisign-grs.com SOA TN Qu ERVER8.8.4.4# 53 (8.8.4.4) ; WHEN: ;;MSG SIZE rcvd: 118 Thu Jun 13 16:32:52 India Standard Time 2019 PS C:\Users\Administrator\Down1oads\BIND9.14.2. x64> D: 537 K 4:32 PM ENG 13/06/2019

Windows PowerShell PS C:\Users\Administrator\Down1oads\BIND9.14.2. x64> .\dig. exe 204.79. 197.209 ; <o> DiG 9.14.2 <o> 204.79.197.209 ; ; global options: +cmd ;; GOt DERS opcode: QUERY, status: NXDOMAIN, id: 2403 ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 P'S CONS: OrEi 1ags:; udp: 512 ; ; QUESTION SECTION: ; 204 .79.197.209. IN ;; AUTHORITY SECTION: 86397 a.root-servers.net. nstld.verisign-grs.com. 2019061300 1800 900 604800 86400 SOA IN Qu CRVER8 8.4.4# 53(8.8.4.4) ; WHEN: ;;MSG SIZE rcvd: 118 Thu Jun 13 16:32:52 India Standard Time 2019 PS C:\Users\Administrator\Down1oads\BIND9.14.2. x64> .\dig. exe 106.10. 248.151 ; <o> DiG 9.14.2 <o> 106.10.248.151 global options: +cmd ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 42335 ; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ; ; OPT PSEUDOS ECTION : ; EDNS: version: 0, flags:; udp: 512 ;; QUESTION SECTION: :106.10.248.151. IN ; AUTHORITY SECTION: 2019061300 1800 900 604800 86400 86395 a.root-servers.net, nstld.verisign-grs.com SOA TN Qu ERVER 8.8.4.4# 53(8.8.4.4) ; WHEN: ;;MSG SIZE rcvd: 118 Thu Jun 13 16:33:15 India Standard Time 2019 PS C:\Users\Administrator\Down1oads\BIND9.14.2. x64> Di 69% H 4:33 PM ENG 13/06/2019

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