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Answer:
*Package bind-utils - Utilities for querying DNS name servers
/usr/bin/dig
/usr/bin/host
/usr/bin/nslookup
/usr/bin/nsupdate
*Package bind - Berkeley Internet Name Domain (BIND) DNS (Domain Name System) server
/etc/logrotate.d/named - log file
/usr/sbin/dns-keygen
/usr/sbin/dnssec-keygen
/usr/sbin/dnssec-signzone
/usr/sbin/lwresd
/usr/sbin/named-bootconf
/usr/sbin/named-checkconf
/usr/sbin/named-checkzone
/usr/sbin/named-compilezone
/usr/sbin/rndc
/usr/sbin/rndc-confgen
*Package bind-chroot - A chroot runtime environment for the ISC BIND DNS server
server is up and running
named (pid 13308) is running...
8. The SOA resource record in a zone file contains 5 numbers, what is the usage of the last one?
Name:Milton Paiva
Answer:
''source: DNS and BIND, 5th Edition''
movie.edu. IN SOA toystory.movie.edu. al.movie.edu. (
1 ; Serial
3h ; Refresh after 3 hours
1h ; Retry after 1 hour
1w ; Expire after 1 week
'''1h ) ; Negative caching TTL of 1 hour'''
This is how long a remote nameserver can cache negative responses about the zone, answers that say that a particular domain name or the type of data sought for a particular domain name doesn't exist.
