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Abbreviation for Moving Picture Experts Group4. One of the MPEG standards for image compression format aiming to transmit images at a high compression rate with lower picture quality.
MulticastThe class D IP address assigned between 224.0.0.0 and 239.255.255.255. Using this IP address enables you to transmit the same data to multiple equipment.
Network addressThe portion that identifies the local network (subnet) in an IP address.
Network bandwidthBit rate that can be used for networking.
NTP serverNetwork time server that transmits and receives time information over the networks.
Passive mode
The mode whereby a client FTP allows TCP connection for data transmission to the FTP server.
POP serverAserver for storing incoming
it.
Primary DNS serverOne of the DNS servers that can first reply to a request by connected devices or other DNS servers.
Proxy serverA server or software that acts as an intermediary between a local network and the Internet so that it can connect to the Internet in place of a computer on a local network
Saturation
The degree to which the color is pure.
Secondary DNS ServerSubsidiary DNS server used when a primary DNS server cannot be used.
Sharpness
The degree to which the boundary of two portions is clearly distinguished.
Aserver for sending or relaying
A protocol for monitoring and managing network devices.
Subnet maskAbbreviation for Transmission Control Protocol. A standard protocol used for the Internet connection. Compared with the other protocol, UDP, TCP provides reliable communication but the communication speed is slower.
UDPAbbreviation for User Datagram Protocol. A standard protocol used for the Internet connection. Compared with the other protocol, TCP, UDP can transmit data faster, but reliable communication is not guaranteed.
UnicastTransmission of the data to the specified equipment on a network by specifying a single address.
90 Glossary