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Free CyberSec First Responder (CFR) Exam Practice Questions

Question # 21

When performing a vulnerability assessment from outside the perimeter, which of the following network devices is MOST likely to skew the scan results?

Options:

A.  

Access Point

B.  

Router

C.  

Firewall

D.  

IDS

E.  

Switch

Discussion 0
Question # 22

Which of the following tools can help to detect suspicious or unauthorized changes to critical system configuration files?

Options:

A.  

Tripwire

B.  

Logstash

C.  

Nessus

D.  

Netcat

E.  

Ifconfig

Discussion 0
Question # 23

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?

Options:

A.  

Taunt the user and then trigger a shutdown every 15 minutes.

B.  

Taunt the user and then trigger a reboot every 15 minutes.

C.  

Taunt the user and then trigger a shutdown every 900 minutes.

D.  

Taunt the user and then trigger a reboot every 900 minutes.

Discussion 0
Question # 24

An administrator believes that a system on VLAN 12 is Address Resolution Protocol (ARP) poisoning clients on the network. The administrator attaches a system to VLAN 12 and uses Wireshark to capture traffic. After

reviewing the capture file, the administrator finds no evidence of ARP poisoning. Which of the following actions should the administrator take next?

Options:

A.  

Clear the ARP cache on their system.

B.  

Enable port mirroring on the switch.

C.  

Filter Wireshark to only show ARP traffic.

D.  

Configure the network adapter to promiscuous mode.

Discussion 0
Question # 25

Which of the following attack vectors capitalizes on a previously undisclosed issue with a software application?

Options:

A.  

Zero-Day Exploit

B.  

Brute Force

C.  

Misconfiguration

D.  

Ransomware

E.  

Phishing

Discussion 0
Question # 26

During the forensic analysis of a compromised computer image, the investigator found that critical files are missing, caches have been cleared, and the history and event log files are empty. According to this scenario, which of the following techniques is the suspect using?

Options:

A.  

System hardening techniques

B.  

System optimization techniques

C.  

Defragmentation techniques

D.  

Anti-forensic techniques

Discussion 0
Question # 27

A security administrator is investigating a compromised host. Which of the following commands could the investigator use to display executing processes in real time?

Options:

A.  

ps

B.  

top

C.  

nice

D.  

pstree

Discussion 0
Question # 28

If an organization suspects criminal activity during the response to an incident, when should they notify law enforcement authorities?

Options:

A.  

After one day of network downtime.

B.  

According to a pre-defined cost threshold.

C.  

As soon as criminal activity is suspected.

D.  

After the criminal activity is confirmed.

Discussion 0
Question # 29

The Key Reinstallation Attack (KRACK) vulnerability is specific to which types of devices? (Choose two.)

Options:

A.  

Wireless router

B.  

Switch

C.  

Firewall

D.  

Access point

E.  

Hub

Discussion 0
Question # 30

A forensic analyst has been tasked with analyzing disk images with file extensions such as .001, .002, etc. Which of the following disk imaging tools was MOST LIKELY used to create these image files?

Options:

A.  

Encase

B.  

ExifTool

C.  

SIFT

D.  

FTK

E.  

dd

Discussion 0

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