A Penetration Tester Ran an Nmap Scan on an Internet-Facing

question 36

Multiple Choice

A penetration tester ran an Nmap scan on an Internet-facing network device with the -F option and found a few open ports. To further enumerate, the tester ran another scan using the following command: nmap -O -A -sS -p- 100.100.100.50 Nmap returned that all 65,535 ports were filtered. Which of the following MOST likely occurred on the second scan?

• A) A firewall or IPS blocked the scan.
• B) The penetration tester used unsupported flags.
• C) The edge network device was disconnected.
• D) The scan returned ICMP echo replies.

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Definitions:

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A United Nations initiative to encourage businesses worldwide to adopt sustainable and socially responsible policies and to report on their implementation.

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The method of assessing and selecting between options in a way that aligns with moral standards.

Benefits and Costs

The positive outcomes and expenses or disadvantages associated with a decision, investment, or action, considered in evaluation or analysis.

UN Global Compact

An initiative aimed at encouraging businesses worldwide to adopt sustainable and socially responsible policies, and to report on their implementation.