Sony BSV-M1 Operating Instructions - Page 54

Glossary 100Base-TX A UTP cable consisting of 4 pairs of two wires (8 conductors) each, twisted together into a single, unshielded set (i.e., the cable is not enclosed in a metallic mesh to block electromagnetic noise). This is referred to as a twisted pair cable, and 100Base-TX cables meet the Category 5 specifications for such cables. A cable of this type is capable of carrying unmodulated signal data at the rate of 100 megabits per second over distances of up to 100 meters (with a 100 Mbps base band system). It is used for connection to local area networks using fast Ethernet, which operate at speeds in excess of 10 Mbps (data transfer at the rate of 10 megabits per second). 10Base-T A UTP cable consisting of 4 pairs of two wires (8 conductors) each, twisted together into a single, unshielded set (i.e., the cable is not enclosed in a metallic mesh for blocking electromagnetic noise). Also referred to as a twisted pair cable, it is commonly used for connection in Ethernet-based local area networks. A cable of this type is capable of carrying unmodulated signal data at the rate of 10 megabits per second over distances of up to 100 meters (with the 10 Mbps base band system). Client computer A computer that is connected to a server in a network environment, and which receives service from a server. DHCP (Dynamic Host Configuration Protocol) A protocol (an established set of means and procedures for conducting data communication) for dynamically assigning IP addresses. A DHCP server provides an IP address to client computers when they are started up. It is also capable of providing client computers with information such as gateway addresses, domain names, and subnet masks. DHCP server A server that uses DHCP protocol (an established set of means and procedures for conducting data communication) to dynamically provide client computers with TCP/ IP configuration information upon startup. DNS (Domain Name System) A distributed database system (i.e., a database in which another server continues providing information if trouble causes a particular server to go down) for managing information such as IP addresses and host names. Capable of identifying devices from host names or objects from URLs (Uniform Resources Locator: a system used for specifying the locations of files and other resources on the Internet and intranets) even when corresponding IP addresses are not known. (Example: http:// www.fsv.sony.co.jp) Also capable of finding IP addresses from host names. DNS (primary) server The DNS server that has primary responsibility for handling inquiries from clients and other DNS servers. DNS (secondary) server An alternate DNS server that is used when the primary DNS server goes down or is very slow to respond due to heavy load. Default gateway With TCP/IP networks, a device that serves as a bridge for data communication between two networks, or between devices that are not located within the same network. Ordinarily, this is the IP address of a router. Disk capacity The measure of space available for saving programs and files. Domain name The name that indicates a network consisting of hosts that are connected to the internet and the servers at the heart of that network. As with IP addresses, domain names must not be duplicated. A domain name is delimited by commas, and ordinarily the elements are given in order of decreasing scope from the right. For example: With "fsv.sony.co.jp", "fsv" indicates the host (a computer), "sony" designates the Sony network, "co" indicates a company or commercial business, and "jp" indicates Japan. In other words, "fsv.sony.co.jp" indicates the computer fsv belonging to the company Sony in Japan. Encrypted password A password that is encrypted for transmission over a network, so that it cannot be read by any third party. File system A system for recording information used when reading or writing files, such as the storage location, the date, and the owner. HTTPD (Hypertext Transfer Protocol Daemon) Software that runs in the background (works without user intervention) to provide web server functions. HTTP is a protocol by which a Web server sends test and graphics, and the D is an abbreviation for Daemon, indicating that the object is software. Host name A unique name assigned to a device (such as a computer) connected to a TCP/IP network. Also referred to as a machine name or PC name. Glossary 54