Deck 10: Information Systems Controls for Systems Reliability Part 3: Processing Integrity and Availability

Question 1

A customer failed to include her account number on her check,and the accounts receivable clerk credited her payment to a different customer with the same last name.Which control could have been used to most effectively to prevent this error?

A) Closed-loop verification
B) Duplicate values check
C) Validity check
D) Reconciliation of a batch control total

Answer 1

A

Question 2

A validity check is an example of a(n)

A) data entry control.
B) data transmission control.
C) output control.
D) input control.

Answer 2

A

Question 3

Sequentially prenumbered forms is an example of a(n)

A) data entry control.
B) data transmission control.
C) processing control.
D) input control.

Answer 3

D

Question 4

Error logs and review are an example of

A) data entry controls.
B) data transmission controls.
C) output controls.
D) processing controls.

Question 5

Cancellation and storage of documents means that

A) data are copied from a document and stored, after which the document is shredded.
B) documents are defaced before being shredded.
C) documents are defaced and stored.
D) cancellation data are copied from documents before they are stored.

Question 6

All of the following controls for online entry of a sales order would be useful except

A) check digit verification on the dollar amount of the order.
B) validity check on the inventory item numbers.
C) field check on the customer ID and dollar amount of the order.
D) concurrent update control.

Question 7

The data entry control that would best prevent entering an invoice received from a vendor who is not on an authorized supplier list is

A) a validity check.
B) an authorization check.
C) a check digit.
D) closed-loop verification.

Question 8

Which of the following data entry controls would not be useful if you are recording the checkout of library books by members?

A) Sequence check
B) Prompting
C) Validity check
D) Concurrent update control

Question 9

Parity checks are an example of a(n)

A) data entry control.
B) data transmission control.
C) output control.
D) processing control.

Question 10

Batch totals are an example of a(n)

A) data entry control.
B) data transmission control.
C) output control.
D) processing control.

Question 11

If invoices are processed in groups of fifty,which fields from the document shown below would not be used to create a hash control total?

A) Amount
B) Item Number
C) Quantity Ordered
D) Sales Order number

Question 12

When processing weekly payroll,an employee accidentally entered 400 for hours worked.The best data entry control for this error would be

A) a limit check.
B) a check digit.
C) batch total reconciliation.
D) a field check.

Question 13

User reviews are an example of a(n)

A) data entry control.
B) data transmission control.
C) output control.
D) processing control.

Question 14

A specific inventory record indicates that there were 12 items on hand before a customer brings two of the items to the check stand to be purchased.The cashier accidentally entered quantity 20 instead of 2.Which data entry control would best have prevented this error?

A) sign check
B) limit check
C) validity check
D) field check

Question 15

Turnaround documents are an example of a(n)

A) data entry control.
B) output control.
C) processing control.
D) input control.

Question 16

A data entry input control in which the application software sums the first four digits of a customer number to calculate the value of the fifth digit and then compares the calculated number to the number typed in during data entry is an example of a

A) check digit verification.
B) validity check.
C) closed-loop verification.
D) duplicate data check.

Question 17

Following is the result of batch control totals on employee Social Security Numbers in a payroll processing transaction: The difference in the control totals is 720,000.Which data entry control would best prevent similar data entry errors in the future?

A) Modulus 11
B) Validity check
C) Check digit
D) Sequence check

Question 18

The best example of a hash total for a payroll transaction file could be

A) total of employees' social security numbers.
B) sum of net pay.
C) total number of employees.
D) sum of hours worked.

Question 19

Data matching is an example of a(n)

A) data entry control.
B) data transmission control.
C) processing control.
D) input control.

Question 20

Forms design is an example of this type of control.

A) Data entry control
B) Processing control
C) Output control
D) Input control

Question 21

This ensures that the input data will fit into the assigned field.

A) Limit check
B) Range check
C) Size check
D) Validity check

Question 22

The Spontaneous Combustion Rocket Shoppe in downtown Fargo,North Dakota,generates three quarters of its revenue from orders taken over the Internet.The revenue clearing account is debited by the total of cash and credit receipts and credited by the total of storefront and Internet sales.This is an example of a

A) data integrity test.
B) zero-balance test.
C) trial balance audit.
D) cross-footing balance test.

Question 23

This batch processing data entry control sums the number of items in a batch.

A) Financial total
B) Hash total
C) Record count
D) Sequence check

Question 24

This batch processing data entry control sums a non-financial numeric field.

A) Record count
B) Financial total
C) Hash total
D) Sequence check

Question 25

This control ensures that the correct and most current files are being updated.

A) Cross-footing balance test
B) Data matching
C) File labels
D) Write-protect mechanism

Question 26

This batch processing data entry control sums a field that contains dollar values.

A) Record count
B) Financial total
C) Hash total
D) Sequence check

Question 27

Chaz Finnerty called the IT Help Desk in a huff."I'm trying to open an Excel file and I get a message that says that the file is locked for editing.What's going on?" The answer is likely that

A) the file is corrupted due to a computer virus.
B) there is no problem. Chaz is editing the file, so it is locked.
C) concurrent update controls have locked the file.
D) Chaz probably opened the file as read-only.

Question 28

When I enter a correct customer number,the data entry screen displays the customer name and address.This is an example of

A) prompting.
B) preformatting.
C) closed-loop verification.
D) error checking.

Question 29

This determines if all required data items have been entered.

A) Completeness check
B) Field check
C) Limit check
D) Range check

Question 30

File labels are an example of

A) data entry controls.
B) output controls.
C) processing controls.
D) source data controls.

Question 31

This tests a numerical amount to ensure that it does not exceed a predetermined value nor fall below another predetermined value.

A) Completeness check
B) Field check
C) Limit check
D) Range check

Question 32

This data entry control compares the ID number in transaction data to a master file to verify that the ID number exists.

A) Reasonableness test
B) User review
C) Data matching
D) Validity check

Question 33

Modest Expectations Investment Services (MEIS)allows customers to manage their investments over the Internet.If customers attempt to sell more shares of a stock than they have in their account,an error message is displayed.This is an example of a

A) reasonableness test.
B) field check.
C) validity check.
D) limit check.

Question 34

This determines if characters are of the proper type.

A) Field check
B) Alpha-numeric check
C) Range check
D) Reasonableness test

Question 35

This control protects records from errors that occur when two or more users attempt to update the same record simultaneously.

A) Concurrent update controls
B) Cross-footing balance test
C) Data conversion controls
D) Recalculation of batch totals

Question 36

Modest Expectations Investment Services (MEIS)allows customers to manage their investments over the Internet.If customers attempt to spend more money than they have in their account,an error message is displayed.This is an example of a

A) reasonableness test.
B) field check.
C) validity check.
D) limit check.

Question 37

This tests a numerical amount to ensure that it does not exceed a predetermined value.

A) Completeness check
B) Limit check
C) Range check
D) Sign check

Question 38

A computer operator accidentally used the wrong master file when updating a transaction file.As a result,the master file data is now unreadable.Which control could best have prevented this from happening?

A) Internal header label
B) Validity check
C) Check digit
D) Parity check

Question 39

Check digit verification is an example of a(n)

A) data transmission control.
B) output control.
C) processing control.
D) input control.

Question 40

This determines the correctness of the logical relationship between two data items.

A) Range check
B) Reasonableness test
C) Sign check
D) Size check

Question 41

The accounting department at Synergy Hydroelectric records an average of 12,500 transactions per hour.By cost-benefit analysis,managers have concluded that the maximum acceptable loss of data in the event of a system failure is 25,000 transactions.The firm's recovery point objective is therefore

A) 25,000 transactions
B) 12,500 transactions
C) 1 hour
D) 2 hours

Question 42

________ involves copying only the data items that have changed since the last partial backup.

A) Archive
B) Cloud computing
C) Differential backup
D) Incremental backup

Question 43

What is the most effective way to ensure information system availability?

A) High bandwidth
B) Maintain a hot site
C) Maintain a cold site
D) Frequent backups

Question 44

A facility that is pre-wired for necessary telecommunications and computer equipment,but doesn't have equipment installed,is known as a

A) cold site.
B) hot site.
C) remote site.
D) subsidiary location.

Question 45

________ enables a system to continue functioning in the event that a particular component fails.

A) An incremental backup procedure
B) Fault tolerance
C) Preventive maintenance
D) A concurrent update control

Question 46

Probably the most important change management control is

A) monitoring user rights and privileges during the change process.
B) testing all changes thoroughly prior to implementation on a stand-alone computer.
C) updating all documentation to reflect changes made to the system.
D) management's careful monitoring and review.

Question 47

The accounting department at Synergy Hydroelectric records an average of 12,500 transactions per hour.By cost-benefit analysis,managers have concluded that the maximum acceptable loss of data in the event of a system failure is 25,000 transactions.If the firm's recovery time objective is 120 minutes,then the worst case recovery time objective is

A) 1 hour
B) 2 hours
C) 3 hours
D) 4 hours

Question 48

________ copies all changes made since the last full backup.

A) Archive
B) Cloud computing
C) Differential backup
D) Incremental backup

Question 49

The maximum acceptable down time after a computer system failure is determined by a company's

A) recovery time objective.
B) recovery point objective.
C) recovery objective.
D) maximum time recovery objective.

Question 50

Which of the following is not an objective of a disaster recovery plan?

A) Minimize the extent of the disruption, damage or loss.
B) Permanently establish an alternative means of processing information.
C) Resume normal operations as soon as possible.
D) Train employees for emergency operations.

Question 51

This control entails verifying that the proper number of bits are set to the value 1 in each character received.

A) Echo check
B) Field check
C) Parity check
D) Trailer record

Question 52

The accounting department at Synergy Hydroelectric records an average of 10,000 transactions per hour.By cost-benefit analysis,managers have concluded that the maximum acceptable loss of data in the event of a system failure is 40,000 transactions.The firm's recovery point objective is therefore

A) 40,000 transactions
B) 10,000 transactions
C) 10 hours
D) 4 hours

Question 53

A copy of a database,master file,or software that will be retained indefinitely as a historical record is known as a(n)

A) archive.
B) cloud computing.
C) differential backup.
D) incremental backup.

Question 54

The maximum amount of time between backups is determined by a company's

A) recovery time objective.
B) recovery point objective.
C) recovery objective.
D) maximum time recovery objective.

Question 55

A facility that contains all the computing equipment the organization needs to perform its essential business activities is known as a

A) cold site.
B) hot site.
C) remote site.
D) subsidiary location.

Question 56

Which item below would not typically be part of an adequate disaster recovery plan?

A) a system upgrade due to operating system software changes
B) uninterruptible power systems installed for key system components
C) scheduled electronic vaulting of files
D) backup computer and telecommunication facilities

Question 57

While this type of backup process takes longer than the alternative,restoration is easier and faster.

A) Archive
B) Cloud computing
C) Differential backup
D) Incremental backup

Question 58

The accounting department at Synergy Hydroelectric records an average of 10,000 transactions per hour.By cost-benefit analysis,managers have concluded that the maximum acceptable loss of data in the event of a system failure is 20,000 transactions.If the firm's recovery time objective is 60 minutes,then the worst case recovery time objective is

A) 1 hour
B) 2 hours
C) 3 hours
D) 4 hours

Question 59

When a computer system's files are automatically duplicated on a second data storage system as they are changed,the process is referred to as

A) real-time mirroring.
B) batch updating.
C) consistency control.
D) double-secure storage.

Question 60

Concerning system availability,which of the following statements is true?

A) Human error does not threaten system availability.
B) Proper controls can maximize the risk of threats causing significant system downtime.
C) Threats to system availability can be completely eliminated.
D) Threats to system availability include hardware and software failures as well as natural and man-made disasters.

Question 61

Define and contrast a recovery point objective and a recovery time objective.

Question 62

Discuss how cloud computing could both positively and negatively affect system availability.

Question 63

Which of the following is true?

A) Cloud computing is a control technique for system availability.
B) Cloud computing eliminates the need for backup of applications and data.
C) Cloud computing refers to the practice of storing application files and backup data on satellites 'in the clouds'.
D) Cloud computing eliminates the need for companies to own their own software and servers.