H

hardware requirements

The minimum system performance level that software needs to run on.

high availability

Criteria that specify that a service is available to users or other systems nearly all of the time, usually at a higher cost than systems with less reliability.

high-level DNS security policy

Rules that dictate how the DNS server is used within the organization. These rules dictate that absolutely no Internet interoperability is available through the DNS infrastructure.

hub-and-spoke method

WINS replication topology that uses centralized WINS servers as hub servers that are responsible for maintaining the replication to all other push/pull partners , or spoke WINS servers.

hybrid

Administration method that uses a combination of centralized and decentralized administration to allow the network to be managed efficiently .