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Key termS anD ConCeptS Using Your Knowledge 275

10/100/1000 Ethernet 247 Internet service provider (ISP) 248 Simple Mail Transfer Protocol
Bluetooth 247 Intranet 246 (smtp) 257
Cable line 249 IP address 250 Small office/home office
Carrier 250 IPv4 251 (SOHO) 246
Cloud 239 IPv6 251 Software as a service (SaaS) 259
Commerce server 253 Local area network (LAN) 246 TCP/IP protocol architecture 256
Content delivery network (CDN) 260 Net neutrality 250 Telediagnosis 268
Database tier 252 Network 243 Telelaw enforcement 268
Digital subscriber line (DSL) 248 Over the Internet 241 Telesurgery 268
Domain name 251 Packet 250 Text mining 272
Elastic 239 Packet sniffers 272 The Internet 246
Encapsulated 255 Peering 250 Three-tier architecture 252
Ethernet 247 Personal area network (PAN) 246 Tunnel 263
File Transfer Protocol (ftp) 257 Platform as a service (PaaS) 259 URL (Uniform Resource
Hop 249 Pooled 240 Locator) 252
https 257 Private cloud 264 User tier 252
Hypertext Transfer Protocol (http) 257 Private IP address 250 Virtual private cloud (VPC) 265
ICANN (Internet Corporation for Protocol 246 Virtual private network
Assigned Names and Numbers) 250 Public IP address 250 (VPN) 263
IEEE 802.3 protocol 247 Remote action system 268 WAN wireless 249
IEEE 802.11 protocol 247 Server tier 252 Web page 253
Infrastructure as a service (IaaS) 259 Service-oriented architecture Web servers 253
Internet 246 (SOA) 253 Wide area network (WAN) 246

MyMISLab ™

To complete the problems with the , go to EOC Discussion Questions in the MyLab.

USinG y oUr KnowleDGe

6-1. Search the web for TCO (Total Cost of Ownership). 6-3. Suppose you manage a group of seven employees in
Explain the TCO model. How can TCO model help orga- a small business. Each of your employees wants to be
nizations decide whether to buy the software or obtain connected to the Internet. Consider two alternatives:
it from the cloud vendor? Alternative A: Each employee has his or her own de-
vice and connects individually to the Internet.
6-2. Apple invested more than $1B in the North Alternative B: The employees’ computers are con-
Carolina data center mentioned in Q6-1. For Apple nected using a LAN, and the network uses a single
to spend such a sum, it must perceive the iCloud device to connect to the Internet.
as being a key component of its future. Using the a. Sketch the equipment and lines required for
principles discussed in Q3-7 of Chapter 3, explain eachalternative.
all the ways you believe the iCloud will give Apple b. Explain the actions you need to take to create each
a competitive advantage over other mobile device alternative.
vendors.
c. Which of these two alternatives would you
recommend?