Chapter1: INTRODUCTION

DATA COMMUNICATION

Components

NETWORKS

Distributed Processing

Network Criteria

Applications

PROTOCOLS AND STANDARDS

Protocols

Standards

STANDARDS ORGANIZATIONS

Standards Creation Committees

Forums

Regulatory Agencies

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter2: BASIC CONCEPTS

LINE CONFIGURATION

Point-to-point

Multipoint

TOPOLOGY

Mesh

Star

Tree

Bus

Ring

Hybrid Topologies

TRANSMISSION MODE

Simplex

Half-Duplex

Full-Duplex

CATEGORIES OF NETWORKS

Local Area Network(LAN)

Metropolitan Area Network(MAN)

Wide Area Network(WAN)

INTERNETWORKS

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter3: THE OSI MODEL

THE MODEL

Layered Architecture

FUNCTIONS OF THE LAYERS

Physical Layer

Data Link Layer

Network Layer

Transport Layer

Session Layer

Presentation Layer

Application Layer

Summary of Layer Functions

SUMMARY

Multiple Choice

PRACTICE SET

Exercises

Chapter4: SIGNALS

ANALOG AND DIGITAL

APERIODIC AND PERIODIC SIGNALS

Periodic Signals

Aperiodic Signals

ANALOG SIGNALS

Simple Analog Signals

Complex Signals

Frequency Spectrum and Bandwidth

DIGITAL SIGNALS

Amplitude,Period,and Phase

Decomposition of a Digital Signal

Medium Bandwidth and Significant Bandwidth

Medium Bandwidth and Data Rate:Channel Capacity

Use of Analog Signals to Transmit Digital Data

MATHEMATICAL APPROACH(OPTIONAL)

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter5: ENCODING

DIGITAL-TO-DIGITAL ENCODING

Unipolar

Polar

Bipolar

ANALOG-TO-DIGITAL ENCODING

Pulse Amplitude Modulation(PAM)

Pulse Code Modulation(PCM)

Sampling Rate

DIGTAL-TO-ANALOG ENCODING

Aspects of Digital-to-Analog Encoding

Amplitude Shift Keying(ASK)

Frequency Shift Keying(FSK)

Phase Shift Keying(PSK)

Quadrature Amplitude Modulation(QAM)

Bit/Baud Comparison

ANALOG-TO-ANALOG ENCODING

Amplitude Modulation(AM)

Frequency Modulation(FM)

SUMMARY

Phase Modulation(PM)

PRACTICE SET

Multiple Choice

Exercises

Chapter6: TRANSMISSION OF DIGITAL DATA:INTERFACES AND MODEMS

DIGITAL DATA TRANSMISSION

Parallel Transmission

Serial Transmission

DTE-DCE INTERFACE

Data Terminal Equipment(DTE)

Data Circuit-Terminating Equipment(DCE)

Standards

EIA-232Interface

EIA-449

OTHER INTERFACE STANDARDS

EIA-530

X.21

MODEMS

Transmission Rate

Modem Standards

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter7: TRANSMISSION MEDIA

GUIDED MEDIA

Twisted-Pair Cable

Coaxial Cable

Optical Fiber

UNGUIDED MEDIA

Radio Frequency Allocation

Propagation of Radio Waves

Terrestrial Microwave

Satellite Communication

Cellular Telephony

PERFORMANCE

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter8: MULTIPLEXING

MANY TO ONE/ONE TO MANY

TYPES OF MULTIPLEXING

Frequency-Division Multiplexing(FDM)

Time-Division Multiplexing(TDM)

Inverse Multiplexing

MULTIPLEXING APPLICATION:THE TELEPHONE SYSTEM

Common Carrier Services and Hierarchies

Analog Services

Digital Services

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter9: ERROR DETECTION AND CORRECTION

TYPES OF ERRORS

Multiple-Bit Error

Single-Bit Error

Burst Error

DETECTION

Redundancy

Vertical Redundancy Check(VRC)

Longitudinal Redundancy Check(LRC)

Cyclic Redundancy Check(CRC)

Checksum

ERROR CORRECTION

Single-Bit Error Correction

Hamming Code

Multiple-Bit Error Correction

SUMMARY

Multiple Choice

PRACTICE SET

Exercises

Chapter:10 DATA LINK CONTROL

LINE DISCIPLINE

ENQ/ACK

FLOW CONTROL

Stop-and-Wait

Sliding Window

ERROR CONTROL

Automatic Repeat Request(ARQ)

Stop-and-Wait ARQ

Sliding Window ARQ

SUMMARY

Multiple Choice

PRACTICE SET

Exercises

Chapter11: DATA LINK PROTOCOLS

ASYNCHRONOUS PROTOCOLS

XMODEM

YMODEM

ZMODEM

BLAST

Kermit

SYNCHRONOUS PROTOCOLS

CHARACTER-ORIENTED PROTOCOLS

Binary Synchronous Communication(BSC)

BSC Frames

Data Transparency

BIT-ORENTED PROTOCOLS

HDLC

Frames

More about Frames

Link Access Procedures

SUMMARY

PRCATICE SET

Multiple Choice

Exercises

Chapter12: LOCAL AREA NETWORKS

PROJECT802

MAC

Protocol Data Unit(PDU)

LLC

IEEE802.1

ETHERNET

Access Method:CSMA/CD

Addressing

Electrical Specification

Frame Format

Implementation

TOKEN BUS

TOKEN RING

Access Method:Token Passing

Addressing

Electrical Specification

Frame Formats

Implementation

Access Method:Token Passing

FDDI

Addressing

Electrical Specification

Frame Format

Implementation:Physical Medium Dependent(PMD)Layer

COMPARISON

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter13: METROPOLITAN AREA NETWORKS

IEEE802.6

Access Method:Dual Bus

Distributed Queues

Ring Configuration

Operation:DQDB Layers

Implementation

SMDS

Connection and Access

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter14: SWITCHING:A NETWORK LAYER FUNCTION

CIRCUIT SWITCHING

Space-Division Switches

Time-Division Switches

Space-and Time-Division Switching Combinations

PACKET SWITCHING

Datagram Approach

Virtual Circuit Approach

MESSAGE SWITCHING

NETWORK LAYER

Connection-Oriented and Connectionless Services

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter15: INTEGRATED SERVICES DIGITAL NETWORK(ISDN)

SERVICES

Bearer Services

HISTORY

Voice Communication over Analog Networks

Teleservices

Supplementary Services

Voice and Data Communication over Analog Networks

Analog and Digital Services to Subscribers

Integated Digital Network(IDN)

Integrated Services Digital Network(ISDN)

SUBSCRIBER ACCESS TO THE ISDN

B Channels

D Channels

H Channels

User Interfaces

Functional Grouping

THE ISDN LAYER

Reference Points

Physical Layer

Data Link Layer

Network Layer

BROADBAND ISDN

Services

Physical Specifications

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter16:X.25

X.25 LAYERS

Network Layer

Physical Layer

Data Link Layer

PACKET LAYER PROTOCOL

Information Pacdets

Control Packets

Complete Packet Sequence

Virtual Channel ID Numbers

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter17:FRAME RELAY

FRAME RELAY LAYERS

Physical Layer

Data Link Layer

FRAME RELAY OPERATION

Relay

Switching

Congestion Control

IMPLEMENTATION

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter18: ATM

DESIGN GOALS

Packet Networks

Mixed Network Traffic

Cell Networks

Additional Advantages of ATM

ATM TOPOLOGY

ATM PROTOVOL ARCHITECTURE

Application Adaptation Layer(AAL)

ATM Layer

Phvsical Layer

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter19:SONET/SDH

SYNCHRONOUS TRANSPORT SIGNALS

PHYSICAL CONFIGURATION

SONET Devices

Section Layer

Photonic Layer

Sections,Lines,and Paths

SONET LAYERS

Line Layer

Path Layer

Device-Layer Relationships

THE SONET FRAME

Frame Format

Section Overhead

Line Overhead

Path Overhead

Virtual Tributaries

Trpes of VTs

MULTIPLEXING STS FRAMES

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter20: NETWORKING AND INTERNETWORKING DEVICES

REPEATERS

Not an Amplifier

BRIDGES

Types of Bridges

ROUTERS

Routing Concepts

GATEWAYS

ROUTING ALGORITHMS

Distance Vector Routing

Link State Routing

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter21: TRANSPORT LAYER

DUTIES OF THE TRANSPORT LAYER

End-to-End Delivery

Addrseeing

Reliable Delivery

Flow Control

Multiplexing

CONNECTION

Connection Establishment

Transport Classes

Connection Termination

THE OSI TRANSPORT PROTOCOL

Transport Protocol Data Unit(TPDU)

Connection-Oriented and Connectionless Services

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter22: UPPER OSI LAYERS

SESSION LAYER

Session and Transport Interaction

Synchronization Points

Session Protocol Data Unit

Translation

PRESENTATION LAYER

Encryption/Decryption

Authentication

Data Compression

APPLICATION LAYER

Message Handling System(MHS)

File Transfer,Access,and Management(FTAM)

Virtual Terminal(VT)

Directory Services(Ds)

Common Management Intormation Protocol(CMIP)

SUMMARY

PRACTICE SET

Multiple Choice

Exercises

Chapter23: TCP/IP

OVER VIEW OF TCP/IP

TCP/IP and the Internet

TCP/IP and OSI

Encapsulation

NETWORK LAYER

Intermetwork Protocol(IP)

Other Protocols in the Network Layer

TRANSPORT LAYER

User Datagram Protocol(UDP)

Transmission Control Protocol(TCP)

APPLICATION LAYER

Domain Name System(DNS)

TENET

File Transfer Protocols

File Access Using NFS and RPC

Electronic Mail:SMTP

Simple Network Management Protocol(SNMP)

Gopher

Archie

Veronica

Wide Area Information Service(WAIS)

Hypertext Transfer Protocol(HTTP)

WORLD WIDE WEB (WWW)

Uniform Resource Locator(URL)

Browser Architecture

SUMMARY

Multiple Choice

PRACTICE SET

Exercises

AppendixA: ASCII AND EBCDIC CODES

AppendixB: NUMBERING SYSTEMS AND TRANSFORMATION

AppendixC: REPRESENTATION OF BINARY NUMBERS

AppendixD: ONE’S COMPLEMENT ARITHMETIC FOR CHECKSUM CALCULATION

AppendixE: FOURIER ANALYSIS

AppendixF: HARDWARE EQUIPMENT FOR ERROR DETECTION

AppendixG: HUFFMAN CODING

AppendixH: IP VERSION 6

ACRONYMS

GLOSSARY

REFERENCES

INDEX