Foundations And Modeling Of Information Systems Practice Practice Tests

Question 1

A manufacturing company implements an information system to track production efficiency. Before the system, the average production time for a unit was 2 hours, with a standard deviation of 0.2 hours. After implementation, the average production time is reduced to 1.8 hours, with a standard deviation of 0.15 hours. Calculate the percentage improvement in average production time.

Accepted Answer

B. 10%

Answer

A. 5%

Answer

C. 15%

Answer

D. 20%

Question 2

A retail company invests €80,000 in a new inventory management system. The system is expected to reduce inventory holding costs by 15% and stockouts by 8%. Before the system, annual inventory holding costs were €40,000 and stockout costs were €20,000. Calculate the total annual cost savings from the new system.

Accepted Answer

C. €7,600

Answer

A. €4,000

Answer

B. €6,000

Answer

D. €9,200

Question 3

A company's database stores sales transactions. The database contains 50,000 records. Each record has an average size of 500 bytes. Calculate the total storage space required for the database in gigabytes (GB).

Accepted Answer

B. 25 MB

Answer

A. 2.5 GB

Answer

C. 250 MB

Answer

D. 2.5 TB

Question 4

A company is considering two information system projects. Project A has an initial cost of €30,000 and is expected to generate annual revenue of €10,000 for 5 years. Project B has an initial cost of €40,000 and is expected to generate annual revenue of €12,000 for 5 years. Assuming a discount rate of 10%, calculate the Net Present Value (NPV) of Project A.  Use the formula: $NPV = \sum_{t=1}^{n} \frac{CF_t}{(1+r)^t} - Initial Investment$, where $CF_t$ is the cash flow at time t, r is the discount rate, and n is the number of periods.

Accepted Answer

A. €7,907.87

Answer

B. €8,200.00

Answer

C. €10,000.00

Answer

D. €12,000.00

Question 5

A company is implementing a new ERP system. Which of the following factors can contribute to the technical complexity factor (TCF) in Use Case Points (UCP) estimation?

Answer

A. Distributed system

Answer

B. Performance objectives

Answer

C. End-user efficiency

Answer

D. Data entry

Question 6

A company is evaluating two network architectures for connecting its headquarters and a remote branch office. Architecture A involves a dedicated leased line with a fixed cost of €5,000 per month and a bandwidth of 100 Mbps. Architecture B uses a VPN over the public internet with a fixed cost of €1,000 per month and an average bandwidth of 50 Mbps. The company estimates that it needs to transmit 500 GB of data per month. Assuming the cost of data transmission is negligible, and the company values bandwidth at €0.10 per Mbps, which architecture is more cost-effective?

Accepted Answer

B. Architecture B

Answer

A. Architecture A

Answer

C. Both architectures are equally cost-effective

Answer

D. Cannot be determined with the given information

Question 7

A company is implementing a new information system. The system includes 8 use cases with an average complexity weight of 2, 5 actors with an average complexity weight of 1.5. The technical complexity factor (TCF) is estimated to be 0.9, and the environmental complexity factor (ECF) is estimated to be 1.1. Calculate the estimated effort in person-hours, assuming each use case point requires 20 person-hours.

Accepted Answer

A. 514.8 person-hours

Answer

A. 465.3 person-hours

Answer

B. 514.8 person-hours

Answer

C. 418.74 person-hours

Answer

D. 621.4 person-hours

Question 8

A company is designing a new e-commerce platform. The presentation layer is estimated to require 200 hours of development effort, the business rules layer is estimated to require 300 hours, and the data layer is estimated to require 150 hours. If the average cost per development hour is €75, what is the total estimated cost for developing these three layers?

Accepted Answer

B. €56,250

Answer

A. €37,500

Answer

B. €48,750

Answer

C. €56,250

Answer

D. €63,750

Question 9

Which of the following are key considerations when selecting a processing architecture for a new information system?

Answer

Scalability

Answer

Security

Answer

Cost

Answer

Performance

Answer

Aesthetics

Question 10

A company has a LAN with 100 devices. The average data transmission rate required per device is 10 Mbps. If the network utilization should not exceed 70%, what is the minimum bandwidth required for the LAN?

Accepted Answer

C. 1428.57 Mbps

Answer

A. 700 Mbps

Answer

B. 1000 Mbps

Answer

D. 1700 Mbps

Question 11

A software development project is estimated to have the following characteristics: 8 actors (average complexity), 15 use cases (average complexity). Assume average complexity actor weight is 1, and average complexity use case weight is 5.  If the technical complexity factor (TCF) is 0.9 and the environmental complexity factor (ECF) is 1.1, what is the adjusted Use Case Point (UCP)?

Accepted Answer

C. 99

Answer

A. 74.7

Answer

B. 83

Answer

C. 82.17

Answer

D. 91.3

Question 12

A business process involves several steps, including order placement, inventory check, payment processing, and shipping. The order placement takes 5 minutes, inventory check takes 3 minutes, payment processing takes 2 minutes, and shipping takes 7 minutes. If each step is represented as a task in BPMN, and sequence flows connect these tasks, what is the total time represented by the sequence flow in minutes?

Accepted Answer

D. The sequence flow represents the order of tasks, not the time taken.

Answer

A. 5 minutes

Answer

B. 10 minutes

Answer

C. 17 minutes

Question 13

In a UML class diagram, a class 'Customer' has attributes 'customerID' (integer), 'name' (string), and 'address' (string). The 'Customer' class has an association with the 'Order' class. If the multiplicity at the 'Order' end is '0..*', what does this signify?

Accepted Answer

B. A customer can place zero or more orders.

Answer

A. A customer must place at least one order.

Answer

C. A customer can place only one order.

Answer

D. An order must be associated with at least one customer.

Question 14

Which of the following are valid relationships in a UML class diagram?

Answer

A. Association

Answer

B. Generalization

Answer

C. Aggregation

Answer

D. Dependency

Question 15

A software project has the following characteristics: Number of actors = 5, Number of simple use cases = 4, Number of average use cases = 6, Number of complex use cases = 2. Assume actor weight is 1 for simple, 2 for average and 3 for complex. Use case weight is 5 for average, 10 for complex and simple is 1. What is the unadjusted use case point (UUCP)?

Accepted Answer

C. 57

Answer

A. 35

Answer

B. 42

Answer

C. 59

Answer

D. 68

Foundations And Modeling Of Information Systems Practice Practice Tests

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Foundations and Modeling of Information Systems Practice

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