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A function-local variable is normally intended to be private to that function invocation.
Correct Answer: A
Answer Option (Which option is correct) A. True
Explanation:
Local scope prevents unintended access through a shared global name.
Why the other options are incorrect:
B. False:
False denies the usual local-scope behavior. Function assignments normally use a local namespace. They do not automatically change global variables.
References:
Python: functions and control flow
Python: built-in types
An environment variable supplies retries="3". Choose TWO safe handling steps.
Correct Answer: A, D
Answer Option (Which option is correct) A. Convert the value before arithmetic
Answer Option (Which option is correct) D. Validate that the value is numeric
Explanation:
The environment supplies "3" as text, so it must be converted to a numeric type before addition or comparison. Option A makes arithmetic operate on a number. Option D checks that the supplied text represents an acceptable numeric value before conversion and use, so invalid input produces a clear error rather than unintended string processing.
Why the other options are incorrect:
B. Concatenate "1" to increase numerically:
Concatenation joins text rather than adding numbers. Appending a digit produces a different string. Numeric conversion must precede arithmetic.
C. Treat all strings as already numeric:
Strings retain their text type until converted. Their numeric-looking contents do not change that type. Treating them as integers can cause errors or wrong results.
References:
Python: functions and control flow
Python: built-in types
A script must run a cleanup action only when free space is below 10 percent. Which structure fits?
Correct Answer: A
Answer Option (Which option is correct) A. Conditional statement
Explanation:
A conditional statement evaluates whether free space is below the threshold before running cleanup. The action belongs inside the branch whose condition is true. This implements the requirement that cleanup must not run when sufficient space remains.
Why the other options are incorrect:
B. Unconditional loop:
An unconditional loop repeats without requiring low space. It lacks the stated threshold decision. Cleanup could run when it is unnecessary.
C. Git tag:
A Git tag identifies a repository revision. It does not evaluate free disk space. Naming code cannot replace the cleanup condition.
D. Package lock:
A package lock records dependency resolution information. It does not control whether this cleanup executes. The script still needs a threshold check.
References:
Python: functions and control flow
Python: built-in types
A script must run a cleanup action only when free space is below 10 percent. Which structure fits?
Correct Answer: A
Answer Option (Which option is correct) A. Conditional statement
Explanation:
A conditional statement evaluates whether free space is below the threshold before running cleanup. The action belongs inside the branch whose condition is true. This implements the requirement that cleanup must not run when sufficient space remains.
Why the other options are incorrect:
B. Unconditional loop:
An unconditional loop repeats without requiring low space. It lacks the stated threshold decision. Cleanup could run when it is unnecessary.
C. Git tag:
A Git tag identifies a repository revision. It does not evaluate free disk space. Naming code cannot replace the cleanup condition.
D. Package lock:
A package lock records dependency resolution information. It does not control whether this cleanup executes. The script still needs a threshold check.
References:
Python: functions and control flow
Python: built-in types
A reusable backup function needs a different destination for each caller. What should it accept?
Correct Answer: B
Answer Option (Which option is correct) B. A destination parameter
Explanation:
A destination parameter lets each caller provide its own backup location while using the same function. The function can validate that input before writing data. Keeping the destination outside the shared implementation avoids a separate hardcoded function for every caller.
Why the other options are incorrect:
A. A commit hash only:
A commit hash identifies a source revision. It does not specify a backup destination by itself. The caller needs an explicit destination input.
C. A syntax error:
A syntax error prevents valid execution. It is not a function input design. Introducing one would break the backup workflow.
D. A hardcoded global destination:
A hardcoded global destination fixes shared configuration outside the call. Different callers cannot supply destinations independently through it. A parameter provides the required flexibility.
References:
Python: functions and control flow