Computer networking a top-down approach 6rd edition pdf năm 2024

A Studocu não é patrocinada ou endossada por alguma faculdade ou universidade Kurose, Ross - 'Computer networking...A top down approach' (6th edition solutions) Redes de Computadores (Instituto Politécnico de Lisboa) A Studocu não é patrocinada ou endossada por alguma faculdade ou universidade Kurose, Ross - 'Computer networking...A top down approach' (6th edition solutions) Redes de Computadores (Instituto Politécnico de Lisboa) Descarregado por Rodrigo Moutinho ([email protected])lOMoARcPSD|24898183

Computer Networking: A Top-Down Approach, 6thEdition Solutions to Review Questions and Problems Version Date: May 2012 This document contains the solutions to review questions and problems for the 5th edition of Computer Networking: A Top-Down Approach by Jim Kurose and Keith Ross. These solutions are being made available to instructors ONLY. Please do NOT copy or distribute this document to others (even other instructors). Please do not post any solutions on a publicly-available Web site. We’ll be happy to provide a copy (up-to-date) of this solution manual ourselves to anyone who asks. Acknowledgments:Over the years, several students and colleagues have helped us prepare this solutions manual. Special thanks goes to HongGang Zhang, Rakesh Kumar, Prithula Dhungel, and Vijay Annapureddy. Also thanks to all the readers who have made suggestions and corrected errors. All material © copyright 1996-2012 by J.F. Kurose and K.W. Ross. All rights reserved Chapter 1 Review Questions 1.There is no difference. Throughout this text, the words “host” and “end system” are used interchangeably. End systems include PCs, workstations, Web servers, mail servers, PDAs, Internet-connected game consoles, etc. Descarregado por Rodrigo Moutinho ([email protected])lOMoARcPSD|24898183

2.From Wikipedia: Diplomatic protocol is commonly described as a set of international courtesy rules. These well-established and time-honored rules have made it easier for nations and people to live and work together. Part of protocol has always been the acknowledgment of the hierarchical standing of all present. Protocol rules are based on the principles of civility. 3.Standards are important for protocols so that people can create networking systems and products that interoperate. 4.1. Dial-up modem over telephone line: home; 2. DSL over telephone line: home or small office; 3. Cable to HFC: home; 4. 100 Mbps switched Ethernet: enterprise; 5. Wifi (802.11): home and enterprise: 6. 3G and 4G: wide-area wireless. 5.HFC bandwidth is shared among the users. On the downstream channel, all packets emanate from a single source, namely, the head end. Thus, there are no collisions in the downstream channel. 6.In most American cities, the current possibilities include: dial-up; DSL; cable modem; fiber- to-the-home.

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COMPUTER NETWORKING A TOP-DOWN APPROACH 6TH EDITION KUROSE

Wireshark Lab: ICMP

SOLUTION

Supplement to

Computer Networking: A Top-Down

Approach, 6

th

ed.,

J.F. Kurose and K.W. Ross

© 2005-21012, J.F Kurose and K.W. Ross, All Rights Reserved

The solutions below are based on the trace files

ICMP-ethereal-trace-1 and ICMP-ethereal-trace-

2

Figure 1: Screenshot after the PING request

©2013 Pearson Education, Inc. Upper Saddle River, NJ. All Rights Reserved.

1. What is the IP address of your host? What is the IP address of the destination host?

ANSWER:

The IP address of my host is 192.168.1.101. The IP address of the destination host is 143.89.14.34.

2.

Why is it that an ICMP packet does not have source and destination port numbers?

ANSWER:

The ICMP packet does not have source and destination port

numbers because it was designed to communicate network-layer information between hosts and routers, not between application layer processes. Each ICMP packet has a "Type" and a "Code". The Type/Code combination identifies the

©2013 Pearson Education, Inc. Upper Saddle River, NJ. All Rights Reserved.

specific message being received. Since the network software itself interprets all ICMP messages, no port numbers are needed to direct the ICMP message to an application layer process.

Figure 2: ICMP Echo Request message

3.

Examine one of the ping request packets sent by your host. What are the ICMP type and code numbers? What other fields does this ICMP packet have? How many bytes are the checksum, sequence number and identifier fields?

ANSWER:

The ICMP type is 8, and the code number is 0. The ICMP packet also has checksum, identifier, sequence number, and data fields. The checksum, sequence number and identifier fields are two bytes each.