B
background zone loading

An Active Directory feature that allows an Active Directory Integrated DNS zone to load in the background. This means that a DNS server can service client requests while the zone is still loading into memory.

bidirectional trust

See two-way trust.

bottleneck

Occurs when the flow of packets transmitted across network media slows down. Packets then accumulate and get backed up on the network.

bridgehead server

Used in Windows Server 2008 replication to coordinate the transfer of replicated information between Active Directory sites.

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