Chapter 15 Multiple Choice

The systems analyst can support accurate data entry through achievement of all these broad objectives except:

A) effective screen design.

B) effective and complete data capture.

C) efficient data capture.

D) assuring quality through validation.

a

Which is not a purpose for coding?

A) keeping track of something

B) classifying information

C) concealing information

D) creating information

E) revealing information

d

Which code indicates the approximate order that the data were entered?

A) classification codes

B) alphabetic deviation codes

C) block sequence codes

D) cipher codes

E) simple sequence codes

e

A disadvantage of alphabetic derivation codes is that:

A) there is no meaning inherent in the code.

B) there may be names that do not have the minimum required number of consonants in the name or description.

C) there are not enough attributes in the data to form a code.

D) there is no way to obtain information from a part of the code.

E) there is no way to sort on any of the data.

b

Classification codes are used to:

A) group data according to a common characteristic.

B) control the sequence of data by ensuring that a class of codes has all unique values.

C) disguise data within a classification, that is, ensure security for classified data.

D) encrypt data according to a security class.

E) enable users to understand the components or classes of data within a larger code.

a

A problem that occurs with classification codes is that:

A) there may not be enough letters to form a complete code.

B) the classifications may not be secure enough.

C) there may be several groups that have the same first letter.

D) the classifications are not easily understood since they are encrypted.

E) the data may not be recognized as belonging to any classes.

c

The code used for pull-down menus in a GUI system is:

A) classification codes.

B) alphabetic deviation codes.

C) block sequence codes.

D) cipher codes.

E) simple sequence codes.

a

Which code is used to assign codes sequentially within a category?

A) classification codes

B) alphabetic deviation codes

C) block sequence codes

D) cipher codes

E) simple sequence codes

c

Which code may be used to conceal or disguise information?

A) classification codes

B) alphabetic deviation codes

C) block sequence codes

D) simple sequence codes

E) cipher codes

e

Which code describes an object by its membership in many subgroups?

A) significant-digit codes

B) block sequence codes

C) cipher codes

D) mnemonic codes

E) function codes

a

An advantage of using significant-digit codes is that:

A) the data may be easily concealed.

B) the code may be generated by auto-sequencing programs.

C) the code is short and quick to enter.

D) inquiries may be performed on a portion of the code.

E) the code combines the flexibility of data that is grouped and a sequence code.

d

Any code that helps the data entry person remember how to enter the data or the end-user remember how to use the information can be considered:

A) classification code.

B) significant-digit code.

C) mnemonic code.

D) block sequence code.

c

The code that is used to represent glyphs or syllables or whole words is:

A) block sequence.

B) unicode.

C) mnemonic code.

D) significant-digit.

b

Which code is necessary for instructing either the computer or the decision maker about what action to take?

A) function code

B) mnemonic code

C) classification code

D) simple sequence code

a

In establishing a coding system, the analyst should do all except:

A) make codes that are diversified.

B) keep codes concise.

C) keep codes uniform.

D) allow for modification of codes.

E) make codes meaningful.

a

Why would a company issuing credit cards use a code that is much larger than the minimum length?

A) to allow for expansion, since the customer growth may increase exponentially

B) because the numbers are assigned sequentially and the codes should not use all possible numbers

C) so that a person would not be able to guess a credit card number and illegally use it to purchase goods

D) because the codes use the alphabetic derivation format

E) since the codes are used to do inquiries on the data within them

c

Codes are:

A) used in GUI programs to ensure that codes keyed by the user are valid.

B) used in a validation program to ensure that only valid codes have been entered.

C) printed in reports.

D) displayed on screens.

E) All of the above.

b

Codes in a GUI system may be stored:

A) in a database table.

B) as a database function.

C) as a pull-down list.

D) A and B above.

E) A and C above.

d

Which is a way to read input from a source document with an optical scanner rather than off the magnetic media?

A) mark sense forms

B) punch out forms

C) optical character recognition (OCR)

D) bar codes

c

Which method is useful for scoring answer sheets for survey questionnaires?

A) data strips

B) bar codes

C) punch out forms

D) mark sense forms

E) MICR

d

Which of the following is used by radio frequency identification for automatic collection of data?

A) micro transmitting stations

B) transponders

C) cell phones

D) hand-held devices

b

Which is not a possible way to validate input?

A) test for missing data

B) test for correct field length

C) test for accurate character data

D) test for comparison with stored data

E) using check digits

c

Value checks are performed for data that is:

A) continuous.

B) discrete.

C) cross-referenced.

D) using a check digit.

E) stored on a master file.

b

Credit card processing uses a check digit formula called the ________ formula.

A) RFID

B) modulus 3

C) Luhn

D) regular expression

E) DTD

c

Which of the following is a way to validate an XML document?

A) DTD

B) schema

C) Both of the above will validate an XML document.

D) None of the above will validate an XML document.

c

The process of putting ambiguous or cumbersome data into short, easily entered digits or letters is called:

A) coding.

B) data entry.

C) data capture.

D) data analysis.

a

A ________ code, rather than a random number, gives users an approximation of when the order was received.

A) sequence

B) alphabetic

C) simple

D) numeric

a

Data are unclear and not as readily interpretable when coding classes are not mutually:

A) exclusive.

B) elusive.

C) enforced.

D) inclusive.

a

A user enters the code directly into the terminal of a(n) ________ system or onto a source document of a batch system.

A) online

B) offline

C) documented

D) paper-based

a

The ________ sequence code is an extension of the sequence code.

A) block

B) classification

C) significant-digit

D) numeric

a

When it is possible to describe a product via its membership in many subgroups, we can use a ________ code to help describe it.

A) significant-digit

B) block

C) cipher

D) numeric

a

The code that is used to represent glyphs or syllables or whole words is called:

A) unicode.

B) function code.

C) alpha-numeric code.

D) mnemonic code.

a

________ means that the identification code for a customer should not change each time new data are received.

A) Stability

B) Reliability

C) Standards based

D) Sortable

a

There are two types of data to enter: data that ________ every transaction, and data that concisely differentiate the particular item being processed from all other items.

A) change

B) filter

C) capture

D) remove

a

Effective data ________ is achievable only if prior thought is given to what the source document should contain.

A) capture

B) entry

C) feedback

D) analysis

a

One of the disadvantages of using 2D codes is:

A) the ease with which a printed code can be stickered over or tampered with.

B) that codes are readable without the use of specialized software.

C) the unreliability of the transponders used that may run out of power.

D) the minimum distance required to read the code.

a