Network Topologies • LANs and WANs - Geographical coverage • LANs – A single geographical location‚ such as office building‚ school‚ etc – Typically High speed and cheaper. • WANs – Spans more than one geographical location often connecting separated LANs – Slower – Costly hardware‚ routers‚ dedicated leased lines and complicated implementation procedures. 1 Network Topologies • Topology - Physical and logical network layout – Physical – actual layout of the computer cables and other
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Network monitoring tools can have many important functions that can increase the scaleability and usefulness of a network. They ensure that the computers and devices on the network are functioning at the highest level possible‚ and are available. They also can help increase the productivity and ease of an IT department’s job‚ so it’s important that they choose the right product that suits their needs the best. Network monitoring software detects and reports failures of connections and devices.
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(a popular social network that dominated traffic. First platform to feature profile customization for users). Over the centuries‚ people adopted knowledge for Social Networking‚ have studied about it‚ and create a site. One of the most visited sites is Facebook (2004). The history of this social networking site is said to be a Harvard-only social network. But it quickly expanded to other schools‚ then to high schools‚ businesses and eventually everyone. We define social network sites as web-based
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Social Networks: For or Against? Introduction Over the years there has been a dramatic increase in the use of social networking sites such as: MySpace‚ Twitter‚ Facebook and many more. “Starting out as an easy way of communication‚ social networks have accelerated their pace towards transforming our lives.” (Livingstone‚ S. 2008) Social networks are an effective and cost free way to allow people who are registered to share: interests‚ beliefs‚ real-life experiences and general social interaction
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of Network Documentation Undocumented networks are extremely common. Many times this is related more to the difficulty of keeping the documentation up to date rather than to the difficulty of the documentation process itself. Many LAN Administrators had big dreams at one time of keeping elaborate drawings detailing every last aspect of the network. However‚ networks tend to change too frequently for such drawings to stay current. In spite of the difficulty‚ having a well documented network can
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nowadays. It does not matter what kind of the profession is‚ social networks is used daily by people around the world. Even though today social networking is very famous among teenagers‚ it is also has bad effect on teenagers. Social networking can affect the mental of teenagers. It gives influence to teenagers. For example‚ many couples have met each other through Facebook‚ fell in love and also broke up through this social network. Things are negatively affect relationship and real relationships
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Networking Security Fundamentals CIS 333 Nowadays‚ security software is becoming a major part of enterprise business. Software development is activity connected with advanced technology and high level of knowledge. After viewing the growing number of malicious activity‚ it is now imperative that we develop a plan and stick to it. There are so many threats to vulnerabilities and threats that leave systems open to malicious attacks. Whenever you sit at a computer and log onto the internet‚ your
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October 9‚ 2011 Common Network Vulnerabilities (The effects of the absence of knowledge on unencrypted communication: Setting ground rules for an organizations internal structure) “Businesses‚ governments‚ and other organizations face a wide array of information security risks. Some threaten the confidentiality of private information‚ some threaten the integrity of data and operations‚ and still others threaten to disrupt availability of critical systems” (Sullivan‚
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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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A network -Collection of devices that can talk to each other. Applications that use the network -Web browser and FTP -Database application -Instant messenger -Email -Online games Considerations for network applications -Speed -bit byte (8 bits) kilobyte (1024 bytes) megabyte (1024 kilobytes) gigabyte (1024) terabyte (1024 gigabytes) -Delay -Voip has certain delay requirements for voice to be transmitted into data from one point to the next -Availability -How available is your
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