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
Free OSI model Internet Protocol Suite Ethernet
Introduction Prior to OSI‚ networking was largely either government-sponsored or vendor-developed and proprietary standards such as SNA and DECnet. In the UK work on the Experimental Packet Switched system circa 1973‚ the need to define so called higher level protocols above the HDLC link level communications protocol and the content of an NCC publication ’Why Distributed Computing’ resulting from considerable research into future configurations for computer systems resulted in the UK presenting
Free OSI model
made up of how many bits? An IPv6 address is made up of 128 bits. 2. The subnet mask 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
Premium IP address
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
Free OSI model Internet Protocol Suite
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
Premium Network topology Computer network
Exercise 2 LAB REPORT Q:What is the default directory when you open a new command window? What is your working directory? A: /home/guest/ /home/guest/fangyuliu Exercise 3 LAB REPORT Q:Is the Internet service daemon‚ xinetd‚ started in your system? Is inetd started in your system? Why? A:xinetd(extended Internet daemon) is started in my system rather than inetd (internet service daemon). Both of them are super-server daemon started only under request. Because xinetd is more secure than
Premium Transmission Control Protocol Internet Protocol Suite Internet Protocol
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
Premium IP address Subnetwork Classful network
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.......................................................................................
Premium IP address Transmission Control Protocol Internet Protocol
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
Premium OSI model Internet Protocol Suite
Unit 7: Internetworking Using TCP/IP: Part 2 Abstract IP uses the Address Resolution Protocol‚ ARP‚ to bind a next-hop IP address to an equivalent MAC address. ARP defines the format of messages that computers exchange to resolve an address‚ the encapsulation‚ and the rules for handling ARP messages. The NAT mechanism allows a site to have multiple computers using the Internet through a single IP address. The User Datagram Protocol provides end-to-end message transport from an application
Premium IP address Internet Protocol