Script Modification PT0-003 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A penetration tester is reviewing a Python script that is supposed to enumerate open ports on a target. The script has the following code snippet: ```python import socket target = "192.168.1.10" for port in range(1, 100): s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(1) result = s.connect_ex((target, port)) if result == 0: print(f"Port {port} is open") s.close() ``` The tester notices that the script is slow because it scans ports sequentially. The tester wants to improve performance by scanning multiple ports concurrently. Which modification should the tester make?

   • AUse the `concurrent.futures` module with a `ThreadPoolExecutor` to run the port scan function in parallel.
   • BUse `socket.gethostbyname()` to resolve the target before the loop.
   • CIncrease the timeout value from 1 second to 5 seconds.
   • DChange the `range(1, 100)` to `range(1, 1000)` to scan more ports.
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2. 7application · medium

   A system administrator is writing a PowerShell script to enumerate all open TCP listening ports on a local Windows machine. The script needs to output the port number and the process ID (PID) that is listening. Which PowerShell cmdlet should the script use to gather this information?

   • A`Get-Service`
   • B`Get-Process`
   • C`Get-NetTCPConnection`
   • D`Get-WmiObject Win32_Process`
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4. 8application · medium

   A penetration tester is writing a Bash script to enumerate HTTP headers from a web server. The script needs to use `curl` to fetch the headers and then extract the `Server` header value. Which Bash command should the tester use to achieve this?

   • A`curl -o headers.txt http://target.com`
   • B`curl -s http://target.com | grep -i 'Server:'`
   • C`curl -X HEAD http://target.com | awk '/Server/'`
   • D`curl -sI http://target.com | grep -i '^Server:'`
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5. 9foundation · easy

   In a Python script used for port scanning, which construct is used to define a block of code that should be executed repeatedly for each port in a list?

   • Awhile port < len(ports):
   • Bfor port in ports:
   • Cif port in ports:
   • Ddef scan(ports):
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6. 10foundation · easy

   A Python enumeration script currently prints results to the console. What modification would allow the results to be saved to a file for later analysis?

   • AChange the print statement to use 'print(..., end='')'.
   • BAdd a 'break' statement to stop the script after printing.
   • CUse the 'open()' function to write the output to a file.
   • DImport the 'sys' library and use 'sys.exit()'.
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