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Accounting Information Systems 5th Edition James A. Hall - Solutions
Why might an individual launch a denial of service attack on a company's Internet connection?
Discuss the various ways in which data encryption may be used. Which way provides the most control?
Explain the triple-DES encryption techniques know as EEE3 and EDE3.
Discuss the unique control problems created by EDI.
"In an EDI system, only the customer needs to verify that the order being placed is from a valid supplier and not vice versa." Do you agree with this statement? Why or why not?
The database attributes that individual users have permission to access are defined in thea. operating system.b. user manual.c. database schema.d. user view.e. application listing.
An integrated group of programs that supports the applications and facilitates their access to t specified resources is called a (an)a. operating system.b. database management system.c. utility system.d. facility system.c. object system.
The purpose of a checkpoint procedure is facilitate restarting aftera. data processing errors.b. data input errors.c. the failure to have all input data ready on time.d. computer operator intervention.e. echo check failures.
A user's application may consist of several modules stored in separate memory locations, each with its own data. One module must not be allowed to destroy or corrupt another module. This is an objective ofa. operating system controls.b. data resource controls.c. computer center and security
A program that attaches to another legitimate program but does not replicate itself is called aa. virus.b. worm.c. Trojan horse.d. logic bomb.
Which of the following is NOT a data communications control objective?a. maintaining the critical application listb. correcting message loss due to equipment failurec. preventing illegal accessd. rendering useless any data that are success- fully captured by a perpetrator
Reviewing database authority tables is a(n)a. access control.b. organizational structure control.c. data resource control.d. operating resource control.
Hackers can disguise their message packets to look as if they came from an authorized user and gain access to the host's network using a technique calleda. spoofing.b. spooling.c. dual-homed.d. screening.
Transmitting numerous SYN packets to a targeted receiver, but not responding to an ACK, isa. a DES message.b. the request-response technique.c. a denial of service attack.d. a call-back device.
During the system design phase of the SDLC, input interfaces or input views must be sketched out so programmers can capture necessary elements when they program the interfaces the system will use to gain inputted information. Figure 14-12 presents an interface for a Reorder Report. Sketch a similar
The detailed dataflow diagram in Figure 14-16 decomposes the DFD for the expenditure cycle in Figure 14-15. Further decompose the process numbered 1.4.4, Receive Invoice, in detail.
In a recent financial fraud case, city employees in Brooklyn, New York, accessed electronic databases to defraud the city of $20 million. Several employees in collusion with the former deputy tax collector completely erased or reduced $13 million in property taxes and $7 million in accrued interest
What functions do CASE tools serve?
Distinguish between turnkey and backbone systems. Which is more flexible?
Are direct input systems (i.e., point-of-sale using bar codes) error free? Why or why not?
Who conducts the post-implementation review? When should it be conducted? If an outside consulting firm were hired to design and implement the new system, or a canned software package were purchased, would a post-implementation review still be useful?
The proper sequence of activities in the systems development life cycle isa. Design, analysis, implementation, and operation.b. Design, implementation, analysis, and operation.c. Analysis, design, implementation, and operation.d. Programming, analysis, implementation, and operation.
The process of developing specifications for hardware, software, personnel hours, data resources, and information products required to develop a system is referred to asa. systems analysis.b. systems feasibility study.c. systems maintenance.d. systems implementation.e. systems design.
Which of the following is NOT an output attribute?a. relevanceb. exception orientationc. zonesd. accuracy
Which of the following is NOT a principle feature of a PERT chart?a. starting and ending datesb. eventsc. pathsd. activities
Which of the following is the most appropriate activity for an internal auditor to perform during a review of systems development activity?a. Serve on the MIS steering committee that determines what new systems are to be developed.b. Review the methodology used to monitor and control the system
The least risky strategy for converting from a manual to a computerized accounts receivable system would be aa. direct conversion.b. parallel conversion.c. pilot conversion.d. database conversion.e. file conversion.
Errors are most costly to correct duringa. programming.b. conceptual design.c. analysis.d. detailed design.e. implementation.
A useful tool for formatting computer input and file records is aa. document flowchart.b. printer layout chart.c. record layout sheet.d. work distribution analysis.e. decision table.
User acceptance testing is more important in an object-oriented development process than in a traditional environment because of the implications of thea. absence of traditional design documents.b. lack of a tracking system for changes.c. potential for continuous monitoring,d. inheritance of
Characteristics of an accounting application that might influence the selection of data entry devices and media for a computerized accounting system area. Timing of feedback needs relative to input, need for documentation of an activity, and the necessity for reliability and accuracy.b. cost
A systems development approach used to quickly produce a model of user interfaces, user interactions with the system, and process logic is called: .a. neural networking.b. prototyping.c. reengineering.d. application generation.
The program evaluation and review technique (PERT) is widely used to plan and measure progress toward scheduled events. PERT is combined with cost data to produce a PERT- cost analysis toa. calculate the total project cost inclusive of the additional slack time.b. evaluate and optimize trade-offs
All of the following are included in the systems implementation process except:a. Training.b. documentation.c. systems design.d. Testing and correction.
When using the PERT method for network analysis, the critical path through the network is thea. shortest path through the network.b. longest path through the network.c. path with the most slack.d. path with the most variability in estimated times.e. least-cost path,
Reeve Lumber Company has a small information systems department consisting of five people. A backlog of approximately 15 months exists for requests for new systems applications to even be considered. Both information users and systems personnel are unhappy with this state of affairs. The users feel
Sawicki Music Supply is a mail-order business that accepts merchandise orders by telephone and mail.All payments must be prepaid with a major credit card. Once an order is received, the item is either found in inventory and shipped immediately, the item is not found in inventory and is ordered from
Examine the context and intermediate (Level 1)dataflow diagrams on the next page and indicate what is incorrect about them.
Robin Alper, a manager of the credit collections department for ACME Building Supplies, is extremely unhappy with a new system that was installed three months ago. Her complaint is that the dataflows from the billing and accounts receivable departments are not occurring in the manner originally
Robert Hamilton was hired six months ago as the controller of a small oil and gas exploration and development company, Gusher, Inc., headquartered in Beaumont, Texas. Before working at Gusher, Hamilton was the controller of a larger petroleum company, Eureka Oil Company, based in Dallas.The joint
The Peabody Coal Corporation recently completed the final feasibility report for a new general ledger accounting system. It has hired a consulting firm to program and install the new system. The consulting firm is charging $350,000 for the remaining tasks to be performed. These tasks are to be
The lottery commission of a state with about$500 million a year in revenue has looked to modern technology for increasing lottery sales. The strategy is to place self-service sales machines around the state. Customers simply fill out the bubbles on the form and insert the form into the computer.If
Accountants understand their jobs very well.Programmers also understand their jobs.Unfortunately, accountants are rarely programmers and programmers are rarely accountants. While an accountant does not need to program, the accountant must be able to communicate his requirement to the programmer, an
Silver Aviation assembles small aircraft for commercial use. The majority of Silver’s business is with small freight airlines serving areas where the airport does not accommodate larger planes. The remainder of Silver’s customers are commuter airlines and individuals who use planes in their
On page 718 is an ER diagram for the expenditure cycle.Required:a. List the entity database tables and describe which entities need representing from an AIS perspective.b. For each item identified as relevant to AIS, prepare a list of database tables along with primary and embedded foreign keys.c.
Vince Malloy and Katy Smith, both systems personnel at Shamrock Steelworks, are designing a new expenditure cycle system. Vince has worked for Shamrock for 12 years and has been involved in many systems development projects. Katy recently began working for Shamrock. She has four years of experience
Classify each of the following as a problem or a symptom. If it is a symptom, give two examples of a possible underlying problem. If it is a problem, give two examples of a possible symptom that may be detected.a. declining profitsb. defective production processc. low-quality raw materialsd.
Kruger Designs hired a consulting firm three months ago to redesign the information system used by the architects. The architects will be able to use state-of-the-art CAD programs to help in designing the products. Further, they will be able to store these designs on a network server where they and
Consider the following dialogue between a systems professional, Joe Pugh, and a manager of a department targeted for a new information system, Lars Meyer: Pugh: The way to go about the analysis is to first examine the old system, such as reviewing key documents and observing the workers perform
Your company, Kitchen Works, is employing the SDLC for its new information system. The company is currently performing a number of feasibility stud- ies, including the economic feasibility study. A draft of the economic feasibility study has been presented to you for your review. You have been
Listed below are some probability estimates of the costs and benefits associated with two competing projects.a. Compute the net present value of each alterna- tive. Round the cost projections to the nearest month. What happens to the answer if the probabilities of the recurring costs are incor-
An organization's IT function has the following goals:• Improve the quality of IT solutions and services to its internal users.• Increase the ratio of planned-to-realized benefits from systems solutions.• Fully match IT strategy with enterprise strategies.• Integrate information systems
Which of the following statements is correct?a. TCP/IP is the basic protocol that permits communication between Internet sites.b. TCP/IP controls Web browsers that access the Web.c. TCP/IP is the document format used to produce Web pages.d. TCP/IP is used to transfer text files, pro- grams,
Which of the following best describes a system of computers that connects the internal users of an organization distributed over a wide geo graphic area?a. LANb. Internetc. decentralized networkd. multidrop networke. intranet
Sniffer software isa. used by malicious Web sites to sniff data from cookies stored on the user's hard drive.b. used by network administrators to analyze network traffic.c. used by bus topology intranets to sniff for carriers before transmitting a message to avoid data collisions.d. an illegal
Which of the following statements is true?a. Cookies were originally intended to facilitate advertising on the Web.b. Cookies always contain encrypted data.c. Cookies are text files and never contain encrypted data.d. Cookies contain the URLs of sites visited by the user.e. Web browsers cannot
A message that is contrived to appear to be coming from a trusted or authorized source is calleda. a denial of service attack.b. digital signature forging.c. Internet protocol spoofing.d. URL masquerading.e. a SYN-ACK packet.
A digital signaturea. is the encrypted mathematical value of the message sender's name.b. is derived from the digest of a document that has been encrypted with the sender's private key.c. is derived from the digest of a document that has been encrypted with the sender's public key.d. is the
Which of the following statements about the client-server model is correct?a. It is best suited to the token-ring topology because the random-access method used by this topology detects data collisions.b. It distributes both data and processing tasks to the server node. The client-server model can
Which of the following statements is correct?a. A bridge is used to connect a LAN and a WAN.b. Packet switching combines the messages of multiple users into a "packet" for transmission. At the receiving end, the packet is dis-assembled into individual messages and distributed to the user.c. The
The coded message that follows is an encrypted message from Brutus to the Roman Senate. It was produced using the Caesar Cipher method in which each letter is shifted by a fixed number of places (determined by the key value).Required: Determine the key used to produce the coded message above and
a. Develop a Caesar Cipher-type encryption algorithm with a little more complexity in it. For example, the algorithm could alternatively shift the cleartext letters positive and negative by the amount of the key value. Variations on this are limitless.b. Select a single-digit key.c. Code a short
John Ozment, director of special projects and anal- ysis for Ozment's company, is responsible for preparing corporate financial analyses and monthly statements and reviewing and presenting to upper management the financial impacts of proposed strategies. Data for such financial analyses and are
Visit 10 Web sites that sell products or services and record the URL of each. Evaluate each site's published privacy policy in terms of the conditions need for compliance with the Safe Harbor Agreement. Write a report of your findings.
The purchase order for one firm is the source doc- ument for the sales order of another firm. Consider the following purchase order and sales order data elements stored for two firms. Discuss any differ- ences that may be problematic in transferring information between the two firms. Purchasing
Gresko Toys was started in the early 1960s by Mr. and Mrs. Gresko. Initially, the company was small and few toys were produced. The talent and skills of Mr. Gresko were by far the major assets of the company. Toys were mainly made of wood and had few or no electronic parts; they were mainly
Santa's Attic.com is an online retailer/manufacturer of children's toys. Its main competitors are larger EC toy companies including Amazon.com; Yahoo Shopping, which includes ToysRUs.com and KBKids.com; and all of the other retail stores with online shopping. It has a low market share compared to
Explain why a survey of the current system may serve no purpose when an organization is planning to implement an ERP
What purposes do system objectives serve? Should they be broadly or narrowly defined? Why?
Should the systems development tasks be performed by users of the system or by systems professionals who are trained specifically in systems development techniques? Why?
Some may argue that a company's financial bottom line is all important. Comment on this from the financial perspective of the balanced scorecard approach.
A lack of support by top management has led to the downfall of many new systems projects during the implementation phase. Why is this support so important?
All of the following individuals would likely be SDLC participants except:a. accountants.b. shareholders.c. management.d. programmers.e. all of the above.
Which of the following represents the correct order in problem resolution?a. Define the problem, recognize the problem, perform feasibility studies, specify system objectives, and prepare a project proposal.b. Recognize the problem, define the problem, perform feasibility studies, specify system
In reviewing a feasibility study for a new computer system, the auditor should ascertain that the studya. considered costs, savings, controls, profit improvement, and other benefits analyzed by application area.b. provided the preliminary plan for converting existing manual systems and clerical
The most important factor in planning for a system change isa. having an auditor as a member of the design team.b. using state-of-the-art techniques.c. concentrating on software rather than hardware.d. involving top management and people who use the system.e. selecting a user to lead the design
In the context of a feasibility study, technical feasibility refers to whethera. a proposed system is attainable, given the existing technology.b. the systems manager can coordinate and control the activities of the systems department.c. an adequate computer site exists for the proposed system.d.
A systems survey is being conducted to obtain an accurate perspective on the existing system and to identify weaknesses that can be corrected by the new system. Which of the following steps is NOT considered part of this systems survey?a. Interviews are conducted with operating people and
Kesta Company is doing a systems development study. The study started with broad orga- nizational goals and the types of decisions made by organizational executives. This study supports a model of information flow and, ultimately, design requirements. This approach to systems development is
The study that determines whether a project can be completed in an acceptable time frame is:a. a schedule feasibility study.b. a technical feasibility study.c. an operational feasibility study.d. an economic feasibility study.e. a legal feasibility study.
Which of the following is least likely to be an accountant's role in the SDLC?a. User.b. Consultant.c. Auditor.d. Programmer.e. All of these are likely roles.
In determining the need for system changes, several types of feasibility studies can be made. The most commonly recognized feasibility studies area. legal, environmental, and economic.b. environmental, operational, and economic.c. technical, economic, legal, and practical.d. practical, technical,
The technique that recognizes the time value of money by discounting the after-tax cash flows for a project over its life to time period zero using the company's minimum desired rate of return is called thea. net present value method.b. capital rationing method.c. payback method.d. average rate of
One-time costs of system development include all of the following except:a. Site preparation.b. Hardware maintenance.c. Programming.d. Hardware acquisition.e. Data conversion. Questions 13 and 14 are based on the following information and deal with a critique of the cost- benefit analysis portion
The estimated category that ordinarily would have the greatest uncertainty as to its precise value isa. the tangible costs.b. the intangible costs.c. the tangible benefits.d. the intangible benefits.e. none of the above because they are equally precise.
Which of the following statements best describes what is usually true regarding the estimates included in feasibility studies?a. Development time and cost are usually less than estimated; benefits are stated accurately.b. Development time and cost are usually less than estimated; benefits are
Closed database architecture isa. a control technique intended to prevent unauthorized access from trading partners.b. a limitation inherent in traditional information systems that prevents data sharing.c. a data warehouse control that prevents unclean data from entering the warehouse.d. a
Each of the following is a necessary element for the successful warehousing of data except:a. cleansing extracted data.b. transforming data.c. modeling data.d. loading data.e. all of the above are necessary.
Which of the following is typically not part of an ERP's OLAP applications?a. decision support systemsb. information retrievalc. ad hoc reporting/analysisd. logisticse. what-if analysis
There are a number of risks that may be associated with ERP implementation. Which of the following was not stated as a risk in the chapter?a. A drop in firm performance after implementation because the firm looks and works differently than it did while using a legacy system.b. Implementing
Which statement is not true?a. In a typical two-tier client-server architecture, the server handles both application and database duties.b. Client computers are responsible for presenting data to the user and passing user input back to the server.c. Two-tier architecture is for local area net- work
SAP, one of the leading ERP producers, makes several modules available to adopters. Which of the following is not a SAP module?a. Business Process Supportb. Internet Development Supportc. Logistics.d. E-commerce Supporte. Human Resources
Auditors of ERP systemsa. need not be concerned about segregation of duties because these systems possess strong computer controls.b. focus on output controls such as independent verification to reconcile batch totals.c. may be concerned that the data in the data warehouse is too clean and free
Which statement is most correct?a. SAP is more suited to service industries than manufacturing clients.b. J.D. Edwards' ERP is designed to accept the best practices modules of other vendors.c. Oracle evolved from a human resources system.d. PeopleSoft is the world's leading supplier of software for
You are the CEO of a large organization that implemented a data warehouse for internal analysis of corporate data. The operations manager has written you a memo advocating opening the data warehouse to your suppliers and customers. Explain any merit to this proposal. What are the control issues, if
Your organization is planning to implement an ERP system. Some managers in the organization favor the big bang approach. Others are advocating a phased-in approach. The CEO has asked you, as project leader, to write a memo summarizing the advantages and disadvantages of each approach and to make a
For each of the following processes state whether OLTP or OLAP is appropriate and why.a. An order entry system that retrieves customer information, invoice information, and inventory information for local sales.b. An order entry system that retrieves customer information, invoice information,
You are the chief information officer for a midsized organization that has decided to implement an ERP system. The CEO has met with a consulting ERP firm based on a recommendation from a personal friend at his club. At the interview the president of the consulting firm introduced the chief
You are an independent auditor attending an engagement interview with the client. The client organization has recently implemented a data warehouse. Management is concerned that the audit tests that you perform will disrupt operations. They suggest that instead of running tests against the live
The Nevada Department of Motor Vehicles is the agency responsible for licensing both drivers and vehicles in the state of Nevada. Until recently, legacy systems were used for both licensing needs. The legacy system for driver's licenses maintained the following information about each licensed
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