Network devices and their functions pdf files

These devices that filter traffic are called connectivity devices, and there are several different types. Wireless hart networks can be configured into a number of different topologies including the following. Different networking devices and hardware types hub. Hubs,bridges and switches are all devices used to connect computers and other devices together on an ethernet network. Servers tend to be more powerful than workstations, although configurations are guided by needs. Network devices hub, repeater, bridge, switch, router. Simple network management protocol snmp is the protocol governing network management and the monitoring of network devices and their functions. So, each computer would have to try again, after a. Osi model 7 layers explained pdf layers functions the open systems interconnection model osi model is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to their. Network topologies describe the ways in which the elements of a network are mapped. These inputoutput devices are also known as peripherals since they surround the cpu and memory of a computer system. The devices that operate at the network layer are routers and.

A network can be defined as a group of computers and other devices connected in some ways so as to be able to exchange data. Resources such as files, applications, printers and software are common. Describe the functionality of lan, man, and wan networks. These are the devices that play an important role in data transfer from. Snmp uses the user datagram protocol udp and is not necessarily limited to tcpip networks. Computer networking devices explained with function. General networking physical components and functions. Osi model 7 layers explained pdf layers functionsthe open systems interconnection model osi model is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to their underlying internal structure and technology. This tutorial explains types of network protocols and their functions in details. From nics to switches, modern networks are comprised of many devices. Bridge divides networks to reduce overall network traffic.

Network interface card nic in the list of the networking devices, nic stands on the first place. Describe the purpose and functions of various network devices. Cisco 200120 interconnecting cisco networking devices. There are many network devices which are being used these days to get connected to the internet. Allows a device to access the network to send and receive messages offers a physical address so a device s data can be sent on the network works with a device s networking software when sending and receiving messages provides errordetection capability. Networking and the osi model in this chapter, we begin our journey toward the ccna certification by examining some networking concepts key to working with cisco routers.

This is needed because lans and wans use different network protocols. Network protocols acronyms and abbreviations list of network protocols with abbreviations order by index. Also, you will learn about the most common types of protocols used by the network models while communicating one system with another. Networking hardware, also known as network equipment or computer networking devices, are electronic devices which are required for communication and interaction between devices on a computer network. Accelerated ccnax as your network grows, it needs to be broken into smaller networks or network segments to ensure better performance of the network.

Specifically, they mediate data transmission in a computer network. We are going to start, slowly but surely, building a theoretical network in our minds. In simple terms, input devices bring information into the computer and output devices bring information out of a computer system. Some of them are the switches, routers, firewall etc. Comparing and contrasting network devices, their features. With the advent of the tablet computer, and the touch screen devices such as ipad and iphone, our definition of workstation is quickly evolving to include those devices, because of their ability to interact with the network and utilize network services. A computer network is used to link users within defined parameters. Storage devices primary storage rom this memory is used as the computer begins to boot up. It forwards data signals in the same format in which it receives them. Solved multiple choice questions on computer networking. Basic home network and internet components, devices and. This tutorial explains the functions of the most common and the essential networking devices such as hub, switch, router, bridge, modem, nic, proxy and gateway in detail with examples.

A hub is the simplest in the family of network connecting devices. Network hardware can be classified by its location and role in the network. Cisco password recovery and device reset procedures. Repeater a repeater operates at the physical layer. Layer 2 of the osi model provides the following functions. Devices used to setup a local area network lan are the most common type of network devices used by the public.

Csca0101 computing basics 24 input devices keyboard shortcut keys. Networking hardware, also known as network equipment or computer networking devices, are. An input device is used to enter the data and instructions into the computer. Once the osi model is understood, it will be easier to design, use, and. Data communication and computer network 2 all devices connected together with a single device, creating starlike structure.

To connect lans, connecting devices are needed and various connecting devices are such as bridge, switch, router, hub, repeater. Small programs called firmware are often stored in rom chips on hardware devices like a bios chip, and they contain instructions the computer can use in performing some of the most basic operations required to operate hardware devices. For consultation and interpretation of components, devices and electrical and electronic circuit. Units which are the last receiver or generate data are called hosts, end systems or data terminal equipment. This is called a collision, and it would corrupt the data being transmitted by both computers. Most networks are smallthink of a small office or homeand even large networks are often divided into smaller segments. By convention, switching devices acting at the lan layer and. So when a host sends a data packet to a network hub, the hub copies the data packet to all of its ports connected to. Understanding these basic network protocols with functions will help you in managing network effectively. Networking devices michigan technological university. Its job is to regenerate the signal over the same network before the signal becomes too weak or corrupted so as to extend the length to which the signal can be transmitted over the same network. Modem translate analog to digital,reverses the action into the destination modem.

This is also known as network adapter card, ethernet card and lan card. Addresses are numeric quantities that are easy for computers to work with, but not for humans to remember. Also, output devices like printers, network storage will also be there, backup devices, so we do not have to back up locally on each machine. This list contains every command ever made available, which means not all the commands are going to work with your version of msdos or windows. Types of network protocols explained with functions. Types of network protocols and their uses in this chapter, you can find a detailed description of various useful protocols and their types. Network devices are components used to connect computers or other electronic devices together so that they can share files or resources like printers or fax machines. Network topologies functions of networking icnd1 100105. Not efficient for binary file transfers outofband binary channels are often used with xmpp. A switch forwards data to its destination by using the mac address embedded in each packet. Describe the purpose and function of network cards. Modems connect you with your internet isp internet service provider. To complete our examination of networking on a physical level, this chapter looks at the network devices that are used to create networks.

Comparing and contrasting network devices, their features and functions. Device function purpose key points hub connects devices on a twistedpair network. Learn how the most common types of network protocols works in computer network. Usually the server is a higher than average file and print server cd. Introduction to networking devices subodh mca institute. Pdf networking is referred as connecting computers electronically for the. Administration from an administrators point of view, a network can be private network which. How to configure cisco 1200 and 1242 series access points. Network hub is a networking device which is used to connect multiple network hosts. In a wireless network, an access point has a similar function to the hub in. Bridge hub switch router heres what these connectivity devices, working together, are primarily responsible for. Identify the purpose, features, and functions of the following network components. Usually, computers will be joined via cables and other electronic gadgets, such as modems.

Most of the windows cmd commands are used to automate tasks via scripts and batch files, perform advanced administrative functions, and troubleshoot and solve certain kinds of windows issues. Hubs are effectively multi port repeaters and operate at the physical layer level. Hubs are effectively multi port repeaters and operate at the physical layer level one. Nic allows a networking device to communicate with the other networking device. The most important concept is a discussion of the osi model and how data flows across a network. Network devices hub, repeater, bridge, switch, router, gateways and brouter 1. Which of the following tcpip protocols is used for transferring files form one machine to another. As its important for it pros to know a router from a gateway, i put together a quick pop quiz on basic network devices. By forwarding data only to the connection that should receive it, the switch can improve network performance in two ways. All networking devices require a modem to talk through a telephone line such as email service to the isp.

So far this book has examined topologies, media access methods, networking standards, and cable types and connectors. First, by creating a direct path between two devices and controlling their communication, it can great ly reduce the number of collisions on the network. So, we can have cameras connected to the network as input devices and share that camera across multiple users. Describe the function and operation of layer 2 switching. The data is transferred in terms of packets on a computer network. All devices connected arbitrarily using all previous ways to connect each other, resulting in a hybrid structure. In order to do this, we are going to start from the beginning. So here is the az list of windows cmd commands to perform desired tasks which you normally do by using the gui.

Introduction lans do not normally operate in isolation but they are connected to one another or to the internet. A group of network protocols that work together at higher and lower levels is often called a protocol family. We can also categorize applications based on their. Each of the devices on the network can be thought of as a node. A hub does not perform any tasks besides signal regeneration. Protocol encapsulation chart a pdf file illustrating the relationship between common protocols and the osi reference model. Students of networking traditionally learn about the osi model that conceptually organizes network protocol families into specific layers for teaching purposes. One should know about all of them to get some good insights about the network devices. That smaller segment is set apart from the larger network by a device that can filter data and help the network be more efficient. Inputoutput devices are required for users to communicate with the computer. Networking components and devices introduction pearson. When you sit down to get something done on your computer, you may not realize it but youre relying on more than your internet browser to get information, go shopping or send emails. A hub connects two or more computers together like switch in diagram above. If two computers talked at the same time, their traffic would get combined as it was echoed out the other interfaces.