70-216 Set 4
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- Why might you configure root zones on a DNS server?
- if the DNS clients do not connect to the Internet, or you do not want them querying the Internet
- What does WINS Forward Lookup do?
- passes queries that DNS can't resolve to WINS for resolution
- What does "A recursive query to other DNS servers" test that "A simple query against this DNS server" does not?
- recursive querying
- How can you determine what suffixes are given to unqualified names submitted to a DNS server?
- enter nslookup in debug mode and enter an unqualified name
- What does running nslookup by itself do?
- puts nslookup in interactive mode
- What interactive mode nslookup command will enter debugging mode?
- set d2
- What command would be used in nslookup interactive mode to look for a particular type of record?
- set type
- What command is used to reset the DNS resolver cache on a machine?
- ipconfig /flushdns
- What command is used to display a client's DNS resolver cache?
- ipconfig /displaydns
- What command will refresh all DHCP leases and register related DNS names?
- ipconfig /registerdns
- Where is the DNS logfile stored?
- %systemroot%\system32\dns\dns.log
- By default, what is the maximum size of dns.log?
- 4 Mb
- What client OS's support dynamic updates?
- Windows 2000 and above
- What may be the cause of slow DNS name resolution?
- the name server database contains a large number of stale records
- What can you do if DNS queries are generating lots of network traffic?
- increase the TTL the resolver has for caching resource records
- Do standard (non-AD Integrated) DNS zones support dynamic updates?
- 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
- To promote a member server to a DC, what must the DNS server support?
- SRV records
- What two records are required for nslookup to work?
- forward lookup records and reverse lookup records
- When registering a domain name, the addresses of what DNS servers must be provided?
- a primary and secondary DNS server
- What does a WINS proxy agent do?
- allows hosts to query WINS servers on other subnets for names on that subnet
- What method do WINS servers use to announce themselves to other WINS servers?
- periodic multicasts
- What WINS servers can use automatic partner configuration?
- Windows 2000 servers and above
- What does an unattached WINS server do when it hears a multicast announcement?
- adds the other server as a push/pull partner
- How often do WINS automatic partners pull data?
- every two hours
- How long do automatic WINS partnerships last?
- until one of the partners is restarted
- How long do manually-created WINS partnerships last?
- 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
- What two sources can WINS records be checked against?
- the server that issued them, or a randomly-selected replication partner
- Where is the WINS database stored by default?
- %systemroot%\system32\wins
- At what two levels can WINS replication be controlled?
- for all partnerships for a given server, or for individual partnerships
- What are static WINS mappings normally used for?
- providing WINS resolution for clients that don't use NetBIOS, such as UNIX or Macintosh clients
- What are the two options for searching a WINS database?
- Find By Name or Find By Owner
- What is online compaction?
- the process whereby the WINS server periodically deletes unneeded records
- What drawback does online compaction have?
- it doesn't reclaim unused space
- What tool can be used to compress a DHCP or WINS database?
- jetpack.exe
- What step must be taken before using jetpack on a database?
- the service using the database must be stopped
- What is an owner-version mapping table?
- a table that tracks which WINS server owns a particular registration, as well as the highest version ID from that server
- How should a corrupt WINS database be repaired?
- stop the WINS service, remove the database files, and restart the service (database will replicate from partners)
- When a client can't resolve a WINS name, what should be checked first?
- the client configuration
- What is the likely problem if clients can resolve WINS names on their own subnet, but not on another?
- there is no WINS server available for the remote subnet
- What does the Intervals tab of the WINS server properties control?
- when client records are renewed, marked extinct, or verified