· routers, like every other device on the network, send and receive data on the network, and build ARP tables that map IP addresses to MAC addresses · if the source resides on a network that has a different network number than the desired destination, and if the source does not know the MAC address of the destination, it will have to use the router as a default gateway for its data to reach the destination · routed protocols direct user traffic, whereas routing protocols work between routers to maintain path tables · network discovery for distance-vector routing involves exchange of routing tables The next chapter discusses the functions of the transport layer. Bibliography: www.news.com
It then connects to other computers through the network media. Media refers to the various physical environments through which transmission signals pass. Common network media include twisted-pair, coaxial, and fiber-optic cable, and even the earth's atmosphere through which wireless transmission occurs. A protocol is a set of rules. In the case of a network protocol, it is a set of rules by which computers communicate.
To do this the machines have to be connected in some way that allows communication, and have an agreed upon a language to talk when they do communicate. Components of a network might include individual hosts, some form of communications hardware, a network protocol and a collection of network services. B) Individual hosts A network is a collection of individual machines sometimes referred to as hosts. Each host (computer) must have some unique identifier that allows other hosts to talk to it. 1.2 COMPONENTS OF A NETWORK A) Network Protocol In order to communicate the parties must speak the same language.
The packet-switching nature of the Internet gives it sufficient speed and flexibility to support real-time communication, such as sending messages to other people in a chat environment (IRC). Every packet is written in a particular protocol language, called TCP/IP, which stands for Transmission Control Protocol/Internetworking Protocol. This protocol is the common language of the Internet, and it supports two major programs called File Transfer Protocol (FTP) and Telenet. FTP lets the transfer files from one Internet computer to another. Telnet lets a person to log into a remote computer.
Angel Santizo Routers A router is a device used to connect two or more networks and move data between them. Routers work at the network layer of the OSI model. Routers are mainly used to connect networks and keep traffic between them under control. Companies that make routers include: Belkin, Cisco and Linksys. How do they Work?
They will still be able to communicate with other areas when needed by sending the packet through the routers on the distribution layer. An example is VLAN 40 and the local DNS server, while on the same switch, cannot communicate with each other. The packet will go up to the router in the distribution layer, then back down to the switch to reach its destination. To keep the sales department from being able to access the accounting department, an ACL (Access Control List) will be used. To make it simple to understand, I will use a named extended ACL.
One option that an organization can choose is to subnet its IP address space, which means the remaining bits are divided into a subnet part and a host part. When figuring out how many possibilities one has for their subnet, they can use the equation 2N. However, it is important to remember that a network, subnet, or host can’t be all 0s or 1s. With this in mind, an organization can have 2N-2 networks, subnets, or hosts. When it comes to creating one’s IP address, one realizes that the larger the subnet part is, the more subnets an organization can have.
The transport control protocol (TCP) is the backbone of the Internet; it is basically how data packets are sent to their destination from where they are originally. This protocol helps connect two networks together, so that the IP address protocol can deliver the packets. The protocol makes sure that the data is delivered exactly the way it was sent, by doing error checks. Web browsers use this protocol to send emails and connect to the World Wide Web servers. Application
TCP/IP Name Affiliation Date TCP/IP Introduction TCP stands for Transmission control protocol while IP stands for Internet protocol. They are merged together to form the Internet protocol suit which is a model for networking which consists of communication protocols which are used for internet and other similar networks. This protocol suite was designed and developed by the Department of Defense (DoD). It was developed in order to connect different networks which were designed by different vendors. By use of TCP/IP, several computers on small network in a department can use these protocols in conjunction with other protocols on a single LAN.
The internet can also be accessed by higher speed sources, such as cable, DSL and ISDN. Telecommunications systems deliver messages using a number of dif... ... middle of paper ... ... they need to be in, or may have several errors contained in them. · Routers – Connect network segments and intelligently direct data. They are used to connect LANs to WANs. It operates at the network layer of the OSI model.