data communication and networking forouzan 5th edition solution manual pdf

data communication and networking forouzan 5th edition solution manual pdf

To browse Academia.edu and the wider internet faster and more securely, please take a few seconds to upgrade your browser. You can download the paper by clicking the button above. Related Papers Solution Manual for Data Communications(CCN) By Rana Zain (ZR) Solutionmanualfordatacommunicationsandnetworkingbybehrouzforouzan5theditioncomplete 140901093822 phpapp By adarsh singh niranjan Data Communications and Networking, Forouzan 4ed Solucionario By luis guillermo Solutionmanualfordatacommunicationsandnetworkingbybehrouzforouzan 121123012023 phpapp By Ranish Pottath Behrouz Forouzan Data Communications and Network Book Fi By Umar Mushtaq READ PAPER Download pdf. In this case, the data unit is a datagram. Q2-7. A user datagram is a transport-layer data unit. It decapsulates a data unit going to the application layer. In this case, the data unit is a message. Q2-8. The data unit should belong to layer 4. In this case, it is a user datagram. 1 2 Q2-9. We mentioned HTTP, FTP, SMTP, SNMP, TELNET, SSH, and DNS. Q2-10. The transport-layer packet needs to include two port numbers: source and destination port numbers. The transport-layer header needs to be at least 32 bits (four bytes) long, but we will see in Chapter 24 that the header size is normally much longer because we need to include other pieces of information. Q2-11. a. At the application layer, we normally use a name to define the destinationcomputer name and the name of the file we need to access. It only means that each of the transport-layer protocols (such as TCP or UDP) can carry a packet from any application-layer protocol that needs its service. However, a transport-layer packet can carry one, and only one, packet from an application-layer protocol. A link-layer switch is needed when we need to change a one-to-many communication to a one-to-one. Q2-15.http://servingltda.com/userfiles/craftsman-colormatic-welder-manual.xml

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We do not need a router in this case because a router is needed when there is more than one path between the two hosts; the router is responsible for choosing the best path at each moment. This means the number of hosts connected to the Internet is more than three billion. P2-4. The system transmits 150 bytes for a 100-byte message. When using large packets, the number of packets to be sent for a huge file becomes small. Since we are adding three headers to each packet, we are sending fewer extra bytes than in the case in which the number of packets is large. The disadvantage manifests itself when a packet is lost or corrupted during the transmission; we need to resend a large amount of data. P2-6. a. The network layer is responsible for route determination. b. The physical layer is the only layer that is connected to the transmission media. c. The application layer provides services for the end users. P2-7. a. User datagrams are created at the transport layer. b. The data-link layer is responsible for handling frames between adjacent nodes. c. The physical layer is responsible for transforming bits to electromagnetic signals. P2-8. There should be an upper-layer identifier in the header of the IP protocol to define to which upper-layer protocol the encapsulated packet belongs. The identifier is called the protocol field (See Figure 19.2 in Chapter 19). 4 P2-9. The following shows the situation. If we think about multiplexing as many-toone and demultiplexing as one-to-many, we have demultiplexing at the source node and multiplexing at the destination node in the data-link layer. However, some purists call these two inverse multiplexing and inverse demultiplexing. FTP HTTP DNS L1 FTP UDP Multiplexing TCP Demultiplexing SNMP DNS IP L3 a. At the source node L1 SNMP UDP Demultiplexing TCP IP L2 HTTP L2 Multiplexing L3 b. At the destination node P2-10.http://mamitobe.ru/files/craftsman-compound-miter-saw-manual.xml

Every time any packet at any layer is encapsulated inside another packet at the same layer, we can think of this as a new layer being added under that layer. The following shows the new suite. Application Security Transport Application Security Transport Network Network Link Link Physical Physical P2-11. The following shows the layers. Note that we have not shown the security checking that you need to pass through because it does not have the counterpart when you arrive. The following shows the position of the presentation layer. The new layer is at the same position as the presentation layer in the OSI model if we ignore the session layer. Application Application Presentation Transport Network Data link Physical New layer Presentation Transport Network Data link Physical P2-13. The only two layers that need to be changed are the data-link layer and the physical layer. The new hardware and software need to be installed in all host, routers, and link-layer switches. As long as the new data-link layer can encapsulate and decapsulate datagrams from the network layer, there is no need to change any protocol in the upper three layers. This is one of the characteristics of the protocol layering. P2-14. The reason for having several protocols in a layer is to provide different services to the upper-layer protocols. The services provided by UDP are different from the services provided by TCP. When we write an application program, we need to first define which transport-layer protocol is supposed to give services to this application program. Note that this does not violate the principle of layer independence. The independency of a layer means that we can change a protocol in a layer as long as the new one gives the same services as the old one. This does not mean that we can replace UDP by TCP, because they provide different services. P2-15. The following shows the layers and the flow of data.

Note that each host is involved in five layers, each switch in two layers, and each router in three layers. East coast office West coast office Point-to-point WAN R1 R2 Router Router 5 5 4 4 3 2 2 1 1 Host Switch 3 3 3 3 3 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 Router Router Switch Host. Instant download and all chapters are included. More than 830 figures and 150 tables accompany the text and provide a visual and intuitive opportunity for understanding the material. This unique approach minimizes the need for heavy math content, allowing normally complicated topics to unfold graphically and visually rather than through the presentation of complex formulas. The new edition has been reorganized to showcase recent developments in the field and minimize or eliminate coverage of deprecated topics. In addition to the updated material included in each chapter, the text now features a chapter on the peer-to-peer paradigm, a full chapter on quality of service (QoS), additional coverage of forward error correction, coverage of WiMAX, and material on socket-interface programming in Java. The end-of-chapter material has also been significantly enhanced and now includes more than 630 questions, 600 problems, many lab assignments, programming assignments, and online applets that allow students to see problems and protocols in action. Technologies related to data communications and networking are among the fastest growing in our culture today, and there is no better guide to this rapidly expanding field than Behrouz Forouzan, an author whose visual, student-friendly approach has become a hallmark in computer science instruction. He has been teaching for many years at DeAnza College, where he has been involved in their course development for the Computer Science department. Additionally, he works as a System Development Consultant for various companies. The general factors are size, distances (covered by the network), structure, andownership.1 2 11.

An internet is an interconnection of networks. The Internet is the name of a spe-cific worldwide network 12. A protocol defines what is communicated, in what way and when. This providesaccurate and timely transfer of information between different devices on a net-work. 13. Standards are needed to create and maintain an open and competitive market formanufacturers, to coordinate protocol rules, and thus guarantee compatibility ofdata communication technologies. Exercises14. Unicode uses 32 bits to represent a symbol or a character. If the drop-line fails, only the corresponding device cannot operate.d. Ring Topology: The failed connection may disable the whole network unless it is a dual ring or there is a by-pass mechanism. 18. This is a LAN. The Ethernet hub creates a LAN as we will see in Chapter 13.19. Theoretically, in a ring topology, unplugging one station, interrupts the ring. How- ever, most ring networks use a mechanism that bypasses the station; the ring cancontinue its operation. 20. In a bus topology, no station is in the path of the signal. Unplugging a station hasno effect on the operation of the rest of the network. 21. See Figure 1.1 22. See Figure 1.2.23. a. E-mail is not an interactive application. Even if it is delivered immediately, itmay stay in the mail-box of the receiver for a while. It is not sensitive to delay. b. We normally do not expect a file to be copied immediately. It is not very sensi-tive to delay. c. Surfing the Internet is the an application very sensitive to delay. We except toget access to the site we are searching. 24. In this case, the communication is only between a caller and the callee. A dedi-cated line is established between them. The connection is point-to-point. 3 25. The telephone network was originally designed for voice communication; theInternet was originally designed for data communication. The two networks aresimilar in the fact that both are made of interconnections of small networks.

Thetelephone network, as we will see in future chapters, is mostly a circuit-switchednetwork; the Internet is mostly a packet-switched network. Figure 1.1 Solution to Exercise 21 Figure 1.2 Solution to Exercise 22 Station StationStationRepeat er Station StationStationRepeat er Station StationStationRepeater Hub Station Station Station Station Repeater Repeater 4 Sol-02.fm Page 1 Saturday, January 21, 2006 10:27 AMCHAPTER 2 Network ModelsSolutions to Review Questions and ExercisesReview Questions1. The Internet model, as discussed in this chapter, include physical, data link, net- work, transport, and application layers.2. The network support layers are the physical, data link, and network layers.3. The application layer supports the user.4. The transport layer is responsible for process-to-process delivery of the entire message, whereas the network layer oversees host-to-host delivery of individualpackets. 5. Peer-to-peer processes are processes on two or more devices communicating at asame layer 6. Each layer calls upon the services of the layer just below it using interfacesbetween each pair of adjacent layers. 7. Headers and trailers are control data added at the beginning and the end of eachdata unit at each layer of the sender and removed at the corresponding layers of thereceiver. They provide source and destination addresses, synchronization points,information for error detection, etc. 8. The physical layer is responsible for transmitting a bit stream over a physicalmedium. It is concerned with a. physical characteristics of the mediab.The network layer is concerned with delivery of a packet across multiple net- works; therefore its responsibilities includea.The physical address is the local address of a node; it is used by the data link layerto deliver data from one node to another within the same network. The logicaladdress defines the sender and receiver at the network layer and is used to delivermessages across multiple networks.

The port address (service-point) identifies theapplication process on the station. 13. The application layer services include file transfer, remote access, shared data-base management, and mail services. 14. The application, presentation, and session layers of the OSI model are representedby the application layer in the Internet model. The lowest four layers of OSI corre-spond to the Internet model layers. Exercises15. The International Standards Organization, or the International Organization of Standards, (ISO) is a multinational body dedicated to worldwide agreement oninternational standards. An ISO standard that covers all aspects of network com-munications is the Open Systems Interconnection (OSI) model. 16.a. Route determination: network layerb. Flow control: data link and transport layersc. Interface to transmission media: physical layerd. Access for the end user: application layer 17.a. Reliable process-to-process delivery: transport layerb. Route selection: network layerc. Defining frames: data link layerd. Providing user services: application layere. Transmission of bits across the medium: physical layer 18.a. Communication with users application program: application layerb. Error correction and retransmission: data link and transport layersc. Mechanical, electrical, and functional interface: physical layer 3 Sol-02.fm Page 3 Saturday, January 21, 2006 10:27 AMd. Responsibility for carrying frames between adjacent nodes: data link layer19. a. Format and code conversion services: presentation layerb. Establishing, managing, and terminating sessions: session layerc. Ensuring reliable transmission of data: data link and transport layersd. Log-in and log-out procedures: session layere. Providing independence from different data representation: presentation layer 20. See Figure 2.1. 21. See Figure 2.2. 22. If the corrupted destination address does not match any station address in the net-work, the packet is lost.

If the corrupted destination address matches one of the sta-tions, the frame is delivered to the wrong station. In this case, however, the errordetection mechanism, available in most data link protocols, will find the error anddiscard the frame. In both cases, the source will somehow be informed using oneof the data link control mechanisms discussed in Chapter 11. 23. Before using the destination address in an intermediate or the destination node, thepacket goes through error checking that may help the node find the corruption(with a high probability) and discard the packet. Note: this is not a text book. File Format: PDF or Word Chapter 1 Introduction. Chapter 2 Network Models. Chapter 3 Introduction to Physical Layer. Chapter 4 Digital Transmission. Chapter 5 Analog Transmission. Chapter 6 Bandwidth Utilization: Multiplexing and Spectrum Spreading. Chapter 7 Transmission Media. Chapter 8 Switching. Chapter 9 Introduction to Data-Link Layer. Chapter 10 Error Detection and Correction. Chapter 11 Data Link Control (DLC). Chapter 12 Media Access Control (MAC). Chapter 13 Wired LANs: Ethernet. Chapter 14 Other Wired Networks. Chapter 15 Wireless LANs. Chapter 16 Other Wireless Networks. Chapter 17 Connecting Devices and Virtual LANs. Chapter 18 Introduction to Network Layer. Chapter 19 Network-Layer Protocols. Chapter 20 Unicast Routing. Chapter 21 Multicast Routing. Chapter 22 Next Generation IP. Chapter 23 Introduction to Transport Layer. Chapter 24 Transport-Layer Protocols. Chapter 25 Introduction to Application Layer. Chapter 26 Standard Client-Server Protocols. Chapter 27 Network Management. Chapter 28 Multimedia. Chapter 29 Peer-to-Peer Paradigm. Chapter 30 Quality of Service. Chapter 31 Cryptography and Network Security. Chapter 32 Internet Security Rating: Bad.

Solutions Manuals are available for thousands of the most popular college and high school textbooks in subjects such as Math, Science ( Physics, Chemistry, Biology ), Engineering ( Mechanical, Electrical, Civil ), Business and more. Understanding Data Communications And Networking 5th Edition homework has never been easier than with Chegg Study. Unlike static PDF Data Communications And Networking 5th Edition solution manuals or printed answer keys, our experts show you how to solve each problem step-by-step. No need to wait for office hours or assignments to be graded to find out where you took a wrong turn. You can check your reasoning as you tackle a problem using our interactive solutions viewer. Plus, we regularly update and improve textbook solutions based on student ratings and feedback, so you can be sure you're getting the latest information available. Hit a particularly tricky question. Bookmark it to easily review again before an exam. The best part? As a Chegg Study subscriber, you can view available interactive solutions manuals for each of your classes for one low monthly price. Why buy extra books when you can get all the homework help you need in one place? Just post a question you need help with, and one of our experts will provide a custom solution. You can also find solutions immediately by searching the millions of fully answered study questions in our archive. Asking a study question in a snap - just take a pic. Solutions Manuals are available for thousands of the most popular college and high school textbooks in subjects such as Math, Science ( Physics, Chemistry, Biology ), Engineering ( Mechanical, Electrical, Civil ), Business and more. Understanding Data Communications and Networking homework has never been easier than with Chegg Study. Unlike static PDF Data Communications and Networking solution manuals or printed answer keys, our experts show you how to solve each problem step-by-step.

No need to wait for office hours or assignments to be graded to find out where you took a wrong turn. You can check your reasoning as you tackle a problem using our interactive solutions viewer. Plus, we regularly update and improve textbook solutions based on student ratings and feedback, so you can be sure you're getting the latest information available. Hit a particularly tricky question. Bookmark it to easily review again before an exam. The best part? As a Chegg Study subscriber, you can view available interactive solutions manuals for each of your classes for one low monthly price. Why buy extra books when you can get all the homework help you need in one place? Just post a question you need help with, and one of our experts will provide a custom solution. You can also find solutions immediately by searching the millions of fully answered study questions in our archive. Asking a study question in a snap - just take a pic.