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    • TCP/IP Ports

      TCP/IP Ports

      TCP and IP are two seperate protocols. IP (Internet Protocol) is a network layer protocol, while TCP (Transmission Control Protocol) is a transport layer protocol. Every computer and network device attached to the Internet has at least one IP address. For example, the IP address of this web server is 66.37.153.81. Then, within each of

    • Single Mode Fiber

      Single Mode Fiber

      A single mode fiber is a fiber optical cable that uses only one ray of light known as a “mode”. A single mode fiber can be used to transfer data in either direction at incredibly fast speeds and may stretch along hundreds or even thousands of kilometers. These factors allow single mode fibers to provide

    • ISDN Modem

      ISDN Modem

      ISDN – otherwise known as integrated services digital network – is a digital phone connection that can transmit data, voice and video over a normal telephone line. It was meant to be a method of transmitting information much faster than a typical analog phone; however, the phone industry was able to survive the arrival of

    • Hot Standby Router Protocol

      Hot Standby Router Protocol

      The Hot Standby Router Prtocol (HSRP) is a networking protocol that supports the non-disruptive failover of Internet Protocol (IP) traffic in special circumstances. HSRP also allows network hosts to look like they are using a single router and keep connected if the first hop router being used fails to respond. The protocol guards against the

    • 192.168.1.245

      192.168.1.245

      Cisco is a leading manufacturer of networking devices such as modems, wireless routers, and network storage devices. Cisco products are sold worldwide to millions of consumers for both residential and commercial purposes. Cisco also markets a number of data plans for some of the largest Internet Service Providers in the world. What is 192.168.1.245? 192.168.1.245

    • Dynamic DNS

      Dynamic DNS

      Dynamic DNS is a technology that allows you to update the IP address of a domain in real time. In order to fully understand how Dynamic DNS works, it is important to first understand domain names and name servers. Essentially, all website domain names are held on computer servers known as name servers. These servers

    • What is a QSIG?

      What is a QSIG?

      QSIG is a signaling protocol that is  based on ISDN. It communicates signals between private branch exchanges (PBXs) within a Private Integrated Services Network (PISN) using the application-level ROSE and connection-level Q9.31 protocols. QSIG uses ISDN as the physical link layer in the exchanges and is often used in enterprise voice or integrated service networks.

    • DNS (Domain Name System)

      DNS (Domain Name System)

      Domain Name System (DNS) is an Internet Engineering Task Force (IETF) standard name service which enables applications and users to connect to hosts in TCP/IP based networks by specifying a name. DNS makes it possible to assign domain names to organizations independent of the routing of the numerical IP address. DNS is a hierarchically distributed database that creates hierarchical names

    • DOCSIS (Data Over Cable Service Interface Specification)

      DOCSIS (Data Over Cable Service Interface Specification)

      Data Over Cable Service Interface Specification (DOCSIS) defines the interface standards for cable modems and supporting equipment involved in high speed data transfer and distribution over cable television system networks. It permits additional high-speed data transfer over an existing cable TV system and is widely used by television operators to offer Internet access through an

    • What is EIGRP?

      What is EIGRP?

      Local and international networks require information to be constantly updated in order to properly route communications. Routing protocols were developed in order to help keep information flowing to the proper locations and to maintain network connectivity on both LAN and WAN. The Enhanced Interior Gateway Routing Protocol (EIGRP) is one of the most popular internal

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