The completely new zone type in Windows Server 2008 is the GlobalNames Zone, which I brie?y discussed earlier. It is a zone type that is designed to assist in phasing out the WINS technology by implementing a last-resort technique that MCITP Certification resolves NetBIOS queries for DNS operating infrastructures. It supports IPv6, can integrate into a currently running WINS environment, and can affect an entire forest.
Within Windows Server 2008, zone transfers come in two types: authoritative transfers (AXFRs) and incremental zone transfers (IXFRs). An AXFR is a complete transfer of all components of the zone as it is authoritatively initiated, whereas an IXFR transfers only the differences since the last zone transfer. Normally, most organizations try to make as much use as possible of IXFR because of the inherently less bandwidth that is used.
A friend of mine once told me that if Active Directory knew where, when, and how to rep- licate itself, I?d probably be out of a job. And, unfortunately, I have to agree. One of the major problems with any enterprise is the process of connecting various servers through the use of site links, bridges, and various routers across multiple subnets. Itâ€™s time-consuming, dif?cult, and not necessarily reliable. Additionally, replication uses schedules that may not ?t in perfectly well with your given organization.
However, the actual process of setting up replication was mostly covered in MCTS Windows 7 Configuration your exam on Active Directory. On this certification exam, youâ€™ll be concentrating on understanding the scope of your replication as it pertains to DNS. Remember, there are four scope levels, which are summarized in Table 2.4.
TABLE 2.4 DNS Scope Replication Levels
Scope Level Effect
Forest Every DNS server in the forest receives replication.
Domain Only DNS servers for the domain will be replicated.
Domain controller in domain Every domain controller holds a copy of the DNS server information.
A+ Certification training is accessible accepted and is advised to adapt the apprentice for the acceptance exam. There is a accepted misconception, however, apropos A+ Acceptance training. Abounding ambitious techs appearance it as a basal training advance for beginners to the IA technology field.However, the actual process of setting up replication was mostly covered in MCTS Windows 7 Configuration your exam on Active Directory. On this certification exam, youâ€™ll be concentrating on understanding the scope of your replication as it pertains to DNS. Remember, there are four scope levels, which are summarized in Table 2.4.