DISTRIBUTED DATABASE SYSTEMS - Database Design and Development: An Essential Guide for IT Professionals - page 556

LAN WAN

• Covers short distances
• Simple Protocol
• Network managed locally
• Regular topologies
• Links collaborating systems
• Low data rate
• Low error rate
• Broadcasting common

• Covers long distances
• Complex Protocol
• Network managed by carriers
• Irregular topologies
• Links disparate systems
• High data rate
• High error rate
• Point-to-point connections

Figure 18-7 LAN and WAN: features.

New York London New York London

2 2

1 1

4 3

Paris Hong Kong Paris Hong Kong

Fully Connected Partially Connected

2

1 2

1 2

1

4

4 3

3

4

3

BUS STAR RING

Figure 18-8 Network configurations.