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    <p>R1. 91.198.174.192</p>
    <p>R2. text-lb.esams.wikimedia.org.<br>
    </p>
    <p>R3. 2620:0:862:ed1a::1<br>
    </p>
    <p>R4.
1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.a.1.d.e.2.6.8.0.0.0.0.0.0.2.6.2.ip6.arpa.
      3600 IN PTR text-lb.esams.wikimedia.org.<br>
    </p>
    <p>R5. 91.198.174.0 - 91.198.174.255<br>
    </p>
    <p>R6. NL
<br>
    </p>
    <p>R7. 2620:0:862::/48<br>
    </p>
    <p>R8. m.dns.it.
 s.dns.it.
 nameserver.cnr.it.
 a.dns.it.
      
r.dns.it.
 dns.nic.it.
<br>
    </p>
    <p>R9. 217.29.76.4<br>
    </p>
    <p>R10. 217.29.76.0/22<br>
    </p>
    <p>R11. Maurizio Martinelli</p>
    <p>R.12 dns1.fweds-spc.it. dnsmaster.fastweb.it. 2016061504 86400
      3600 604800 86400</p>
    <p>R.13 dns1.fweds-spc.it.</p>
    <p>R.14 Maria Antonietta Gervasio</p>
    <p>R.15 IwNDavj9VtChv86Rh42smCN9m6CUDzBowot/Co0GkciBv8b6eWqxZjf0
      ULUhAiWOJrNSrm1lUef88LqDBUeNnUYOO6Kvg0fx2dvMP2JFkzG/TGVM
      r5buzGafblpBFfDQ0BUq+P5zvla+yk9z3VNyo6vGUs/smdKoLfGII0Hk 9cc=</p>
    <p>R.16 milan name server<br>
    </p>
    <p>R.17 NSD 4.1.9<br>
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    <br>
    <div class="moz-cite-prefix">Il 11/06/16 20:09, Antonio Prado via
      Internet-e-architetture-di-rete ha scritto:<br>
    </div>
    <blockquote cite="mid:b6cef89f-3de2-d7bf-7934-78b5863a280b@prado.it"
      type="cite">
      <pre wrap="">cari allievi,

vi propongo alcuni esercizietti per mantenere la mente in allenamento:

+---+------------------------------------------------------------------+
| 1.| qual e' il RR IN A di wikipedia.org?                             |
+---+------------------------------------------------------------------+
| 2.| qual e' il RR IN PTR di $1?                                      |
+---+------------------------------------------------------------------+
| 3.| qual e' il RR IN AAAA di $2?                                     |
+---+------------------------------------------------------------------+
| 4.| qual e' il RR IN PTR di $3?                                      |
+---+------------------------------------------------------------------+
| 5.| qual e' l'inetnum: di $1?                                        |
+---+------------------------------------------------------------------+
| 6.| qual e' country: di $5?                                          |
+---+------------------------------------------------------------------+
| 7.| qual e' il route6: di $3?                                        |
+---+------------------------------------------------------------------+
| 8.| qual e' un RR IN NS di .it?                                      |
+---+------------------------------------------------------------------+
| 9.| qual e' il RR IN A di $8?                                        |
+---+------------------------------------------------------------------+
|10.| qual e' l'inetnum: (espresso in CIDR) di $9?                     |
+---+------------------------------------------------------------------+
|11.| qual e' la corrispondente person: del nic-handle MM13-RIPE?      |
+---+------------------------------------------------------------------+
|12.| qual e' il RR IN SOA di gov.it?                                  |
+---+------------------------------------------------------------------+
|13.| qual e' il nameserver citato in $12?                             |
+---+------------------------------------------------------------------+
|14.| qual e' il Name: dell'admin contact di $13?                      |
+---+------------------------------------------------------------------+
|15.| qual e' il RR IN RSIG del SOA di .net?                           |
+---+------------------------------------------------------------------+
|16.| qual e' il RR CH TXT di version.bind secondo $8                  |
+---+------------------------------------------------------------------+
|17.|qual e' il RR CH TXT di version.server secondo yeti-ns.as59715.net|
+---+------------------------------------------------------------------+

ecco come formattare le risposte:

+---+-----------------------------------------------------------------+
| A.| qual e' la somma di 2 e 3?                                      |
+---+-----------------------------------------------------------------+
| B.| qual e' il doppio di $A?                                        |
+---+-----------------------------------------------------------------+


RA.  5
RB. 10

caldeggio un vostro sollecito interessamento

grazie
--
antonio

</pre>
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</pre>
    </blockquote>
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