CBAP Practice Exam #4

You are reviewing the DFD below. You notice that Process 2.1 receives two data flows from external entities but has no outgoing data flows to other processes or data stores. According to DFD best practices and BABOK requirements modeling, what is your next step?

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Document the process as a terminal data sink.

Identify the missing output and the stakeholder who requires it.

Convert the process into a Data Store.

Validate the process as a 'Black Hole' requirement.

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Explanation

Scenario: Looking at the process model provided, the BA observes a Parallel Gateway (AND) that splits into two tasks, but only one task returns to an Exclusive Gateway (OR) before the end event. What is the logic error here?

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The model will result in a "deadlock" where the process never completes.

The model contains a "lack of synchronization" error.

The Exclusive Gateway should be a Join Gateway.

There is no error; the logic allows for optional task completion.

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Explanation

In the following diagram, a "Purchase Request" enters an Exclusive (XOR) Gateway. One path is labeled "Amount > 500" and the other is labeled "Department = Finance." If a Finance employee submits a 600 request, which path is taken?

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Both paths (Parallel execution)

The first path it reaches (Non-deterministic error)

The process stops because the logic is not mutually exclusive

It follows the "Default" path

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Explanation

Look at the task "Verify Application." A Non-interrupting Boundary Timer is attached to it, leading to a "Send Reminder" task. If the timer triggers, what happens to the "Verify Application" task?

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It is cancelled immediately

It continues running while the reminder is sent

It pauses until the reminder is received

It restarts from the beginning

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Explanation

The BA needs to show the contractual agreement and handoffs between two separate organizations without showing their internal private processes. Which diagram element is most appropriate?

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A single Pool with multiple Lanes

A Choreography Task within a Choreography Diagram

A Black-box Pool with Message Flows

A Sub-process with Data Objects

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Explanation

In this Level 1 DFD, "Process 3.2" is shown with three outgoing arrows labeled "Invoice," "Receipt," and "Ledger Update," but no incoming arrows. How should the BA correct this?

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Label it a "Data Source"

Identify the missing input data required to generate those outputs

Convert it to an External Entity

Nothing; some processes are self-starting

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Explanation

The diagram shows the "Online Banking System" at the center. An arrow points from the "Tax Authority" entity to the system. What does this arrow represent in terms of requirements?

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A functional requirement for the system to calculate taxes

An external interface requirement for data being provided to the system

A database table within the system

A business goal

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Explanation

Based on the ERD above, a Teacher instructs many Students, and a Student has many Teachers. To track the "Grade" a specific teacher gave a specific student, where should the "Grade" attribute be placed?

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In the Teacher entity

In the Student entity

In a new Associative Entity called "Enrollment"

It should be a global variable

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In this Class Diagram, "Corporate Account" and "Individual Account" both point with an open-head arrow to "Bank Account." What does this imply about the attributes of "Bank Account"?

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They are unique to the Corporate Account

They are inherited by both sub-types

They are deprecated

They are private and cannot be seen by sub-types

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The "Order" state diagram shows transitions: New -> Pending -> Shipped -> Delivered. There is no transition from Shipped -> Cancelled. If a customer cancels an order that is already on the delivery truck, what must the BA do to the model?

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Add a transition from "Shipped" to "Cancelled" with a trigger "Return to Warehouse"

Tell the customer it is impossible

Delete the "Shipped" state

Create a new "Error" state

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In the diagram above, a solid line with a filled arrow head goes from the "UI" to the "Database," and the "UI" box stays shaded (active) until a dashed line returns. What does this shaded box represent?

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The system is idle

An "Activation Bar" indicating the object has control of the focus

A system crash

A data store

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Using the Decision Tree above, "Path A" has a 70% success rate 200k and a 30% failure rate -50k. What is the Expected Monetary Value (EMV) the BA should report?

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$150,000

$125,000

$140,000

$115,000

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The "Fishbone" diagram shows branches for "People," "Process," and "Technology." Under "Technology," the BA has listed "Slow Login." What is the next step according to BABOK?

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Fix the login speed immediately

Use the "5 Whys" to dig deeper into why the login is slow

Blame the IT department

Remove the "Technology" branch

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Explanation

In the diagram, "Request Help" Extends "Place Order." There is a note: Extension Point: If user is inactive for 2 minutes. Does the "Request Help" use case always run?

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Yes, every time an order is placed

No, only if the Actor clicks a "Help" button

No, only when the condition at the extension point is met

Only if the "Place Order" use case fails

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Explanation

In the provided RTM, Requirement 1.1 is traced to Test Case 50 and Code Module A. However, Requirement 1.2 has no linked Test Case. As a BA, what is your primary concern?

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The requirement is too complex

The requirement is gold-plating

The code is missing

Lack of "Forward Traceability" (The requirement cannot be verified)

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You see a "Spider Chart" (Radar Chart) comparing two software vendors. Vendor A is far from the center on "Price" but close to the center on "Security." Vendor B is the opposite. If "Security" is a "Must-Have," which vendor is preferred?

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Vendor A

Vendor B

Both

Neither

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A "Mind Map" has a central node "New Website Features" with 50 branches. What should the BA do to make this useful for requirements?

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Delete 25 branches

Print it on a larger paper

Group the branches into logical themes or high-level requirements

Convert it to code

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A "Fishbone Diagram" identifies "Software Bug" as a root cause. The BA wants to know how many times this bug occurs compared to other causes. Which tool should they use next?

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Pareto Chart

Use Case

Data Model

SWOT Analysis

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An "Organization Chart" shows a "Matrix" structure where a BA reports to both a Functional Manager and a Project Manager. What risk should the BA plan for?

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Having too much work

Getting two paychecks

Conflicting priorities and communication overhead

No risk

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You are presented with a "Value Stream Map" where the "Wait Time" between two steps is 48 hours, but the "Processing Time" is 10 minutes. Where should the BA focus improvement?

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Speeding up the 10-minute task

Reducing the 48-hour wait time (Non-value-add time)

Hiring more people for the second step

Automating the processing time

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Explanation

A "Sequence Diagram" shows a long vertical dashed line under an object. What is this line called?

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Lifeline

Execution Occurence

Message Flow

Boundary

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A BA uses a "State Machine Diagram" to model a "Bank Account." The account can move from "Active" to "Closed," but there is no path from "Closed" to "Active." A stakeholder says customers often reopen accounts. What does the BA do?

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Tell the stakeholder it's impossible

Create a new Use Case

Ignore it; "Closed" is always a final state

Add a transition line from "Closed" to "Active"

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Explanation

In a "Decision Tree," a leaf node shows a "Negative Expected Value." What should the BA recommend?

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Pursue that path anyway

Avoid that business path or seek ways to mitigate the loss

Change the math

Use a different diagram

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A "Decision Table" has 4 conditions, each with "Yes/No" options. How many rules (columns) should the table ideally have to be complete?

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4

8

$16 (2^4)$

10

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What is the primary purpose of a "Class Diagram" compared to an "ERD"?

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Class diagrams show both data (attributes) and behavior (methods/operations)

ERDs are more colorful

Class diagrams are only for Agile projects

ERDs show process flows

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A BA identifies that a "User" can have multiple "Email Addresses." In a logical data model, how is this handled?

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Creating columns Email1, Email2, Email3

Creating a separate "Email" entity linked to the "User" entity

Putting all emails in one field separated by commas

Limiting users to one email

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A relationship is marked as "Optional" on one side (a circle) and "Mandatory" on the other (a dash). This is an example of:

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Metadata

Optionality/Modality

Foreign Keys

Normalization

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An attribute "Age" is found in a "Customer" entity. Why might a BA recommend changing this to "Date of Birth"?

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"Age" is a derived attribute that changes constantly; "Date of Birth" is static data

"Date of Birth" is shorter

"Age" is not a valid attribute

To save server space

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On an ERD, you see a line between "Order" and "Product" with a "Crow's Foot" on both ends. What is the BA's next step?

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Implement the database immediately

Resolve the Many-to-Many relationship by creating an "Associative Entity" (e.g., Order_Items)

Delete the "Product" entity

Change the cardinality to 1:1

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Explanation

A Use Case diagram shows a boundary box. One Actor is inside the box, and three are outside. What is the error?

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There should be more Actors inside

Actors should never be inside the system boundary

The box should be a circle

There is no error

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