· 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
Routing tables are either created statically, or by the systems administrator configuring the system, using the startup or configuration fiels, to used a pre-defined, unchanging route.dynamically. · There are protocols, part of TCP/IP, that will dynamically modify the routing table in response to events. · Adding a host to the network requires obtaining, installing and configuring the necessary network hardware, gather the required information including IP address and hostname of the new host, the gateway and the name server, the network address and the subnet mask, modify the appropriate configuration and startup files with that information, make sure the new host has an entry in the domain name service, test the connection.
Hubs should be used with restraint for that matter. A network switch also connects computers to each other, but unlike a hub. hen a switch receives a packet of data, it is smart enough to know what computer or device the packet is destined, for and sends it accordingly. A network router is different from both a switch and a hub. Routers primarily route data packets to other networks.
The present paper provides the solution to the problem during the communication between the client and server. For this he used smart card and transport layer security/SSL protocols. Its main aim is to overcome the personal issues between two clients for communication. First thing to be considered is SSL protocol which provides integrity check for TCP/IP connection. It provides the secret way of sending data The second one is smart card in which a mini 8-bit processor and temporary hard disk are present.
Midterm Examination Written Responses Presented in NET-102 Networking Essentials II by Ryan C Dobbs Baker College of Auburn Hills, Michigan 5/12/14 Dr. Terrance Dillard Professor QUESTION 1 In a computer network, switches are devices that are used to connect devices together. Multiple cables can be connected to a switch to enable networked devices to communicate with each other. The role of a switch is to manage the flow of data throughout a network and this process is effective in its role due to the fact that the messages are sent only to the intended target. The media access control (MAC) is the identification that each device connected to the switch carries. By each device having individual IDs this increases the overall effectiveness and security of a network.
Based on the network topology and devices that reside on the network, the protocols that will be discussed are IMCP, TCP, IP, UDP, DNS, FTP, HTTP, IMAP4, POP3, SIP, SMTP, SNMP, SSH, and Rlogin. These protocols are integral to Ethernet networks; some are required, some optional, and some to be avoided but replaced with better solutions. The Internet Control Message Protocol (ICMP) is a network layer protocol. "It is one of the core protocols of the Internet protocol suite." IMCP is primarily used in reporting network errors on the network commonly seen when pinging or using trace routes when trouble shooting connectivity.
Why? Routers are used to connect networks together and they also do the following network functions. FUNCTIONS OF A ROUTER • Control broadcasts on the LAN • Act as the default gateway • Translate protocols when necessary • Send data to different networks • Learn and advertise loop free paths • Show the most efficient path to reach the correct destination At the physical, data link and network layer Networks (most of the time Ethernet) use broadcast communication. Transmissions on the network layer broadcast to all devices or servers on the network layer. Network broadcast communication i... ... middle of paper ... ...een programmed this way, and finds routes based off of other routers.
This is the layer that transports the data between network nodes in a wide area network (WAN) or on the same local area network (LAN) between nodes. The data link layer makes available the procedural and functional means to move data between network devices and could provide the measures to find and possibly correct errors that may occur in the physical layer. The security vulnerabi... ... middle of paper ... ...on. This is to stop any unauthorized use of the network. Conclusion In conclusion, the information covered in this paper shows the different types of security that is associated with each level of the standard OSI model.
It is used to segment a network and hold back frames that are intended for the local area network while transmitting those that are needed to be sent to the other networks. This improves level of privacy since the information intended for one network cannot be listened on the other connected network. It also reduces traffic and collisions on all networks. A bridge connecting two networks The difference between a switch and a bridge is that each port on a switch is its own collision domain. A collision domain is formed between any two connected devices via a sw... ... middle of paper ... ...so a trusted method of securing data and used as an internet standard.
Communication protocols are the force by which network devices can communicate with one another. The main protocols used by applications are TCP, UDP, IP protocols, ICMP, IGMP, SCTP and DCCP, ARP, and routing protocols. Each protocol serves its own unique purpose, for example HTTP uses TCP port 80. TCP or Transmission Control Protocol uses a handshake method to make sure that data makes it to a location in full, and in the correct order. This is important for data such as Web pages, because if the data was corrupted it would be impossible for the end user to read.