Ch 10 MC
The accounting department at Aglaya Telecom records an average of 8,000 transactions per hour. A cost-benefit analysis leads management to conclude that the maximum acceptable amount of data loss is 32,000 transactions. If the firm's recovery time objective is 240 minutes, then the worst case recovery time objective is
16 hours
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 50,000 transactions. If the firm's recovery time objective is 120 minutes, then the worst case recovery time objective is
8 hours 50/12.5=4 120/60=2 4x2=8
Which of the following is incorrect with regards to a data archive? Archives can be a copy of a database. Archives are usually encrypted. Physical and logical controls are the primary means of protecting archive files. Archives should be stored in different locations.
Archives are usually encrypted.
Whose responsibility is it to determine the amount of time an organization can afford to be without its information system?
Correct Senior management.
The best example of an effective payroll transaction file hash total would most likely be
Correct total of employees' social security numbers.
Which COBIT5 management practice addresses the importance of locating and designing the data centers housing mission-critical servers and databases so as to minimize the risks associated with natural and human-caused disasters?
DSS01.04
Which of the following is not a risk associated with the data input process? Data is inaccurate. Data is corrupted. Data is incomplete. Data is invalid.
Data is corrupted.
Which of the following is not an objective of a disaster recovery plan? Establish a permanent alternative means of processing information. Resume normal operations as soon as possible. Minimize the extent of the disruption, damage or loss. Train employees for emergency operations.
Establish a permanent alternative means of processing information
Which of the following statements is true?
Incremental daily backups are faster to perform than differential daily backups, but restoration is slower and more complex.
Loreen Tina is the chief lawyer for Tamara Incorporated. The CEO of Tamara Incorporated asks Loreen whether the company should periodically delete all company e-mail. If Loreen is well-versed in AIS best practices, she would mostly likely respond,
No, if we are ever sued we will not be able to draw upon our e-mail records to defend ourselves.
_______ is a data entry input control that requests each input data item and waits for an acceptable response, ensures that all necessary data are entered.
Prompting
A disaster recovery plan typically does not include uninterruptible power systems installed for key system components. backup computer and telecommunication facilities. scheduled electronic vaulting of files. a system upgrade due to operating system software changes.
a system upgrade due to operating system software changes
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?
amount (non financial fields)
A customer forget 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?
closed loop verification
When the staff accountant enters a correct customer number, the data entry screen displays the customer name and address. This is an example of
closed-loop verification
Which of the following controls checks the accuracy of input data by using it to retrieve and display other related information?
closed-loop verification
Which of the following controls would prevent entry of a nonexistent customer number in a sales transaction?
completeness check
When opening an Excel file, Sonja received a message saying that the file is locked for editing. This is happening because
concurrent update controls have locked the file
Which of the following provides detailed procedures to resolve the problems resulting from a flash flood that completely destroys a company s data center?
disaster recovery plan (DRP)
Cancellation and storage of documents means
documents are defaced and stored.
A limit check has an upper and lower limit.
false
An incremental backup copies all changes since the last full backup.
false
Data transmission controls are considered to be processing controls.
false - output control
A ________ determines whether the input data are of the proper type.
field check
Which data entry application control would detect and prevent entry of alphabetic characters as the price of an inventory item?
field check
A ________ control ensures that the correct and most current files are being updated.
file labels
The batch processing data entry control that sums a field that contains dollar values is called
financial total
Preparing batch totals is the ___ step in processing credit sales transactions.
first
A facility that contains all the computing equipment the organization needs to perform its essential business activities is known as a
hot site
Cancellation and storage of documents is one example of a(n)
input control
Turnaround documents are an example of a(n)
input control
Form design is one example of a(n)
input control.
What is the most effective way to ensure information system availability?
maintain a hot site
Data entry controls do NOT include sign checks. range check. field checks. parity check
parity check
What control are zero balance tests an example of?
processing controls
A ________ determines the correctness of the logical relationship between two data items
reasonableness test
A ________ determines the correctness of the logical relationship between two data items.
reasonableness test
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
reasonableness test
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
reasonableness test
Total overtime 806. which entry would best prevent similar data entry errors in the future? MJ 10 TD -5 AD 3 KS 2 KW -4 JB 800
reasonableness test
The maximum acceptable down time after a computer system failure is determined by a company's
recovery time objective
To minimize the risk of system downtime, Grizzly Corporation stores its data on multiple disk drives simultaneously. This practice is called
redundant arrays of independent drives
The best example of an effective payroll transaction file financial total would most likely be
sum of net pay
The best example of an effective payroll transaction file hash total would most likely be
sum of net pay
Which of the following is an example of the kind of batch total called a hash total?
the sum of the purchase amount field in a set of purchase orders
Which of the following statements is true with regards to system availability?
threats to system availability include hardware and software failures as well as natural and man made disasters
Data transmission controls are output controls.
true
Validity checks are a type of online processing control.
true
