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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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
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TCP/IP Analyze the current options available for use of TCP/IP and OSI models for businesses. The 5-layer model serves essentially the protocols regarded as Transmission Control Protocol (TCP) as well as Internet Protocol (IP)‚ or mutually‚ TCP/IP. The User Datagram Protocol (UDP) is likewise served by this particular model. The 5-layer model was produced alongside with these protocols‚ anteceding the 7-layer model‚ and is from time to time known as the TCP Model. Layer Name
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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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MEMORANDUM TO: Network Group FROM: Student SUBJECT: Security and the OSI Model The Open Systems Interconnect (OSI) Model is the basis on which network communications function. Every network application more or less adheres to the standards of the OSI Model. Each layer of the OSI model represents a level of network functionality. For each layer‚ there are different types of security to protect the network at that layer. The physical layer is the actual medium in which the data travels
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The Seven Layers of the OSI Model Kevin Ludwig Bryant and Stratton College TECH 140 Khaled Sabha 12.08.2009 There are seven layers in the OSI model. Each layer has a function or purpose that is used to set up a network. The International Organization for Standardization began to develop the OSI framework in 1984. The purpose was to have each layer interact with the layer directly beneath it. The layers are starting from the top: Application‚ Presentation‚ Session‚ Transport‚ Network
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Table of contents: 1. Introduction 1.1 History of the Concept 2. The OSI Reference Model 2.1 OSI Layer 1: The Physical Layer 2.2 OSI Layer 2: The Data Link Layer 2.3 OSI Layer 3: The Network Layer 2.4 OSI Layer 4: The Transport Layer 2.5 OSI Layer 5: The Session Layer 2.6 OSI Layer 6: The Presentation Layer 2.7 OSI Layer 7: The Application Layer 3. Summary of the OSI reference model 4. Sources 1. Introduction Over the past forty years computer networks have dramatically
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OSI Model This memorandum will attempt to explain the Open Systems Interconnection Model‚ known more simply as the OSI Model. The OSI Model has seven levels‚ and these levels will be discussed in detail. Particular mention will be made to which level TCP/IP functions with the OSI Model. The seven levels of the OSI Model are as follows: 7) Application: Provides different services to the applications. 6) Presentation: Converts the information. 5) Session: Handles problems which are not communication
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History of the OSI Reference Model Looking at the origins of the OSI Reference Model takes us back to several issues that were discussed in the Networking Fundamentals chapter of this Guide; specifically‚ I am talking about standards and standards organizations. The idea behind the creation of networking standards is to define widely-accepted ways of setting up networks and connecting them together. The OSI Reference Model represented an early attempt to get all of the various hardware and software
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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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