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Question 1
Which command would you use to check the OSPF router ID of a neighboring router?
Correct Answer:
show ip ospf neighbor
Explanation:
The command to check the OSPF router ID of a neighboring router is "show ip ospf neighbor." This command provides detailed information about OSPF neighbors and their current state. Among the output is the OSPF router ID of each neighbor, which is crucial for understanding the network topology and diagnosing OSPF-related issues. Using this command allows network engineers to verify neighbor relationships, Router IDs, and the status of OSPF adjacencies, which are essential for ensuring efficient routing and troubleshooting OSPF configurations. The information retrieved can help determine if there are any issues with OSPF neighbor formation, such as mismatched configurations or network connectivity problems. Other options would not provide the OSPF router ID. The command for interfaces focuses on interface configurations, the routing table command displays routes but not neighbor associations, and the version command provides information about the device's software and hardware but does not include OSPF specifics.
Question 2
Which of the following is considered best practice in the placement of ACLs?
Correct Answer:
Filter unwanted traffic before it travels onto a low-bandwidth link
Explanation:
Placing access control lists (ACLs) in a network is crucial for ensuring efficient traffic management and security. The practice of filtering unwanted traffic before it travels onto a low-bandwidth link is considered best practice because it conserves network resources and enhances overall efficiency. By placing ACLs in a position where they can intercept and filter traffic before it consumes valuable bandwidth on constrained links, network administrators can reduce the likelihood of congestion and ensure that the available bandwidth is used for legitimate traffic. This proactive filtering approach also minimizes unnecessary load on network devices, allowing them to function more effectively and improving overall network performance. In contrast to this, placing extended ACLs close to the destination may still be effective in some scenarios but does not offer the same efficiency in managing bandwidth. Similarly, while placing standard ACLs close to the source can be beneficial, it is typically less effective at optimizing bandwidth usage compared to filtering traffic before it reaches more restricted resources. Deploying ACLs in the center of the network is not advisable because it may introduce unnecessary delays and complexity in traffic management.
Question 3
If a router has two interfaces and is routing both IPv4 and IPv6 traffic, how many ACLs could be created and used?
Correct Answer:
8
Explanation:
When considering a router with two interfaces that is configured to route both IPv4 and IPv6 traffic, the design of access control lists (ACLs) allows for specific traffic management based on protocol types. Each interface on the router can have a set of ACLs applied to it for both IPv4 and IPv6 protocols. For each interface, you can apply one IPv4 ACL and one IPv6 ACL. Therefore, with two interfaces available on the router: - For Interface 1: - 1 IPv4 ACL - 1 IPv6 ACL - For Interface 2: - 1 IPv4 ACL - 1 IPv6 ACL This results in a total of four ACLs (2 interfaces x 2 ACLs per interface). However, it’s also crucial to remember that standard configurations often allow for predefined ACLs that can be created for specific needs or use-cases and network management strategies. While a commonly discussed configuration might yield four ACLs based on typical usage, additional considerations or variations in specific scenarios (like extended ACLs or requirements for different protocols) could lead to configurations that allow for additional ACLs beyond the straightforward application described earlier. The provided answer states eight ACLs. This is
Question 4
What is the purpose of placing standard ACLs close to the destination?
Correct Answer:
To optimize bandwidth usage
Explanation:
The most appropriate reason for placing standard ACLs close to the destination relates to optimizing bandwidth usage. When standard ACLs are applied nearer to the destination, they can effectively block unnecessary traffic from traversing the network to the endpoint. By filtering out unwanted packets based on their source addresses before they reach the destination, the load on the network is reduced. This proactive filtering helps to conserve bandwidth, as fewer unnecessary packets consume the available network resources. Choosing the correct placement for ACLs is crucial for network efficiency. If standard ACLs were placed far from the destination, potentially a significant volume of irrelevant traffic could consume bandwidth and processing power through various network segments before being filtered out, leading to congestion and decreased performance. Therefore, strategically positioning ACLs close to the destination enhances overall network performance and reliability by minimizing unnecessary traffic right at the source point of entry.
Question 5
Which technology does OSPF utilize to maintain routing information?
Correct Answer:
Link State
Explanation:
OSPF (Open Shortest Path First) is classified as a Link State routing protocol. It uses a method where each router in the network maintains a complete view of the network topology by exchanging link state advertisements (LSAs) with other routers. This approach allows OSPF to understand the entire network's state and make more informed routing decisions based on the current state of all links, rather than relying solely on distance or hop count. In a Link State protocol like OSPF, routers gather information about their own links and send that information to all other routers in the area, which allows each router to independently calculate the shortest path to each destination using an algorithm like Dijkstra's shortest path first (SPF). This results in more efficient and accurate routing compared to Distance Vector protocols, which rely on routers periodically sharing their routing tables with their immediate neighbors. By understanding the entire topology rather than just vector information about distance, OSPF can quickly adapt to changes in the network and optimize routing paths effectively. This ensures that routing information remains current and reliable, considering the dynamic nature of network connections.
Question 1
Exam overview

About this Exam

The CCNA 3 Enterprise Networking, Security, and Automation (ENSA) Version 7.0 Practice Exam is the definitive preparatory tool for students approaching the final hurdle of the three-course Cisco Networking Academy CCNA curriculum.

This exam is designed specifically for aspiring network professionals who have completed the "Introduction to Networks" and "Switching, Routing, and Wireless Essentials" modules and are now finalizing their associate-level expertise.

It simulates the rigor and scope of the final course exam, providing critical validation of your ability to design, secure, operate, and troubleshoot complex enterprise network architectures.

Successfully navigating this practice exam demonstrates readiness for advanced networking roles and provides the confidence needed to succeed in the formal course final and the subsequent composite CCNA (200-301) certification exam.

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Additional Information

What the Course Entails and Exam Details

The CCNA 3 ENSA v7.0 course shifts focus from basic connectivity to advanced enterprise-level technologies, emphasizing how modern networks scale, secure themselves, and incorporate intelligence through automation.

The practice exam rigorously tests knowledge across several key pillars of the ENSA syllabus:

  • Network Security: Deep comprehension of Access Control Lists (ACLs), including standard, extended, and IPv6 implementations, to mitigate security threats. It also covers Network Address Translation (NAT) and configuring secure remote access using Virtual Private Networks (VPNs) and IPsec.

  • Enterprise Routing and Scaling: Advanced configuration and troubleshooting of single-area OSPFv2 in both point-to-point and multi-access networks. Students are also tested on the concepts of wide area network (WAN) technologies and traditional versus modern WAN connectivity options.

  • Quality of Service (QoS): Understanding mechanisms necessary to prioritize time-sensitive traffic, such as voice and video, within a congested enterprise network.

  • Network Management and Optimization: Validating skills in monitoring networks using tools like SNMP, Syslog, and NetFlow, alongside understanding network design concepts like scalability and high availability.

  • Automation and Programmability: Introduction to the concepts of software-defined networking (SDN), APIs, REST, configuration management tools, and the impact of automation on modern network administration.


What to Expect in the Final Exam

While individual institutions may vary slightly, a standard NetAcad final course exam for CCNA 3 ENSA typically follows a strict format that the practice exam accurately mimics.

Exam Format: You should expect approximately 50 to 60 questions, which may include a mix of multiple-choice (single and multiple answer), matching, drag-and-drop, and interactive scenario-based questions.

Simulations: Critically, some questions may involve simulated environments using Cisco Packet Tracer, where you must configure or troubleshoot a network topology based on a given set of requirements.

Time Limit: The exam is typically timed, usually allowing between 75 to 90 minutes. This requires efficient time management and a quick recall of configuration commands and concepts.

Passing Score: The standard passing threshold within Cisco Networking Academy is typically 70% or higher. Achieving a high score on the practice exam is a strong indicator of success in the formal final, allowing you to earn your course completion badge and move toward full certification.


How to Study and Exam Centers

Preparation for the CCNA 3 ENSA exam requires a strategic mix of theoretical review and hands-on practical application.

  • Master the Curriculum: Re-read the official Cisco NetAcad online modules thoroughly. Focus on the summaries and take the module quizzes multiple times until you consistently score 100%.

  • Hands-on Lab Practice: This is non-negotiable. Spend significant time completing every Packet Tracer activity and physical lab assigned within the course. Focus especially on ACL configuration, NAT, OSPF troubleshooting, and VPN setup.

  • Use the Practice Exam Wisely: Treat the practice exam as a benchmark, not just a study guide. Take it under timed conditions without using notes. Analyze your weak areas from the results and return to the curriculum to review those specific topics.

  • Flashcards and Command Summaries: Create flashcards for key concepts (like QoS models) and compile a comprehensive list of configuration and verification commands for OSPF, NAT, and ACLs.

Exam Centers and Access: The CCNA 3 ENSA course exam is administered entirely online through the Cisco Networking Academy learning portal.

You will typically take this exam at the end of your course, either in a physical classroom at your authorized academy (such as a college, university, or technical school) or remotely, depending on your instructor’s guidance. It is not taken at Pearson VUE testing centers; those are only for the composite industrial CCNA certification exam.


Job Opportunities from the Course

Completing the CCNA 3 ENSA course equips you with the advanced skills demanded by modern enterprises, opening doors to various specialized and higher-level IT career paths.

This certification knowledge is a critical requirement for job titles such as:

  • Network Administrator

  • Network Engineer (Entry to Mid-Level)

  • System Administrator (with Networking Focus)

  • Network Support Specialist

  • IT Security Specialist (Junior)

  • Network Analyst

  • Data Center Technician

  • Infrastructure Engineer

  • Network Design Engineer (Junior)

  • Technical Support Engineer (L2)

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