Crucial Exams

CompTIA Linux+ XK0-006 (V8) Practice Question

While testing file transfers from a workstation behind the company's stateful firewall, you confirm that users can successfully authenticate to an external FTP server but every directory listing and file upload fails when the server is set to active mode. The firewall permits only outbound connections that originate from the internal network and blocks unsolicited inbound traffic. Which technical behavior of active FTP best explains why the transfers are failing?

  • Active mode attempts to use UDP instead of TCP for the control channel, and the firewall therefore drops the traffic.

  • Active mode encrypts the data channel with SSL/TLS, causing the firewall to reject the traffic because it cannot inspect the payload.

  • The client must first open a connection to server port 20, but the firewall blocks any outbound connection to ports below 1024.

  • The FTP server initiates the data connection from its TCP port 20 to a random high port on the client, so the firewall blocks the unsolicited inbound traffic.

CompTIA Linux+ XK0-006 (V8)
Security
Your Score:
Settings & Objectives
Random Mixed
Questions are selected randomly from all chosen topics, with a preference for those you haven’t seen before. You may see several questions from the same objective or domain in a row.
Rotate by Objective
Questions cycle through each objective or domain in turn, helping you avoid long streaks of questions from the same area. You may see some repeat questions, but the distribution will be more balanced across topics.

Check or uncheck an objective to set which questions you will receive.

Wipe Score
Bash, the Crucial Exams Chat Bot
AI Bot