Use Code to Support Automation AT0-001 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A Python script needs to process a list of 1000 IP addresses and check each one for an open port. The check_port(ip) function takes about 1 second per IP. The script currently uses a for loop and takes about 17 minutes. Which modification would most significantly reduce the total runtime?

   • AMove the check_port function into a separate module.
   • BReplace the for loop with a while loop.
   • CUse the threading module to check multiple IPs concurrently.
   • DUse a list comprehension to call check_port for each IP.
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2. 7expert · hard

   A Python script processes a CSV file and writes results to a database. In production, the script occasionally fails with a 'database connection lost' error. The script is run manually by an operator. What is the most robust way to handle this intermittent failure?

   • ARestart the script automatically if it fails using a shell wrapper.
   • BAdd a print statement before the database write to log the current row being processed.
   • CWrap the database write operation in a try-except block and retry the operation up to three times with a short delay.
   • DIncrease the database connection timeout in the connection string.
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4. 8foundation · easy

   Which of the following is a common technique for debugging an automation script?

   • AIncreasing the script's timeout value
   • BAdding print statements to display variable values at key points
   • CRenaming variables to shorter names
   • DRemoving all loops to simplify the code
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5. 9application · medium

   A DevOps engineer maintains a Python script that performs the same 15-line log-parsing routine in three different places. The routine extracts a timestamp and error code from each line, then writes a formatted entry to a report file. To improve maintainability, the engineer decides to refactor. What is the most appropriate action?

   • AUse a while loop to repeat the routine three times, controlled by a counter variable.
   • BCopy the 15-line routine into a separate module and import it in the main script.
   • CDefine a global variable to store the parsed data and reference it in each location.
   • DCreate a function named parse_log_line(line) that returns the timestamp and error code, then call it from each of the three locations.
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6. 10foundation · easy

   What is a best practice for maintaining automation scripts?

   • ARewriting the script from scratch whenever changes are needed
   • BStoring scripts only on a local machine without backup
   • CAvoiding comments to keep the code short
   • DUsing version control to track changes and collaborate
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