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Eccouncil 112-51 Exam Questions
- Topic 1: Network Security Fundamentals: This component assesses an IT professional's knowledge of the principles behind network security, as well as the dangers and weaknesses connected to networks. This section aims to provide network engineers and security experts with an understanding of the various network security protocols, their purposes, and the ways in which they contribute to the overall security of the network.
- Topic 2: Identification, Authentication, and Authorization: This part addresses the basic concepts, jargon, and models associated with identifying, authenticating, and authorizing users and systems in a network environment. It is intended for security administrators and access control managers.
- Topic 3: Identity and Access Management (IAM) Concepts: An overview of IAM concepts, components, and their function in network resource security is given in this section for security architects and IAM administrators.
- Topic 4: Administrative Controls for Network Security: This section gives an overview of IAM ideas, components, and its function in network resource security for security architects and IAM administrators.
- Topic 5: Administrative Controls for Network Security: This section addresses the creation and application of security policies, standards, processes, and recommendations for compliance officers and security policy makers to safeguard network assets. It also entails being aware of the legal and regulatory frameworks around network security.
- Topic 6: Physical Controls for Network Security: This section highlights the significance of physical security measures for safeguarding network infrastructure and data, especially for physical security workers and building managers. It addresses several physical security measures and how to apply them.
- Topic 7: Technical Controls for Network Security: This section is intended for network engineers and security architects and focuses on technical safeguards for network systems and data.
Free Eccouncil 112-51 Exam Actual Questions
Note: Premium Questions for 112-51 were last updated On Jul. 21, 2025 (see below)
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.
WPA3 is the latest standard of Wi-Fi Protected Access, which was released in 2018 by the Wi-Fi Alliance. WPA3 uses a new handshake protocol called Simultaneous Authentication of Equals (SAE), which is based on a zero-knowledge proof known as dragonfly. Dragonfly is a key exchange algorithm that uses discrete logarithm cryptography to derive a shared secret between two parties, without revealing any information about their passwords or keys. Dragonfly is resistant to offline dictionary attacks, where an attacker tries to guess the password by capturing the handshake and testing different combinations. Dragonfly is also resistant to key recovery attacks, where an attacker tries to recover the encryption key by exploiting weaknesses in the algorithm or implementation. Dragonfly provides forward secrecy, which means that even if an attacker manages to compromise the password or key in the future, they cannot decrypt the past communication. WPA3 also supports other features such as increased key sizes, opportunistic wireless encryption, and protected management frames, which enhance the security and privacy of wireless networks. Reference:
WPA3 Encryption and Configuration Guide
Dragon Fly - Zero Knowledge Proof
What is SAE (Simultaneous Authentication of Equals)?
Dragonfly - people.scs.carleton.ca
Below are the various steps involved in the creation of a data retention policy.
1.Understand and determine the applicable legal requirements of the organization
2.Ensure that all employees understand the organization's data retention policy
3.Build a data retention policy development team
4.ldentify and classify the data to be included in the data retention policy
5.Develop the data retention policy
Identify the correct sequence of steps involved.
The correct sequence of steps involved in the creation of a data retention policy is 3 -> 1 -> 4 -> 5 -> 2. This is based on the following description of the data retention policy creation process from the web search results:
How to Create a Data Retention Policy | Smartsheet, Smartsheet, July 17, 2019
What Is a Data Retention Policy? Best Practices + Template, Drata, November 29, 2023
Data Retention Policy: What It Is and How to Create One - SpinOne, SpinOne, 2020
How to Develop and Implement a Retention Policy - SecureScan, SecureScan, 2020
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 this process, 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.
WPA2 (Wi-Fi Protected Access 2) is an encryption technology that secures wireless networks using the IEEE 802.11i standard. WPA2 uses a four-way handshake to authenticate the client and the access point, and to generate a pairwise transient key (PTK) for encrypting the data. The PTK is derived from the password pairwise master key (PMK), which is a shared secret between the client and the access point. The PMK can be obtained either by using a pre-shared key (PSK) or by using an 802.1X authentication server. In the above scenario, George performed password cracking on WPA2, as he used sniffing tools to capture the PMK associated with the handshake authentication process. Then, using the PMK, he was able to derive the PTK and decrypt the data exchanged between the client and the access point. Reference:
How WPA2-PSK encryption works? - Cryptography Stack Exchange
WPA2 Encryption and Configuration Guide - Cisco Meraki Documentation
Barbara, a security professional, was monitoring the loT traffic through a security solution. She identified that one of the infected devices is trying to connect with other loT devices and spread malware onto the network. Identify the port number used by the malware to spread the infection to other loT devices.
Port 48101 is the port number used by the malware to spread the infection to other loT devices. This port is associated with the Mirai botnet, which is one of the most notorious loT malware that targets vulnerable loT devices and turns them into a network of bots that can launch distributed denial-of-service (DDoS) attacks. Mirai scans the internet for loT devices that use default or weak credentials and infects them by logging in via Telnet or SSH. Once infected, the device connects to a command and control (C&C) server on port 48101 and waits for instructions. The C&C server can then direct the botnet to attack a target by sending TCP, UDP, or HTTP requests. Mirai has been responsible for some of the largest DDoS attacks in history, such as the one that disrupted Dyn DNS in 2016 and affected major websites like Twitter, Netflix, and Reddit. Reference:
Mirai (malware), Wikipedia, March 16, 2021
Mirai Botnet: A History of the Largest loT Botnet Attacks, Imperva, December 10, 2020
Mirai Botnet: How loT Devices Almost Brought Down the Internet, Cloudflare, March 17, 2021
Cibel.org, an organization, wanted to develop a web application for marketing its products to the public. In this process, they consulted a cloud service provider and requested provision of development tools, configuration management, and deployment platforms for developing customized applications.
Identify the type of cloud service requested by Cibel.org in the above scenario.
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