From Juniper’s JunosphereLab to OPNET, there are many tools available for network designers to take advantage of when constructing a network. Some network design tools require you to pay in order to gain access to their developmental tools. However, there are a lot of free network design tools available on the internet; a simple google search will yield many results. Gliffy and MaSSHandra are two network design tools. Gliffy is unique in that you work and save your design diagrams on the cloud. MaSSHandra differs in that you can work on a 3-D diagram canvas thus allowing you to take into account the space of servers and other devices.
Gliffy’s network diagrams allow you to understand how a network is to operate. You can create basic diagrams, but if you want to unlock the real scope of the tool you will have to pay: “$4.95/month fee for 200 diagrams, 200 MB of storage, public and private diagrams, and unlimited collaborators”(Wallen). This is relatively the same payment model free network design tools use in that you receive free access but the tools are so limited that you have to ...
Kayla (a psuedonym) is a recent graduate of University of California Santa Barbara with a bachelor’s degree in Global Studies and History. She is 23 years old and is currently living with both of her parents and half-sister in Glendale, CA. She migrated from Peru at the age of thirteen in 2005 with her mother and half sister. She states that her father was already living in the United States for 13 years when they were able to migrate. She explains that the reason behind her father’s move was due to the lack of job opportunities in Peru.
The internet was created to test new networking technologies developed to eventually aid the military. The Arpanet, advanced research projects agency network, became operational in 1968 after it was conceived by Leanard Roberts (Watrall, T101, 2/2). Ever since the Arpanet began in 1968, it grew exponentially in the number of connected users. Traffic and host population became too big for the network to maintain, due to the killer application known as email created in 1972. The outcry for a better way sparked the development of the NSFNet. The National Science Foundation Network replaced Arpanet, and ultimately had many positive effects. This early division of the internet spread its netw...
An Open Shortest Path First (OSPF) protocol is the most used interior gateway protocol and computation intensive protocol where energy consumption in Internet Protocol (IP) networks is the main concern. The energy in an IP network can be saved by allowing a subset of IP router interfaces on sleep mode setting during the low traffic hours through the model of “move” by dint of an Energy Aware Routing (EAR) strategy, which is completely compatible with OSPF and is based on the “Shortest Path Tree (SPT) exportation” techinque or “Dijkstra's Algorithm”. In case of heavy traffic hours, the EAR strategy is not usable and may cause denial of service. The strategy implemented can help a network operator to control the network performance and allow a smoothed QoS degradation. This performance evaluation study permits to save about 30% of network links with a insignificant rise of link loads and network path lengths.
Building a star topology is much more expensive and time consuming than the bus network. The increased costs come in the form of cabling and the central device(s). However, star topologies can be easily expanded to accommodate more nodes and troubleshooting is much easier because connectivity problems are simpler to isolate than a bus network.
Networks are designed in a number of ways, based on the geographical area, the technology used, user group specific, application based etc. But we can roughly categorize the communication networks in 2 broad categories, based on transmission: Connection-Oriented and Connectionless.
The Internet consists of a three level hierarchy composed of backbone networks (e.g. ARPAnet, NSFNet, MILNET), mid-level networks, and stub networks. These include commercial (.com or .co), university (.ac or .edu) and other research networks (.org, .net) and military (.mil) networks and span many different physical networks around the world with various protocols, chiefly the Internet Protocol.
...vantage of the overall network design and implement usable subnets with virtual local area networks. Use encryption and encapsulation to secure communications of public segments to enable extranets and cross-Internet company traffic. Use items such as intrusion detection systems and firewalls to keep unauthorized users out and monitor activity. Taken together, these pieces can make a secure network that is efficient, manageable, and effective.
To Begin to understand Social Network theory more deeply, it is important to understand some of the key concepts of the theory. One of the main concepts of this theory is identifying what a network means. A network can be defined as a set of relationships (Dunn, 1983). The simplest kind of network contains two objects, such as two people, and a relationship that links them together. For example, two people that know each other would ...
Networks in organisation are dynamic and complex entities which can be quite challenging to configure and manage. (Kim & Feamster 2013). These corporate networks consist of multiple routers, switches, firewalls, middleboxes and a particular advantage of network management is the ability to monitor the entire business network. As all the devices are interconnected with many event occurring simultaneously, problems with once device can eventually lead and spread throughout...
The Internet has revolutionized the computer and communications world like nothing before. The Internet enables communication and transmission of data between computers at different locations. The Internet is a computer application that connects tens of thousands of interconnected computer networks that include 1.7 million host computers around the world. The basis of connecting all these computers together is by the use of ordinary telephone wires. Users are then directly joined to other computer users at there own will for a small connection fee per month. The connection conveniently includes unlimited access to over a million web sites twenty-four hours a day, seven days a week. There are many reasons why the Internet is important these reasons include: The net adapts to damage and error, data travels at 2/3 the speed of light on copper and fiber, the internet provides the same functionality to everyone, the net is the fastest growing technology ever, the net promotes freedom of speech, the net is digital, and can correct errors. Connecting to the Internet cost the taxpayer little or nothing, since each node was independent, and had to handle its own financing and its own technical requirements.
The network management plan and security plan is important to help the company figure out how they will improve its network and security procedures for the company. Planning involves outlining objectiv...
Network Solutions, Inc. is a worldwide leader in hardware, software, and services essential to computer networking (Aguinis, 2013, p.31). In the past, this company has used over 50 different systems to measure performance management. Even with the large amounts of different systems to measure performance, only a fraction of employees were receiving performance reviews, and less than 5% of employees received the lowest category of ratings. Also, the organization had no recognition program for employees with a higher category of ratings. In addition to the lack of employees not receiving reviews, it was noticed in the organization that performance problems were not being addressed or resolved.
TCP/IP is a network model which enables the communication across the Internet. The most fundamental protocol on which the Internet is built. This is made up of the 2 common networking protocols, TCP, for Transmission Control Protocol, and IP, for Internet Protocol. TCP maintains and handles packet flow linking the systems and IP protocol has the ability to handle the routing of packets. However The TCP/IP stack consists of 5 layers first being application layer, the transport layer, then the network layer, the link layer and finally the physical layer. The assignment focuses on the three middle layers and is divided into five parts. Firstly explaining how the TCP and UDP the most vital protocols needed to deliver and communicate.
There are several advantages to the layered approach provided by the OSI model. With the design separated into smaller logical pieces, network design problems can be easier to solve through divide and conquer techniques. Vendors who follow the model will produce equipment that is much more likely to be compatible with equipment from other vendors. The OSI model also provides for more extensible network designs. New protocols and other network services are more easier added to a layered architect.
At VRSEC I had the good fortune of having a well-compiled syllabus, which placed equal emphasis on theoretical fundamentals as well as practical applications. Subjects such as Computer organization, Digital Logic Design, Microprocessor Applications laid a solid foundation in the theoretical aspects of the subjects. Practical application aspects were introduced to me through subjects such as Object Oriented Programming concepts, Data Structures, Relational Database Management Systems, Internet technologies. The areas, which are of special interest to me centered on Computer communications, Software Engineering, E-Commerce applications. I am interested in learning more about encryption and artificial intelligence. My interest in Networks began when I read about the various application fields it could be used, in the Information Technology magazine. I am a regular reader of magazines such as IE...