Smartly Prepare Exam with Free Online 112-51 Practice Test

We offer the latest 112-51 practice test designed for free and effective online Network Defense Essentials certification preparation. It's a simulation of the real 112-51 exam experience, built to help you understand the structure, complexity, and topics you'll face on exam day.

Exam Code: 112-51
Exam Questions: 75
Network Defense Essentials
Updated: 08 Jul, 2025
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Practicing : 1 - 5 of 75 Questions
Question 1

Which of the following algorithms uses a sponge construction where message blocks are XORed into the initial bits of the state that the algorithm then invertible permutes?

Options :
Answer: C

Question 2

Messy, a network defender, was hired to secure an organization's internal network. He deployed an IDS in which the detection process depends on observing and comparing the observed events with the normal behavior and then detecting any deviation from it. Identify the type of IDS employed by Messy in the above scenario.

Options :
Answer: C

Question 3

Clark, a security team member of an organization, was instructed to secure the premises from unauthorized entries. In this process, Clark implemented security controls that allow employees to enter the office only after scanning their badges or fingerprints. Which of the following security controls has Clark implemented in the above scenario?

Options :
Answer: C

Question 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 :
Answer: C

Question 5

James was recruited as security personnel in an organization and was instructed to secure the organization's infrastructure from physical threats. To achieve this, James installed CCTV systems near gates, reception, hallways, and workplaces to capture illicit activities inside the premises, identify activities that need attention, collect images as evidence, and aid in an alarm system. Identify the type of physical security control implemented by James in the above scenario.

Options :
Answer: A

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Practicing : 1 - 5 of 75 Questions

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