Top 20 Interview Questions & Answers for CCNA Basic Roles – 2025

Preparing for a CCNA basic job interview? This guide provides a list of essential questions and answers that will help you showcase your technical expertise, problem-solving abilities, and experience working with Cisco networking equipment. Whether you’re applying for a role as a network technician, network administrator, or network engineer, these questions cover all key areas of the job.

General Questions

• 1. What motivated you to become a CCNA certified professional?
  

  Answer: I have always been interested in computer networking and decided to take the CCNA certification as it is the most recognized and valuable certification in the industry. I wanted to expand my knowledge and skills in this field and enhance my career opportunities.

• 2. How do you stay updated with the latest trends and technologies in the IT industry?
  

  Answer: I regularly attend industry conferences and workshops, follow reliable IT blogs and forums, and participate in online training courses to stay updated with the latest trends and technologies. I also make sure to continuously enhance my skills through self-study and hands-on experience.

• 3. Can you provide an example of a time when you had to troubleshoot and solve a complex network issue?
  

  Answer: In my previous role, I encountered a network outage that affected multiple users. After thorough investigation and analysis, I discovered that the issue was caused by a faulty switch. I replaced the switch and reconfigured it, restoring the network and resolving the issue.

• 4. How do you handle a difficult network upgrade or migration?
  

  Answer: I understand that network upgrades and migrations can be challenging and require careful planning and execution. I make sure to gather all necessary information and communicate clearly with stakeholders to minimize disruptions. I also have backup plans in place and closely monitor the process to quickly address any issues that may arise.

• 5. Can you explain the difference between IPv4 and IPv6?
  

  Answer: IPv4 uses 32-bit addresses, limiting the number of unique addresses available. IPv6, on the other hand, uses 128-bit addresses, allowing for a much larger number of unique addresses. IPv6 also includes built-in features for security and efficiency that IPv4 lacks.

Technical Skills & Experience

• 6. Can you describe a time when you had to configure a router to provide redundancy and failover?
  

  Answer: In my previous role, we had a primary and backup router for our organization's internet connection. I configured the primary router to use an HSRP protocol for redundancy, and when it failed, the backup router would automatically take over, providing seamless internet connectivity for our users.

• 7. How do you prioritize and manage tasks and requests from multiple users?
  

  Answer: I use a ticketing system to track and prioritize tasks and requests in an organized manner. I also communicate clearly with users to manage their expectations and provide regular updates on the progress of their requests. I make sure to address critical issues promptly and plan and delegate tasks effectively to balance my workload.

• 8. How do you secure a network against potential cyber threats?
  

  Answer: I use a combination of technical and administrative controls, such as firewalls, intrusion detection systems, access controls, and employee awareness training to secure a network. I also regularly perform vulnerability assessments and stay updated with the latest security patches and updates.

• 9. How do you ensure high availability and performance for a network?
  

  Answer: I implement redundancy and load balancing techniques to ensure high availability for a network. I also regularly monitor and analyze network traffic to identify and address any potential bottlenecks or issues that may affect performance. Additionally, I keep the network infrastructure up-to-date and optimize configurations for maximum efficiency.

• 10. Can you explain the difference between a switch and a router?
  

  Answer: A switch is a network device that connects multiple devices within a network, allowing them to communicate with each other. A router, on the other hand, connects multiple networks and routes data between them. While a switch operates at the data link layer of the OSI model, a router operates at the network layer.

Behavioral Questions

• 11. How do you handle conflicting priorities and urgent tasks?
  

  Answer: I prioritize tasks based on their urgency and impact on the network. I also communicate with stakeholders to manage their expectations and make sure to address critical issues promptly. If there are conflicting priorities, I escalate the matter to my supervisor to determine the best course of action.

• 12. Can you describe a time when you had to work under pressure to meet a tight deadline?
  

  Answer: In my previous role, a major project was behind schedule, and we had to complete it within a week to meet the client's deadline. I worked closely with the team, put in extra hours, and effectively managed our time and resources to deliver the project on time.

• 13. How do you deal with feedback and criticism from colleagues or superiors?
  

  Answer: I understand that feedback and criticism are essential for personal and professional growth. I take them positively and use them as an opportunity to improve and learn from my mistakes. I also make sure to communicate my thoughts and concerns respectfully and openly.

• 14. How do you handle a team member who is not performing up to expectations?
  

  Answer: I believe in open and honest communication with my team members. I would first discuss the performance issues with the team member and offer support and resources to help improve their performance. If the issue persists, I would escalate the matter to my supervisor and work together to find a suitable solution.

• 15. Can you provide an example of a time when you had to adapt to a new or unfamiliar technology or process?
  

  Answer: I recently had to work with a new network monitoring tool that I was unfamiliar with. I quickly learned the basics through self-study and asked for guidance from my colleagues. Within a few days, I was able to confidently use the tool to monitor and troubleshoot network issues.

Situational Questions

• 16. How would you handle a network outage during off-hours?
  

  Answer: I have a backup plan in place in case of a network outage during off-hours. I have the necessary monitoring tools set up to alert me of any issues, and I can remotely access the network to troubleshoot and resolve the issue. If necessary, I can also contact my team for additional support.

• 17. How do you handle a user who repeatedly ignores security protocols?
  

  Answer: I would first educate and remind the user of the importance of following security protocols. If the issue persists, I would escalate it to my supervisor and involve the user's manager if necessary. I would also conduct regular security awareness training to reinforce the importance of following protocols.

• 18. How do you ensure the confidentiality and integrity of sensitive data?
  

  Answer: I follow data encryption and access control measures to protect sensitive data. I also regularly review and update security policies and procedures to make sure they address any potential vulnerabilities. Additionally, I conduct periodic audits to detect and address any security risks.

• 19. How do you handle a situation where a user's device is not connecting to the network?
  

  Answer: I would first determine if the issue is with the user's device or the network. If it is a network issue, I would troubleshoot and resolve it. If it is an issue with the device, I would provide instructions or assistance to the user to resolve the issue. In either case, I would make sure to communicate with the user and provide updates on the progress.

• 20. How would you handle a situation where a network device fails and there are no spare devices available?
  

  Answer: I would first try to determine the cause of the device failure and attempt to troubleshoot and fix the issue. If the issue cannot be resolved, I would escalate it to my supervisor to determine the next course of action. In the meantime, I would communicate with stakeholders and implement temporary solutions to minimize disruptions while a replacement device is obtained.