History of grid computing: technological advances in the field of computer networks began in 1969. Meanwhile, decided the Advanced Research Projects Agency (ARPA) to implement a project called Advanced Research Projects Agency Network (ARPANET). This was the first network in the world, which included only four nodes. Since then, networks of computers has come a long way. Learn more about what is ARPANET?
Introduction to Computer Networking: What is a computer network? It is literally a computer network. Each computer on the network is half of the transfer, such as Ethernet cabling. There are many different types of networks, such as a LAN, MAN or WAN. There are also many types of network topologies (also known as the basic structure). A LAN (Local Area Network) is generally composed of a small number of computers (hundreds or less). The computer network of any single facility or building a local network. Metropolitan Area Network (MAN) is a network of many LANs. For example, a multinational, many buildings in the same area. Each building is individually LAN. It would be very important, a network between them. This man will come into play, a city like New York or Chicago, definitely too many people. By connecting all these networks, you get a WAN (Wide Area Network). There are also Ethernet protocols (TCP / IP, the communication is done via a computer network.) Implemented if all the above questions, then you have a functioning network.
Designing a simple computer network: If a novice priority on a computer-aided design system, select the appropriate design which must be given starts. There are five types of computer network design standard. These designs are also known as network topologies. Depending on the number of devices that have the network, we must choose the appropriate topology. There are five types of network topologies. Sun, star, ring, mesh, tree and bus. In the star topology, all nodes are connected to a single node. In the ring topology, each node with two nodes that form a circle. In mesh topology, each node is connected to all other nodes. In the tree topology, there is a root node (node or super), in which two or more nodes are connected, and the remaining terminals are connected in a hierarchy. In a bus topology, there is a common means, like a backbone, and the terminals are connected.
Transmission media: the physical channel between the transmitter and receiver streaming media. There are two different types of media, limited or unlimited. The media are limited in which media communication is via the cable. The media are part of an unlimited number of wireless communications. Learn more about the computer network cable, and press tools unit.
Types Streaming Media Limited
There are seven layers of OSI reference model, and each layer has a defined role: • Application Layer: This layer provides distributed information services. • Presentation layer: Provides independence of the implementation process. • Session layer: Provides a control structure for communication between applications. • The transport layer provides reliable transmission of data between endpoints. • Network layer: Provides independence to the upper layers of the lower • The data link layer: Provides reliable transfer of information through a physical connection. • Physical Layer: handles the transmission of unstructured bit stream. There are only four layers of the TCP / IP reference model: • Application Layer: Includes all processes and services, the transport layer used to provide data. • Transport Layer: Provides support for TCP or UDP. • Internet Layer: Addresses communication from machine to machine. • Organize network: Responsible for receiving and transmitting IP datagrams. The fundamental difference between the OSI Reference Model and TCP / IP reference model was made, the TCI / IP to the advent of the Internet. The OSI Reference Model and TCP / IP are similar in many respects. To learn more about how working TCP / IP?
The implementation of a team of network design: During the implementation of a computer network, two types of technologies that have to think - Client / server and peer-to-peer. In my opinion, point to point technology avoided, because the client / server technology to better support future growth. Most computer networks linking existing networks, and it is very difficult to change, and if you really think about the future compatibility, it is superior to wireless architecture are given, which can easily evolve to a number of teams without much degradation of performance and cost. Learn how to configure a server?
Wireless networks: A wireless network is a network that uses media, without limited transfer across the network, ie a wireless computer network cabling. Some examples of wireless computer networks, WPAN (Wireless Personal Area Network), WMAN (Wireless Metropolitan Area Network), WLAN (Wireless Wide Area Network). Also on the Web from mobile devices a part of wireless networks is considered.
Computer Network Security: Network security is an important issue for all software vendors. When a computer network is the transmission of confidential information, it must ensure the security of sensitive information. computer security network is a big problem, and the vast majority of research has been done in this area. The following questions in the apparatus of the network security field. • Security attacks: They are to block attacks, information security. • Security mechanisms: methods of prevention against attacks. • Types of computer security: These are the services associated with managing the safety of the device. You can classify as follows: ◦ Privacy ◦ authentication ◦ Integrity ◦ Non-repudiation Access Control ◦ ◦ Availability All these questions apply to computer security for the wireless network.
Troubleshooting a computer network: Check all cable connections, even before the start to locate the source of the problem. Bad connection is the most common cause of problems with the network. cable connections and the problem persists, check the hardware. If you find that the equipment is working properly and verify a software malfunction. By answering these basic controls must be able to identify the problem and then with the solution. Learn how to secure the wireless network and hardware troubleshooting.
Network Certifications: Certification courses are different certifications available for computer networks are as follows. • Cisco ◦ Cisco Certified Network Associate (CCNA) ◦ Cisco Network Certified Professional (CCNP) Cisco Certified Internetwork Expert ◦ (CCIE) Cisco Certified Voice Professional ◦ (CCVP) • Novell CNE • Red Hat Certified Engineer (RHCE) • Microsoft Certified Systems Engineer (MCSE) • Professional Certified Information Security (CISSP) Network equipment Grade: title, you can get in the field of computer networks are associate degrees in computer networks, the degree in computer systems and networks and online publications. Once you have the basic qualifications, you can go for a Master of Science in computer networks.
Job Network equipment: If you get a diploma or a certified professional can have, then there are many jobs in computer networks are used as a network administrator, network engineer, network engineer or network analyst. A network administrator working description includes the operation of the network of an institution. Network technical description of work includes the construction and maintenance. A network engineer is responsible for high-level tasks such as creating, designing and maintaining the network. The network engineer and network administrator to perform similar tasks, but are different in that the engineer is concerned with more complex tasks that the administrator can not handle (problems with the network architecture, etc.) Information Network is an analyst working for the analysis of different situations on the net predicts the outcome and proposes several solutions. It is primarily responsible for various events in the network and determine if the problem is normal or malicious in nature.
computer network is an area that covers all aspects of computing (hardware, software and security). There is a huge growth in the IT industry, it seems that the future of computer networks very bright. We hope that the computer network of computer tutorial for beginners information that the emphasis on this aspect of network drives.
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