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9.1 DNS Overview
Questions and answers
Terms in this set (17)
When do you use the GlobalNames zone?
For single label name resolution within a domain.
Which strategies can provide single-label name resolution for IPv6 hosts?
Use the Global Names zone to allow IPv6-only hosts to contact NetBIOS hosts (IPv6 does not support the use of WINS).
Should HOSTS files be used for name resolution in large networks?
Because the file must be configured on each host, its use is impractical except in the case of very small implementations or on a temporary basis.
When will a Windows client use LLMNR?
Is used when DNS name resolution fails.
What limitations are associated with relying on LLMNR?
Operates only on the local link (within a single subnet).
Requires LLMNR-capable hosts.
In an active directory network, with multiple domains, subnets, and dns servers, you want your hosts to only use dns servers for dns host name resolution
How does DNS devolution work?
The DNS resolver tries to append the parent's DNS name as it goes up the tree until it is successfully resolved or until a specified devolution level is reached.
How can you configure a DNS suffix search list using Group Policy?
Use the DHCP option to enter the suffix of the new domain in the DNS suffix for this connection field and select Use this connection's DNS suffix in DNS registration using Group Policy.
Domain Name System (DNS)
A hierarchical distributed database that maps logical host names to IP addresses.
Top-level Domain (TDL)
The last part of a domain name (.com, .edu, .gov). TDLs are managed by the Internet Corporation of Assigned Names and Numbers (ICANN).
Fully Qualified Domain Name (FQDN)
The host name and all domain names separated by periods. The final period, which is for the root domain, is often omitted and only implied.
The part of a domain name that represents a specific host. For example, "www" is the host name of www.example.com.
A DNS server that has a complete copy of all of the records for a particular domain.
The method used by a DNS server to query Root DNS servers that hold information for the root zone ( . ). Root servers answer name resolution requests by supplying the address of the corresponding top-level DNS server (servers authoritative for .com, .edu, and similar domains).
A static file on each client computer that is used for DNS name resolution.
Link-Local Multicast Name Resolution (LLMNR)
A secondary name resolution protocol that allows clients to find hosts on the local subnet without the use of a DNS server or broadcasts.
An Active Directory behavior that allows a client computer from a child namespace to access resources in the parent namespace without a fully qualified domain name (FQDN).
A special zone in the DNS database that is used for single-label name resolution within a domain.
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