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Oct 26, 2013 (3 years and 11 months ago)

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Chapter 3

Hardware, Software, and Networks

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Publishing as Prentice Hall

3
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1

Learning Objectives

Q1. What do business professionals need to
know about computer hardware?

Q2. What do business professionals need to
know about software?

Q3. What type of computer networks exist?


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Publishing as Prentice Hall

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-
2

Learning Objectives

Q4. What do business professionals need to
know about the Internet?

Q5. What happens on a typical web server?

Q6. How do organizations benefit from virtual
private networks (VPNs)?


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What do business professionals need
to know about computer hardware?


Categories of Computer Hardware


Input


Output


Process


Storage




FIGURE 3
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1 Categories of Computer Hardware


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What do business professionals need
to know about computer hardware?


Computer Data


Bits (Binary digits)


Bytes







FIGURE 3
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3 Units of Data for Computer Memory



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What do business professionals need
to know about computer hardware?


How does a computer work?







FIGURE
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Computer Components




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What do business professionals need
to know about computer hardware?


Why does a manager care how a computer
works?


Performance


Memory


Volatile


Non
-
volatile




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What do business professionals need
to know about computer hardware?


What is the difference between a client and a
server?


Server farm







FIGURE 3
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5 Client and Server Computers



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What do business professionals need
to know about computer hardware?


Categories of computer hardware


Computer data


How computer works and why a manager
should care


Differences between a client and a server



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What do business professionals need
to know about software?


Software categories


Operating system


Applications programs






FIGURE 3
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7 Types of Software


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What do business professionals need
to know about software?


What are the major operating systems?


Non
-
mobile client operating systems


Mobile client operating systems


Server operating systems


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What do business professionals need
to know about software?


What are the major operating systems?








FIGURE 3
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8 Major Operating Systems


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What are the major operating systems
?

Processing Systems for TPS Applications


IBM X Systems


Midrange systems


IBM Z Systems


Mainframe systems


Operating
System


Mainframes

8/22/2011

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What do business professionals need
to know about software?


Own versus License


Cloud computing


Virtualization


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What do business professionals need
to know about software?


What Types of Applications Exist, and How Do
Organizations Obtain Them?


Horizontal market application software


Vertical market application software


Client
-
server application software


Thin client v. thick client

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What do business professionals need
to know about software?


How do organizations acquire application
software?


Off the shelf


Custom developed


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What do business professionals need
to know about software?


Is open source a viable alternative?


Source code


Machine code


Closed source


Open source

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What do business professionals need
to know about software?


Operating Systems


Application Programs


Open Source


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What Type of Computer Networks
Exist?


Computer Network


Local Area Network (LAN)


Wide Area Network (WAN)


Internets


“the Internet”

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What Type of Computer Networks
Exist?


What are the components of a LAN?


Small office/Home office (SOHO LAN)


Wired connectivity


Wireless connections

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What Type of Computer Networks
Exist?


What are the components of a LAN?


LAN protocols


Institute for Electronic and Electrical Engineers
(IEEE)


IEEE 802.3 (wired Ethernet)


IEEE 802.11 (wireless)


Bluetooth

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What Type of Computer Networks
Exist?


What are the alternatives for connecting to a
WAN?


Internet Service Provider (ISP)


Digital Data


Analog Data

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What Type of Computer Networks
Exist?


What are the alternatives for connecting to a
WAN?


Modems


DSL


Cable


Wireless



FIGURE 3
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15 Signal Modulation for Accessing the Internet

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What Type of Computer Networks
Exist?


Computer Network


Local Area Network (LAN)


Wide Area Network (WAN)


Internets


“the Internet”

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What do business professionals need
to know about the Internet?


Internet’s network of networks


Consists of tens of thousands of LANs and
WANs


TCP/IP architecture


Application layer protocols


TCP and IP protocols


IP addressing


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What do business professionals need
to know about the Internet?


TCP/IP architecture








FIGURE 3
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17 TCP/IP Architecture


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8/22/2011

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TCP Layered Communication

Internet

App

DL

Trans

Phy

Source

Host

Destination

Host

Switch

1

Switch

2

Router

1

Switch

3

Router

2

Source and

Destination

Hosts Have

5 Layers

Switches

Have Two

Layers

---

Each Switch

Port

Has One

Layer (1)

Routers

Have Three

Layers

---

Each Router

Port

Has Two

Layers (1&2)

TCP

IP

What do business professionals need
to know about the Internet?


Application layer protocols


Hyper Text Transport Protocol (HTTP)


Secured Hyper Text Transport Protocol (HTTPS)


Simple Mail Transfer Protocol (SMTP)


File Transfer Protocol (FTP)

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What do business professionals need
to know about the Internet?


TCP and IP protocols


Transmission Control Protocol (TCP)


Internet Protocol (IP)

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What do business professionals need
to know about the Internet?


IP addressing


Use of Private IP Addresses


Eg. 165.193.123.253


Public IP Addresses and Domain Names


Uniform Resource Locator (URL)


Eg. http://www.godaddy.com

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What do business professionals need
to know about the Internet?


Internet’s network of networks


Consists of tens of thousands of LANs and
WANs


TCP/IP architecture


Application layer protocols


TCP and IP protocols


IP addressing


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31

What happens on a typical web
server?


Web storefront


Three
-
Tier architecture


Hyper Text Markup Language (HTML)


eXtensible Markup Language (XML)


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What happens on a typical web
server?


Web storefront



server on the web from which you can buy
products


Eg
: www.REI.com




FIGURE
3
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19 Sample
Retail Web

Page

Source
: Used with permission

of REI and
Black Diamond.

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What happens on a typical web
server?


Three
-
Tiered architecture


User tier


Server tier


Web page


Web farm


Database tier

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34

What happens on a typical web
server?


Hyper Text Markup Language (HTML)


HTML tags <>


Hyperlinks (
href
)






FIGURE
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Example HTML


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What happens on a typical web
server?


eXtensible Markup Language (XML)


Adobe Flash


Microsoft Silverlight


HTML5


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Publishing as Prentice Hall

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36

What happens on a typical web
server?


Web storefront


Three
-
Tier architecture


Hyper Text Markup Language (HTML)


eXtensible Markup Language (XML)


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37

How do organizations benefit from
virtual private networks (VPNs)?


Virtual Private Network (VPN)


Virtual


Tunnel


Security


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Ethics Guide


Churn and Burn


Mark’s conspiracy theory


Does it have merit?


Discussion Questions



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Conclusion

Q1. What do business professionals need to
know about computer hardware?

Q2. What do business professionals need to
know about software?

Q3. What type of computer networks exist?



Copyright © 2013 Pearson Education, Inc.
Publishing as Prentice Hall

3
-
40

Conclusion

Q4. What do business professionals need to
know about the Internet?

Q5. What happens on a typical web server?

Q6. How do organizations benefit from virtual
private networks (VPNs)?


Copyright © 2013 Pearson Education, Inc.
Publishing as Prentice Hall

3
-
41

Copyright © 2013 Pearson Education, Inc.
Publishing as Prentice Hall

3
-
42