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42 Cards in this Set
- Front
- Back
Why might you configure root zones on a DNS server?
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if the DNS clients do not connect to the Internet, or you do not want them querying the Internet
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What does WINS Forward Lookup do?
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passes queries that DNS can't resolve to WINS for resolution
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What does "A recursive query to other DNS servers" test that "A simple query against this DNS server" does not?
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recursive querying
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How can you determine what suffixes are given to unqualified names submitted to a DNS server?
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enter nslookup in debug mode and enter an unqualified name
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What does running nslookup by itself do?
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puts nslookup in interactive mode
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What interactive mode nslookup command will enter debugging mode?
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set d2
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What command would be used in nslookup interactive mode to look for a particular type of record?
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set type
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What command is used to reset the DNS resolver cache on a machine?
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ipconfig /flushdns
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What command is used to display a client's DNS resolver cache?
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ipconfig /displaydns
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What command will refresh all DHCP leases and register related DNS names?
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ipconfig /registerdns
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Where is the DNS logfile stored?
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%systemroot%\system32\dns\dns.log
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By default, what is the maximum size of dns.log?
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4 Mb
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What client OS's support dynamic updates?
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Windows 2000 and above
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What may be the cause of slow DNS name resolution?
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the name server database contains a large number of stale records
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What can you do if DNS queries are generating lots of network traffic?
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increase the TTL the resolver has for caching resource records
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Do standard (non-AD Integrated) DNS zones support dynamic updates?
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yes
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When using dynamic updates, what record does the client update?
What record does the DHCP server update? |
the client updates the A record, and the DHCP server updates the PTR record
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To promote a member server to a DC, what must the DNS server support?
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SRV records
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What two records are required for nslookup to work?
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forward lookup records and reverse lookup records
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When registering a domain name, the addresses of what DNS servers must be provided?
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a primary and secondary DNS server
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What does a WINS proxy agent do?
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allows hosts to query WINS servers on other subnets for names on that subnet
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What method do WINS servers use to announce themselves to other WINS servers?
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periodic multicasts
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What WINS servers can use automatic partner configuration?
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Windows 2000 servers and above
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What does an unattached WINS server do when it hears a multicast announcement?
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adds the other server as a push/pull partner
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How often do WINS automatic partners pull data?
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every two hours
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How long do automatic WINS partnerships last?
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until one of the partners is restarted
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How long do manually-created WINS partnerships last?
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until the partnership is manually broken
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Where does best practice say WINS databases should be backed up to?
Why? |
WINS databases should be backed up to a different physical disk in the server (it can't be stored on a network drive)- NT tended to corrupt the WINS database
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What two sources can WINS records be checked against?
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the server that issued them, or a randomly-selected replication partner
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Where is the WINS database stored by default?
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%systemroot%\system32\wins
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At what two levels can WINS replication be controlled?
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for all partnerships for a given server, or for individual partnerships
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What are static WINS mappings normally used for?
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providing WINS resolution for clients that don't use NetBIOS, such as UNIX or Macintosh clients
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What are the two options for searching a WINS database?
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Find By Name or Find By Owner
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What is online compaction?
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the process whereby the WINS server periodically deletes unneeded records
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What drawback does online compaction have?
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it doesn't reclaim unused space
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What tool can be used to compress a DHCP or WINS database?
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jetpack.exe
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What step must be taken before using jetpack on a database?
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the service using the database must be stopped
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What is an owner-version mapping table?
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a table that tracks which WINS server owns a particular registration, as well as the highest version ID from that server
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How should a corrupt WINS database be repaired?
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stop the WINS service, remove the database files, and restart the service (database will replicate from partners)
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When a client can't resolve a WINS name, what should be checked first?
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the client configuration
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What is the likely problem if clients can resolve WINS names on their own subnet, but not on another?
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there is no WINS server available for the remote subnet
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What does the Intervals tab of the WINS server properties control?
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when client records are renewed, marked extinct, or verified
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