Free Arista ACE-A1.2 Exam Actual Questions & Explanations

Last updated on: May 31, 2026
Author: Louann Susmilch (Senior Network Certification Specialist, Arista Learning & Development)

The Arista Certified Engineering Associate (ACE-A1.2) exam validates your foundational knowledge of Arista networking technologies and your ability to apply them in real-world environments. This exam is designed for network engineers and IT professionals who work with Arista solutions and want to demonstrate their competency. This landing page provides a clear roadmap of the exam syllabus, question formats, and practical preparation strategies to help you study efficiently and build confidence before test day.

ACE-A1.2 Exam Syllabus & Core Topics

Use this topic map to guide your study for Arista ACE-A1.2 (Arista Certified Engineering Associate) within the Arista Certified Engineering Associate path.

  • Network Fundamentals: Understand OSI layer concepts, IP addressing, subnetting, and basic network topology design. You must be able to analyze network requirements and identify appropriate architectural patterns for different deployment scenarios.
  • Arista EOS: Master the Arista Extensible Operating System, including system architecture, command-line interface navigation, and configuration management. Candidates should configure and verify basic EOS settings in production environments.
  • Switching Technologies: Learn VLAN configuration, spanning tree protocols, and port security mechanisms. You will need to design and troubleshoot switched networks, including identifying and resolving common switching issues.
  • Routing Protocols: Gain proficiency in static routing, dynamic protocols (OSPF, BGP), and route redistribution concepts. Demonstrate the ability to configure routing, verify neighbor relationships, and optimize routing policies for business requirements.
  • Network Security: Apply security best practices including access control lists, authentication mechanisms, and threat mitigation strategies. You should be able to implement security policies and audit network configurations for compliance.

Question Formats & What They Test

The ACE-A1.2 exam combines multiple question types to assess both theoretical knowledge and practical decision-making skills. Questions progress in difficulty and reflect real-world scenarios you will encounter in network operations.

  • Multiple choice: Test recall of core definitions, feature behavior, protocol mechanics, and key Arista terminology. These questions establish foundational understanding across all five topic domains.
  • Scenario-based items: Present realistic network problems and require you to analyze symptoms, evaluate options, and select the best solution. Examples include diagnosing routing failures, optimizing VLAN design, or responding to security incidents.
  • Configuration-focused questions: Assess your ability to translate business requirements into Arista EOS commands and verify correct implementation. You may be asked to identify configuration errors or propose changes to meet new constraints.

Questions are designed to reward practical reasoning and penalize guessing, so understanding the "why" behind each answer is essential.

Preparation Guidance

An effective study plan breaks the five topic domains into manageable weekly goals and combines passive review with active practice. Allocate more time to areas where you have less hands-on experience, and use practice questions to identify and close knowledge gaps.

  • Map Network Fundamentals, Arista EOS, Switching Technologies, Routing Protocols, and Network Security to weekly study blocks; track your progress with a simple checklist.
  • Work through practice question sets in untimed mode first to learn content, then switch to timed mode to build exam pacing and reduce test anxiety.
  • Review detailed explanations for every question, especially those you miss, to understand the reasoning and avoid similar mistakes.
  • Connect concepts across domains: for example, understand how routing protocols interact with network security policies or how switching design affects VLAN scalability.
  • Conduct a full-length timed mock exam one week before your test date to assess readiness and identify any remaining weak areas.

Explore other Arista certifications: view all Arista exams.

Get the PDF & Practice Test

Strengthen your preparation with up-to-date resources from validexamdumps.com. These materials align to ACE-A1.2 and cover practical scenarios with clear explanations.

  • Q&A PDF with explanations: topic-mapped questions that clarify why correct options are right and others aren't.
  • Practice Test: realistic items, timed/untimed modes, progress tracking, and detailed review.
  • Focused coverage: aligned to Network Fundamentals, Arista EOS, Switching Technologies, Routing Protocols, and Network Security so you study what matters most.
  • Regular reviews: content refreshes that reflect syllabus and product changes.

Visit the exam page to download the PDF, Online Practice Test, or get Bundle Discount offer for both formats: Arista Certified Engineering Associate.

Frequently Asked Questions

Which topics typically carry the most weight on the ACE-A1.2 exam?

Arista EOS and Routing Protocols tend to have the highest question density because they form the core of network operations. However, all five domains are represented, so neglecting any topic will create gaps. Focus on breadth first, then deepen your study in areas where you have the least hands-on experience.

How do the five exam domains connect in real project workflows?

Network Fundamentals provides the foundation for design decisions. Arista EOS is the tool you use to implement those designs. Switching Technologies and Routing Protocols define how traffic moves through the network. Network Security ensures policies are enforced at every layer. In practice, a single project touches all five: you design the network (Fundamentals), configure switches and routers (EOS, Switching, Routing), and apply security controls (Security).

How much hands-on lab experience should I have before taking the exam?

Ideally, you should have configured at least basic EOS commands, set up a VLAN, and verified a routing protocol in a lab environment. If you lack hands-on experience, prioritize labs on Arista EOS command syntax, OSPF neighbor establishment, and VLAN creation. Even a few hours in a simulator or virtual environment will significantly boost your confidence and retention.

What are the most common mistakes candidates make on ACE-A1.2?

Many candidates confuse similar protocol behaviors (e.g., OSPF vs. BGP use cases) or miss nuances in security policy application. Others rush through scenario questions without fully reading the constraints, leading to incorrect decisions. Avoid these by reading each question twice, annotating key details, and double-checking your logic before selecting an answer.

What should I focus on during my final week of preparation?

Review your weak topic areas and retake practice tests in timed mode to simulate exam conditions. Avoid learning new material; instead, reinforce concepts you already understand and practice pacing. Get adequate sleep the night before the exam, and on test day, read each question carefully, manage your time, and trust your preparation.

Question No. 1

The VXLAN spec allows for two implementation types. One uses multicast. What is the other one called?

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Correct Answer: B

Question No. 2

Which Arista switch series shares fans with the Arista 7300 chassis switches?

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Correct Answer: D

Question No. 3

If the SWI= statement in the boot-config file is invalid, what will happen when the switch reboots?

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Correct Answer: B

Question No. 4

Arista switches automatically issue a show tech support once every hour, saving the results to files on flash. How many of these files are retained by default?

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Correct Answer: C

Question No. 5

What can you assume about Ethernet1 in this output from a 7150-24 that have been configured with the tap aggregation mode exclusive command?

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Correct Answer: B