Free ATTA sample questions

Correct answer: Performance Efficiency

Placing the most frequently occurring conditions at the beginning of an IF-ELSEIF chain is a performance optimization. It ensures that for the majority of executions, the program evaluates fewer conditions before finding a match, reducing the average execution time. This directly impacts the time behavior sub-characteristic of Performance Efficiency.

Correct answers: Implement an endurance test that simulates typical user activity over a 48-72 hour period.; Use a dynamic analysis tool to monitor the application's memory allocation and garbage collection behavior during the long-running test.

An endurance test (a type of performance test) is specifically designed to uncover issues like memory leaks that only manifest over long periods of sustained activity. This directly simulates the conditions reported by users.

While the endurance test reproduces the failure condition, a dynamic analysis tool (specifically a memory profiler or leak detector) is necessary to monitor memory usage in real-time, identify which objects are not being deallocated, and pinpoint the source of the leak in the code.

Correct answer: It simplifies test script creation for Test Analysts but reduces the reusability of the individual steps for other test scenarios.

Creating a high-level aggregated keyword like 'CreateNewCustomer' makes writing the main test case very simple for a Test Analyst. However, it tightly couples the five individual steps. If another test scenario needs to only 'NavigateToCustomers' and 'EnterDetails' without saving (e.g., to test validation), it cannot reuse those steps from the aggregated keyword. This reduces the modularity and reusability of the underlying automation components.

Correct answer: The application server's CPU is the bottleneck, preventing it from handling more concurrent requests.

The response time is well within the required limit (180ms < 200ms), but the throughput is significantly below the target (350 TPS < 500 TPS). The critical indicator is the CPU utilization at 95%, which means the processor is maxed out and cannot handle more work. This CPU saturation is preventing the system from achieving the target throughput. Memory utilization is low, and there is no data to suggest a network or database issue.

Correct answer: False

Decision coverage is a control-flow testing technique that ensures all branches in the code are exercised. Data flow analysis, which detects UR anomalies, focuses on the lifecycle of variables. It is possible to have 100% decision coverage while still having a data path where a variable is used before initialization. For example, the use of the uninitialized variable could occur within a code block that is fully executed as part of a single branch.

Correct answer: A=T, B=T, C=F (Outcome=T) and A=T, B=F, C=F (Outcome=F)

To show that 'B' independently affects the outcome, 'B' must be the only condition that changes, the other conditions must be held constant, and the overall outcome of the decision must change. In this pair, A is held as True, C is held as False. When B changes from True to False, the outcome changes from True (T && (T || F) -> T) to False (T && (F || F) -> F). This is the correct independence pair for condition B.

Correct answer: Data Caching

Data caching inherently introduces a potential for stale data, which is a consistency problem. While caching significantly improves performance by serving data from a local, faster copy, it creates a challenge in ensuring that the cached data is invalidated or updated when the source data changes. In a system where data consistency is the top priority, the caching strategy (e.g., write-through, write-back, time-to-live) must be rigorously reviewed.

Correct answer: SQL Injection

This attack works by injecting SQL commands into the input field. The `' OR 1=1` clause modifies the WHERE clause of the SQL query to always be true, and the `--` comments out the rest of the original query (like the password check). This allows the attacker to bypass the intended logic of the SQL statement, which is the definition of an SQL Injection attack.

Correct answer: Fault Injection

Fault injection is the process of deliberately introducing errors or failures into a system to test its response. Terminating a server instance is a classic example of injecting a fault into the system's environment to verify its fault tolerance and recoverability mechanisms. This practice is often referred to as Chaos Engineering.

Correct answer: 5

Cyclomatic Complexity can be calculated using the formula M = E - N + 2P, where E is the number of edges, N is the number of nodes, and P is the number of connected components (P=1 here). The graph has 11 nodes (A-K) and 14 edges. So, M = 14 - 11 + 2 = 5. Alternatively, using the simpler formula M = D + 1, where D is the number of decision nodes (nodes with more than one outbound edge). The decision nodes are B, C, F, and G. There are 4 decision nodes. So, M = 4 + 1 = 5.