Chapter 1. The TCP/IP and OSI Networking Models Page 1 of 22 Chapter 1. The TCP/IP and OSI Networking Models This chapter covers the following exam topics: Operation of IP Data Networks Recognize the purpose and functions of various network devices such as Routers‚ Switches‚ Bridges and Hubs. Select the components required to meet a given network specification. Describe the purpose and basic operation of the protocols in the OSI and TCP/IP models. Welcome to the first chapter in your
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interoperability. It was common for large networks to support multiple network protocol suites‚ with many devices unable to interoperate with other devices because of a lack of common protocols. However‚ while OSI developed its networking standards‚ TCP/IP came into widespread use on multivendor networks for internetworking; while on the local network level both Ethernet and token ring gained prominence. The OSI reference model was a major advance in the teaching of network concepts. It promoted the
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OSI vs. TCP/IP Model Comparison & Overview The Open Systems Interconnection (OSI) reference model created in the late seventies and used today consists of seven layers that include Application‚ Presentation‚ Session‚ Transport‚ Network‚ Data Link and Physical. The Application layer often dubbed Layer 7 is the most common layer to end users and can consist of applications such as Microsoft’s Internet Explorer or other browser software. The Presentation layer provides a translation of application
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of an IP address does which of the following? The subnet mask defines network and host portions of an IP address. 3. If a protocol is routable‚ which TCP/IP layer does it operate at? A routable protocol operates at the Internetwork layer of TCP/IP. 4. Which of the following is a private IP address and can’t be routed across the Internet? The IP address 172.19.243.254 falls within one of the IP address ranges reserved for private uses by Internet standards groups. 5. Which TCP/IP model
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Networking Topologies and TCP/IP protocol Bus Topology It just doesn’t get much simpler than the physical bus topology when it comes to connecting nodes on a Local Area Network (LAN). The most common implementation of a linear bus topology is IEEE 802.3 Ethernet. All devices in a bus topology are connected to a single cable called the bus‚ backbone‚ or ether. The transmission medium has a physical beginning and an end. All connections must be terminated with a resistor to keep data transmissions
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resolution arping: Capture ARP packets on the remote machine. ifconfig: Configures or displays network interface parameters for a network using TCP/IP. tcpdump: Capture and display packets on the LAN segment. ping: Sends an echo request to a network host. netstat: Work in conjunction with the ifconfig command to provide a status condition of the TCP/IP network interface. route: Manually manipulate the routing tables. ethereal: Capture network packets and provide a user friendly graphical interface
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TCP/IP LAN Check Point #8 Answer: C Explanation: The network address 150.50.0.0 that was originally assigned is a class B‚ so it has a default subnet mask of 255.255.0.0. Then you need to divide this network into 7 subnets and only the net work address 255.255.240.0 provides enough networks because it will provide 16 - 2 = 14 subnets (-1 for the network address and -1 for the broadcast address‚ which gives a -2 from the total of subnets). #9 Answer: C Explanation: The network address 209
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The two‚ OSI and TCP/IP are Standardized Protocol Architectures developed specifically for: 1. Devices to communicate 2. Vendors to have more marketable products 3. Customers to insist on standards based equipment The OSI is a reference model whilst TCP/IP is the suite which is the most widely used. Description of Open Systems Interconnection (OSI Model) Developed by the International Organization for Standardization (ISO) It is made up of seven layers and each layer: 1. performs a subset of
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Rajinder Yadav Copyright © 2007 www.devmentor.org Client / Server Programming with TCP/IP Sockets Author: Rajinder Yadav Date: Sept 9‚ 2007 Web: http://devmentor.org Email: rajinder@devmentor.org Table of Content Networks....................................................................................................................................................... 2 Diagram 1 – Communication Link.......................................................................................
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networks into smaller segments Networking Devices ... Routers - networking devices used to extend or segment networks by forwarding packets from one logical network to another - most often used in large internetworks that use the TCP/IP protocol suite and for connecting TCP/IP hosts and local area networks (LANs) to the Internet using dedicated leased lines Networking Devices ... Gateways - a device used to connect networks using different protocols. - receive data from a network using one type of
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