MIS Test 2 UT

Local Area Network

A network that connects computers that reside in a single geographic location.

Network Interface Card

A hardware component on each device on a network (Comp,Printer) that connects the devices circuitry to the communications line. (Connects circuitry to LAN)

A special purpose computer that receives and transmits data across a network withing

Wireless Network Interface Card

Device that enable wireless networks by communicating w/ wireless access points.

Wide Area Network

A network that connects computers located at different geographic locations

The location at which a line connects to a PSDN network
-think of POP as the phone number and dials to connect to the PSDN

if you don’t have wireless, lets say there was only one cable for internet, point of presence is how many access points there are to get into a network or whatever.

Process used to develop systems

Consists of programs that perform a business function (excel, word)

A WAN connection alternative that uses the internet or a private internet to create the appearance of private to point connections

-VPN uses the public internet to create the appearance of a private connection

A Computer that provides word processing, spreadsheets, database access, and usually a network connection

A computer that provides some type of service, such as hosting a database, running a blog...Server comps are faster, something and more powerful than client computers

Thick: A software app that requires programs other than just the browser requires code on both server and client comp

Thin: Software app that only requires a browser

The process of transforming clear text into coded, unitelligible text for secure storage or communication

o Keys: #’s used to encrypt data
o SSL: secure socket layer a.k.a. TLS
o HTTM: Most secure

Device located between a firms internal and external networks that prevents unauthorized access to or from the internal network

perimeter vs. internal, access control list, packet filtering, examines each part of a message

A program that controls the computers resources:
-Manages content of main memory
-processes keystrokes
-reads and writes disk files

Cost
-initial setup
-operational
-Maintanance

Performance
-speed, Latency, Loss rate

Other
-Growth potential, risk, mangement time?

-Has to be fast
-Should be fail-proof
-Must allow multiple traffic simultaniously
-Cant rely on a: Static Circuit, Type of equipment, OS

-Static HTML pages
-Data Bound Pages
-Data Driven pages
-User generated content

Directs traffic between networks

Physical Address

A small piece of an electronic message that has been divided into chunks. These chunks are sent separately and reassembled at their destination.

IP address used on the internet, such IP add. are assigned to major institutions in blocks

Each IP address is unique across all computers on the internet.

A type of IP add. used within private networks, assigned by the company that operates the private network

A standardized means for coordinating on activity between 2 or more entities

Logical, identifies a unique device on a network

Static: are like google they are unique globally
coded address that never changes

Dynamic: are like laptops on the internet at home or in starbucks
: only available for a specific time (like when you access UT internet.) it gives you a new one every time you log on

5.Application Interoperability of application
4.Transport
Transmission across an Internet
3.Internet

2.Data Link
Transmission across a network
1.Physical

SSID broadcasting
User Account
Encryption
MAC Address filtering

A network of value creating activities

System Analyst
Technical Writer
Consultant
Salesperson
Project Manager

-Unrealistic expectations from business
-Unknown expectations
-Lack of business knowledge within it
-Lack of alignment between business and it
-Difficulty proving the value of it

It is the process used to manage the people, effort, costs, and risks to the IS related project that will work on the IS

-Project late and or were over budget
-IS did not meet business expectations
-IS met expectations but did not get implemented or used

Context Diagram
Data Subjects
Process Def.
Use-Case def
Wireframes

Requirement
Count
Weight factor(complexity)
Time and Resources Estimate

Coordination
Diseconomies of scale
Configuration control
Unexpected events

-Plan for information systems and IT infrastructure
-Develop and adapt information systems and IT infrastructure
-Maintain IS and operate and manage infrastructure
-Protect infrastructure and data

The relationship between cost and time of doing something

By decreasing cost you usually increase time. By increasing cost you usually decrease time but only up to a certain point.
o by hiring laborers to build something for you, you can reach a point where there will be so many working that they interfere with each other and then increase time. This is diseconomies of scale.

An initial plan for the development of an IS

o Project Plan: activities and dependencies, timeline, resources, costs, and risks taken into account.
o Budget
o Project Team: Manager, system analysts, programmers, software testers, and users.
o Deliverables: documents, designs, prototypes, models, ect. Are used to show that a task was accomplished.

IS a hierarchy of the tasks required to complete a project

Hiring another organization to perform a service
(Management advantages)
-Cost reduction
-risk reduction
Loss of control
Benefits outweighed by L.T. costs
Ne easy exit

Sum of all the costs of the system over the life of the system

Department
Project
Direct v. Indirect
Tangible v. Intangible

Tan: computer hardware, software license fees, IT dept. personnel, WAN and ISP communication Fees
(a cost that has monetary value)

Intan: Management reviews lost user time, lost opportunities, customer badwill, drop of employee

(how long it will take for the benefits to pay off the costs.)
4 way box
Tangable and Cost- (Computer hardware software fees
Tan and Benefit- (Labor Savings, Material Savings, Service-Cost Savings)
Intan and Cost- (Man reviews, lost user time, lost opportunities, customer badwill)
Intan and Benif- (Improved Morale, more info, customer goodwill)

Informal
Cost/Benefit Analysis
TCO
Payback
NPV
Return of Inv

Direct Costs are those for activities that benefit specific projects
(costs that can be directly traced to producing specific goods or services. Ex. The meat for hamburger patties for a restaurant.)

Indirect Costs are for those activities or services that benefit more than one project

o Horizontal market: purchased off the shelf, common across all organizations (excel)
o Vertical market: usually can be altered, serves the need of a specific industry ex. Airline
o One of a kind: specific need or purpose ex. IRS

is a digital network communications method that groups all transmitted data, irrespective of content, type, or structure into suitably-sized blocks, called packets. The network over which packets are transmitted is a shared network which routes each packet independently from all others and allocates transmission resources as needed. The principal goals of packet switching are to optimize utilization of available link capacity, minimize response times and increase the robustness of communication.

: mitigation is if the risk actually happens this is what we are going to do?

some tasks must come before other tasks, requirement is dependent on scope tasks, and some things can’t start before others are finished.

o Onshore: is subcontracting a service, such as product design or manufacturing, to a third-party company in the same country.
o Near shore: means sourcing service activities to a foreign, lower-wage country that is relatively close in distance
o Off shore: is the practice of hiring an external organization to perform some business functions in a country other than the one where the products or services are actually developed or manufactured
o Combination: a business practice where a service is performed by both staff from inside an organization and also by an external service provider

o Management advantages: obtain expertise, avoid management problems, free management time
o Cost Reduction: obtain part-time services
o Gain economies of scale
o Risk reduction: Cap financial risk, improve quality, reduce implementation risk

o Loss of control: vendor in driver’s seat
• Technology direction
• Potential loss of intellectual capital
• Product fixes, enhancements in wrong priority
• Vendor management, direction, or identity changes,
• CIO superfluous?
o Benefits outweighed by long-term costs:
• High unit costs, forever
• Paying for someone else’s mismanagement
• In time, outsource vendor is defacto sole source
o No easy exit:
• Critical knowledge in minds of vendors, not employees
• Expensive and risky to change vendors

How do you get types of software applications.
Build
Buy
Or buy with alteration