我々の商品の質量を保証するために、専門家たちは商品の開発を研修しています。過去の試験のデータを基づいて、CTAL-TA_V4.0問題集を開発しています。現在でも、問題集の更新に働いています。複数の更新を通して、今の的中率高いCTAL-TA_V4.0問題集になりました。我々のCTAL-TA_V4.0問題集で試験に合格することができると信じています。
| Section | Objectives |
|---|---|
| Topic 1: The Tasks of the Test Analyst in Risk-Based Testing | - Risk Analysis - Risk Control |
| Topic 2: Software Defect Prevention | - Mitigating Recurrence of Defects - Defect Prevention Practices - Supporting Phase Containment |
| Topic 3: Testing Quality Characteristics | - Compatibility Testing - Functional Testing - Flexibility Testing - Usability Testing |
| Topic 4: Test Analysis and Test Design | - Experience-based Testing - Data-Based Test Techniques - Behavior-Based Test Techniques - Rule-Based Test Techniques |
| Topic 5: The Tasks of the Test Analyst in the Test Process | - Involvement in Test Activities - Testing in the Software Development Lifecycle - Tasks Related to Work Products |
CTAL-TA_V4.0試験問題の99％の合格率を確保できます。 CTAL-TA_V4.0学習ガイドを使用すると、CTAL-TA_V4.0試験に合格できます。そして、ISQIはあなたが想像できる正しいことです。必ずCTAL-TA_V4.0認定を希望します。そこで、CTAL-TA_V4.0試験資料と同じくらい優れたツールを使用して、わずか20〜30時間勉強して練習してから試験に合格してみませんか。さまざまなバージョンのISTQB Certified Tester Advanced Level Test Analyst (CTAL-TA v4.0)試験ブレーンダンプを使用すると、いつでもどこでも勉強と練習ができます。
質問 # 13
A simple drinks machine is described in the following state transition diagram:
How many test cases will be needed for Chow's 1-switch coverage?
正解：A
解説：
The correct answer is C , because Chow's 1-switch coverage requires every valid sequence of two consecutive transitions to be covered. CTAL-TA v4.0 states that N-switch coverage applies to valid sequences of N+1 consecutive transitions , and specifically defines a 1-switch as a pair of incoming and outgoing transitions at a state.
Count the possible incoming-transition/outgoing-transition pairs at each state:
* S1 has 2 incoming transitions: clear, take drink, and 2 outgoing transitions: coffee, tea.
So, 2 × 2 = 4 1-switches.
* S2 has 4 incoming transitions: coffee, tea, dispensed from sugar, dispensed from milk, and 4 outgoing transitions: clear, sugar, milk, vend.
So, 4 × 4 = 16 1-switches.
* S3 has 1 incoming transition and 1 outgoing transition: 1 × 1 = 1 .
* S4 has 1 incoming transition and 1 outgoing transition: 1 × 1 = 1 .
* S5 has 1 incoming transition and 1 outgoing transition: 1 × 1 = 1 .
Total = 4 + 16 + 1 + 1 + 1 = 23 .
Therefore, the minimum quantity needed for full Chow's 1-switch coverage is 23 . Reference: CTAL-TA v4.
0, Section 3.2.2 State Transition Testing , N-switch coverage.
質問 # 14
A written specification describes the rules for granting membership of your company's sports facility, whether it must be paid for if granted and whether free transport to and from the facility will be provided.
These actions depend upon employment status (permanent, temporary or probationary), the result of a medical exam (passed, failed or not taken) and whether the person is classed as a local resident. The best decision table that could be created from this specification is shown below.
Which of the following conclusions is correct?
正解：D
解説：
The correct answer is A because the decision table has the correct structural completeness, but it exposes missing rules in the written specification. There are three condition dimensions: employment status has three values, medical exam has three values, and local residency has two values. Therefore, the complete decision table requires 3 × 3 × 2 = 18 rule columns , and the table contains exactly 18 rules. The unresolved entries appear in rules 17 and 18 , where the person is probationary , the medical exam is not taken , and local residency is either yes or no . Since all action cells for these two combinations are marked with question marks, the model has revealed that the specification does not define the required behavior for those cases.
CTAL-TA v4.0 places decision table testing under rule-based test techniques and states that it is used when behavior is determined by combinations of conditions, such as business rules. It is especially useful for finding omissions, inconsistencies, ambiguities, and gaps in rule specifications. Option B is wrong because the table has the correct number of columns. Option C is wrong because models are deliberately used to clarify text-based specifications. Option D is wrong because a decision table is the correct model type for condition-action business rules. Reference: CTAL-TA v4.0, Section 3.3.1 Decision Table Testing .
質問 # 15
You are working on a project to build a purchasing system. The main requirements for the system are that it shall:
* Allow users to enter details of items that they wish to have purchased and, from these details, create a purchase request.
* Take each purchase request through a workflow that will allow the requestor's line manager to approve the request, reject it or return it for clarification / modification.
* Forward approved requests to the Purchasing Department.
* Allow purchasers to find the best available supplier for each approved request and place the request on that supplier as a purchase order.
The solution is being developed according to the company's traditional V-model methodology. The requirements are clearly documented and include a business process model.
The main release has now been live for three months and you are working on the first maintenance release.
The test manager has asked you, the senior TA, to identify those parts of the test process which were most and least effective at finding defects in the main release.
You have collected statistics for the independent test activities, i.e. excluding developers' testing, including only the 178 defects in the three highest of your five defect severity levels. The results are presented in the table below:
Assume that all defects not found at the first opportunity could have been, e.g. that all defects that escaped into acceptance testing were within the scope and objectives of system testing. By applying Defect detection percentage (DDP) analysis, which test activity was LEAST effective?
正解：B
解説：
The correct answer is B . CTAL-TA v4.0 explains that Defect Detection Percentage is used to evaluate how effectively a test level or activity detects defects, and a low DDP indicates a high percentage of escaped defects, meaning the activity was ineffective and should be analyzed for improvement. The official CTAL-TA sample-answer material gives the formula as DDP = D / (D + E) , where D is defects detected in that phase and E is defects that escaped that phase and were detected later.
For test analysis including requirements review , only requirements defects are in scope at the first opportunity. It found 13 requirements defects, while 52 requirements defects escaped and were found later: 12 in test design, 20 in system testing, 10 in acceptance testing, and 10 in live operation. Therefore, DDP = 13 / (13 + 52) = 13 / 65 = 20% .
For comparison, test design found 40 of the 100 defects it could have found, so DDP = 40% . System testing found 75 of 125 possible remaining defects, so DDP = 60% . Acceptance testing found 25 of 50 possible remaining defects, so DDP = 50% . The lowest DDP is therefore test analysis, including requirements review . Reference: CTAL-TA v4.0, Section 5.3.1 Analyzing Test Results to Improve Defect Detection .
質問 # 16
Your project is developing an application to process claims against insurance policies. Which of the following is a good example of CRUD completeness testing?
正解：C
解説：
The correct answer is C because CRUD completeness testing is a static activity. CTAL-TA v4.0 defines CRUD as create, read, update, and delete, and states that CRUD testing verifies the lifecycle of data entities processed by the test item. The syllabus distinguishes two parts: CRUD completeness testing , which statically verifies whether all possible CRUD operations occur for every entity, and CRUD consistency testing , which dynamically checks whether functions interact correctly when handling the entity.
For an insurance-claims application, the key entity is the claim . A technical review checking whether the architecture/specification includes the ability to create, read, update, and delete claim records directly matches CRUD completeness. It is concerned with whether the full claim lifecycle has been included, not whether the lifecycle behaves correctly during execution. Option A is a strong example of CRUD consistency testing because it executes a lifecycle sequence and checks post-delete behavior. Option B is also dynamic execution, so it is not the best match for completeness. Option D is requirements elicitation completeness, not specifically CRUD completeness for the implemented claim entity. Reference: CTAL-TA v4.0, Section 3.2.1 CRUD Testing .
質問 # 17
You are working on a project to replace an old sales and merchandising system with a new system that will be based on modern platforms. The old system is still in production but is poorly documented and expensive to maintain. The new version will be developed using modern technology. The main requirements for the system are that it shall:
* Load sales data, sent electronically from the stores each evening, into a central database.
* Produce actual sales reports for the merchandisers, whose job is to manage stock levels in stores.
* Produce sales forecast reports based on a combination of sales history and forecasting parameters. The parameters will be entered by the merchandisers into a browser-based front end and the reports will be produced overnight. The users will be able to see the reports next day, on screen or in print, by requesting this through the browser.
Requirements 1 and 2 are satisfied by the existing system and will be rewritten with no significant changes.
Requirement 3 is new and has been clearly specified.
The entry of forecasting parameters and of requests to see the reports will be low volume, but the Merchandising Manager is concerned about usability because the forecasting parameters are complex.
Which test charter would be BEST for the initial exploratory testing of requirement 3?
正解：B
解説：
The correct answer is C . CTAL-TA v4.0 describes a session-based exploratory test charter as a focused mission, commonly structured as Explore [target] With [resources] To discover [information] . The charter should focus the tester's limited exploratory effort on the highest-value area, using suitable resources and a clear discovery objective. The syllabus includes test charters supporting session-based testing under test analysis and design.
Here, the relevant new functionality is Requirement 3 , especially the entry of complex forecasting parameters through a browser-based front end. The Merchandising Manager's explicit concern is usability , not functional correctness of the existing actual sales reports and not performance. The scenario also states that entry of forecasting parameters and report requests will be low volume , which weakens performance as the initial exploratory objective.
Option A targets report request entry, but the problem statement says the complexity and concern are around forecasting parameters , not the act of requesting a report. Option B targets Requirement 2, the existing actual sales report production, rather than the new Requirement 3 functionality. Option D uses the right target but the wrong objective: performance is not the main stated risk for this initial exploratory session. Reference:
CTAL-TA v4.0, Section 3.4.1 Test Charters Supporting Session-Based Testing and Section 4.2 Usability Testing .
質問 # 18
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