All Posts in "COMPUTER NETWORKS"

Home Area NetworksIntelligent Grid connectivity continues to obtain momentum as global utilities embrace the technologies and invest in the infrastructure. California’s massive investor-owned utilities are below the gun to start out turning on their intelligent meters’ property location network (HAN) capabilities – and they are starting to make it come about. Power consumption data, collected by meters, can be sent directly to the Distribution Method Operator servers (DSO legacy systems in Figure six ) exploiting energy line communication protocol rather of using the HAN connection.

This section presents a probable implementation of a house area network for clever energy management, discusses security difficulties, and analyzes some industrial hardware/application options for its implementation. A private area network, or PAN, is a computer network organized around an person individual inside a single developing. Each solutions can be utilized to upgrade the current device’s style enabling them to join home area networks. A wide location network, or WAN, occupies a quite huge location, such as an entire country or the complete planet.

There are so numerous distinctive sorts of personal computer networks in existence, it can be challenging to comprehend the differences among them, especially the ones with quite equivalent-sounding names. This paper discusses aims, network architecture, and security/privacy complications of a Intelligent Grid in Section 2 Moreover some options are proposed in order to define a high-level architecture implementing privacy and security approaches in the grid. Her current investigation interest incorporates ultra wideband communications, electromagnetic compatibility, spectrum management and Smart Grid.

From an ICT point of view a Sensible Grid is a network of networks” including wide region network (WAN), regional region network (LAN), and residence area network (HAN), going from the energy generation side to the customer’s premises side. A way to perform this evolution is the introduction of microgrids 11 which are … Continue reading >>>

Michael Green by — April 1, 2015 in Home Area Networks

Backbone NetworksThe College Radio Tuner for the IBS Student Radio Network by Backbone Networks delivers the 1st accurate network of college radio stations to iPhone&reg and iPod Touch&reg users everywhere. Ahead of we go over these architectures, we very first will have to discuss the way in which network designers believe about backbone styles and how to combine them that is, the various layers of backbones that exist in most organizations nowadays. As the shared circuits in LANs and BNs have become overloaded with targeted traffic, networks are starting to use switched point-to-point circuits rather than shared multipoint circuits. On a big scale, a backbone is a set of pathways to which other substantial networks connect for extended distance communication.

For this purpose, gigabit ethernet could stay primarily a backbone technology for use only in point-to-point full duplex data communications links. Asynchronous Transfer Mode (ATM) (a.k.a. cell relay) is a technology originally made for use in wide area networks that is now often used in backbone networks. It might also be known as an enterprise network if it connects all networks inside a organization.

This form of network can have daisy chain linked devices for the backbone, on the other hand, designer must think about the similar limitations as for the serial backbone. It is as rapid as a bridge for similar data link variety networks, but can also connect distinct data hyperlink sort networks. The idea behind switched ethernet – and all switched media technologies – is straightforward replace the LAN hub with a switch.

Every single floor in the developing has a set of switches and access points that serve the LANs on that floor. The conventional notion of a backbone is a bundle of wires, which serves the many networks as the key super highway for data. Chapter … Continue reading >>>

Michael Green by — March 24, 2015 in Backbone Networks

Metropolitan Area NetworksA metropolitan region network (MAN) is related to a nearby location network (LAN) but spans an whole city or campus. MANs can bridge Nearby Location Networks without the need of any cables by working with microwave, radio wireless communication or infra-red laser which transmits data wirelessly. A college or university that operates from different web pages would use a Metropolitan Area Network to enable students to share the same mastering platform. A neighborhood authority may well use a Metropolitan Region Network to link libraries so that guests can search a catalogue and order books that are held in a further library.

However, these networks are largely nevertheless concentrated in and near major metropolitan locations. Same applies to logical topology as well, which enriches the list of mixture components necessary to style MANs. LAN networks can be implemented in many approaches, for instance twisted pair cables and a wireless Wi-Fi with the IEEE 802.11 regular can be utilised for this purpose. Ā e use of multimedia applications more than IP with top quality-of-service (QoS) help is now a reality in corporate networks and is quickly expanding to the wireless networks.

MANs deliver Internet connectivity for LANs in a metropolitan area, and connect them to wider location networks like the World wide web. 1 of the positive aspects of networks like PAN and LAN is that they can be kept totally private by restricting some communications to the connections within the network. With this said, obviously the mostly utilised networking media to create MANs hyperlinks, in general it’s a mixture of fiber, wired and wireless technologies. Wired networks are not handy for public use, but in some cases acceptable for a traditional workplace.

With the advancement in latest technologies, we have to face several disadvantages out of the advantage of modern technology … Continue reading >>>

Michael Green by — March 23, 2015 in Metropolitan Area Networks

Campus NetworksThis document is intended for consumers and enterprise systems engineers who are developing or intend to construct an enterprise campus network and demand style most effective practice recommendations and configuration examples. In the previous, network designers had only a restricted number of hardware options—routers or hubs—when buying a technologies for their campus networks. A higher capacity, centralized server farm provides resources to the campus, and when combined with Cisco IOS, network management methods support QoS, security, troubleshooting, and other popular management attributes from finish to finish.

With the advent of such technologies as Layer 3 switching, LAN switching, and virtual LANs (VLANs), building campus networks is becoming extra complicated than in the past. Campus topologies with redundant network paths can converge more quickly than topologies that depend on redundant supervisors for convergence. All networks created with ConceptDraw PRO are vector graphic documents and are readily available for reviewing, modifying, and converting to a range of formats (image, HTML, PDF file, MS PowerPoint Presentation, Adobe Flash or MS Visio 2010, 2013).

The Cisco Catalyst 6500 and 4500 switches can help redundant supervisor engines and offer L2 Stateful Switchover (SSO), which ensures that the standby supervisor engine is synchronized from an L2 perspective and can quickly assume L2 forwarding responsibilities in the event of a supervisor failure. It contains the type of detail one requirements in study and in life with genuine networks.

This book is not only a reference book, but a nicely written, quick to read explanation of networking and troubleshooting. The sort of congestion that is additional prevalent in a campus network is known as transmit queue (TX-queue) starvation. As a Network Engineer I am usually tasked with designing and implementing network options in a complicated enterprise environment.

The constructing blocks of modular networks are quick to replicate, redesign, … Continue reading >>>

Michael Green by — March 17, 2015 in Campus Networks

InternetworksTo download InternetWorks from the Mac App Shop, you require a Mac with OS X 10.6.6 or later. To qualify for your official ALISON Diploma, Certificate or PDF you need to study and complete all modules and score 80% or far more in every single of the course assessments. Lots of browser now attempt to block this information and facts from leaking, and this was the motivation for the infamous EU Cookie Law” , but it can be difficult to fix this difficulty in its entirety with no breaking many net pages that rely on this behavior. You will most likely have to restart Windows as nicely.) Now enter an address into your net browser.

Third, his browser sends a request more than that connection utilizing the Hypertext Transfer Protocol, or HTTP But wait!”, I hear you cry, will not that connection attain the mail server that is running at ?”. RFC 896 Congestion Control in IP/TCP Internetworks 1/six/84 that connected our net with the ARPANET was saturated and little valuable site visitors could get by means of, due to the fact the gateway had more bandwidth to the ARPANET than to our net.

There are still some loose ends to tie up. 1st, you may have questioned how a single machine can be responsible for all of ‘s e-mail, and you would be entirely appropriate to do so. In practice, DNS will normally return many addresses when a specific domain name is looked up, and the internet browser basically chooses one particular of them at random.

Most likely so. The 21 Inc Computer system could be the precursor to the future innovations that will get grandma on the blockchain. Considering that Bob’s browser will generally incorporate the cookie it has for a unique domain name, if two internet web … Continue reading >>>

Michael Green by — March 10, 2015 in Internetworks