Key Terms

Review the following list of key terms:

• automated update— A service that automatically updates software.

• cluster— A group of computers configured to operate as a single logical system.

• dotted decimal— A common format for the decimal equivalent of a 32-bit IP address (for example, 111.121.131.144).

• downloadable workspace— A portable, custom work environment available to the user no matter where the user logs in.

• extension header— An optional header following the main header in an IPv6 datagram. The extension header contains additional information that might not be necessary in all cases.

• flow level— A designation for an IPv6 datagram specifying special handling or a special level of throughput (for example, real-time).

• hop limit— The number of remaining router hops a datagram can take before it is discarded. The hop limit is specified in the IPv6 main header and then decremented at each router stop.

• IPv6— A new standard for IP addressing that features 128-bit IP addresses. The intent of IPv6 designers is for IPv6 to phase in gradually over the next several years.

• jumbo payload— A datagram payload with a length exceeding the conventional limit of 65,535 bytes. IPv6 enables jumbo payload datagrams to pass through the network.

• Lightweight Directory Access Protocol (LDAP)— A protocol designed for fast lookups of directory-based data structures, such as an online employee directory.

• network computer (NC)— A diskless computer that uses Java-based technology.

• payload length— The length of the data portion of an IPv6 header (excluding the header).

• Simple Object Access Protocol (SOAP)— A protocol that offers a standardized method for passing XML-based data between Web service applications. SOAP also describes a standard method for invoking remote procedures using XML and HTTP.

• storage area network— A high-speed and high-performance network of independent storage devices and server nodes.

• terminal client— A computer or dedicated terminal device designed to access applications located on another computer.

• Total Cost of Ownership (TCO)— The cost of purchasing, operating, and maintaining an electronic devices such as a computer.

• Web services— A network programming architecture that relies upon XML, HTTP, and other tools of the Web environment.