OMG-OCUP2-FOUND100 Exam Dumps : OMG Certified UML Professional 2 (OCUP 2) - Foundation Level

In UML, the features of a class are the combined set of attributes (properties) and operations (methods) that are defined for that class. A feature is a characteristic that classifiers (like classes) can possess. In the context of UML, operations are considered behavioral features, while attributes are considered structural features.

Let's analyze the given options in the context of the Car class:

A. "drive()" is an operation (method) of the Car class, but "Car" itself is the name of the class, not a feature.

B. "stop()" is an operation of the Car class, but "driver" is a role name for an association, not a feature of the Car class.

C. "name" is an attribute of the Person class, not the Car class. "stop()" is indeed an operation of the Car class.

D. "drive()" and "stop()" are operations of the Car class. "Person" is not a feature of the Car class, but no attributes of the Car class are shown in the diagram, and since features include both operations and attributes, the correct answer from the available options isD. It is understood that operations of a class are features, so the answer includes both operations of the Car class: "drive()" and "stop()".

According to the UML 2 Foundation specification, both structural features (attributes) and behavioral features (operations) are considered features of a class, so the correct answer would be the operations "drive()" and "stop()" since those are the only features explicitly represented in the Car class in the diagram.

State machines are ideal for modeling systems or objects that exhibit distinct states and transitions between them based on events or conditions. Let's analyze why option D is the best fit and why others are less suitable:

• D - Transitions in a Physical System:The transitions between different states of matter (ice, water, steam) are governed by well-defined conditions (changes in temperature and pressure). State machines can effectively represent these states and the rules governing the changes between them.
• Other Options:

References:

• UML Specification (Superstructure) Version 2.5.1: The section on state machines is a primary reference for their capabilities (https://www.omg.org/spec/UML/2.5.1).
• Modeling Guides: Various resources on UML modeling techniques often provide insights into when different diagram types are most appropriate.

In UML, when specifying the value of an attribute in an instance specification (which is what each of these boxes represents), the notation used is generally:

attributeName: Type = Value

Looking at each option provided, we see that they are different representations of numerical values for an attribute namedsalaryof typeReal. Here's how to interpret each representation:

A)-salary: Real = “$10,000.00”- This uses a string representation of the number, which is generally not how numerical values are assigned in UML, especially with the explicit typeReal.

B)-salary: Real = $20,000.00- This is more typical for showing a real number in UML, though the dollar sign is not part of the actual numerical value and should not be included.

C)-salary: Real = 30000.00- This is a correct numeric representation of a real number without unnecessary symbols.

D)-salary: Real = 40,000.00- This is also a correct representation and indeed has the highest numeric value among the options provided.

E)-salary: Real = 500 E 02- This is scientific notation, which is also a valid representation of real numbers in UML. The value represented here is 500 * 10^2, which equals 50,000.00.

After examining each option, the correct answer is D. Option D, because the instancefour:Employeehas the highest value properly assigned to asalaryslot according to the standard UML notation. However, there's a point to be clarified: while UML does not specify formatting of numbers with commas for thousands or currency symbols, it does accept scientific notation. So, if we were strictly interpreting the values as real numbers, Option E would represent the highest numerical value. But considering proper UML formatting and assuming the intent is to use standard decimal notation without currency symbols or commas, Option D is the best answer.