Free 312-38 exam questions in PDF & AI Tutor

QUESTION: 21

Which of the following is a distributed multi-access network that helps in supporting integrated communications using a dual bus and distributed queuing?

Logical Link Control
Token Ring network
Distributed-queue dual-bus
CSMA/CA

Answer(s): C

Explanation:

In telecommunication, a distributed-queue dual-bus network (DQDB) is a distributed multi-access network that helps in supporting integrated communications using a dual bus and distributed queuing, providing access to local or metropolitan area networks, and supporting connectionless data transfer, connection-oriented data transfer, and isochronous communications, such as voice communications. IEEE 802.6 is an example of a network providing DQDB access methods. Answer option B is incorrect. A Token Ring network is a local area network (LAN) in which all computers are connected in a ring or star topology and a bit- or token-passing scheme is used in order to prevent the collision of data between two computers that want to send messages at the same time. The Token Ring protocol is the second most widely-used protocol on local area networks after Ethernet. The IBM Token Ring protocol led to a standard version, specified as IEEE 802.5. Both protocols are used and are very similar. The IEEE 802.5 Token Ring technology provides for data transfer rates of either 4 or 16 megabits per second.
Answer option A is incorrect. The IEEE 802.2 standard defines Logical Link Control (LLC). LLC is the upper portion of the data link layer for local area networks.
Answer option D is incorrect. Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) is an access method used by wireless networks (IEEE 802.11). In this method, a device or computer that transmits data needs to first listen to the channel for an amount of time to check for any activity on the channel. If the channel is sensed as idle, the device is allowed to transmit data. If the channel is busy, the device postpones its transmission. Once the channel is clear, the device sends a signal telling all other devices not to transmit data, and then sends its packets. In Ethernet (IEEE 802.3) networks that use CSMA/CD, the device or computer continues to wait for a time and checks if the channel is still free. If the channel is free, the device transmits packets and waits for an acknowledgment signal indicating that the packets were received.

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QUESTION: 22

Which of the following is a distributed application architecture that partitions tasks or workloads between service providers and service requesters? Each correct answer represents a complete solution. Choose all that apply.

Client-server computing
Peer-to-peer (P2P) computing
Client-server networking
Peer-to-peer networking

Answer(s): A,C

Explanation:

Client-server networking is also known as client-server computing. It is a distributed application architecture that partitions tasks or workloads between service providers (servers) and service requesters, called clients. Often clients and servers operate over a computer network on separate hardware. A server machine is a high- performance host that is running one or more server programs which share its resources with clients. A client does not share any of its resources, but requests a server's content or service function. Clients therefore initiate communication sessions with servers which await (listen to) incoming requests.
Answer options D and B are incorrect. Peer-to-peer (P2P) computing or networking is a distributed application architecture that partitions tasks or workloads between peers. Peers are equally privileged, equipotent participants in the application. They are said to form a peer-to-peer network of nodes. Peer-to-peer networking (also known simply as peer networking) differs from client-server networking, where certain devices have the responsibility to provide or "serve" data, and other devices consume or otherwise act as "clients" of those servers.

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QUESTION: 23

Which of the following is an attack on a website that changes the visual appearance of the site and seriously damages the trust and reputation of the website?

Website defacement
Zero-day attack
Spoofing
Buffer overflow

Answer(s): A

Explanation:

Website defacement is an attack on a website that changes the visual appearance of the site. These are typically the work of system crackers, who break into a Web server and replace the hosted website with one of their own. Sometimes, the Defacer makes fun of the system administrator for failing to maintain server security. Most times, the defacement is harmless; however, it can sometimes be used as a distraction to cover up more sinister actions such as uploading malware.
A high-profile website defacement was carried out on the website of the company SCO Group following its assertion that Linux contained stolen code. The title of the page was changed from Red Hat vs. SCO to SCO vs. World with various satirical content.
Answer option D is incorrect. Buffer overflow is a condition in which an application receives more data than it is configured to accept. This usually occurs due to programming errors in the application. Buffer overflow can terminate or crash the application.

Answer option B is incorrect. A zero-day attack, also known as zero-hour attack, is a computer threat that tries to exploit computer application vulnerabilities which are unknown to others, undisclosed to the software vendor, or for which no security fix is available. Zero-day exploits (actual code that can use a security hole to carry out an attack) are used or shared by attackers before the software vendor knows about the vulnerability. User awareness training is the most effective technique to mitigate such attacks.
Answer option C is incorrect. Spoofing is a technique that makes a transmission appear to have come from an authentic source by forging the IP address, email address, caller ID, etc. In IP spoofing, a hacker modifies packet headers by using someone else's IP address to hide his identity. However, spoofing cannot be used while surfing the Internet, chatting on-line, etc. because forging the source IP address causes the responses to be misdirected.

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QUESTION: 24

Which of the following cables is made of glass or plastic and transmits signals in the form of light?

Coaxial cable
Twisted pair cable
Plenum cable
Fiber optic cable

Answer(s): D

Explanation:

Fiber optic cable is also known as optical fiber. It is made of glass or plastic and transmits signals in the form of light. It is of cylindrical shape and consists of three concentric sections: the core, the cladding, and the jacket. Optical fiber carries much more information than conventional copper wire and is in general not subject to electromagnetic interference and the need to retransmit signals. Most telephone company's long-distance lines are now made of optical fiber. Transmission over an optical fiber cable requires repeaters at distance intervals. The glass fiber requires more protection within an outer cable than copper.
Answer option B is incorrect. Twisted pair cabling is a type of wiring in which two conductors (the forward and return conductors of a single circuit) are twisted together for the purposes of canceling out electromagnetic interference (EMI) from external sources. It consists of the following twisted pair cables:
Shielded Twisted Pair: Shielded Twisted Pair (STP) is a special kind of copper telephone wiring used in some business installations. An outer covering or shield is added to the ordinary twisted pair telephone wires; the shield functions as a ground. Twisted pair is the ordinary copper wire that connects home and many business computers to the telephone company. Shielded twisted pair is often used in business installations. Unshielded Twisted Pair: Unshielded Twisted Pair (UTP) is the ordinary wire used in home. UTP cable is also the most common cable used in computer networking. Ethernet, the most common data networking standard, utilizes UTP cables. Twisted pair cabling is often used in data networks for short and medium length connections because of its relatively lower costs compared to optical fiber and coaxial cable.UTP is also finding increasing use in video applications, primarily in security cameras. Many middle to high-end cameras include a UTP output with setscrew terminals. This is made possible by the fact that UTP cable bandwidth has improved to match the baseband of television signals.
Answer option A is incorrect. Coaxial cable is the kind of copper cable used by cable TV companies between the community antenna and user homes and businesses. Coaxial cable is sometimes used by telephone companies from their central office to the telephone poles near users. It is also widely installed for use in business and corporation Ethernet and other types of local area network. Coaxial cable is called "coaxial" because it includes one physical channel that carries the signal surrounded (after a layer of insulation) by another concentric physical channel, both running along the same axis. The outer channel serves as a ground. Many of these cables or pairs of coaxial tubes can be placed in a single outer sheathing and, with repeaters, can carry information for a great distance. It is shown in the figure below:
Answer option C is incorrect. Plenum cable is cable that is laid in the plenum spaces of buildings. The plenum is the space that can facilitate air circulation for heating and air conditioning systems, by providing pathways for either heated/conditioned or return airflows. Space between the structural ceiling and the dropped ceiling or under a raised floor is typically considered plenum. However, some drop ceiling designs create a tight seal that does not allow for airflow and therefore may not be considered a plenum air-handling space. The plenum space is typically used to house the communication cables for the building's computer and telephone network.

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QUESTION: 25

Which of the following is a network that supports mobile communications across an arbitrary number of wireless LANs and satellite coverage areas?

Answer(s): C

Explanation:

A global area network (GAN) is a network that is used for supporting mobile communications across an arbitrary number of wireless LANs, satellite coverage areas, etc. The key challenge in mobile communications is handing off the user communications from one local coverage area to the next.
Answer option B is incorrect. A wide area network (WAN) is a geographically dispersed telecommunications network. The term distinguishes a broader telecommunication structure from a local area network (LAN). A wide area network may be privately owned or rented, but the term usually connotes the inclusion of public (shared user) networks. An intermediate form of network in terms of geography is a metropolitan area network (MAN). A wide area network is also defined as a network of networks, as it interconnects LANs over a wide geographical area.
Answer option D is incorrect. A home area network (HAN) is a residential LAN that is used for communication between digital devices typically deployed in the home, usually a small number of personal computers and accessories, such as printers and mobile computing devices.
Answer option A is incorrect. The Local Area Network (LAN) is a group of computers connected within a restricted geographic area, such as residence, educational institute, research lab, and various other organizations. It allows the users to share files and services, and is commonly used for intra-office communication. The LAN has connections with other LANs via leased lines, leased services, or by tunneling across the Internet using the virtual private network technologies.

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EC-Council 312-38: Skills Tested, Job Roles, and Study Tips

The Certified Network Defender (CND) certification is designed for professionals who operate on the front lines of organizational security, specifically those tasked with protecting, detecting, and responding to network-based threats. Individuals who hold this credential typically work as network administrators, security analysts, or junior-level security engineers who are responsible for maintaining the integrity of an organization's internal and external infrastructure. Employers in both the public and private sectors value this certification because it validates a candidate's ability to implement defensive security measures that go beyond basic firewall configuration. By achieving this EC-Council certification, professionals demonstrate that they possess the foundational knowledge required to secure network environments against a wide array of modern cyber threats. This role is critical because it bridges the gap between general IT administration and specialized cybersecurity operations, ensuring that the network remains resilient under pressure.

Organizations rely on CND-certified personnel to maintain a robust defensive posture, which is why this certification is often a prerequisite for roles involving daily security monitoring and incident management. The certification focuses on the practical application of security controls, requiring candidates to understand how to harden systems and monitor traffic effectively. Professionals who pass the 312-38 exam are expected to contribute immediately to the security operations center (SOC) or the IT department by identifying vulnerabilities and implementing appropriate countermeasures. Because the threat landscape is constantly shifting, the skills validated by this exam are essential for anyone looking to build a long-term career in network defense. Ultimately, this certification serves as a benchmark for technical competency, proving that a candidate can handle the complexities of securing enterprise networks in a professional environment.

What the 312-38 Exam Covers

The 312-38 exam assesses a candidate's proficiency across several critical domains that form the backbone of network security, requiring a comprehensive understanding of how to protect an organization's digital assets. Candidates must demonstrate knowledge of network defense management, which involves establishing security policies and understanding the legal and ethical implications of network monitoring. The exam also tests the ability to implement network perimeter protection, ensuring that traffic entering and leaving the network is scrutinized through firewalls, intrusion detection systems, and other filtering mechanisms. Furthermore, the curriculum covers endpoint protection, which is vital for securing individual devices that connect to the network, as well as application and data protection to ensure that sensitive information remains confidential and intact. Our practice questions are designed to mirror these domains, allowing candidates to test their knowledge across the entire spectrum of defensive operations. By engaging with these practice questions, you will gain exposure to the specific scenarios and technical challenges that define the CND curriculum.

The most technically demanding aspect of the 312-38 exam often involves incident response and forensic investigation, as this requires candidates to synthesize knowledge from all other domains to address a security breach. This section is challenging because it moves beyond theoretical knowledge and requires the candidate to understand the precise steps needed to contain an incident, preserve evidence, and perform a root cause analysis. Candidates must be able to demonstrate how to follow a strict chain of custody and how to utilize forensic tools to reconstruct the timeline of an attack. This area of the exam tests the ability to think critically under pressure, as the decisions made during an incident response phase can have significant legal and operational consequences for an organization. Mastery of this domain requires not just memorization of tools, but a deep understanding of the methodology behind effective incident prediction and response.

Are These Real 312-38 Exam Questions?

The practice questions available on our platform are sourced and verified by the community, consisting of IT professionals and recent test-takers who have successfully sat for the actual EC-Council certification exam. These individuals contribute their insights to ensure that our database reflects the current difficulty level and subject matter distribution of the official test. Because our content is community-verified, it provides a reliable way to gauge your readiness for the real exam questions you will encounter on test day. If you have been searching for 312-38 exam dumps or braindump files, our community-verified practice questions offer something more valuable, each question is verified and explained by IT professionals who recently passed the exam. We prioritize accuracy and educational value over the mere reproduction of content, ensuring that you are learning the concepts rather than just memorizing patterns.

Community verification works through a collaborative process where users actively discuss the logic behind each answer choice, flag potentially ambiguous questions, and share context from their own recent exam experiences. This peer-review mechanism is what makes our practice questions a reliable resource for your exam preparation, as it filters out inaccuracies and provides multiple perspectives on complex technical topics. When a question is flagged or debated, the community works to clarify the correct answer based on official EC-Council documentation and real-world application. This ongoing dialogue ensures that the information remains relevant and accurate, even as the exam content evolves over time. By participating in these discussions, you are not just taking a test; you are engaging with a network of peers who are all working toward the same certification goal.

How to Prepare for the 312-38 Exam

Effective exam preparation for the 312-38 requires a balanced approach that combines theoretical study with hands-on practice in a real or sandbox environment. You should prioritize understanding the underlying concepts of network defense rather than relying on rote memorization, as the EC-Council certification exam is heavily scenario-based. We recommend building a consistent study schedule that allows you to dedicate time to each of the major domains, ensuring that you are comfortable with both the tools and the methodologies involved. Every practice question includes a free AI Tutor explanation that breaks down the reasoning behind the correct answer, so you understand the concept, not just the answer. This AI Tutor is designed to act as a study companion, helping you identify gaps in your knowledge and providing detailed explanations for why certain distractors are incorrect.

A common mistake candidates make when preparing for this certification exam is underestimating the complexity of the scenario-based questions, which often require you to apply knowledge to specific, real-world network configurations. To avoid this, you should practice analyzing network diagrams and security logs to determine the most appropriate defensive action, rather than simply memorizing definitions. Time management is another critical factor, as the exam requires you to process information quickly and make accurate decisions under time constraints. By using our practice questions to simulate the exam environment, you can train yourself to identify key information in a prompt and eliminate incorrect options efficiently. Focus on understanding the "why" behind every security control, as this will help you navigate even the most complex questions on the actual exam.

What to Expect on Exam Day

On the day of your 312-38 exam, you should be prepared for a rigorous assessment that typically consists of multiple-choice questions designed to test both your theoretical knowledge and your practical application of network defense principles. The exam is administered through authorized testing centers or via remote proctoring services, such as those provided by Pearson VUE, which maintain strict security protocols to ensure the integrity of the certification process. You will likely encounter scenario-based questions that require you to analyze a network topology or a security incident log and select the best course of action from a list of options. It is important to read each question carefully, as small details in the scenario can significantly change the correct answer. EC-Council certification exams are known for their focus on real-world applicability, so expect to be challenged on your ability to make sound security decisions in a professional context.

The testing environment will be controlled, and you will be expected to adhere to all rules regarding personal items and conduct during the exam session. Because the exam is timed, it is essential to manage your pace throughout the session, ensuring that you have enough time to review your answers before submitting the final exam. If you encounter a particularly difficult question, it is often better to flag it for review and move on to the next one, rather than spending too much time on a single item. Remember that the goal of the exam is to validate your competency as a defender, so approach each question with the mindset of a security professional tasked with protecting an organization's infrastructure. By the time you reach the end of the exam, you should have demonstrated a comprehensive understanding of the defensive strategies and tools required for the CND certification.

Who Should Use These 312-38 Practice Questions

These practice questions are intended for IT professionals, network administrators, and security analysts who are actively pursuing the Certified Network Defender credential to advance their careers. Typically, candidates for this certification have at least a foundational understanding of networking and security concepts, and they are looking to formalize their expertise through an industry-recognized EC-Council certification. Whether you are a student looking to enter the cybersecurity field or an experienced IT professional aiming to pivot into a defensive security role, this exam preparation resource will help you identify your strengths and weaknesses. Passing this certification exam can have a significant impact on your professional trajectory, opening doors to roles that require specialized knowledge in network defense and incident management. By using these materials, you are taking a proactive step toward validating your skills and demonstrating your commitment to the field of cybersecurity.

To get the most out of these practice questions, you should treat each session as a learning opportunity rather than just a way to test your memory. Do not simply read the answer; engage with the AI Tutor explanation to understand the underlying logic, and read the community discussions to see how other professionals approach the same problem. If you get a question wrong, flag it and revisit it after you have reviewed the relevant study material, ensuring that you have fully grasped the concept before moving on. This iterative process of testing, reviewing, and learning is the most effective way to build the confidence needed for the actual exam. Browse the questions above and use the community discussions and AI Tutor to build real exam confidence.

EC-Council 312-38 Exam Actual Questions Certified Network Defender (Page 6 )

QUESTION: 21

Explanation:

QUESTION: 22

Explanation:

QUESTION: 23

Explanation:

QUESTION: 24

Explanation:

QUESTION: 25

Explanation:

EC-Council 312-38: Skills Tested, Job Roles, and Study Tips

What the 312-38 Exam Covers

Are These Real 312-38 Exam Questions?

How to Prepare for the 312-38 Exam

What to Expect on Exam Day

Who Should Use These 312-38 Practice Questions

EC-Council 312-38 Exam Actual Questions
Certified Network Defender (Page 6 )