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Start ENARSI Practice Quiz →ENARSI VPN Technologies Question Bank (21 Questions)
Browse all 21 practice questions covering VPN Technologies for the ENARSI certification exam. Answers are intentionally hidden on this page so you can self-test first before checking results in quiz mode.
- Question 1VPN Technologies
What protocol does Cisco FlexVPN use for key exchange and tunnel establishment?
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Start ENARSI Quiz - Question 2VPN Technologies
What is the benefit of GRE over IPsec compared to plain IPsec tunnel mode?
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Start ENARSI Quiz - Question 3VPN Technologies
What advantage does a VTI (Virtual Tunnel Interface) IPsec VPN have over crypto map-based VPN?
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Start ENARSI Quiz - Question 4VPN Technologies
What does a crypto map define in an IPsec VPN configuration?
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Start ENARSI Quiz - Question 5VPN Technologies
What are the three key technologies that make up DMVPN (Dynamic Multipoint VPN)?
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Start ENARSI Quiz - Question 6VPN Technologies
What capability does DMVPN Phase 3 provide that Phase 2 does not?
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Start ENARSI Quiz - Question 7VPN Technologies
How many message exchanges does IKEv2 require to establish an IPsec SA compared to IKEv1?
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Start ENARSI Quiz - Question 8VPN Technologies
What happens when a DMVPN spoke wants to communicate directly with another spoke in Phase 2/3?
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Start ENARSI Quiz - Question 9VPN Technologies
Which protocol does DMVPN use to dynamically resolve tunnel endpoint addresses between spoke routers?
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Start ENARSI Quiz - Question 10VPN Technologies
What is the purpose of the tunnel protection command in a GRE over IPsec configuration?
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Start ENARSI Quiz - Question 11VPN Technologies
Which DMVPN phase allows spoke-to-spoke tunnels to be established directly without routing through the hub?
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Start ENARSI Quiz - Question 12VPN Technologies
What is the difference between GRE and IPsec tunnels?
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Start ENARSI Quiz - Question 13VPN Technologies
What is the difference between IPsec tunnel mode and transport mode?
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Start ENARSI Quiz - Question 14Infrastructure Services
What do GRE tunnel keepalives verify?
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Start ENARSI Quiz - Question 15VPN Technologies
What is FlexVPN?
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Start ENARSI Quiz - Question 16VPN Technologies
In MPLS VPN, which routing protocol is typically used between PE (Provider Edge) and CE (Customer Edge) routers?
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Start ENARSI Quiz - Question 17VPN Technologies
In an IPsec VPN, which protocol provides data confidentiality through encryption?
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Start ENARSI Quiz - Question 18VPN Technologies
Which IKE version is recommended for modern IPsec VPN deployments due to improved security and efficiency?
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Start ENARSI Quiz - Question 19VPN Technologies
What is DMVPN (Dynamic Multipoint VPN)?
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Start ENARSI Quiz - Question 20VPN Technologies
What is the role of NHRP in DMVPN?
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Start ENARSI Quiz - Question 21VPN Technologies
What is the difference between DMVPN Phase 1, 2, and 3?
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Key VPN Technologies Concepts for ENARSI
ENARSI VPN Technologies Exam Tips
VPN Technologies questions in ENARSI are typically scenario-based. Focus on service-level decision making aligned to official exam objectives. Priority concepts: mpls, dmvpn, flexvpn, gre, ipsec, vpn.
What ENARSI Expects
- Anchor your answer in select the most practical, secure, and scalable answer for the stated scenario.
- VPN Technologies scenarios for ENARSI are frequently mapped to Domain 2 (20%), so read the objective carefully before picking controls or architecture.
- Expect multi-topic scenarios where VPN Technologies interacts with routing, switching, security, or automation patterns rather than appearing as an isolated question.
- When two options are both technically valid, prefer the choice that best aligns with the exam's operational scope (Professional) and vendor best practices.
High-Value VPN Technologies Concepts
- Know the core VPN Technologies building blocks cold: mpls, dmvpn, flexvpn, gre.
- Review the edge-case features and limits for ipsec, vpn; these details are commonly used to differentiate answer choices.
- Practice service-integration reasoning: how VPN Technologies pairs with Layer 3 Technologies, Infrastructure Security in real deployment patterns.
- For ENARSI, explain why the chosen VPN Technologies design meets reliability, security, and cost expectations better than the alternatives.
Common ENARSI Traps
- Watch for answers that partially solve the requirement but miss operational constraints.
- Questions in VPN Technologies often include distractors that look correct for VPN Technologies but violate security policy, convergence, or redundancy requirements.
- Avoid picking options purely by feature name; validate data path, failure handling, and governance impact before answering.
- If the prompt hints at automation or repeatability, eliminate manual-only operational answers first.
Fast Review Checklist
- Can you compare at least two VPN Technologies implementation paths and justify which one best fits the scenario?
- Can you map the chosen answer back to VPN Technologies (20%) outcomes for ENARSI?
- Can you explain security and access boundaries for VPN Technologies without relying on default-open assumptions?
- Can you describe how VPN Technologies integrates with Layer 3 Technologies and Infrastructure Security during failure, scaling, and monitoring events?