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112-51 Network Defense Essentials (NDE) Exam Questions and Answers

Questions 4

George, a professional hacker, targeted a bank employee and tried to crack his password while he was attempting to log on to the remote server to perform his regular banking operations. In thisprocess, George used sniffing tools to capture the password pairwise master key (PMK) associated with the handshake authentication process. Then, using the PMK, he gained unauthorized access to the server to perform malicious activities.

Identify the encryption technology on which George performed password cracking.

Options:

A.

WPA3

B.

WPA

C.

WPA2

D.

WEP

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Questions 5

Jacob, a network defender in an organization, was instructed to improve the physical security measures to prevent unauthorized intrusion attempts. In this process, Jacob implemented certain physical security controls by using warning messages and signs that notify legal consequences to discourage hackers from making intrusion attempts.

Which of the following type of physical security controls has Jacob implemented in the above scenario?

Options:

A.

Recovery controls

B.

Detective control

C.

Preventive controls

D.

Deterrent controls

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Questions 6

Which of the following components of VPN is used to manage tunnels and encapsulate private data?

Options:

A.

Remote network

B.

VPN protocol

C.

Network access server

D.

VPN client

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Questions 7

Jacob, an attacker, targeted container technology to destroy the reputation of an organization. To achieve this, he initially compromised a single container exploiting weak network defaults,overloaded the rest of the containers in the local domain, and restricted them from providing services to legitimate users.

Identify the type of attack initiated by Jacob in the above scenario.

Options:

A.

Cross-container attack

B.

Docker registry attack

C.

Container escaping attack

D.

Replay attack

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Questions 8

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.

Options:

A.

Nmap

B.

ClamWin

C.

Dtex systems

D.

Wireshark

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Questions 9

Kevin logged into a banking application with his registered credentials and tried to transfer someamount from his account to Flora's account. Before transferring the amount to Flora's account, the application sent an OTP to Kevin's mobile for confirmation.

Which of the following authentication mechanisms is employed by the banking application in the above scenario?

Options:

A.

Biometric authentication

B.

Smart card authentication

C.

Single sign-on (SSO) authentication

D.

Two-factor authentication

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Questions 10

Peter, a network defender, was instructed to protect the corporate network from unauthorized access. To achieve this, he employed a security solution for wireless communication that uses dragonfly key exchange for authentication, which is the strongest encryption algorithm that protects the network from dictionary and key recovery attacks.

Identify the wireless encryption technology implemented in the security solution selected by Peter in the above scenario.

Options:

A.

WPA

B.

WPA3

C.

EAP

D.

WEP

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Questions 11

Stella, a mobile user, often ignores the messages received from the manufacturer for updates. One day, she found that files in her device are being replaced, she immediately rushed to the nearest service center for inquiry. They tested the device and identified vulnerabilities in it as it ran with an obsolete OS version.

Identify the mobile device security risk raised on Stella's device in the above scenario.

Options:

A.

Application-based risk

B.

System-based risk

C.

Network-based risk

D.

Physical security risks

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Questions 12

An loT sensor in an organization generated an emergency alarm indicating a security breach. The servers hosted in an loT layer accepted, stored, and processed the sensor data received from loT gateways and created dashboards for monitoring, analyzing, and implementing proactive decisions to tackle the issue.

Which of the following layers in the loT architecture performed the above activities after receiving an alert from the loT sensor?

Options:

A.

Device layer

B.

Cloud layer

C.

Process layer

D.

Communication Layer

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Questions 13

Clark, a security professional, was instructed to monitor and continue the backup functions without

interrupting the system or application services. In this process, Clark implemented a backup mechanism that dynamically backups the data even if the system or application resources are being used.

Which of the following types of backup mechanisms has Clark implemented in the above scenario?

Options:

A.

Full backup

B.

Offline backup

C.

Cold backup

D.

Hot backup

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Questions 14

Which of the following techniques is referred to as a messaging feature that originates from a server and enables the delivery of data or a message from an application to a mobile device without any explicit request from the user?

Options:

A.

Push notification

B.

PIN feature

C.

Geofencing

D.

Containerization

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Questions 15

Bob has secretly installed smart CCTV devices (loT devices) outside his home and wants to access the recorded data from a remote location. These smart CCTV devices send sensed data to an intermediate device that carries out pre-processing of data online before transmitting it to the cloud for storage and analysis. The analyzed data is then sent to Bob for initiating actions.

Identify the component of loT architecture that collects data from loT devices and performs data pre-processing.

Options:

A.

Streaming data processor

B.

Gateway

C.

Data lakes

D.

Machine learning

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Questions 16

Kalley, a network administrator of an organization, has installed a traffic monitoring system to capture and report suspicious traffic signatures. In this process, she detects traffic containing password cracking, sniffing, and brute-forcing attempts.Which of the following categories of suspicious traffic signature were identified by Kalley through the installed monitoring system?

Options:

A.

Reconnaissance signatures

B.

Unauthorized access signatures

C.

Denial-of-service (DoS) signatures

D.

Informational signatures

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Questions 17

Finch, a security auditor, was assigned the task of providing devices to all the employees to enable work from remote locations. Finch restricted the devices to work only for organization-relatedtasks, and not for personal use.

Which of the following mobile usage policies has Finch implemented in the above scenario?

Options:

A.

CYOD

B.

COBO

C.

COPE

D.

BYOD

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Questions 18

Stephen, a security specialist, was instructed to identify emerging threats on the organization's network. In

this process, he employed a computer system on the Internet intended to attract and trap those who

attempt unauthorized host system utilization to penetrate the organization's network.

Identify the type of security solution employed by Stephen in the above scenario.

Options:

A.

Firewall

B.

Honeypot

C.

IDS

D.

Proxy server

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Questions 19

Which of the following solutions is a software or a hardware device on a network or host that filters the incoming and outgoing traffic to prevent unauthorized access to private networks?

Options:

A.

Firewall

B.

Router

C.

Hub

D.

Switch

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Questions 20

Identify the loT communication model that serves as an analyzer for a company to track monthly or yearly energy consumption. Using this analysis, companies can reduce the expenditure on energy.

Options:

A.

Device-to-device model

B.

Cloud-to-cloud model

C.

Device-to-cloud model

D.

Device-to-gateway model

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Questions 21

John, from a remote location, was monitoring his bedridden grandfather's health condition at his home. John has placed a smart wearable ECG on his grandfather's wrist so that he can receive alerts to his mobile phone and can keep a track over his grandfather's health condition periodically.

Which of the following types of loT communication model was demonstrated in the above scenario?

Options:

A.

Device-to-gateway model

B.

Device-to-cloud model

C.

Cloud-to-cloud communication model

D.

Device-to-device model

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Questions 22

Which of the following types of network segmentation is an easy approach to divide a network but can be expensive as it occupies more space?

Options:

A.

VLAN segmentation

B.

Logical segmentation

C.

Network virtualization

D.

Physical segmentation

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Exam Code: 112-51
Exam Name: Network Defense Essentials (NDE) Exam
Last Update: Jun 12, 2025
Questions: 75

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