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Chapter 7 Telecommunications, the Internet, and Wireless Technology 315

Key Terms

3G Networks, 307 Personal area networks (PANs), 308
4G networks, 307 Protocol, 284
Bandwidth, 288 Radio frequency identification (RFID), 310
Blog, 304 Router, 281
Blogosphere, 304 RSS, 304
Bluetooth, 308 Search engines, 300
Broadband, 280 Search engine marketing, 302
Cable Internet connections, 288 Search engine optimization (SEO), 302
Chat, 294 Semantic Web, 306
Digital subscriber line (DSL), 288 Shopping bots, 304
Domain name, 289 Smartphones, 307
Domain Name System (DNS), 289 Social networking, 305
E-mail, 294 Social search, 303
File Transfer Protocol (FTP), 294 Software-defined networking, 281
Hertz, 287 Switch, 281
Hotspots, 310 T1 lines, 288
Hubs, 281 Telnet, 294
Hypertext Transfer Protocol (HTTP), 299 Transmission Control Protocol/Internet Protocol (TCP/IP),
Instant messaging, 294 284
Internet Protocol (IP) address, 288 Unified communications, 298
Internet service provider (ISP), 288 Uniform resource locator (URL), 299
Internet2, 291 Virtual private network (VPN), 298
IPv6, 291 Voice over IP (VoIP), 295
Local area network (LAN), 286 Web 2.0, 304
Metropolitan area network (MAN), 287 Web 3.0, 306
Microblogging, 304 Web site, 299
Modem, 285 Wide area networks (WANs), 287
Network operating system (NOS), 281 Wi-Fi, 309
Packet switching, 283 Wiki, 305
Peer-to-peer, 286 WiMax, 310
Wireless sensor networks (WSNs), 313

Review Questions

1. What are the principal components of telecom- • Define a LAN, and describe its components
munications networks and key networking and the functions of each component.
technologies?
• Name and describe the principal network
• Describe the features of a simple network and topologies.
the network infrastructure for a large
3. How do the Internet and Internet technology
company.
work, and how do they support communication
• Name and describe the principal technologies and e-business?
and trends that have shaped contemporary
• Define the Internet, describe how it works,
telecommunications systems.
and explain how it provides business value.
2. What are the main telecommunications • Explain how the Domain Name System (DNS)
transmission media and types of networks? and IP addressing system work.
• Name the different types of physical • List and describe the principal Internet
transmission media and compare them in services.
terms of speed and cost.

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