CertNexus CFR-310 Exam Actual Questions

A network security analyst has noticed a flood of Simple Mail Transfer Protocol (SMTP) traffic to internal clients. SMTP traffic should only be allowed to email servers. Which of the following commands would stop this attack? (Choose two.)

Correct Answer: AC 🗳️

A secretary receives an email from a friend with a picture of a kitten in it. The secretary forwards it to the ~COMPANYWIDE mailing list and, shortly thereafter, users across the company receive the following message:
“You seem tense. Take a deep breath and relax!”
The incident response team is activated and opens the picture in a virtual machine to test it. After a short analysis, the following code is found in C:
\Temp\chill.exe:Powershell.exe –Command “do {(for /L %i in (2,1,254) do shutdown /r /m Error! Hyperlink reference not valid.> /f /t / 0 (/c “You seem tense. Take a deep breath and relax!”);Start-Sleep –s 900) } while(1)”
Which of the following BEST represents what the attacker was trying to accomplish?

Correct Answer: B 🗳️

A Linux system administrator found suspicious activity on host IP 192.168.10.121. This host is also establishing a connection to IP 88.143.12.123. Which of the following commands should the administrator use to capture only the traffic between the two hosts?

Correct Answer: B 🗳️

After imaging a disk as part of an investigation, a forensics analyst wants to hash the image using a tool that supports piecewise hashing. Which of the following tools should the analyst use?

Correct Answer: A 🗳️