System Design - midterm

The entry screen on a Web site should be designed to load in ________ seconds (given a 56,000 baud modem) . 10 46 21 14

14

Which of the following is an advantage of the database approach? All of the data are stored in one place. It allows users their own view of the data. Data are more vulnerable to catastrophes. It comes about when attempting to keep the cost of storing the data to a reasonable amount.

All of the data are stored in one place. WRONG

Which section includes information that the systems analyst feels may be of interest to specific individuals? Executive summary Detailed results of systems study Systems analysts' recommendations Appendices

Appendices

Which guideline isn't correct for including effective graphs in a proposal? Choose a style that communicates the intended meaning. Collect graphs together in the appendices. Give the graph a sequential figure number. Label each axis, and any lines, columns, bars, or pieces of the pie of the graph. Include a key to indicate different colored lines, shaded bars, or crosshatched areas.

Collect graphs together in the appendices.

Which of the following reports describe output produced when certain conditions occur? Summary Exception Historical Detailed

Exception

Which type of report prints a line for all records that match a set of conditions? Exception Detailed Selected item Summary

Exception

A Web site has a high degree of ________ if the user stays at the site for a long period of time. Stickiness Persistence Focus Permanence

Focus WRONG

Which order is correct for the analyst to normalize a data structure? I. Remove all repeating groups and identify the primary key. II. Remove any transitive dependencies. III. All partial dependencies are removed and placed in another relation. III - II - I I - II - III III - I - II I - III - II II - I - III

I - III - II

Which order of step is correct for the systems analyst to take in ascertaining hardware and software needs? I. An evaluation of available hardware and software is undertaken. II. All correct computer hardware must be inventoried to discover what is on hand and what is usable. III. Current and future system workloads must be estimated. I ‑ III ‑ II I ‑ II ‑ III II ‑ I ‑ III II ‑ III ‑ I

II ‑ I ‑ III WRONG

Which type of join contains all the records from one table and matching records from the other table? outer inner self derivative indexed

Inner WRONG

Which of the following does Ajax use to modify Web pages? JavaScript server-side scripts hidden fields synchronous transmission protocols

JavaScript

Which graph is used primarily to show change over time? Line graph Column chart Pie chart Bar chart

Line graph

Which of the following is not a technique for overcoming speaking anxiety? Be yourself. Be prepared. Memorize your talk ahead of time. Speak naturally

Memorize your talk ahead of time.

Which leaves a stub behind as a record when separated? Continuous-feed form Multiple-part form All specialty form Perforated form

Perforated form

Which of the following is used to select data that is mutually exclusive? Text area Check box Text box Radio button

Radio button

Which of the following Web form controls has the value defined in the Web form, not visible on the Web form? text boxes text areas input boxes radio buttons

Radio buttons

What is used to show time ordering on a communication diagram? a synchronous arrow a focus of control an asynchronous arrow a sequence number

a sequence number

On an activity diagram, what is used to show partitioning? a synchronization bar a diamond a swimlane a filled-in circle

a swimlane

Hardware options can be considered only when _____ has a good grasp of what kinds of tasks must be accomplished: managers users systems analysts all of the above

all the above

Information needs of users drive the following selection except: computer hardware. systems analysts. data storage media. any commercial off-the-shelf software.

any commercial off-the-shelf software. WRONG

Transaction files: cannot contain several record types. are used to update master files and produce reports. are large files, containing all main information about an entity. are always stored using indexed-sequential organization.

are used to update master files and produce reports.

The process of taking a logical data model and transforming it into a physical model that is efficient for the most often used tasks is called: referential integrity. normalization. denormalization. data warehousing.

denormalization.

Extensible markup language is used to: describe data in a universal language that can be read by anyone with the appropriate translator tools. express how each word, image, and photo is displayed on a Web page. design cascading style sheets. include formatting tags for uniformly controlling how a series of Web pages display.

describe data in a universal language that can be read by anyone with the appropriate translator tools.

If output is to be frequently accessed, which is the best alternative? audio CD ROM printer display screen or Web

display screen or Web

Well-designed input forms and display screens don't have to meet one of these objectives: ease of use. accuracy. efficiency effectiveness.

efficiency

Well-designed input forms and display screens should meet all of the following objectives EXCEPT: ease of use accuracy effectiveness efficiency

efficiency

Which is not a basic duty for controlling forms? designing effective forms deciding on how to get forms reproduced in the most economical way encouraging creative duplication of information collected and the forms that collect it making sure that each form in use fulfills its specific purpose making sure that the specified purpose is integral to organizational functioning

encouraging creative duplication of information collected and the forms that collect it

Which of these reports describe output produced when certain conditions occur? detailed exception historical summary

exception

What provides the who, what, when, where, why, and how of the system proposal? outline of systems study executive summary systems alternatives summary

executive summary

Which is not one of the seven main sections of a strong form? comments footnote signature and verification heading body

footnote

Which is not one of the top five most legible combinations of foreground lettering on background? blue on white yellow on black white on blue black on yellow green on black

green on black

Which is not an example of intangible benefits? improving the decision‑making process increasing processing speed enhancing accuracy becoming more competitive in customer service maintaining a good business image

improving the decision‑making process WRONG

A private attribute on a class diagram: is hidden from all classes except immediate subclasses. is only available in the object. does not change its value for different object instances. is available to the class and all classes that have relationships with the attribute's class.

is only available in the object.

Which is not an explanation of icons? pictorial, onscreen representations they serve functions similar to those of words they may replace functions in many menus meaning of icons is less quickly grasped than words they symbolize computer actions that users may select using a mouse, keyboard, lightpen, or joystick

meaning of icons is less quickly grasped than words

A mechanism for communicating between a server and a mainframe computer is called a: synchronization bar. EBCDIC conversion unit. message queue. swimlane.

message queue.

Which of the following is not a format for sending messages between classes on a sequence diagram? messageName(parameter1:returnValue, parameter2:returnValue) messageName( ) messageName(parameterType:parameterName(defaultValue) messageName(parameter1, parameter2)

messageName(parameter1:returnValue, parameter2:returnValue)

Which of the following is not used to capture and communicate the basics of the system proposal? words tables graphs metaphor

metaphor

Which leaves a stub behind as a record when separated? all specialty form multiple-part form continuous-feed form perforated form

perforated form

Which of these is not a characteristic of display screen output? available on a more flexible schedule can be more targeted to the user can be changed through direct interaction ephemeral portable

portable

Which of the following is not one of the four anomalies that may occur when creating database tables? data redundancy update anomaly primary anomaly insert anomaly deletion anomaly

primary anomaly

Which of the following is the main goal of the object - oriented approach? functional control maintaining systems minimizing the impact of change reusability

reusability

Push technology is used to: upgrade user browsers automatically. obtain survey information from unsuspecting individuals. send solicited or unsolicited information to a customer. force users to respond to a Web page.

send solicited or unsolicited information to a customer.

Solid arrowheads used for messages on a sequence diagram represent: return parameters. asynchronous messages. inheritance relationships. synchronous messages.

synchronous messages.

The main condition for choosing a forecasting model is: the graphs that already exist. the availability of historical data. the amount of numerical data that may be created for analysis. the relationships that are apparent in the data.

the availability of historical data.

The disadvantage of using a graphical judgment is: the confusion when the graphs are cyclical. the difficulty extrapolating exponential data to any degree of accuracy. that the curve may depend too much on individual judgment. it may represent a too simplistic view of the data.

the confusion when the graphs are cyclical. WRONG

An advantage of pull technology is: the document may be easily modified by other users. there is no need for a color printer, because the document is simple black and white. there is usually only one day in delivery of the document. the document may by mounted on the Web.

the document may by mounted on the Web.

Behavioral diagrams include all of the following except: activity diagrams. class diagrams. use case diagrams. communication diagrams. sequence diagrams.

use case diagrams - WRONG, try class diagrams