B
Glossary
ActiveX — A version of Microsoft’s OLE (object linking and embedding) which can
directly modify files. Usually digitally signed.
API (Application Programming Interface) — A set of callable software functions that
applications use to make requests to the operating systems.
Blue Screen of Death (or Blue Screen) — A euphemism for the screen that appears when
the Windows operating system halts due to a critical error.
Default Gateway — The IP address of computer that is attached to the network running
TCP/IP that knows how to route data to other networks.
DNS — The Domain Name System (DNS) is a database used by TCP/IP applications to
map between host names and IP addresses. Each company maintains its own database of
information and runs a server program that other systems across the Internet can query. The
DNS provides the protocol that allows clients and servers to communicate with each other.
Dynamic Host Configuration Protocol (DHCP) — A feature of Windows NT server that
automatically assigns IP addresses to hosts on a TCP/IP network whenever the hosts starts up.
Bridge — A device that passes network data between two segments of network.
Ethernet — A network technology invented by Xerox Corporation and developed jointly
by Xerox, DNEC, and Intel.
Firewall — A hardware or software component in the data path between the internet and an
internal network. The firewall filters packets by examining them on one side and deciding what
to pass along to the other side.
Gateway — A computer that acts as a translator on the network or as a router between two
network technologies. It can also act as a translator between two different network protocols.
Host — Defined as anything on the network that can transmit and receive IP packets on a
network. This would include workstations, servers, and the Model 2701.
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