test 3 Flashcards
preventive maintenance
requires analysis of areas where trouble is likely to occur.
What measures actual system performance under specific circumstances and is affected by network loads and hardware efficiency.
throughput
The _____ is the configuration of a system documented at the beginning of the project and consists of all necessary system requirements and design constraints.
functional baseline
Differnce between repsonse time and turnaround time?
Response time is the request between system activity and the delivery of the response
Turnaround time is between submtting an information request and getting that fulfilled
The _____ describes a system at the beginning of system operation and includes the results of performance and acceptance tests for the operational system.
product bvaseline
Differential backup
only backs up files that are new or changed since the last full backup.
When a maintenance release methodology is used, all noncritical changes are held until they can be implemented at the ____ _____
same time
What is TCO and how important are forecasts?
Total Cost of Ownership is the estimation of expenses associated with purchasing, deploying, using and retiring a product or piece of equipment.
An accurate forecast of TCO is critical, because nearly 80% of total costs occur after the purchase of the hardware and software.
Capacity planning?
a process that monitors current activity and performance levels, anticipates the future, and forecasts resourced needed.
system changeover?
the process of putting the new information system online and retiring the old system.
During _____, existing data is loaded into the new system.
data conversion
The environment for the actual system operation is called the _____.
operational environment
After a systems analyst documents the system’s requirements, he or she breaks the system down into subsystems and modules in a process called ______
partitioning
_____ is the amount of data that can be transferred in a fixed time period.
Bandwidth
When an individual user works in _____, the workstation performs all the functions of a server by storing, accessing, and processing data as well as providing a user interface.
stand-alone mode
_____ describes the actual network cabling and connections.
Physical topology
In a typical system design specification, the _____ section contains the complete design for a new system, including the user interface, outputs, inputs, files, databases, and network specifications.
system components section
In addition to centralized data processing, the earliest systems performed all data input and output at a central location, often called a _____.
data processing center.
A web-based application _____ many of the connectivity and compatibility problems that typically arise when different hardware environments are involved.
avoids
In contrast to a centralized system, a client/server design ______ applications and data.
separates
A table design that contains a repeating group is called _____.
unnormalized
One type of validity check, called _____ ______ , is a set of rules that avoids data inconsistency and quality problems.
referential integrity
_____ means that a system can be expanded, modified, or downsized easily to meet the rapidly changing needs of a business enterprise.
Scalability
_______ is the process of creating table designs by assigning specific fields or attributes to each table in the database.
normalizaiton
_______ ______ refers to data that a user can view, understand, and access, regardless of how or where that information actually is organized or stored.
Logical storage
_____ protects privacy rights and shields an organization’s proprietary data from theft or unauthorized access.
Output security
A(n) _____ ______ produces one or more lines of output for each record processed.
detail report
Printed output is used in _____ _____, which are output documents that are later entered back into the same or another information system.
turnaround documents
A(n) _____ _____ is a data validation rule that can be used for data items that must have certain values.
validity check
The ______ zone of a source document contains any required signatures.
authorization
A _____ language feature allows users to type commands or requests in normal text phrases.
natural
How much desktop computing power and resources does a traditional systems development environment take up?
Substantial
_____ is a percentage rate that compares the total net benefits received from a project to the total costs of the project.
ROI (Return on Investment)
The _____ of a project is the total value of the benefits minus the total value of the costs, with both costs and benefits adjusted to reflect the point in time at which they occur.
net present value (NPV)
A _____ is a document that describes a company, lists the IT services or products needed, and specifies the features required.
request for proposal (RFP)
A ______ design defines what must take place, not how it will be accomplished. ______ designs do not address the actual methods of implementation.
logical
Typically, a ______design describes the actual processes of entering, verifying, and storing data; the ______layout of data files and sorting procedures; the format of reports; and so on.
physical
A software package developed to handle information requirements for a specific type of business is called a(n) _____.
vertical application
The _____ documents a system at the end of the design phase, identifies any changes since the beginning of the project, and includes testing and verification of all system requirements and features.
allocated baseline
