An Engineer Received a Call to Assist with an Ongoing

question 18

Multiple Choice

An engineer received a call to assist with an ongoing DDoS attack. The Apache server is being targeted, and availability is compromised. Which step should be taken to identify the origin of the threat?

• A) An engineer should check the list of usernames currently logged in by running the command $ who | cut -d' ' -f1| sort | uniq An engineer should check the list of usernames currently logged in by running the command $ who | cut -d' ' -f1| sort | uniq
• B) An engineer should check the server's processes by running commands ps -aux and sudo ps -a . An engineer should check the server's processes by running commands ps -aux and sudo ps -a .
• C) An engineer should check the services on the machine by running the command service -status-all . An engineer should check the services on the machine by running the command service -status-all
• D) An engineer should check the last hundred entries of a web server with the command sudo tail -100 /var/log/apache2/access.log . An engineer should check the last hundred entries of a web server with the command sudo tail -100 /var/log/apache2/access.log

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Definitions:

Myosin

A type of protein found in muscle tissue as a thick filament that plays a key role in muscle contraction and movement.

Sarcolemma

Plasma membrane of a muscle fiber; also forms the tubules of the T system involved in muscular contraction.

Plasma Membrane

The lipid bilayer that surrounds a cell, regulating the passage of substances in and out of the cell.

Muscle Fiber

A single muscle cell, typically long and cylindrical, which contracts to produce movement.