A networking patch cable is the most common cable type in any network. Candidates should have some handson experience with windows server, windowsbased networking, network management tools, dns, tcpip, names resolution process, and network protocols and topologies. Introduction to wireless networks when you invent a new network. Some software allows users to save as one or more different file types. This form of computer network data service requires large bandwidth and can slow a computer network with many users down considerably. The network structure includes the wireless network interface adapters and base stations that send and receive the radio signals. It can work with many operating systems, and functionality may be upgradeable through rom. Types of bridges three types of bridges are used in networks. Notes on computer networks pdf 93p by bob dickerson file type. In the list of the networking devices, nic stands on the first place. Computer networking devices explained with function. Coax, twisted pair, and fiber optic types of patch cables exist.
We examine the edge of a computer network, looking at the end systems and applications, and at the transport service provided to applications running of the end systems. Osi model in easiest way in hindiurdubhupinder rajput. Some of the common types include halfduplex modem, fullduplex modem, 2wire modem, 4wire modem, synchronous and asynchronous. Originally pdf was mostly used by graphic artists, designers and publishers for producing color page proofs. Computers use modems to communicate with one another over a network. Basic of networking a computer network consists of a collection of computers, printers and other. Introduction modern networks have more than the physical and the data link layers.
A network consists of 2 or a lot of computers that are coupled so as to share resources such as cds and printers, exchange files, or enable electronic communications. Network types and topolgies chapter 3 3 n etwork r elationships 41 servers are pcs that control access to different resources on the network. It connects two or more computers that are apart but resides in the same or different cities. This device assists computer in transferring data and information over telephone lines. This is a modem separated from the system unit in the computer case. Types of area networks lan, man and wan geeksforgeeks. Data representation data representation is defined as the methods used to represent information in computers. Examples include connecting a computer to a router or connecting a cable modem to an xbox. An introduction 5 rather, the road transportation network is a better. The computers on a network are also coupled through cables, telephone lines, radio waves, satellites, or. Transparent bridgederives its name from the fact that the devices on the network are unaware of its existence. In a home network, this can be such things as printers, a central storage drive, mp3 files, and anything you can think of that can take advantage of the servers capabilities. All of the above 12 what is a firewall in computer.
Connect a printer, scanner, or a fax machine to one. Today, a modem is most often used to describe a broadband modem. Introduction to networking advantages of networking types of networks models of networking appropriate to students ncte recommendation to students some relevant terms. A modem, short for modulatordemodulator, converts digital signals into modulated analog signals to carry them over certain kinds of media like copper telephone lines or cable networks. A personal area network pan is a computer network used for communication among computer devices, including telephones and personal digital assistants, in proximity to an individuals body. Convert means to change data from one format to another. It covers a large geographical area and may serve as an isp internet service provider. For example, you may want to convert microsoft word documents to pdf. A computer network is a system in which multiple computers are connected to each other to share information and resources. A transparent bridge does nothing except block or forward data based on the mac address. Dear reader, if you are looking for important multiple choice questions with answer from computer network, then you are in right place. A pdf file can be shared, viewed, and printed by anyone using the free adobe reader software regardless of the operating system, original design application or fonts. When compression is enabled, the modem can receive data from an attached dte at 115.
A modem converts data to a signal so it can be easily sent and received over a phone line, cable, or satellite connection. Computer networking and management lesson 1 computer networks. Networking fundamentals audience description candidates for this exam are familiar with general networking concepts and the technologies. Computer networks a group of two or more computer systems linked together. At the destination, the receiving modem demodulates the frequencies back into digital data. Some networking professionals use the term patch cable to refer to any kind of straightthrough network cable used for a temporary purpose. Computer network, two or more computers that are connected with one another for the purpose of communicating data electronically. Nov 23, 20 at the destination, the receiving modem demodulates the frequencies back into digital data.
Different types of modems different types of modems. Introduction to computer network complete guide to. This is also known as network adapter card, ethernet card and lan card. An external modem connects to a serial port on the pc or ti and requires the use of a connecting cable between the pc or ti and modem, a power connection. For transmission over an analog telephone linewhich was once the most popular way to access the internetthe modem converts data between analog and digital formats in real time for twoway network communication. Mar 03, 2019 short question answer from computer network mcq on computer network.
Man or metropolitan area network covers a larger area than that of a lan and smaller area as compared to wan. Create files and store them in one computer, access those files from the other computer s connected over the network. This type of modem provides the best power and performance, and it does not utilize the pcs processing power. However, the uart built into the serial port of the pc have to support this data rate. We love to share such educational stuffs with you for your upcoming competitive exams like banking, ibps, ssc, cgl, upsc, ias railway. Networking refers to the total process of creating and using computer networks, with respect to hardware, protocols and software, including wired and wireless technology. Mcq computer network gk objective question answers pdf. Networking interview pdf download basic networking interview question answer pdf download. Peer to peer workgroups the computers are connected by a network, however, there is not a server present. A modem or broadband modem is a hardware device that connects a computer or router to a broadband network. Hope you have liked the above questions like us on facebook for daily updates. Two basic network types are localarea networks lans and widearea networks wans. A personal area network, or pan, is a computer network organized around an individual person within a single building. Patch cables are used to connect any two different network devices.
Generally, networks are made up of two types of cables. A modem is a network device that both modulates and demodulates analog carrier signals called sine waves for encoding and decoding digital information for processing. Pointtopoint a pointtopoint connection provides a dedicated link between two devices. All about adobe pdf file format webopedia reference. All three components mcu, dpu, and daa are in the modem itself. Specific utilities can also be used to convert from one file format to another. The remaining h bytes h 3,2,1 are used for the host machine. Nov 11, 2019 some networking professionals use the term patch cable to refer to any kind of straightthrough network cable used for a temporary purpose. However, can also be used to describe what was initially considered a modem described. Pdf file link for networking question and answer for interview will be made available on the request. The rj45registered jack connectors are the plugin devices used in the networking and telecommunications applications. Categorization is usually based on the following basic modem features. There are two types of modems, namely, internal modem and external modem.
Network devices hub, repeater, bridge, switch, router. Chapter 15 networking concepts ii puc, mdrpuc, hassan 6 p a g e keerthi kumar h m ftp protocol. In computers reference the same definition holds value but there is a slight change which is. On an external modem it is helpful that the modem be connected to a 16550a uart serial port to be assured of the maximum data throughput and of course, an available serial port is necessary. A modem modulates outgoing digital signals from a computer or other digital device to analog signals for a conventional copper twisted pair telephone line and demodulates the incoming analog signal and converts it to a digital signal for the digital device. A computer network is a system in which multiple computers are connected to each other to share information and resources characteristics of a computer network. Although the name modem is seldom used in this case, modems are also used for highspeed home networking applications, especially those using existing home wiring. Types of modems modems can be of several types and they can be categorized in a number of ways. A hardware modem is a controllerbased modem, and it does all of the work.
Some modems offer dual ethernet and usb connection. Clientserver the computers are connected by a network, and there is a server present. A modem modulates one or more carrier wave signals to encode digital information for transmission and demodulates signals to decode the transmitted. These cables share the same physical characteristics as other types of network cables except that patch cables tend to be a shorter length. Local isps are in turn connected to regional isps, which are in turn connected to national and international isps. Computer networking and management lesson 1 computer. In terms of the osi reference model, the radio signal operates at the physical layer, and the data format controls several of the higher layers. Chapter 1 introduction using the internet seems pretty easy. Introduction to network cables and network cable types. The entire capacity of the link is reserved for transmission between those two devices. All of the above 12 what is a firewall in computer network. For example, a cable modem and dsl modem are two examples of these types of modems. Nic converts the data packets between two different data transmission.
A modem modulator demodulator is an electronic device that enables a computer to transmit data over telephone lines. Nic allows a networking device to communicate with the other networking device. If we imagine a group of 100 friends wanting to go to a game, then we can easily see that not all can. File servers with a file server, the computer network client passes requests for computer network files or file records over a computer network to the file server. Some of the common types include halfduplex modem, fullduplex modem, 2wire modem, 4wire modem, synchronous and asynchronous modems. Before discussing lan wan and man, let us know about the network network. The devices may or may not belong to the person in question. Most pointtopoint connections use an actual length of wire or cable to connect the two ends, but other options, such. Man is designed for customers who need a highspeed. Modems are electronic devices which convert digital information of computers into analog signals and are also capable of again converting the analog signals to the digital information at the receiving end. In networking, a modem allows inherently nondigital pathways. Multiple choice questions of computer networking 11 computer network is a. Modems accomplish both of these tasks simultaneously and, for this reason, the term modem is a combination of modulate and demodulate.
A modem a portmanteau of modulatordemodulator is a hardware device that converts data into a format suitable for a transmission medium so that it can be transmitted from one computer to another historically along telephone wires. Introduction to computer network the term network means a group, chain or a collection of something that come together for the purpose of communication. The network layer is a set of mechanisms that can be used to send packets from one computer to another in the world. We love to share such educational stuffs with you for your upcoming competitive exams like banking, ibps, ssc, cgl, upsc, ias railway defence etc. Create files and store them in one computer, access those files from the other computers connected over the network. It involves the application of theories from different technological fields, like it, computer science and. Ethernet modems that plug into the network card in the computer, and wireless modems that connect to a computer using a wireless lan wlan. It involves the application of theories from different technological fields, like it, computer science and computerelectrical engineering.