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Network Time Protocol

Index Network Time Protocol

Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks. [1]

132 relations: AARNet, Ad Hoc Configuration Protocol, Advanced Mobile Location, Allan variance, Anonymous;Code, ANSI ASC X9.95 Standard, Application layer, Argus (monitoring software), Atomic clock, ATSC-M/H, Audio-to-video synchronization, Automatic server discovery, Bejeweled 2, Bluetooth Low Energy, Broadcast automation, Calgary Internet Exchange, Clock, Clock network, Clock skew, Clock synchronization, Control panel (software), Control Panel (Windows), Coordinated Universal Time, Crystal oscillator frequencies, D-Link, David L. Mills, Daytime Protocol, Denial-of-service attack, Distributed Computing Environment, Domain controller, DTSS, Dynamic Host Configuration Protocol, Endace, Endian Firewall, Epoch (reference date), Ethernut, Features new to Windows XP, Femtocell, FireballISO, Fuzzball router, Galina Kofman, Gang scheduling, GNSS applications, Greenwich Time Signal, History of online games, HTC Evo 4G, HTTP Strict Transport Security, Index of Internet-related articles, International Atomic Time, Intersection algorithm, ..., IPFC, IPv6, IRIG timecode, Keith Marzullo, Kerberos (protocol), Kodi (software), Leap second, List of acronyms: N, List of computing and IT abbreviations, List of FLOSS Weekly episodes, List of HSMM nodes, List of Internet pioneers, List of inventors, List of Microsoft Windows components, List of RFCs, List of TCP and UDP port numbers, List of Unix daemons, Low latency (capital markets), LwIP, MacOS High Sierra, MacOS Server, MagCom, Manitoba Internet Exchange, Marzullo's algorithm, Mcast.net, Merit Network, Multicast address, National Research Council Time Signal, NetBSD, Netnod, NetworkManager, NITZ, NTP, NTP pool, NTP server misuse and abuse, Ntpd, Ntpdate, Nucleus RTOS, NuttX, OpenBSD, OpenNTPD, Oscilloquartz, Outline of the Internet, PandaBoard, Port (computer networking), Power over Ethernet, Precision Time Protocol, Pulse-per-second signal, Raspberry Pi, Rdate, Real-time clock, RESTENA, RIPE Atlas, ROA Time, Session Description Protocol, SGI Dogfight, Slew, South African Standard Time, Symmetricom, Synchronization, Synchronous Ethernet, System time, Time, Time and frequency transfer, Time in New Zealand, Time in Portugal, Time Protocol, Time server, Time signal, Time synchronization in North America, Time transfer, Timecode, Toronto Internet Exchange, Trusted time, TSIG, United States Naval Observatory, Unix time, User Datagram Protocol, Windows 2000, Year 2038 problem, Zeroshell, 2036. Expand index (82 more) »

AARNet

AARNet (Australian Academic and Research Network) provides Internet services to the Australian education and research communities and their research partners.

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Ad Hoc Configuration Protocol

The Ad Hoc Configuration Protocol (AHCP) is an autoconfiguration protocol for IPv6 and dual-stack IPv6/IPv4 networks designed to be used in place of router discovery and DHCP on networks where it is difficult or impossible to configure a server within every link-layer broadcast domain, for example mobile ad-hoc networks.

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Advanced Mobile Location

Advanced Mobile Location (or AML) is an emergency location-based service (LBS) available on smartphones that, when a caller dials the local (in country) short dial emergency telephone number, sends the best available geolocation of the caller to a dedicated end-point, usually a Public Safety Answering Point, making the location of the caller available to emergency call takers in real-time.

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Allan variance

The Allan variance (AVAR), also known as two-sample variance, is a measure of frequency stability in clocks, oscillators and amplifiers, named after David W. Allan and expressed mathematically as \sigma_y^2(\tau).

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Anonymous;Code

Anonymous;Code is a visual novel video game in development by 5pb. and Chiyomaru Studio.

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ANSI ASC X9.95 Standard

The ANSI X9.95 standard for trusted timestamps expands on the widely used by adding data-level security requirements that can ensure data integrity against a reliable time source that is provable to any third party.

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Application layer

An application layer is an abstraction layer that specifies the shared communications protocols and interface methods used by hosts in a communications network.

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Argus (monitoring software)

Argus is a systems and network monitoring application.

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Atomic clock

An atomic clock is a clock device that uses an electron transition frequency in the microwave, optical, or ultraviolet region of the electromagnetic spectrum of atoms as a frequency standard for its timekeeping element.

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ATSC-M/H

ATSC-M/H (Advanced Television Systems Committee - Mobile/Handheld) is a U.S. standard for mobile digital TV that allows TV broadcasts to be received by mobile devices.

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Audio-to-video synchronization

Audio-to-video synchronization (also known as lip sync, or by the lack of it: lip sync error, lip flap) refers to the relative timing of audio (sound) and video (image) parts during creation, post-production (mixing), transmission, reception and play-back processing.

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Automatic server discovery

Automatic server discovery is a software licensing feature that allows client applications to find license servers automatically on the network, thus eliminating the need for end users to manually configure server information and allowing system administrators to perform their tasks more easily and efficiently.

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Bejeweled 2

Bejeweled 2 is a tile-matching puzzle video game.

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Bluetooth Low Energy

Bluetooth Low Energy (Bluetooth LE, colloquially BLE, formerly marketed as Bluetooth Smart) is a wireless personal area network technology designed and marketed by the Bluetooth Special Interest Group (Bluetooth SIG) aimed at novel applications in the healthcare, fitness, beacons, security, and home entertainment industries.

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Broadcast automation

Broadcast automation incorporates the use of broadcast programming technology to automate broadcasting operations.

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Calgary Internet Exchange

The YYCIX Internet Exchange Community Ltd (YYCIX) is an Internet exchange point (IXP) in Calgary, Alberta, Canada.

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Clock

A clock is an instrument to measure, keep, and indicate time.

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Clock network

A clock network or clock system is a set of synchronized clocks designed to always show exactly the same time by communicating with each other.

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Clock skew

Clock skew (sometimes called timing skew) is a phenomenon in synchronous digital circuit systems (such as computer systems) in which the same sourced clock signal arrives at different components at different times i.e. the instantaneous difference between the readings of any two clocks is called their skew.

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Clock synchronization

Clock synchronization is a topic in computer science and engineering that aims to coordinate otherwise independent clocks.

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Control panel (software)

Many computer user interfaces use a control panel metaphor to give the user control of software and hardware features.

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Control Panel (Windows)

The Control Panel is a component of Microsoft Windows that provides the ability to view and change system settings.

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Coordinated Universal Time

No description.

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Crystal oscillator frequencies

Crystal oscillators can be manufactured for oscillation over a wide range of frequencies, from a few kilohertz up to several hundred megahertz.

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D-Link

D-Link Corporation is a Taiwanese multinational networking equipment manufacturing corporation headquartered in Taipei, Taiwan.

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David L. Mills

David L. Mills (born June 3, 1938) is an American computer engineer and Internet pioneer.

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Daytime Protocol

The Daytime Protocol is a service in the Internet Protocol Suite, defined in 1983 in RFC 867.

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Denial-of-service attack

In computing, a denial-of-service attack (DoS attack) is a cyber-attack in which the perpetrator seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to the Internet.

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Distributed Computing Environment

In computing, the Distributed Computing Environment (DCE) software system was developed in the early 1990s from the work of the Open Software Foundation (OSF), a consortium (founded in 1988) that included Apollo Computer (part of Hewlett-Packard from 1989), IBM, Digital Equipment Corporation, and others.

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Domain controller

On Microsoft Servers, a domain controller (DC) is a server computer that responds to security authentication requests (logging in, checking permissions, etc.) within a Windows domain.

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DTSS

DTSS may refer to.

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Dynamic Host Configuration Protocol

The Dynamic Host Configuration Protocol (DHCP) is a network management protocol used on UDP/IP networks whereby a DHCP server dynamically assigns an IP address and other network configuration parameters to each device on a network so they can communicate with other IP networks.

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Endace

Endace Ltd is a privately-owned network monitoring company, based in New Zealand and founded in 2001.

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Endian Firewall

Endian Firewall is an open-source router, firewall and gateway security Linux distribution developed by the South Tyrolean company Endian.

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Epoch (reference date)

In the fields of chronology and periodization, an epoch is an instant in time chosen as the origin of a particular era.

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Ethernut

Ethernut is an open source hardware and software project for use as an embedded-Ethernet-system.

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Features new to Windows XP

Windows XP introduced many features not found in previous versions of Windows.

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Femtocell

In telecommunications, a femtocell is a small, low-power cellular base station, typically designed for use in a home or small business.

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FireballISO

FireballISO (or "Fireball") is a VMware virtual appliance that builds a security-hardened Live CD containing a stripped-down custom version of Gentoo Linux.

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Fuzzball router

Fuzzball routers were the first modern routers on the Internet.

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Galina Kofman

Galina Kofman is a computer scientist and business executive.

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Gang scheduling

In computer science, gang scheduling is a scheduling algorithm for parallel systems that schedules related threads or processes to run simultaneously on different processors.

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GNSS applications

Global Navigation Satellite System (GNSS) receivers, using the GPS, GLONASS, Galileo or BeiDou system, are used in many applications.

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Greenwich Time Signal

The Greenwich Time Signal (GTS), popularly known as the pips, is a series of six short tones broadcast at one-second intervals by many BBC Radio stations.

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History of online games

Online games are video games played over a computer network.

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HTC Evo 4G

The HTC Evo 4G (trademarked in capitals as EVO 4G, also marketed as HTC EVO WiMAX ISW11HT in Japan) is a smartphone developed by HTC Corporation and marketed as Sprint's flagship Android smartphone, running on its WiMAX network.

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HTTP Strict Transport Security

HTTP Strict Transport Security (HSTS) is a web security policy mechanism that helps to protect websites against protocol downgrade attacks and cookie hijacking.

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Index of Internet-related articles

This page provides an index of articles thought to be Internet or Web related topics.

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International Atomic Time

International Atomic Time (TAI, from the French name temps atomique international) is a high-precision atomic coordinate time standard based on the notional passage of proper time on Earth's geoid.

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Intersection algorithm

The intersection algorithm is an agreement algorithm used to select sources for estimating accurate time from a number of noisy time sources, it forms part of the modern Network Time Protocol.

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IPFC

IPFC stands for Internet Protocol over Fibre Channel.

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IPv6

Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet.

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IRIG timecode

Inter-range instrumentation group time codes, commonly known as IRIG time codes, are standard formats for transferring timing information.

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Keith Marzullo

Keith Marzullo is the inventor of Marzullo's algorithm, which is part of the basis of the Network Time Protocol and the Windows Time Service.

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Kerberos (protocol)

Kerberos is a computer network authentication protocol that works on the basis of tickets to allow nodes communicating over a non-secure network to prove their identity to one another in a secure manner.

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Kodi (software)

Kodi (formerly XBMC) is a free and open-source media player software application developed by the XBMC Foundation, a non-profit technology consortium.

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Leap second

A leap second is a one-second adjustment that is occasionally applied to Coordinated Universal Time (UTC) in order to keep its time of day close to the mean solar time as realized by UT1.

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List of acronyms: N

(Main list of acronyms).

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List of computing and IT abbreviations

This is a list of computing and IT acronyms and abbreviations.

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List of FLOSS Weekly episodes

The following lists all the FLOSS Weekly shows that have been produced.

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List of HSMM nodes

This is intended to be a comprehensive list of HSMM or "hinternet" nodes worldwide.

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List of Internet pioneers

Instead of a single "inventor", the Internet was developed by many people over many years.

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List of inventors

This is a list of notable inventors.

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List of Microsoft Windows components

The following is a list of Microsoft Windows components.

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List of RFCs

This is a partial list of RFCs (request for comments memoranda).

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List of TCP and UDP port numbers

This is a list of TCP and UDP port numbers used by protocols of the application layer of the Internet protocol suite for the establishment of host-to-host connectivity.

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List of Unix daemons

This is a list of Unix daemons that are found on various Unix-like operating systems.

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Low latency (capital markets)

In capital markets, low latency is the use of algorithmic trading to react to market events faster than the competition to increase profitability of trades.

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LwIP

lwIP (lightweight IP) is a widely used open source TCP/IP stack designed for embedded systems.

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MacOS High Sierra

macOS High Sierra (version 10.13) is the fourteenth major release of macOS, Apple Inc.'s desktop operating system for Macintosh computers.

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MacOS Server

macOS Server, formerly Mac OS X Server and OS X Server, is a separately sold operating system add-on which provides additional server programs along with management and administration tools for macOS.

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MagCom

MagCom was a Norwegian manufacturer of cellular GSM handsets.

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Manitoba Internet Exchange

The Manitoba Internet Exchange Inc (MBIX) is an Internet exchange point situated in Winnipeg, Manitoba, Canada.

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Marzullo's algorithm

Marzullo's algorithm, invented by Keith Marzullo for his Ph.D. dissertation in 1984, is an agreement algorithm used to select sources for estimating accurate time from a number of noisy time sources.

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Mcast.net

mcast.net is a second level domain reserved by IANA and maintained by Verisign used to bind DNS records unique to multicast addresses.

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Merit Network

Merit Network, Inc., is a nonprofit member-governed organization providing high-performance computer networking and related services to educational, government, health care, and nonprofit organizations, primarily in Michigan.

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Multicast address

A multicast address is a logical identifier for a group of hosts in a computer network that are available to process datagrams or frames intended to be multicast for a designated network service.

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National Research Council Time Signal

The National Research Council Time Signal is Canada's longest running but shortest radio programme.

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NetBSD

NetBSD is a free and open source Unix-like operating system that descends from Berkeley Software Distribution (BSD), a Research Unix derivative developed at the University of California, Berkeley.

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Netnod

Netnod Internet Exchange i Sverige is a non-profit, neutral and independent Internet infrastructure organisation based in Sweden.

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NetworkManager

NetworkManager is a daemon that sits on top of libudev and other Linux kernel interfaces (and a couple of other daemons) and provides a high-level interface for the configuration of the network interfaces.

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NITZ

NITZ, or Network Identity and Time Zone, is a mechanism for provisioning local time and date, time zone and DST offset, as well as network provider identity information, to mobile devices via a wireless network.

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NTP

NTP is a three-letter initialism which may stand for.

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NTP pool

The NTP pool is a dynamic collection of networked computers that volunteer to provide highly accurate time via the Network Time Protocol to clients worldwide.

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NTP server misuse and abuse

NTP server misuse and abuse covers a number of practices which cause damage or degradation to a Network Time Protocol (NTP) server, ranging from flooding it with traffic (effectively a DDoS attack) or violating the server's access policy or the NTP.

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Ntpd

The Network Time Protocol daemon (ntpd) is an operating system program that maintains the system time in synchronization with time servers using the Network Time Protocol (NTP).

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Ntpdate

ntpdate is a computer program used to quickly synchronize and set computers' date and time by querying a Network Time Protocol (NTP) server.

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Nucleus RTOS

Nucleus RTOS is a real-time operating system (RTOS) offered by the Embedded Software Division of Mentor Graphics, a Siemens Business, supporting 32 and 64 bit embedded platforms.

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NuttX

NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint.

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OpenBSD

OpenBSD is a free and open-source Unix-like computer operating system descended from Berkeley Software Distribution (BSD), a Research Unix derivative developed at the University of California, Berkeley.

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OpenNTPD

OpenNTPD is a Unix system daemon implementing the Network Time Protocol to synchronize the local clock of a computer system with remote NTP servers.

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Oscilloquartz

Oscilloquartz, a company of ADVA Optical Networking, is a manufacturer of frequency sources, such as GPS& GLONASS receivers or caesium clocks for telecommunications applications and has been producing similar products for about 60 years.

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Outline of the Internet

The following outline is provided as an overview of and topical guide to the Internet.

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PandaBoard

The PandaBoard is a low-power, low-cost single-board computer development platform based on the Texas Instruments OMAP4430 system on a chip (SoC).

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Port (computer networking)

In computer networking, a port is an endpoint of communication in an operating system, which identifies a specific process or a type of network service running on that system.

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Power over Ethernet

Power over Ethernet or PoE describes any of several standard or ad-hoc systems which pass electric power along with data on twisted pair Ethernet cabling.

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Precision Time Protocol

The Precision Time Protocol (PTP) is a protocol used to synchronize clocks throughout a computer network.

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Pulse-per-second signal

A pulse per second (PPS or 1PPS) is an electrical signal that has a width of less than one second and a sharply rising or abruptly falling edge that accurately repeats once per second.

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Raspberry Pi

The Raspberry Pi is a series of small single-board computers developed in the United Kingdom by the Raspberry Pi Foundation to promote the teaching of basic computer science in schools and in developing countries.

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Rdate

On Unix-like operating systems, rdate is a tool for querying the current time from a network server and, optionally, setting the system time.

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Real-time clock

A real-time clock (RTC) is a computer clock (most often in the form of an integrated circuit) that keeps track of the current time.

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RESTENA

RESTENA (Réseau Téléinformatique de l'Education Nationale et de la Recherche) is the very high speed network for the education and research community of the Grand Duchy of Luxembourg.

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RIPE Atlas

RIPE Atlas is a global, open, distributed Internet measurement platform, consisting of thousands of measurement devices that measure Internet connectivity in real time.

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ROA Time

The ROA Time is the official time of Spain.

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Session Description Protocol

The Session Description Protocol (SDP) is a format for describing streaming media communications parameters.

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SGI Dogfight

Dogfight is a demonstration program initially written by Gary Tarolli (later founder of 3dfx) at Silicon Graphics, Inc.

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Slew

No description.

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South African Standard Time

South African Standard Time (SAST) is the time zone used by all of South Africa, Botswana as well as Swaziland and Lesotho.

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Symmetricom

Symmetricom, Inc.

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Synchronization

Synchronization is the coordination of events to operate a system in unison.

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Synchronous Ethernet

Synchronous Ethernet, also referred as SyncE, is an ITU-T standard for computer networking that facilitates the transference of clock signals over the Ethernet physical layer.

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System time

In computer science and computer programming, system time represents a computer system's notion of the passing of time.

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Time

Time is the indefinite continued progress of existence and events that occur in apparently irreversible succession from the past through the present to the future.

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Time and frequency transfer

Time and frequency transfer describes mechanisms for comparing measurements of time and frequency from one location to another.

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Time in New Zealand

Time in New Zealand, by law, is divided into two standard time zones.

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Time in Portugal

Portugal has two time zones and observes daylight saving time.

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Time Protocol

The Time Protocol is a network protocol in the Internet Protocol Suite defined in 1983 in RFC 868 by Jon Postel and K. Harrenstein.

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Time server

A time server is a server computer that reads the actual time from a reference clock and distributes this information to its clients using a computer network.

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Time signal

A time signal is a visible, audible, mechanical, or electronic signal used as a reference to determine the time of day.

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Time synchronization in North America

Time synchronization in North America can be achieved with many different methods, some of which require only a telephone, while others require expensive, sensitive, and rare electronic equipment.

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Time transfer

Time transfer is a scheme where multiple sites share a precise reference time.

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Timecode

A timecode (alternatively, time code) is a sequence of numeric codes generated at regular intervals by a timing synchronization system.

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Toronto Internet Exchange

The Toronto Internet Exchange Community (TorIX) is a not-for-profit Internet Exchange Point (IXP) located in a carrier hotel at 151 Front Street West and Equinix's TR2 data centre in Toronto, Ontario, Canada.

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Trusted time

Trusted time data is time data from a provable source.

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TSIG

TSIG (Transaction SIGnature) is a computer-networking protocol defined in RFC 2845.

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United States Naval Observatory

The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States, with a primary mission to produce Positioning, Navigation and Timing (PNT) for the United States Navy and the United States Department of Defense.

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Unix time

Unix time (also known as POSIX time or UNIX Epoch time) is a system for describing a point in time, defined as the number of seconds that have elapsed since 00:00:00 Coordinated Universal Time (UTC), Thursday, 1 January 1970,.

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User Datagram Protocol

In computer networking, the User Datagram Protocol (UDP) is one of the core members of the Internet protocol suite.

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Windows 2000

Windows 2000 (codenamed NT 5.0) is an operating system for use on both client and server computers.

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Year 2038 problem

The Year 2038 problem relates to representing time in many digital systems as number of seconds passed since 1 January 1970 and storing it as a signed 32-bit integer.

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Zeroshell

Zeroshell is a small open-source Linux distribution for servers and embedded systems which aims to provide network services.

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2036

No description.

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Redirects here:

Digital Time Synchronization Service, NTP clock strata, NTP clock stratum, NTP server, Network time protocol, Ntp4, Port 123, RFC 1305, SNTP, Simple Network Time Protocol, Stratum 0, Stratum 1, Stratum 2, Stratum 3, Timed.

References

[1] https://en.wikipedia.org/wiki/Network_Time_Protocol

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