Computer Networks and Open Systems: An Application Development Perspective

by Cassel, L.N.; Austing, R.H.

• ISBN13: 9780763711221
• ISBN10: 0763711225
• Format: Paperback
• Copyright: 2000-03-17
• Publisher: Jones & Bartlett Learning

Summary

Computer Networks and Open Systems: An Application Development Perspective  covers principles, theory, and techniques of networks and open systems from a practical perspective, using real system and network applications as its basis. The selection of topics forms a core of material in computer networking, emphasizing methods And The environment for application development. The text aims to make readers immediately comfortable in today's networking environment while equipping them to keep pace in one of the fastest moving and most exciting areas of computer system development.  Students will enter the study of networking through their own experience as a network users, and they will have the opportunity to practice the kind of networking tasks they will perform in the workplace.   the authors take an application development perspective.  This point of view reverses that traditional order of networking topics; instead of proceeding from the Physical Layer upward, The authors move from the Application Layer downward.   

Table of Contents

Preface	xxi
Intended Audience and Supplementary Materials	xxv
I FUNDAMENTALS	1	(104)
Networked Computers	3	(47)
A Networking Applications Example	4	(4)
Proprietary vs. Open Systems	5	(1)
Communications Requirements	5	(3)
What Is a Network?	8	(1)
Reasons for Installing Networks	9	(1)
Network System Software	9	(2)
Network Protocols and Standards	11	(4)
Protocol Example	11	(2)
An Argument for Standards	13	(1)
Communication Modes	14	(1)
Layering and Network Reference Models	15	(11)
The Concept of Layering	15	(1)
The TCP/IP Suite of Protocols	16	(1)
SNA	17	(2)
The OSI Reference Model	19	(3)
Presentation and Session Layer	22	(2)
Transport Layer	24	(1)
Network, Data Link, and Physical Layers	25	(1)
The OSI Model and the World Wide Web	26	(1)
Interactions Between the Layers	27	(3)
Services	27	(1)
Data Units	28	(1)
Layer Operation	29	(1)
Service Specifications	30	(6)
Service Primitives	30	(2)
Time Sequence Diagrams	32	(2)
Protocol Machines	34	(2)
The Major Types of Networks	36	(14)
Local Area Networks	38	(5)
Wide Area Networks	43	(3)
Metropolitan Area Networks	46	(1)
Summary	47	(1)
Exercises	48	(2)
The Internet and the World Wide Web	50	(32)
What Is the Internet?	51	(2)
The World Wide Web	52	(1)
Hypertext and Hypermedia	53	(4)
Browsers	53	(1)
Cascading Style Sheets	53	(2)
File Formats	55	(2)
Beyond HTML: XML	57	(1)
Protocols	57	(3)
HTTP	57	(1)
Gopher	58	(1)
FTP	59	(1)
File	59	(1)
Mailto	59	(1)
News	60	(1)
Application Development in the World Wide Web	60	(13)
Forms and Form Servers	60	(1)
HTML Forms	61	(4)
Forms Processing	65	(6)
Java	71	(2)
Information Discovery	73	(9)
Anonymous FTP and Archie	73	(1)
Gopher and Veronica	74	(1)
Web Searchers and Indexing	74	(3)
Metadata	77	(2)
Summary	79	(1)
Exercises	79	(3)
ASN.1	82	(23)
Purpose of ASN.1	82	(1)
Example	83	(1)
Abstract Syntax Notation	83	(22)
Modules and Assignments	84	(1)
Built-in Types	85	(7)
Tagged	92	(2)
Useful Types	94	(1)
Additional Features	95	(5)
Summary	100	(1)
Exercises	101	(4)
II THE APPLICATION LAYER	105	(188)
The Application Layer: Common Elements	107	(27)
Common Needs of Applications	108	(1)
Association and Shared Context	108	(6)
Association: Concepts and Processes	109	(1)
ACSE: The Service	109	(3)
ACSE: The Protocol	112	(2)
Remote Operation of Instructions	114	(7)
Concepts and Processes	117	(1)
ROSE: The Service	118	(1)
ROSE: The Protocol	119	(1)
An Example Using ROSE	119	(2)
Reliable Transfer of Information	121	(3)
Reliable Transfer: Concepts and Processes	121	(1)
RTSE: The Service	122	(1)
RTSE: The Protocol	123	(1)
Services Required by RTSE	123	(1)
Commitment, Concurrency, and Recovery	124	(6)
CCR: Concepts and Processes	124	(2)
CCR: The Service	126	(3)
CCR: The Protocol	129	(1)
Some Common Tools from the TCP/IP Environment	130	(4)
PING	130	(1)
Traceroute	131	(1)
Summary	132	(1)
Exercises	133	(1)
Applications: Electronic Messaging Systems	134	(45)
A Model for Electronic Messaging	135	(9)
User Agents	136	(1)
Message Transfer Agents: X.400 MTA and Internet SMTP	136	(7)
Access Units	143	(1)
Message Store	143	(1)
The Protocols	143	(1)
The Mail Access Environment	144	(5)
Message Creation and Presentation	147	(2)
Dealing with Addresses	149	(8)
Making Two Different Mail Systems Talk to Each Other	149	(1)
Internet Domain Name Addresses	150	(1)
Resolving Addresses: Domain Name Service	151	(2)
X.400 O/R Addresses and the Directory	153	(1)
Aliases and Distribution Lists	153	(3)
Distribution Lists in X.400	156	(1)
Retaining and Discarding Messages	157	(7)
Folders	157	(1)
Message Storage and Retrieval	157	(4)
Knowing About Mail Delivery or Failure	161	(3)
The System Components	164	(7)
Parsing the Mail Envelope/Header	164	(1)
Receiving Mail	165	(1)
Delivery of Mail Messages	166	(5)
X.400 Messaging System	171	(8)
Management Domains	171	(1)
X.400 in the Application Layer	171	(1)
Services	172	(1)
Message Format	172	(1)
Security	173	(1)
Summary	174	(1)
Exercises	175	(4)
Virtual Terminals	179	(21)
Virtual Device Interface	179	(2)
Terminal Emulation	181	(4)
Terminal Imitation with Kermit	181	(1)
Terminal Conformance with UNIX Termcap	182	(2)
Terminal Characteristics Negotiation with Telnet	184	(1)
The OSI Virtual Terminal	185	(15)
VT Classification	186	(1)
The OSI Virtual Terminal Service Model	186	(10)
Using VT Services: Some Examples	196	(3)
Summary	199	(1)
Exercises	199	(1)
File Access and Transfer	200	(32)
File System Characteristics	201	(3)
Structure	201	(2)
Attributes	203	(1)
Operations	204	(1)
File Transfer Modes and Options	204	(5)
Kermit	206	(1)
FTP	207	(1)
Network File System	208	(1)
Issues in Network-Based File Systems	209	(2)
File Transfer, Access, and Management	211	(21)
A Virtual Filestore	212	(3)
FTAM Service Elements	215	(1)
FTAM Regimes	216	(6)
The FTAM Services	222	(2)
Using FTAM for File Access: Some Examples	224	(6)
Summary	230	(1)
Exercises	230	(2)
The Directory X.500 and LDAP	232	(17)
Characteristics	234	(1)
The Distributed Directory	235	(12)
The Directory Information Base	236	(3)
The Directory Schema	239	(1)
The Directory Service	239	(5)
Operation of the Model	244	(1)
Replication	245	(2)
Directory Protocols	247	(2)
Summary	247	(1)
Exercises	248	(1)
Encryption and Compression	249	(44)
Secure Transmission of Messages	250	(18)
Terminology	250	(1)
Security Services	251	(1)
Private and Public Key Systems	252	(5)
Digital Signatures	257	(2)
Trusted Server Systems	259	(3)
Tools to Detect Network Vulnerabilities	262	(1)
Secure Sockets Layer	263	(1)
Electronic Mail Security	264	(4)
Data Compression	268	(25)
Terminology	269	(1)
Categories	269	(1)
Methods	270	(19)
Summary	289	(1)
Exercises	290	(3)
III THE SUPPORTING STRUCTURE	293	(132)
Presentation and Session Layers	295	(15)
Presentation Layer	296	(7)
Services Provided by the Presentation Layer	296	(2)
Basic Encoding Rules (BER)	298	(5)
Session Layer	303	(7)
Tokens	304	(1)
Synchronization and Activity Concepts	304	(1)
Services Provided by the Session Layer	305	(3)
Connectionless Session Service	308	(1)
Summary	308	(1)
Exercises	309	(1)
Transport Layer	310	(33)
The Services Provided by the Transport Layer	311	(1)
The OSI Transport Service	312	(3)
Network Service Relevant to Transport Services	313	(1)
Connection Establishment in OSI	314	(1)
Data Transfer in OSI	315	(1)
Connection Release in OSI	315	(1)
The Internet TCP Transport Service	315	(6)
Connection Establishment in TCP	317	(1)
Data Transfer in TCP	318	(1)
Status and Error Reporting in TCP	318	(1)
Connection Termination in TCP	318	(3)
The Transport Protocol	321	(13)
Connection Establishment	321	(2)
Data Transfer	323	(9)
Connection Release	332	(2)
Connection-Oriented vs. Connectionless Services	334	(1)
Application Program Interfaces (API)	335	(5)
X-Open Interface to OSI Transport Services	336	(1)
UNIX Interface to TCP	337	(3)
Services Required by the Transport Layer	340	(3)
Summary	340	(2)
Exercises	342	(1)
Network Layer	343	(30)
Addressing	344	(9)
Internet Addresses	344	(2)
IPv6 Addressing	346	(3)
OSI Addresses	349	(4)
Routing	353	(6)
Routing Techniques	353	(1)
Discovery	354	(1)
IS to IS Routing	354	(5)
Firewalls	359	(5)
Architectures	360	(2)
Examples	362	(1)
Tradeoffs	363	(1)
Services Provided by the Network Layer	364	(9)
Connection-Oriented Network Services	364	(1)
Connectionless Network Service	365	(4)
Segmentation and Reassembly	369	(1)
Summary	370	(1)
Exercises	371	(2)
Medium Access Control	373	(26)
Variations on Medium Access Control	374	(1)
Contention-Based Access	374	(13)
Alohanet	374	(4)
Carrier Sense Multiple Access	378	(9)
Controlled Access	387	(7)
IEEE 802.5: The Token Ring	387	(3)
IEEE 802.4: The Token Bus	390	(4)
Joining LANs	394	(5)
Bridges	394	(1)
Routers	395	(1)
Higher-Layer Gateways	396	(1)
Application Gateways	396	(1)
Summary	397	(1)
Exercises	397	(2)
Bridges Between LANs	399	(14)
Transparent or Spanning Tree Bridges	399	(7)
Sample Connections	401	(2)
Spanning Tree Diagram	403	(3)
Source Routing Bridges	406	(3)
SRT Bridges	409	(1)
SLIP and PPP	410	(1)
Vulnerability and Privacy Issues	411	(2)
Summary	411	(1)
Exercises	412	(1)
Logical Link Control and the Physical Layer	413	(12)
The Data Link Layer: Logical Link Control	414	(6)
Framing	414	(1)
Error Control	415	(4)
Flow Control	419	(1)
Link Management	419	(1)
Synchronous and Asynchronous Transfer	420	(1)
The Physical Layer	420	(5)
High-Speed Transmission	421	(2)
Summary	423	(1)
Exercises	423	(2)
A. Internet Archive Server	425	(4)
B. A Review of HTML	429	(14)
B.1 Why a Markup Language	430	(1)
B.2 Simple Formatting	430	(4)
B.3 Links and Anchors	434	(3)
B.4 Images	437	(2)
B.5 Tables	439	(4)
Bibliography	443	(2)
Index	445