Free Network Defense Essentials (NDE) Exam 112-51 Exam Practice Test

Which of the following algorithms is an iterated block cipher that works by repeating the defined steps multiple times and has a 128-bit block size, having key sizes of 128, 192, and 256 bits?

• DSA
• MD5
• SHA
• AES

Identify the UBA tool that collects user activity details from multiple sources and uses artificial intelligence and machine learning algorithms to perform user behavior analysis to prevent and detect various threats before the fraud is perpetrated.

• Nmap
• ClamWin
• Dtex systems
• Wireshark

Which of the following layers of loT architecture employs protocols and networks for connecting, sending, and receiving data between devices and network?

• Device layer
• Cloud layer
• Communication layer
• Process layer

Amber is working as a team lead in an organization. She was instructed to share a policy document with all the employees working from remote locations and collect them after filling. She shared the files from her mobile device to the concerned employees through the public Internet. An unauthorized user accessed the file in transit, modified the file, and forwarded it to the remote employees.Based on the above scenario, identify the security risk associated with mobile usage policies.

• Lost or stolen devices
• Infrastructure issues
• Improperly disposing of devices
• Sharing confidential data on an unsecured network

Alice purchased a new zip-based document bag and placed white papers related to the academic project.As it contains confidential information, she locked it with a physical security control that requires a sequence of numbers and letters to unlock.Identify the type of physical locking system used by Alice in the above scenario.

• Combination lock
• Mechanical lock
• Electromagnetic lock
• Digital lock

Alice was working on her major project; she saved all her confidential files and locked her laptop. Bob wanted to access Alice's laptop for his personal use but was unable to access the laptop due to biometric authentication.Which of the following network defense approaches was employed by Alice on her laptop?

• Retrospective approach
• Preventive approach
• Reactive approach
• Proactive approach

Which of the following environmental controls options saves the hardware from humidity and heat, increases hardware performance, and maintains consistent room temperature?

• Hot and cold aisles
• Lighting systern
• Temperature indicator
• EMI shielding

Jay, a network administrator, was monitoring traffic flowing through an IDS. Unexpectedly, he received an event triggered as an alarm, although there is no active attack in progress.Identify the type of IDS alert Jay has received in the above scenario.

• True negative alert
• False positive alert
• True positive alert
• False negative alert

Jessica, a user, wanted to access the Internet from her laptop and therefore sends a connection request to the access point. To identify the wireless client, the access point forwarded that request to a RADIUS server.The RADIUS server transmitted authentication keys to both the access point and Jessica's laptop. This key helps the access point identify a particular wireless client.Identify the authentication method demonstrated in the above scenario.

• Shared key authentication
• Null authentication
• Open system authentication
• Centralized authentication

Which of the following IDS components analyzes the traffic and reports if any suspicious activity is detected?

• Command console
• Network sensor
• Database of attack signatures
• Response system