Network security concepts Network security starts with authenticating‚ commonly with a username and a password. Since this requires just one detail authenticating the user name —i.e. the password— this is sometimes termed one-factor authentication. With two-factor authentication‚ something the user ’has’ is also used (e.g. a security token or ’dongle’‚ an ATM card‚ or a mobile phone); and with three-factor authentication‚ something the user ’is’ is also used (e.g. a fingerprint or retinal scan)
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Carrier Sense Multiple Access with Collision Avoidance. However‚ simple CSMA is susceptible to the hidden node problem‚ especially in so called ad hoc networks where a node may communicate directly with every other node in range or using intermediate nodes as relays otherwise. Hidden nodes cause costly packet collisions and thus significantly affect network performance. In order to combat the hidden node problem‚ a mechanism known as Request to Send/Clear to Send (RTS/CTS) handshake is often used. RTS/CTS
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The company GMA Network‚ Inc. is a Filipino media conglomerate based in Diliman‚ Quezon City‚ Philippines. It is primary involved in radio and television broadcasting‚ with subsidiaries dealing in various media related businesses. The majority of its profits are derived from publicity and marketing incomes associated to television distribution. The company has 47 VHF and 13 UHF television stations‚ including its flagship station in Metropolitan Manila and originating stations in the provinces that
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TYPES OF DATA FLOW DIAGRAM: LOGICAL DFD PHYSICAL DFD Data Flow Diagrams (DFDs) are categorized as either logical or physical. A logical DFD focuses on the business and how the business operates. It describes the business events that take place and the data required and produced by each event. On the other hand‚ a physical DFD shows how the system will be implemented. Design Feature Logical Physical What the model depicts How the business operates How the system will be implemented
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Network Hardening Unit 8 Assignment 1 It is very important to go through the process of hardening. Hardening is where you change the hardware and software configurations to make computers and devices as secure as possible. I picked the network layout 1-the workgroup . First with the workstations and laptops you need to shut down the unneeded services or programs or even uninstall them. I would also have some good anti-virus software on the workstations. You also need a hardened image for
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1 Multi-Channel Scheduling and Spanning Trees: Throughput-Delay Trade-off for Fast Data Collection in Sensor Networks ¨ Amitabha Ghosh‚ Ozlem Durmaz Incel‚ V. S. Anil Kumar‚ and Bhaskar Krishnamachari Two primary factors that affect the data collection rate (throughput) and timeliness (delay) are: (i) efficiency of the link scheduling protocol‚ and (ii) structure of the routing tree in terms of its node degrees and radius. In this paper‚ we utilize multiple frequency channels and design an
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Network Topologies Network topologies are an important part of the network. Without the proper topology‚ the network may not meet the needs of the organization. The layout of a network is referred to as the topology. How nodes in a network are connected to each other and communicate is determined by the topology. There are three basic topologies with several typical variations‚ or combinations. A description of four topologies follows. Mesh Topology Mesh topology is the first topology discussed
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single area. I also learned how to function a fully functional network in which each router has connectivity to all other networks. I learned how to configure OSPF‚ determine IP routing status by reviewing the IP route table‚ migrate from IGRP to OSPF routing‚ and how to verify network connectivity using ping and verify OSPF neighbor adjacencies. I will benefit in my academic and professional career by furthering my knowledge in the network world and giving me a stable and future job. Copy and Paste
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3HRC - Understanding Organisations and the Role of Human Resources - Activity 2 The following report contains information on how Human Resources support the organisation‚ line managers and staff. Human resources can be seen as a medium between employee and employer to maintain that all policies and procedures are completed correctly and fairly. Looking after your workforce‚ but complying with business strategy to ensure business goals and objectives are achieved. During the time of your employment
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Our topic is that social networks encourage people to have good “interpersonal skills”. According to the research‚ the most popular method of communication among teens is social network. This format is an opportunity for teenagers to practice and develop social skills. Firstly‚ social network provides a virtual place to spend time and share thoughts and objects with personal meaning‚ such as pictures and stories‚ and remain closely connected with friends regardless of geographic distance. For example
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