During an engagement, a penetration tester needs to break the key for the Wi-Fi network that uses WPA2 encryption. Which of the following attacks would accomplish this objective?

A penetration tester gains access to a Windows machine and wants to further enumerate users with native operating system credentials. Which of the following should the tester use?

A penetration tester runs a vulnerability scan that identifies several issues across numerous customer hosts. The executive report outlines the following information: Server High-severity vulnerabilities 1. Development sandbox server 32 2. Back office file transfer server 51 3. Perimeter network web server 14 4. Developer QA server 92 The client is concerned about the availability of its consumer-facing production application. Which of the following hosts should the penetration tester select for additional manual testing? 

A penetration tester needs to confirm the version number of a client's web application server. Which of the following techniques should the penetration tester use? 

During a security assessment, a penetration tester gains access to an internal server and manipulates some data to hide its presence. Which of the following is the best way for the penetration tester to hide the activities performed?