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ISQI ISTQB Certified Tester Advanced Level Test Analyst (CTAL-TA v4.0) Sample Questions:

1. You are developing test cases for an application which performs complex calculations and have decided to model these calculations on a spreadsheet, to determine expected results from inputs.
Which solution to the test oracle problem BEST describes the approach you are using?

A) Metamorphic testing
B) Property-based testing
C) A pseudo-oracle
D) Deterministic testing

2. In which of the following circumstances is the transition from a high-level test case to a low-level test case MOST LIKELY to be deferred from test design to test implementation?

A) When specific test data are needed for the test case
B) When the person who runs the test will not be its author
C) When the details required depend on the test execution schedule
D) When product risk analysis has not been completed

3. You have been appointed to be a TA in the development of a road traffic control application, which will be installed at busy road junctions to control the operation of traffic signal lights according to sensors that detect traffic volume on the various approaches to the junction. The project is still in the early stages of test planning, but it is already clear that despite a tight schedule its safety-critical nature demands careful and thorough testing.
You have been asked to decide whether automated test design would deliver benefits. Which characteristic of automated test design is MOST important for the development of this system?

A) Testware can be generated in various output formats, e.g. for use by different tools
B) Less maintenance effort for the testware after the system has gone live
C) Creating the model will expose defects in the test basis early in the project
D) Testware generated by tools usually contains fewer mistakes than testware created manually

4. 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?

A) Explore the forecasting parameter entry features With their requirements specification To discover any usability issues
B) Explore the actual sales report production features With examples of the current reports To discover any adverse impact of requirement 3 on requirement 2
C) Explore the forecasting parameter entry features With their requirements specification To discover any performance issues
D) Explore the report request entry features With their requirements specification To discover any usability issues

5. A pricing system for determining the postage cost of a company's letters examines two input variables, representing the length L of the envelope in centimeters and the weight W of the letter in grams. Envelopes can only have three lengths: 15 cm Small, 20 cm Standard, and 25 cm Large.
For standard length envelopes, 20 cm, a premium postage rate is applied if the weight is equal to or greater than 50 grams. This is represented as:
IF L = 20 AND W > = 50 THEN RETURN Cost "Premium rate"
Which set of test points, each represented as variables L, W , achieves 100% simplified domain coverage for the Standard letter postage cost domain?

A) (20,50), (20,49), (15,60), (25,60)
B) (20,40), (20,50), (20,60), (15,60), (25,60)
C) (20,50), (20,49), (19,60), (21,60)
D) (20,50), (20,51), (15,60), (25,60)

Solutions: