| Term 
 
        | Address Resolution Protocol (ARP) |  | Definition 
 
        | Used to map a known IP address to an unknown MAC address. |  | 
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        | Term 
 | Definition 
 
        | Top-most layer of the OSI model where DHCP and other network applications function. |  | 
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        | Term 
 | Definition 
 
        | Process of enabling an Active Directory DHCP server to provide DHCP services to clients. |  | 
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        | Term 
 | Definition 
 
        | Restores performed by a DHCP server whenever database corruption is detected. |  | 
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        | Term 
 | Definition 
 
        | List of TCP/IP addresses within a DHCP scope that can be distributed to DHCP clients. |  | 
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        | Term 
 | Definition 
 
        | Indicates the last information that was successfully written to a JET database. |  | 
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        | Term 
 | Definition 
 
        | DHCP options applied based on type, whether vendor classes or user classes. |  | 
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        | Term 
 | Definition 
 
        | To optimize a DHCP database to reclaim unused space created by deleted records. |  | 
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        | Term 
 | Definition 
 
        | Sent by a DHCP server to acknowledge the client’s acceptance of a DHCP lease. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Sent by a DHCP client to a DHCP server to indicate that it is not accepting a DHCP lease that was sent by a DHCPOFFER message. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Broadcast-based DHCP message used by clients to locate available DHCP servers. |  | 
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        | Term 
 | Definition 
 
        | DHCP message used to detect rogue DHCP servers. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Sent by a DHCP server to deny a client’s DHCPREQUEST message. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Broadcast-based DHCP message used by DHCP servers to offer IP address information to a requesting client. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Sent by a DHCP client to relinquish an IP address and cancel the remaining lease. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Used by a DHCP client to signal acceptance of a DHCP lease that was sent by a DHCPOFFER message. |  | 
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        | Term 
 | Definition 
 
        | Portion of an IP address range that will not be distributed to DHCP clients by a DHCP server. |  | 
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        | Term 
 
        | Joint Engine Technology (JET) |  | Definition 
 
        | Database format used by the DHCP database. |  | 
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        | Term 
 
        | Media Access Control (MAC) |  | Definition 
 
        | Hard-coded hexadecimal address configured for each Network Interface Card (NIC). |  | 
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        | Term 
 | Definition 
 
        | Multiple logical subnets contained within a single network. |  | 
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        | Term 
 
        | Open System Interconnection (OSI) |  | Definition 
 
        | A model for network communications consisting of seven layers from Physical to Application. |  | 
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        | Term 
 | Definition 
 
        | Process of verifying the contents of the DHCP database against the DHCP Registry values. |  | 
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        | Term 
 
        | Request for Comments (RFC) |  | Definition 
 
        | Documents released by the IETF to define protocols, such as FTP and LDAP. |  | 
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        | Term 
 | Definition 
 
        | Configures a consistent IP address for a DHCP-enabled host. |  | 
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        | Term 
 | Definition 
 
        | DHCP server that has not been authorized within Active Directory. |  | 
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        | Term 
 | Definition 
 
        | Administrative grouping of multiple contiguous DHCP scopes. |  | 
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        | Term 
 | Definition 
 
        | Represents half of the DHCP lease time. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Represents 87.5% of the DHCP lease time. |  | 
        |  | 
        
        | Term 
 
        | Trivial File Transfer Protocol (TFTP) |  | Definition 
 
        | Lightweight version of FTP that uses UDP traffic rather than TCP. |  | 
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        | Term 
 
        | User Datagram Protocol (UDP) |  | Definition 
 
        | Connectionless, non-acknowledgementbased TCP/IP protocol used for low-overhead communication. |  | 
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