Computer Networking http://mail.ecomputernotes.com/computernetworkingnotes 2018-10-23T20:00:33+00:00 Joomla! - Open Source Content Management Modem: What is a Modem? Types of Modems 2013-01-24T10:33:59+00:00 2013-01-24T10:33:59+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/explain-about-modem Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong><span style="color: black;">Modem is abbreviation for Modulator – Demodulator.</span> </strong><span style="color: black;"> Modems are used for data transfer from one computer network to another computer network through telephone lines. The computer network works in digital mode, while analog technology is used for carrying massages across phone lines. </span></span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong><span style="color: black;">Modem is abbreviation for Modulator – Demodulator.</span> </strong><span style="color: black;"> Modems are used for data transfer from one computer network to another computer network through telephone lines. The computer network works in digital mode, while analog technology is used for carrying massages across phone lines. </span></span></p> </div> What is Switching 2013-01-24T10:42:25+00:00 2013-01-24T10:42:25+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/what-is-switching Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><strong>Switching</strong> is the most valuable asset of computer networking. Every time in computer network you access the internet or another computer network outside your immediate location, or your messages are sent through a maze of transmission media and connection devices. The mechanism for exchange of information between different computer networks and network segments is called switching in Networking. On the other words we can say that any type signal or data element directing or Switching toward a particular hardware address or hardware pieces.</span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><strong>Switching</strong> is the most valuable asset of computer networking. Every time in computer network you access the internet or another computer network outside your immediate location, or your messages are sent through a maze of transmission media and connection devices. The mechanism for exchange of information between different computer networks and network segments is called switching in Networking. On the other words we can say that any type signal or data element directing or Switching toward a particular hardware address or hardware pieces.</span></p> </div> What is a computer network? Advantages of Network . 2013-01-24T09:49:45+00:00 2013-01-24T09:49:45+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/what-is-a-computer-network-advantages-of-network-explain-network-services Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; color: #000000; font-size: 12pt;">A computer network consists of two or more computers that are linked in order to share resources such as printers and CD-ROMs, exchange files, or allow electronic communications. The computers on a computer network may be linked through cables, telephone lines, radio waves, satellites, or infrared light beams.</span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; color: #000000; font-size: 12pt;">A computer network consists of two or more computers that are linked in order to share resources such as printers and CD-ROMs, exchange files, or allow electronic communications. The computers on a computer network may be linked through cables, telephone lines, radio waves, satellites, or infrared light beams.</span></p> </div> what is network? Types of Network 2013-01-24T09:27:20+00:00 2013-01-24T09:27:20+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/how-many-type-of-computer-networking Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong>Computer Networks</strong> fall into three classes regarding the size, distance and the structure namely: LAN (Local Area Network), MAN (Metropolitan Area Network), WAN (Wide Area Network). Before we discussing about type of network we can discuss about what is a network.</span></p> <h2 style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">What is Network?</span></h2> <p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">In the today world, <span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Two devices are in network if a process in one device is able to exchange information with a process in another device.</span> Networks are known as a medium of connections between nodes (set of devices) or computers. A network is consist of group of computer systems, servers, networking devices are linked together to share resources, including a printer or a file server. The connections is established by using either cable media or wireless media. <br /></span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong>Computer Networks</strong> fall into three classes regarding the size, distance and the structure namely: LAN (Local Area Network), MAN (Metropolitan Area Network), WAN (Wide Area Network). Before we discussing about type of network we can discuss about what is a network.</span></p> <h2 style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">What is Network?</span></h2> <p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">In the today world, <span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Two devices are in network if a process in one device is able to exchange information with a process in another device.</span> Networks are known as a medium of connections between nodes (set of devices) or computers. A network is consist of group of computer systems, servers, networking devices are linked together to share resources, including a printer or a file server. The connections is established by using either cable media or wireless media. <br /></span></p> </div> What is a Computer Network? Uses of Computer Networks. 2013-01-24T09:00:08+00:00 2013-01-24T09:00:08+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/what-is-a-computer-network Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">During 20th century the most important technology has been the information gathering, its processing and distribution. The computers and communications have been merged together and their merger has had a profound effect on the manner in which computer systems are organized. </span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">During 20th century the most important technology has been the information gathering, its processing and distribution. The computers and communications have been merged together and their merger has had a profound effect on the manner in which computer systems are organized. </span></p> </div> Network Connection Types 2013-01-24T09:54:07+00:00 2013-01-24T09:54:07+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/what-are-the-two-network-connection-types Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">There are different types of&nbsp;<span class="st">communications connection</span> in existence between two <span class="st">endpoints.</span>, Home networks, and the Internet is the one of the most commonly used examples. Many type of devices are and several different methods are used connecting to these type of network architectures.</span></p> <p style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">There are different advantages and disadvantages to this type of network architectures. Connecting computers to a these type of networks, we requires some networking framework to create the connections. The two different computer network connection types are getting discussed in this page are Point-to-Point Connection and multipoint connection. The main difference between them we can getting discussed with the help of below definition.<br /></span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">There are different types of&nbsp;<span class="st">communications connection</span> in existence between two <span class="st">endpoints.</span>, Home networks, and the Internet is the one of the most commonly used examples. Many type of devices are and several different methods are used connecting to these type of network architectures.</span></p> <p style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">There are different advantages and disadvantages to this type of network architectures. Connecting computers to a these type of networks, we requires some networking framework to create the connections. The two different computer network connection types are getting discussed in this page are Point-to-Point Connection and multipoint connection. The main difference between them we can getting discussed with the help of below definition.<br /></span></p> </div> What is protocol? and its types - Definition 2013-07-05T09:36:57+00:00 2013-07-05T09:36:57+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/protocol Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong>Protocol Definition:</strong> It is a digital language through which we communicate with others on the Internet. <strong>protocol meaning is that it a</strong> <strong>set of mutually accepted and implemented rules</strong> <strong>at both ends of the communications channel for the proper exchange of information</strong>. By adopting these rules, two devices can communicate with each other and can interchange information. We can't even think of using the Internet without Protocols. Each <em>protocol</em> is defined in different terms and different use with unique name. Message travel from sender to reciever via a medium (The medium is the physical path over which a message travels) using a protocol.</span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong>Protocol Definition:</strong> It is a digital language through which we communicate with others on the Internet. <strong>protocol meaning is that it a</strong> <strong>set of mutually accepted and implemented rules</strong> <strong>at both ends of the communications channel for the proper exchange of information</strong>. By adopting these rules, two devices can communicate with each other and can interchange information. We can't even think of using the Internet without Protocols. Each <em>protocol</em> is defined in different terms and different use with unique name. Message travel from sender to reciever via a medium (The medium is the physical path over which a message travels) using a protocol.</span></p> </div> What is IEEE 802.4 Protocol? Token Bus 2013-01-24T10:17:06+00:00 2013-01-24T10:17:06+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/what-is-ieee-8024-protocol Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; color: #000000; font-size: 12pt;"><strong>IEEE 802.4 Token Bus : </strong>In token bus Computer network station must have possession of a token before it can transmit on the computer network. The IEEE 802.4 Committee has defined <strong>token bus</strong> standards as broadband computer networks, as opposed to Ethernet's baseband transmission technique. Physically, the token bus is a linear or tree-shape cable to which the stations are attached.<br /></span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; color: #000000; font-size: 12pt;"><strong>IEEE 802.4 Token Bus : </strong>In token bus Computer network station must have possession of a token before it can transmit on the computer network. The IEEE 802.4 Committee has defined <strong>token bus</strong> standards as broadband computer networks, as opposed to Ethernet's baseband transmission technique. Physically, the token bus is a linear or tree-shape cable to which the stations are attached.<br /></span></p> </div> What is Network Topology? or Network Topologies 2013-01-24T10:05:04+00:00 2013-01-24T10:05:04+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/what-is-lan-topologies-explain-each-topology Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">The term Network <strong>Topology</strong> defines the <strong><span style="color: black;">geographic&nbsp;Physical or logical arrangement of computer networking devices</span> </strong>. The term <strong>Topology </strong>refers to the way in which the various nodes or computers of a network are linked together. It describes the actual layout of the computer network hardware. Two or more devices connect to a link; two or more links form a topology. Topology determines the data paths that may be used between any pair of devices of the network.</span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">The term Network <strong>Topology</strong> defines the <strong><span style="color: black;">geographic&nbsp;Physical or logical arrangement of computer networking devices</span> </strong>. The term <strong>Topology </strong>refers to the way in which the various nodes or computers of a network are linked together. It describes the actual layout of the computer network hardware. Two or more devices connect to a link; two or more links form a topology. Topology determines the data paths that may be used between any pair of devices of the network.</span></p> </div> Types of Servers 2013-01-24T09:07:39+00:00 2013-01-24T09:07:39+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/what-are-the-different-types-of-servers Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p class="Default" style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">There are many type of Serves in the Computer Networking World. Server is a machine, that can be design for interconnecting the machines with each other.Many type of the functions are performed by the servers to facilitate different uses. Let us discussed first, what is a server before getting discuss about type of servers.</span></p> </div> <div class="feed-description"><p class="Default" style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">There are many type of Serves in the Computer Networking World. Server is a machine, that can be design for interconnecting the machines with each other.Many type of the functions are performed by the servers to facilitate different uses. Let us discussed first, what is a server before getting discuss about type of servers.</span></p> </div> What is Internetworking 2013-01-24T09:13:47+00:00 2013-01-24T09:13:47+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/what-is-internetworking Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000;"><strong>Internetworking</strong> started as a way to connect disparate types of computer networking technology. Computer network term is used to describe two or more computers that are linked to each other. When two or more computer&nbsp;LANs or WANs or computer network segments are connected using devices such as a <em>router</em> and configure by logical addressing scheme with a protocol such as IP, then it is called as<strong> computer internetworking</strong>. </span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000;"><strong>Internetworking</strong> started as a way to connect disparate types of computer networking technology. Computer network term is used to describe two or more computers that are linked to each other. When two or more computer&nbsp;LANs or WANs or computer network segments are connected using devices such as a <em>router</em> and configure by logical addressing scheme with a protocol such as IP, then it is called as<strong> computer internetworking</strong>. </span></p> </div> What is IEEE 802.3 Protocol 2013-01-24T10:13:46+00:00 2013-01-24T10:13:46+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/what-is-ieee-8023-protocol Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif; color: #000000;"><strong>Ethernet : IEEE 802.3 Local Area Network (LAN) Protocols : </strong>Ethernet protocols refer to the family of local-area network (LAN) technology covered by the I<strong>EEE 802.3</strong>. It is working examplc of the more general carrier sense multiple access with collision detect (CSMA/CD). In the Ethernet Computer Network standard, there are two modes of operation: <strong>half-duplex and full-duplex modes</strong>. In the half duplex mode, data are transmitted using the popular Carrier-SenseMultiple Access/Collision Detection (CSMA/CD) protocol on as hared medium. </span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif; color: #000000;"><strong>Ethernet : IEEE 802.3 Local Area Network (LAN) Protocols : </strong>Ethernet protocols refer to the family of local-area network (LAN) technology covered by the I<strong>EEE 802.3</strong>. It is working examplc of the more general carrier sense multiple access with collision detect (CSMA/CD). In the Ethernet Computer Network standard, there are two modes of operation: <strong>half-duplex and full-duplex modes</strong>. In the half duplex mode, data are transmitted using the popular Carrier-SenseMultiple Access/Collision Detection (CSMA/CD) protocol on as hared medium. </span></p> </div> What is LAN (Local Area Network) | Definition of LAN 2013-05-06T10:07:42+00:00 2013-05-06T10:07:42+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/local-area-network Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong>what is lan:</strong> It actually stands for <em>local area network</em>. A <i>network </i>is a group of computers and other devices connected together so they can pass information back and forth. <span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">The local area network (LAN) is a network which is designed to operate over a small physical area such as an office, factory or a group of buildings. LANs are very widely used in a variety of applications.</span></span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong>what is lan:</strong> It actually stands for <em>local area network</em>. A <i>network </i>is a group of computers and other devices connected together so they can pass information back and forth. <span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">The local area network (LAN) is a network which is designed to operate over a small physical area such as an office, factory or a group of buildings. LANs are very widely used in a variety of applications.</span></span></p> </div> What is Router | Definition of Router 2013-01-24T10:46:05+00:00 2013-01-24T10:46:05+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/what-is-a-router-in-computer-network Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong>What is router:&nbsp;</strong>Router is a&nbsp;<strong><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">network layer</span></strong> (<strong>Layer 3</strong>) <span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">of the OSI reference model</span> device that means it can connect multiple computer networks via wired or wireless connections. Network router can receive, analyze, perform the traffic directing functions and forwards data packet from one network to its destination node. A router is a device that forwards packets between networks by processing the routing information included in the packet.<br /></span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong>What is router:&nbsp;</strong>Router is a&nbsp;<strong><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">network layer</span></strong> (<strong>Layer 3</strong>) <span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">of the OSI reference model</span> device that means it can connect multiple computer networks via wired or wireless connections. Network router can receive, analyze, perform the traffic directing functions and forwards data packet from one network to its destination node. A router is a device that forwards packets between networks by processing the routing information included in the packet.<br /></span></p> </div> Types of Transmission Technology 2013-05-06T09:46:57+00:00 2013-05-06T09:46:57+00:00 http://mail.ecomputernotes.com/computernetworkingnotes/computer-network/transmission-technology Dinesh Thakur jimmy_k_thakur@yahoo.com <div class="feed-description"><p style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">The transmission means, is that sending a signal from one location to another. Transmission technologies refer to the physical layer protocol such as modulation, demodulation, line coding, error control etc. The transmission technology can be categorized broadly into two types:</span></p> <h2 style="text-align: justify;"><span style="font-style: normal; font-family: arial, helvetica, sans-serif; font-size: 12pt;">Broadcast networks<br /> </span></h2> <p style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">• Broadcast networks have a single communication channel that is shared or used by all the machines on the network. Short messages called packets sent by any machine are received by all the others. </span></p> </div> <div class="feed-description"><p style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">The transmission means, is that sending a signal from one location to another. Transmission technologies refer to the physical layer protocol such as modulation, demodulation, line coding, error control etc. The transmission technology can be categorized broadly into two types:</span></p> <h2 style="text-align: justify;"><span style="font-style: normal; font-family: arial, helvetica, sans-serif; font-size: 12pt;">Broadcast networks<br /> </span></h2> <p style="text-align: justify;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">• Broadcast networks have a single communication channel that is shared or used by all the machines on the network. Short messages called packets sent by any machine are received by all the others. </span></p> </div>