[Internet-e-architetture-di-rete] ancora su resolver e autoritativi

[Antonio Prado]

On 5/17/16 9:50 PM, Abigail Bianconi wrote:
> ========================================
> 2. | qual e' il RR IN AAAA di $1?
> ========================================
> dig 10 eggs.gnu.org <http://eggs.gnu.org> IN AAAA +shor
> 2001:4830:134:3::10

per cosa sta quel 10 nella query?

> ========================================
> 3.| qual e' il RR IN PTR di $2?
> ========================================
> 
> 2001:4830:134:3::10
> NXDOMAIN

qui non vedo la query

> ========================================
> 4. | qual e' un RR IN NS di com.?
> ========================================
> 
> dig com. IN NS +shor
> f.gtld-servers.net <http://f.gtld-servers.net>.
> h.gtld-servers.net <http://h.gtld-servers.net>.
> j.gtld-servers.net <http://j.gtld-servers.net>.
> e.gtld-servers.net <http://e.gtld-servers.net>.
> i.gtld-servers.net <http://i.gtld-servers.net>.
> k.gtld-servers.net <http://k.gtld-servers.net>.
> c.gtld-servers.net <http://c.gtld-servers.net>.
> l.gtld-servers.net <http://l.gtld-servers.net>.
> b.gtld-servers.net <http://b.gtld-servers.net>.
> a.gtld-servers.net <http://a.gtld-servers.net>.
> d.gtld-servers.net <http://d.gtld-servers.net>.
> m.gtld-servers.net <http://m.gtld-servers.net>.
> g.gtld-servers.net <http://g.gtld-servers.net>.

l'esercizio ne chiede uno

> ========================================
> 5. | qual e' il RR IN A di $4?
> ========================================
> 
> dig a.gtld-servers.net <http://a.gtld-servers.net> IN A +short   
> 192.5.6.30
> dig b.gtld-servers.net <http://b.gtld-servers.net> IN A +short
> 192.33.14.30
> dig c.gtld-servers.net <http://c.gtld-servers.net> IN A +short
> 192.26.92.30
> dig d.gtld-servers.net <http://d.gtld-servers.net> IN A +short
> 192.31.80.30
> dig e.gtld-servers.net <http://e.gtld-servers.net> IN A +short
> 192.12.94.30
> dig f.gtld-servers.net <http://f.gtld-servers.net> IN A +short
> 192.35.51.30
> dig g.gtld-servers.net <http://g.gtld-servers.net> IN A +short
> 192.42.93.30
> dig h.gtld-servers.net <http://h.gtld-servers.net> IN A +short
> 192.54.112.30
> dig i.gtld-servers.net <http://i.gtld-servers.net> IN A +short
> 192.43.172.30
> dig l.gtld-servers.net <http://l.gtld-servers.net> IN A +short
> 192.41.162.30
> dig m.gtld-servers.net <http://m.gtld-servers.net> IN A +short
> 192.55.83.30
> dig k.gtld-servers.net <http://k.gtld-servers.net> IN A +short
> 192.52.178.30
> dig j.gtld-servers.net <http://j.gtld-servers.net> IN A +short 
> 192.48.79.30

l'esercizio ne chiede uno solo

> 8. | qual e' il dominio in-addr.arpa. Per 127.0.0.1?
> 1

spiega

> 9. | qual e' il dominio ip6.arpa. per fe80::e6ce:8ff:2:1?
> NXDOMAIN

spiega

> 14.| qual e' il RR IN RRSIG di RR IN AAAA di as112.net
> <http://as112.net/>.?
> 
> dig as112.net <http://as112.net> IN AAAA +dnssec +shor
> 2001:4f8:3:2bc::198
> AAAA 8 2 3600 20160515101102 20160415091102 24264 as112.net
> <http://as112.net>.
> 2CltUuuClRPawhgtjt7lDTm7Kru21veaxDw1/J9EkWLSU6u0Cq+lLd8Z ODGmKtyuivJFmYRB
> iuRObe2ylNgPNM03Vf/0K9eutmRm/pb/0Is9TyBL
> UsF4/PIleR7qb5fw8vBW9a5t80/8D7lW4CrVNu6mgU4lWEWBE5b8wxX/ O+U=
> 
> 
> << PERCHÈ SONO DISCORDANTI?>>

prova a fare una ipotesi

grazie
--
antonio

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