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'''Fowarding''':
Fowarding server dose not store any record. It would be useful in a big network.
===Kezhong Liang===
1. What is the version number of the installed BIND package?
Answer:
9.5.0-P2
2. What is bind tool called "named-checkconf" use for?
Answer:
"named-checkconf" checks the syntax, but not the semantics, of a named configuration file.
3. What is bind tool called "named-checkzone" use for?
Answer:
"named-checkzone" checks the syntax and integrity of a zone file. It
performs the same checks as named does when loading a zone. This makes
named-checkzone useful for checking zone files before configuring them
into a name server.
4. What are the names of all the other tools in the bind package?
Answer:
/usr/sbin/dns-keygen
/usr/sbin/dnssec-keygen
/usr/sbin/dnssec-signzone
/usr/sbin/lwresd
/usr/sbin/named
/usr/sbin/named-bootconf
/usr/sbin/named-checkconf
/usr/sbin/named-checkzone
/usr/sbin/named-compilezone
/usr/sbin/rndc
/usr/sbin/rndc-confgen
5. We have used the dig and nslookup bind utilities in this lab, what are the other two bind utilities and what are they for?
Answer:
The other two bind utilities are “host” and “nsupdate”.
/usr/bin/host
"host" is a simple utility for performing DNS lookups. It is normally
used to convert names to IP addresses and vice versa.
/usr/bin/nsupdate
"nsupdate" is used to submit Dynamic DNS Update requests as defined in
RFC2136 to a name server. This allows resource records to be added or
removed from a zone without manually editing the zone file. A single
update request can contain requests to add or remove more than one
resource record.
6. What is the information provided by the "service named status" command?
Answer:
version: 9.5.0-P2
number of zones: 15
debug level: 0
xfers running: 0
xfers deferred: 0
soa queries in progress: 0
query logging is OFF
recursive clients: 0/0/1000
tcp clients: 0/100
server is up and running
named (pid 3166) is running...
7. Will the "version" statement in the "/etc/named.conf" file change the output of the "service named status" command?
Answer:
Yes.
It will change the version line to "version: 9.5.0-P2 (version.bind/txt/ch disabled)".
8. The SOA resource record in a zone file contains 5 numbers, what is the usage of the last one?
Answer:
It is used for "default TTL". When the TTL is not declared, this number will replace it.
