Cisco Career Certifications

Cisco Career Certifications are IT Professional certifications for Cisco Systems products. The tests are administered by Pearson VUE. There are five levels of certification: Entry, Associate, Professional, Expert, and Architect, as well as seven different paths, Routing & Switching, Design, Network Security, Service Provider, Storage Networking, Voice, and Wireless.

Online trading community

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Part of a series on Electronic commerce

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E-procurement

Purchase-to-pay

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An online trading community provides participants with a structured method for trading, bartering, or selling goods and services. These communities often have forums and chatrooms designed to facilitate communication between the members. An online trading community can be likened electronic equivalent of a bazaar, flea market, or garage sale.

International domain name systems

The Domain Name System (DNS) is a hierarchical naming system for computers, services, or any resource connected to the Internet or a private network. It associates various information with domain names assigned to each of the participants. Most importantly, it translates domain names meaningful to humans into the numerical (binary) identifiers associated with networking equipment for the purpose of locating and addressing these devices worldwide. An often used analogy to explain the Domain Name System is that it serves as the "phone book" for the Internet by translating human-friendly computer hostnames into IP addresses. For example, www.example.com translates to 208.77.188.166.