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More on Networking
and Exam Preparation
Lateral Thinking Puzzle
“A woman comes home with a bag of
groceries, gets the mail, and walks into the
house. On the way to the kitchen, she
goes through the living room and looks at
her husband, who had blown his brains out.
She then continues to the kitchen, puts
away the groceries, and makes dinner.”
Housekeeping
Reminders

Select your topic for IT Review by Sunday
“Claim” your topic by editing your page

http://itec200itreview.wikidot.com
No duplicates allowed


By Mon next week (6/9), I will let you know if
your topic is NOT okay
Article & Presentation due Thu Jun 26th
Housekeeping
Be careful! Proper referencing and
quoting…

http://itec200.wikidot.com/writing
Making a Claim? You must back it up.

“..software development is better for
business...better software…quicker pace”
Exam Overview
http://itec200.wikidot.com/exam
Quiz Bowl Time!
Round One (True/False)
1) Information systems are located inside
organizations and among organizations
2) Data has meaning and value to a recipient
3) Application software can be run on computer
hardware without systems software
4) Binary data consists of 0’s, 1’s, and 9’s
5) When various copies of the data agree, this is
an example of data consistency
Round Two (Multiple Choice)
1)
Each site on the Internet gets an assigned address, which
is a(n) _____.
a) TCP address, b) IP address, c) URL address
2)
The consumer side of Amazon.com is an example of:
a) Supply Chain Mangement (SCM), b) Enterprise
Resource Planning (ERP), c) Electronic Commerce
3)
In the data hierarchy, the smallest element is the _____:
a) field, b) bit, c) byte
4)
_____ consists of the devices which accept data and
information, process them, and display them.
a) networks, b) hardware, c) software
Round Three (Short Answer)
1)
Give an example of a Supply Chain.
2)
What is the relational database model?
Round Four (Tech Scenario)
Marriott International, Inc. (NYSE:MAR) today announced that it has begun testing mobile wireless checkin for Microsoft’s Windows Mobile®-powered devices on end-to-end Intel Architecture for a select group of
travelers to Redmond (Wash.) Marriott Town Center.
In a collaborative effort with Intel® Solution Services and Microsoft®, Marriott is working toward
implementing a mobile wireless check-in process that is convenient and easy for guests to use. During
testing, guests with Microsoft Windows Mobile-powered Smartphones–running the PocketPC Platform–
can simply download and install Marriott’s seamless mobility software. Using the Internet, they can then
connect securely to the Redmond Marriott Town Center hotel’s property management system and check in
to their room while in transit to the hotel. Guests will also be able to change room types, receive welcome
information and reconfirm their room rates. When they arrive at the hotel, guests retrieve their room keys
from a conveniently located automated key dispenser in the lobby.
Critical to the test is innovative software developed by Intel Solution Services to Marriott’s requirements
that enables guests to check-in while in motion and eliminates the need to restart the check-in process,
even if the wireless signal is lost in transit. Information entered by travelers will be automatically restored
when the signal is re-established. A future benefit of this project will also enable guests to check in from
their office PCs and laptops.
1.
A smartphone is an example of an input device (true/false)
2.
The PocketPC Platform is an example of a (1) output device (2) operating system (3) hardware
3.
The automated key dispenser in the lobby is an example of software (true/false)
4.
The software used for the check-in process is (either) application software (or) systems
software
5.
Check-in "while in motion" is an example of a _____ network (fill-in-the-blank)
Basic Network Anatomy
A computer network is any system of two
or more computers that are linked together
Basic Network Anatomy
Protocol is a set of rules for the exchange of data
between a terminal and a computer or between
two computers (e.g. TCP/IP = Internet Protocol)
In a local area network (LAN): computers are
physically close to each other, usually in the same
building
In a wide area network (WAN): computers are
located anywhere
© 2006 Prentice-Hall, Inc.
Basic Network Anatomy
Broadband connection—a connection with
high bandwidth
DSL uses standard phone lines and is provided by
phone companies in many areas
Cable modems provide fast network connections
through cable television networks in many areas
High-speed wireless connections can connect
computers to networks using radio waves rather
than wires
Satellite dishes can deliver fast computer network
connections as well as television programs
© 2006 Prentice-Hall, Inc.
Client-Server vs. Peer-to-Peer (p2p)
Client-Server
Peer-to-Peer (p2p)
Basic Network Anatomy
Specialized Network: GPS
Global Positioning System (GPS)
Specialized network developed by
U.S. Department of Defense
Includes 24 satellites that circle the Earth
Each satellite contains a computer, an atomic
clock, and a radio
On the ground, a GPS receiver can use
signals broadcast by three or four visible
satellites to determine its position
© 2006 Prentice-Hall, Inc.
Wireless
A World Without Wires
In a wireless computer network each
node has a tiny radio transmitter
connected to its network port
Sends and receives data through the air
rather than through cables
Computers are linked within a building or
cluster of buildings
Each computer and peripheral is an
individual node on the network
A World Without Wires
Wi-Fi, or 802.11x, is a wireless multiband LAN
technology for computers
Built on Ethernet’s data packets and Internet
protocols (TCP/IP)
Available in homes, public buildings, and
neighborhoods
© 2006Prentice-Hall, Inc.
A World Without Wires
Wi-MAX, or 802.16, is a wireless technology for
computers that can span large(r) distances at
higher bandwidths
aka “Wireless Broadband”
“…the biggest zero billion dollar market known
to telecom.”
“…Alcatel-Lucent research center successfully
completes first field trial of advanced WiMAX
technology in India…”
© 2006Prentice-Hall, Inc.
Wireless Cellular Networks
“3G” wireless:




Evolved from 1G (analog) and 2G (digital)
Designed to support traditional (voice) as well
as multimedia (non-voice) forms of data
Provides for wide-area mobile communications
using a worldwide standard
Is a broadband, packet-based wireless
transmission
700 MHz Spectrum auction:
nationwide wireless broadband.
Bluetooth
Another type of wireless technology is Bluetooth
Overcomes differences between mobile phones,
handheld computers, and PCs, making it possible for all
of these devices to communicate with each other
regardless of operating system
Firewalls
Firewalls
Routers
Routers
Internet
(Untrusted)
Internal
Networks
(Trusted)
Firewalls – Internal and
External
FIREWALL
Internal
Networks
Internet
FIREWALL
Research Dept.
Network
Projects Database
Server
Virtual Private
Networks (VPN)
Virtual Private Networking –
VPN
VPN is a private network that utilizes a
common carrier’s telecommunications
infrastructure
Most frequently has these uses:

Secure remote access, Intranet access,
Extranet access
In effect, results in businesses’ outsourcing
their networking infrastructure
Firewalls – Internal and
External
VPN
FIREWALL
Internal
Networks
Internet
VPN
FIREWALL
Research Dept.
Network
Projects Database
Server
What Do You Know?
1 Which of the following statements is true ?
A)
Wireless technologies are spreading rapidly.
B)
Wireless technologies are spreading slowly.
C)
Wireless technologies are relatively static.
D)
Wireless technologies are declining rapidly.
E)
Wireless technologies are declining slowly.
1 Which of the following statements is true ?
A)
Wireless technologies are spreading rapidly.
B)
Wireless technologies are spreading slowly.
C)
Wireless technologies are relatively static.
D)
Wireless technologies are declining rapidly.
E)
Wireless technologies are declining slowly.
2 The use of cell phones to surf the web and
purchase things is driven by which of the
following factors?
A)
widespread availability of mobile devices
B)
the cell phone culture
C)
declining prices
D)
bandwidth improvement
E)
all of the above
2 The use of cell phones to surf the web and
purchase things is driven by which of the
following factors?
A)
widespread availability of mobile devices
B)
the cell phone culture
C)
declining prices
D)
bandwidth improvement
E)
all of the above
3 Which of the following are characteristics
of packets?
A) contains addresses of sending and receiving
machines
B) contains sequence number relative to other
packets
C)
travel independently across networks
D)
may arrive out of sequence
E)
all of the above
3 Which of the following are characteristics
of packets?
A) contains addresses of sending and receiving
machines
B) contains sequence number relative to other
packets
C)
travel independently across networks
D)
may arrive out of sequence
E)
all of the above
4
_____ allows different devices running
different operating systems to communicate.
A)
Bluetooth
B)
wireless application protocol
C)
short message service
D)
wi-fi
E)
global positioning system
4
_____ allows different devices running
different operating systems to communicate.
A)
Bluetooth
B)
wireless application protocol
C)
short message service
D)
wi-fi
E)
global positioning system
5 Which of the following are advantages of
computer networks?
A)
enable organizations to be more flexible
B) enable companies to share hardware, computer
applications, and data
C) enable geographically dispersed employees to
work together
D) provide a critical link between businesses and
their customers
E)
all of the above
5 Which of the following are advantages of
computer networks?
A)
enable organizations to be more flexible
B) enable companies to share hardware, computer
applications, and data
C) enable geographically dispersed employees to
work together
D) provide a critical link between businesses and
their customers
E)
all of the above
This Week
SS: Intro to Networking Self-Study & Collaboration Self-Study
LAB4: Advanced Database
HW: Database Queries (HW2) and Database Design (HW3)
IT REVIEW: Topic Selection (update via wiki; no duplicates)
Next Week
LECTURE: No Lecture!
SS: Intro to Excel Self-Study
LAB5: Financial Modeling in Excel (warning: long lab!)
LAB6: Advanced Excel Modeling
LAB7: Excel Pivot Tables & Macros
Following Week
EXAM! Based on Reading & Lectures & Labs
LECTURE: No Lecture!
SS: Presentation Skills Self-Study
LAB8: Modeling and Diagrams
HW4: Financial Modeling in Excel (based on LAB5)
HW5: Financial Modeling in Excel (based on LAB6)
Final Week of Class
HW8: Modeling and Diagrams (based on LAB8)
ITR: Group Presentations & Article