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    Local Area Networks

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    IT 548 Telecommunications & Networking Local Area Networks Hood College Dept. of Computer Science Spring 2013 Layer 2: The Datalink Layer • • 2 Datalink layer provides a reliable communications link between devices. Breaks a data stream into chunks called frames‚ or cells. Three key functions: • error detection • error correction • flow control • • In LANs DL can be broken down into two sub-layers: • media access control (MAC)‫‏‬ • logical link control (LLC). • flow and

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    Local Area Networks

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    LANs: Local Area Networks Local Area Networks also called LANs have been a major player in industrialization of computers. In the past 20 or so years the worlds industry has be invaded with new computer technology. It has made such an impact on the way we do business that it has become essential with an ever-growing need for improvement. LANs give an employer the ability to share information between computers with a simple relatively inexpensive system of network cards and software. It also

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    Local Network Area

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    Essay 16 Local Area Networks Marshall D. Abrams and Harold J. Podell L ocal area n e t w ork (L AN) communicat io ns s ecurity is address ed in t his essay. LANs are introduc ed as providing: (1) a privat e communicat io ns facility‚ (2) s ervic es ov er a r elativ ely limit ed g e ographic area‚ (3) a high dat a rat e for comput er communicat io ns‚ and (4) common acc ess t o a wid e rang e of d evice s and s ervic es. S ecurity issu es p ert in e nt t o L ANs ar e discuss e d. For e

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    Wireless Local Area Network Background The first wireless computer communication network ALOHAnet (operational in 1971) was developed by Norman Abramson‚ a professor at the University of Hawaii. At first‚ the wireless LAN was so costly that it was just used as an alternative to the places where the cabling was difficult or impossible. Recent developments included industry specific solutions and proprietary protocols‚ but were replaced by various versions of IEEE 802.11. In 2009‚ 802.11

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    communication network‚ ALOHAnet (operational in 1971)‚ using low-cost ham-like radios. The system included seven computers deployed over four islands to communicate with the central computer on the Oahu Island without using phone lines. Definition A wireless local area network (WLAN) links two or more devices using some wireless distribution method (typically spread-spectrum or OFDM radio)‚ and usually providing a connection through an access point to the wider Internet. This gives users the mobility

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    Network Security

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    This assignment consists of two (2) sections: an infrastructure document and a revised Gantt chart or project plan. You must submit both sections as separate files for the completion of this assignment. Label each file name according to the section of the assignment it is written for. . The infrastructure which encompasses the network solution and security considerations is a major consideration for your company. Considering that the company will be expanding from one (1) floor to three (3) floors

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    Network Security

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    describes the basic threats to the network security and the basic issues of interest for designing a secure network. it describes the important aspects of network security. A secure network is one which is free of unauthorized entries and hackers INTRODUCTION Over the past few years‚ Internet-enabled business‚ or e-business‚ has drastically improved efficiency and revenue growth. E-business applications such as e-commerce‚ supply-chain management‚ and remote access allow companies to streamline

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    Network Security

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    INTRODUCTION In today’s modern world computer networks are the basic source of information exchange for all types of businesses. Different technologies are used within the context of networking depending on the requirements of an organization. Ethernet is off course the best technology for the “local area network” (LAN)‚ but when the organization spread their business to much longer distances (cities) then WAN technologies need to be deployed to keep the business running. The selection of an appropriate

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    Network Security

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    (DSIT) Workshop where a group of security experts outlined the emerging threat of distributed denial of service (DDoS) attack technology. Since then‚ denial of service (DoS) attack technology has continued to evolve and continues to be used to attack and impact Internet infrastructures. Advances in intruder automation techniques have led to a steady stream of new self-propagating worms in 2001‚ some of which have been used to deploy DoS attack technology. Windows end-users and Internet routing technology

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    Network Security

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    Body of Knowledge contains • The history of (ISC)2 and the CISSP exam • Recertification requirements • An assessment test to gauge your current security knowledge This book is intended to welcome you to the exciting world of security and start you on a new path toward obtaining your CISSP certification! The Certified Information Systems Security Professional (CISSP) exam covers ten domains‚ each of which may be considered a full field of study in itself‚ with many individual books and papers

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