The OSI model

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Follow @ASM_Educational Taking a Network+ exam? Follow us on Facebook and ask us about our study group.     The (Open Systems Interconnection) OSI has been developed by International Organization for Standardization (ISO). The OSI model provides a framework for creating and implementing networking standards and devices and describes how network applications on different computers… Read more »

802.11: Wi-Fi Standards

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Follow @ASM_Educational Taking a Network+ exam? Follow us on Facebook and ask us about our study group. WiFi is not an acronym but a brand name created by a marketing firm that’s meant to serve as an interoperability seal for marketing efforts. WiFi technology however provides wireless Internet access via the use of radio waves… Read more »

CompTIA Network+ Common Security Threats

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Source mc mcse Certification Resources     DoS (Denial of Service) – A DoS attack is a common type of attack in which false requests to a server overload it to the point that it is unable to handle valid requests, cause it to reset, or shut it down completely.

CompTIA Network+ Methods of User Authentication

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Source mc mcse Certification Resources     PKI (Public Key Infrastructure) – A public key infrastructure (PKI) is the combination of software, encryption technologies, processes, and services that enable an organization to secure its communications and business transactions.

CompTIA Network+ Network Access Security

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Source mc mcse Certification Resources     ACL (Access Control List) – An ACL is a table in an operating system or network device (such as a router) that denies or allows access to resources.

CompTIA Network+ Hardware Tools

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Source mc mcse Certification Resources     Cable Testers – Cable testers are electronic devices used to test a cable’s integrity by checking for opens and shorts which can cause connectivity problems.

CompTIA Network+ Firewalls

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Source mc mcse Certification Resources     Application Layer vs. Network Layer – An application layer firewall works at the application layer of a protocol stack.

CompTIA Network+ OSI model

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The Open Systems Interconnection model (OSI model) is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to their underlying internal structure and technology.

CompTIA Network+ Install components of Wiring Distribution

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Vertical Cross Connect – is a location within a building where cables originate and / or are terminated, reconnected using jumpers or pass throughs or are connected to patch panels or other similar devices where the locations are from upper or lower floors in the building.

CompTIA Network+ Command Line Interface Tools

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Traceroute – A command-line troubleshooting tool that enables you to view the route to a specified host. This will show how many hops the packets have to travel and how long it takes. In Windows operating systems, the command used is “tracert”.