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CIS 321 Midterm
Chapters 1-6, and Tool Kit C; exempt 5
44
Computer Networking
03/15/2012

Additional Computer Networking Flashcards

 


 

Cards

Term
How before What
Definition
The greatest risk in launching a new IS occurs when a company tries to decide how the system will be constructed before determining what the system needs to do.
Term
Enterprise Application
Definition
a company-wide application; can include payroll systems, order processing systems, and company communication networks 
Term
Moore's Law
Definition
the number of transistors on an integrated circuit would double about every 24 months
Term
Legacy System
Definition
Older systems that may be outdated
Term

Business Process Modeling Notation

(BPMN)

Definition
a standard language for computer-based modeling tools; includes various shapes and symbols to represent events, processes, and workflows; also includes multi-purpose graphical applications (Visio)
Term
Strategic Planning
Definition

the process of identifying long-term organizational goals, strategies, and resources; SWOT analysis examines a firms technical, human, and financial resources; no standard approach

1) Mission Statement, 2) identify goals, 3)short-term objectives, 4) outcome for stakeholders

Term

Electronic Data Interchange

(EDI)

Definition
makes relationships with suppliers critically important; Enables JIT
Term

Just-In-Time inventory systems

(JIT)

Definition
rely on computer-to-computer data exchange to minimize unnecessary inventory; purpose is to provide the right product at the right place and time
Term

Customer Relationship Management

(CRM)

Definition
integrates all customer-related events and transactions, including marketing, sales, and customer service activities
Term
Operational Feasability
Definition
a proposed system will be used effectively after it has been developed; management support, workforce reduction, training users, user involvement, new demands on users, 
Term
Technical Feasability
Definition
technical resources needed to develop, purchase, install, or operate the system; company has necessary hardware, software, and resources, need technical expertise, sufficient capacity, prototype required, 
Term
Economic Feasability
Definition
projected benefits of the proposed system outweigh the estimated costs, including on-going support and maintenance; tangible & intangible benefits
Term
Schedule Feasibility
Definition
project can be implemented in an acceptable time frame
Term
Tangible Benefits
Definition
can be measure in dollars; new scheduling system to reduce overtime, package tracking system, inventory control system
Term
Intangible Benefits
Definition
advantages that are difficult to measure in dollars, but are important to the company; user-friendly system, sales tracking system, new website
Term
Successful Project
Definition
must be completed on time, within budget, and deliver quality products that satisfy users and meet requirements
Term
Project Manager monitoring
Definition
guiding, supervising, and coordinating the project teams workload; monitor the progress, evaluate the results, and take corrective action when necessary to control project and stay on time
Term

Program Evaluation Review Technique (PERT)/

Critical Path Method (CPM)

Definition
PERT developed by Navy to manage very complex projects; CPM developed by private industry to meet similar needs; bottom-up technique: analyze large, complex problems as a set of individual tasks & an estimate of how long it will take to complete each task
Term
Work Breakdown Structure
Definition
1) list tasks, 2) estimate task durations, 3)identify factors effecting duration, 4) project size, 5)human resources, 5) experience with similar projects, 6) constraints
Term
milestone
Definition
a recognizable reference point that you can use to monitor progress
Term
Systems Analyst Phase
Definition
requirement modeling, data and process modeling, object modeling, consideration to development strategies
Term
user involvement
Definition
usually results in better communication, faster development time, & more satisfied users
Term
primary advantage of RAD
Definition
cut development time and expenses by involving users in every phase of systems development
Term

Functional Decomposition Diagram

(FDD)

Definition
a top-down representation of a function or process; analyst uses FDD's during requirements modeling to model business functions and show how they are organized into low-level process
Term

Unified Modeling Language

(UML) for software systems

Definition
uses object-oriented design concept, but is independent from specific program languages; provides various graphical tools
Term
UML for IS
Definition
starts with an object, that object has attributes and methods, methods receive messages; then it has a class or classes, those classes are put into instances; example is JAVA
Term
Attributes
Definition
characteristics that describe an object
Term
class
Definition
a group of similar objects
Term
instance
Definition
a specific member of a class
Term
inheritance
Definition
objects can inherit, or acquire, certain attributes from other objects
Term
methods
Definition
define specific tasks that an object can perform
Term
superclass
Definition
a class can belong to a general category
Term
symbols for use case
Definition
1 rectangle, multiple ovals, stick figures and arrows
Term
cardinality symbols
Definition
arrows connecting entities with 1-1, 1-M, and M-N relationships. lines of arrows will have tallies or circles, and can be solid or dashed
Term
lifeline symbol
Definition
dashed line; represents time during which object above it is able to interact with the other objects
Term
cloud
Definition
a symbol that indicates a network or internet
Term
service provider
Definition
a firm that offers outsourcing solutions
Term

Application Service Provider

(ASP)

Definition
a firm that delivers a software application or access to an application, by charging a usage or subscription fee
Term
fixed-fee model
Definition
a set fee based on specific levels of service and user support
Term
subscription model
Definition
a variable fee based on the number of users or workstations that have access to the application
Term
usage/transaction model
Definition
variable fee based on the volume of transactions or operations performed by the application
Term
reasons for in-house
Definition
satisfy unique business and security requirements, minimize changes in business procedures and policies, meet constraints of existing systems & technology, develop internal resources and capabilities
Term
Economic Feasibility
Definition
depends on comparison of costs and benefits; if the future benefits outweigh the estimated costs of developing or acquiring a new system
Term

Return on Investment

(ROI)

Definition

a percentage rate that measures profitability by comparing the total net benefits (return) received from a project to the total cost (investment) of the project

 

ROI = (total benefits - total costs) / total costs