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TCP/IP Definition: TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic communication language or protocol of the Internet. It can also be used as a communications protocol in a private network (either an intranet or an extranet). When you are set up with direct access to the Internet, your computer is provided with a copy of the TCP/IP program just as every other computer that you may send messages to or get information from also has a copy of TCP/IP. TCP/IP is a two-layer program. The higher layer, Transmission Control Protocol, manages the assembling of a message or file into smaller packets that are transmitted over the Internet and received by a TCP layer that reassembles the packets into the original message. The lower layer, Internet Protocol, handles the address part of each packet so that it gets to the right destination. Each gateway computer on the network checks this address to see where to forward the message. Even though some packets from the same message are routed differently than others, they'll be reassembled at the destination. TCP/IP uses the client/server model of communication in which a computer user (a client) requests and is provided a service (such as sending a Web page) by another computer (a server) in the network. TCP/IP communication is primarily point-to-point, meaning each communication is from one point (or host computer) in the network to another point or host computer. TCP/IP and the higher-level applications that use it are collectively said to be "stateless" because each client request is considered a new request unrelated to any previous one (unlike ordinary phone conversations that require a dedicated connection for the call duration). Being stateless frees network paths so that everyone can use them continuously. (Note that the TCP layer itself is not stateless as far as any one message is concerned. Its connection remains in place until all packets in a message have been received.) Many Internet users are familiar with the even higher layer application protocols that use TCP/IP to get to the Internet. These include the World Wide Web's Hypertext Transfer Protocol (HTTP), the File Transfer Protocol (FTP), Telnet (Telnet) which lets you logon to remote computers, and the Simple Mail Transfer Protocol (SMTP). These and other protocols are often packaged together with TCP/IP as a "suite." Personal computer users with an analog phone modem connection to the Internet usually get to the Internet through the Serial Line Internet Protocol (SLIP) or the Point-to-Point Protocol (PPP). These protocols encapsulate the IP packets so that they can be sent over the dial-up phone connection to an access provider's modem. Protocols related to TCP/IP include the User Datagram Protocol (UDP), which is used instead of TCP for special purposes. Other protocols are used by network host computers for exchanging router information. These include the Internet Control Message Protocol (ICMP), the Interior Gateway Protocol (IGP), the Exterior Gateway Protocol (EGP), and the Border Gateway Protocol (BGP). |
Microsoft ® Certifications MCSE Microsoft Certified Systems
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| EMC Proven Professional Storage Administrator This track certifies customers and partners in the usability and administration of EMC information storage and management solutions. Development of expert knowledge in the management of EMC solutions in heterogeneous data center environments is available through this track and its related specialties. EMC Proven Professional Customer Engineer This track certifies partners in the installation, maintenance, and troubleshooting of EMC information storage and management hardware. Development of expert knowledge in the installation and configuration of Symmetrix, CLARiiON, Celerra, and Centera platforms. EMC Proven Professional Implementation Engineer This track certifies partners in the implementation, configuration, and troubleshooting of EMC networked storage solutions. Development of expert knowledge in the implementation and configuration of networked storage and business continuity software and solutions in multiple storage platforms, operating systems, and network environments is available through this track and its related specialties. CCVP Certification The CCVP certification recognizes the increased importance placed on IT professionals of today who are responsible for integrating voice technology into underlying network architectures. Cisco CCIP Certification The CCIP (Cisco Certified Internetwork Professional) provides individuals working in service provider organizations with competencies in infrastructure IP networking solutions. Cisco Routing and Switching Field Specialist Designed for Cisco Channel Partners and Resellers, the Cisco Routing and Switching Field Specialist will demonstrate the skills and knowledge required to successfully install, configure, monitor, and support the advanced capabilities of Cisco routing and switching solutions. Oracle E-Business Suite 11i Financials Certified Professional Consultant Oracle E-Business Suite 11i Financials is a complex, powerful tool for organizations to integrate and manage their entire set of financial processes and functions. Siebel 7.7 Certified Consultant Siebel Certified Consultants possess a core understanding-derived from both formal course-based training and hands on lab experience of Siebel eBusiness Applications. Siebel 7.7 Certified Business Analyst Siebel Certified Business Analysts have reviewed case-study materials from hundreds of Siebel Applications implementations and have completed comprehensive hands-on labs. Siebel 7.7 Certified Application Developer Professional The Application Developer Professional certification is designed for professionals who work on Analytics Intelligence Dashboards for both stand-alone and integrated Siebel Analytics applications. Training for IT Professionals Microsoft Certifications: Search this directory for information about Microsoft Certifications, and find the perfect campus or online degree program. ...www.actualtests.com` IT Career and Certification Resources IT knowledge center that delivers the insightful, unbiased, practical how-to articles, interviews and reviews on IT Career and Certification topics....www.actualtests.com` IT Certification Exam Services certification Certification is the process of regulation based on meeting select eligibility requirements to maintain professional standards within ....www.actualtests.com` Professional Certification Our Job-Specific Professional Certification Programs will validate your level of technical expertise, provide you with tangible credentials and accelerate ...www.actualtests.com Security Certification Essentials Considering a security certification Get the facts you need to choose between CISSP, GSE, CCSP, and others. Details on the benefits, costs and rewards of ...www.actualtests.com IT Certifications - Training Variety of certification options in networking, databases, programming, web development, IT management-combined online courses with on-campus labs to ...www.actualtests.com What is MCSE? A Microsoft Certified Systems Engineer (MCSE) is a person who is certified by Microsoft to work with the within the latest system. What are the Steps to Becoming MCSD Certified? MCSD certification is a certification program provided by Microsoft Corporation. MCSD is an acronym for Microsoft Certified Solution Developer. HP Accredited Sales Professional Requires an individual to gather customer business requirements, recognize the opportunities, and make recommendations from the HP solutions portfolio that would solve business needs. HP Accredited Sales Consultant Requires an individual to gather customer business requirements and successfully position and sell HP enterprise products and services in an engagement with a customer. HP Accredited Presales Professional Requires an individual to gather customer business requirements, recognize opportunities and make recommendations for a solution (potentially including application, platform, operating system, storage, network and option components) that will solve business needs. HP Accredited Presales Consultant Requires an individual to gather customer business requirements, then plan and design an enterprise solution within a specialty area (e.g. XP Storage, Superdome). Citrix Certified Administrator (CCA) The CCA certification program focuses on the skills and knowledge foundation necessary to successfully support an existing implementation of specific Citrix products. Citrix Certified Enterprise Administrator (CCEA) The CCEA certification program focuses on expanding the skills and knowledge beyond that of the Citrix Certified Administrator (CCA) certification program. Citrix Certified Integration Architect (CCIA) This CCIA program focuses on best practices recommended by Citrix for analysis, design, and build/test of Citrix technologies. CCEA for Citrix Presentation Server 4 Citrix’s most extensive and recognized certification has been updated and improved to support the release of Citrix’s latest products. MCTS - Biz Talk Server 2006 Certification As an MCTS, you'll have a deep and broad understanding of the design, development and deployment of distributed applications that use BizTalk Server 2006. MCSE on Windows Server 2003 Certification As an MCSE, you'll be expert in designing and implementing the infrastructure for business solutions based on the Microsoft Windows 2000 platform and Microsoft Windows Server System. MCSE Messaging on Windows Server 2003 Certification As an MCSE in Messaging, you'll be expert in designing and implementing the infrastructure for business solutions on the Microsoft Windows 2000 platform and Microsoft Windows Server System. MCSE Security on Windows Server 2003 Certification As an MCSE, you'll be expert in designing and implementing the infrastructure for business solutions based on the Microsoft Windows 2000 platform and Microsoft Windows Server System. MCSD .NET Certification Practice Test for MCSD.NET certification. 100% money back guarantee. Pass MCSD.NET certification exam in the first attempt. MCDBA Self Preparation Kit Microsoft Certification : Microsoft Certified Database Administrator : SQL Server 2000 : MCDBA and more The Value of Microsoft Certifications What is the value of Microsoft certifications? Read the articles why to chose the Microsoft certification for your career in IT. MCSE 2003 Braindumps MCSE Braindumps, CompTIA Braindumps, Cisco Braindumps, Latest dump and no boot camp required with our brain dumps - pass your certification exams. EMC Proven Professional Storage Technologist First in the industry, the Storage Technologist track is suitable for experienced storage professionals knowledgeable in specific segments who may not have exposure to all of the other segments of modern storage infrastructure. |