SOLUTIONS MANUAL DATA AND COMPUTER COMMUNICATIONS EIGHTH EDITION CHAPTERS 1 - 12 WILLIAM STALLINGS Copyright 2007: William Stallings © 2007 by William Stallings All rights reserved. No part of this document may be reproduced‚ in any form or by any means‚ or posted on the Internet‚ without permission in writing from the author. Selected solutions may be shared with students‚ provided that they are not available‚ unsecured‚ on the Web. -2- NOTICE This manual contains
Premium Data transmission OSI model Data Link Layer
mmTASK 1 a) Explain the following types of data communication networks and their applications * Public switched telephone network (PSTN) * Local area networks (LANs) * Metropolitan area networks (MANs) * Wide area networks (WANs) * Packet switched data network (PSDN)‚ * Integrated services digital network (ISDN) Public switched telephone network (PSTN) Public Switched telephone network (PSTN) is the global collection of interconnects originally designed to
Premium OSI model Local area network Ethernet
CHAPTER 17 SPONTANEITY‚ ENTROPY‚ AND FREE ENERGY Questions 11. Living organisms need an external source of energy to carry out these processes. Green plants use the energy from sunlight to produce glucose from carbon dioxide and water by photosynthesis. In the human body‚ the energy released from the metabolism of glucose helps drive the synthesis of proteins. For all processes combined‚ ∆Suniv must be greater than zero (the second law). 12. Dispersion increases the entropy of the universe because
Premium Entropy Chemical reaction Thermodynamics
to network security management. Network security management is equivalent to managing a computerised network against security threads‚ unauthorised access‚ misuse and modifications. In today’s interconnected society the protection of confidential data‚ business continuity‚ availability and integrity became of great importance to any organisation. This document aims to provide you with a better understanding of network security in terms of history‚ network security policies‚ prevention systems and
Premium Security Computer security Information security
DATA COMMUNICATION COEN 3193 Assignment No. 1 Brief History of Data Communication Submitted by: Camille A. Bonito BSCpE IV-2 Submitted to: Florinda H. Oquindo TIMELINE OF HISTORY OF DATA COMMUNICATION 1800 Telegraph defined from the Greek... TELE = Afar GRAPHOS = Write 1809 First telegraph in Bavaria. Samuel Soemmering. Used 35 wires with gold electrodes in water. Detection at distant end 2000 feet away was by the amount of gas caused by electrolysis. 1828 First telegraph in the USA
Premium Bell System AT&T
Transmission Media • Transmission medium – Physical path between transmitter and receiver – May be guided (wired) or unguided (wireless) – Communication achieved by using em waves • Characteristics and quality of data transmission – Dependent on characteristics of medium and signal – Guided medium ∗ Medium is more important in setting transmission parameters – Unguided medium ∗ Bandwidth of the signal produced by transmitting antenna is important in setting transmission parameters ∗ Signal directionality
Premium Electromagnetic radiation Twisted pair Coaxial cable
Chapter 4 Receivables and Related Revenues MULTIPLE CHOICE – THEORY 1. D 6. D 2. C 7. B 3. C 8. B 4. B 9. A Problem 1 (Fontana Blue) a. Cost of Sales Inventory 20‚000 b. Cost of Sales Inventory 18‚000 18‚000 c. No adjustment d. Sales 20‚000 40‚000 Accounts Receivable e. 40‚000 Sales 60‚000 Accounts Receivable 60‚000 Inventory 33‚600 Cost of Sales f. 33‚600 Sales 120‚000 Accounts Receivable g. 120‚000
Premium Generally Accepted Accounting Principles Accounts receivable Depreciation
Problem 6-36 1. Machine supplies: $102‚000 / 34‚000 DLH = $3/hr January: 23‚000 DLH x $3 = $69‚000 Depreciation: Fixed at $15‚000 2. Plant maintenance cost: | March | January | | (34‚000 hrs) | (23‚000hrs) | Total cost*Less: Machine Supplies DepreciationPlant maintenance | $ 586‚000(102‚000) (15‚000)$ 469‚000 | $ 454‚000(69‚000) (15‚000)$ 370‚000 | *Excludes supervisory labor cost Variable maintenance cost
Premium Costs Variable cost Cost
7th Edition Chapter Two Solutions 10 March 2006 1. (a) 12 μs (b) 750 mJ (c) 1.13 kΩ (d) 3.5 Gbits (e) 6.5 nm (f) 13.56 MHz (g) 39 pA (h) 49 kΩ (i) 11.73 pA PROPRIETARY MATERIAL. © 2007 The McGraw-Hill Companies‚ Inc. Limited distribution permitted only to teachers and educators for course preparation. If you are a student using this Manual‚ you are using it without permission. Engineering Circuit Analysis‚ 7th Edition Chapter Two Solutions 10 March 2006 2. (a)
Premium Resistor Marketing Series and parallel circuits
Page 2 Data communications (Datacom) is the engineering Datacom) discipline concerned with the communication between devices. A network is a set of devices (often referred to as nodes) nodes) connected by communication links. links. A computer network is any set of computers or devices connected to each other via some form of transmission medium with the ability to exchange data. Here information is presented in a form which is agreed upon by the parties creating and using the data. A computer
Premium Computer network Computer networking Data transmission