Question 440 of 1,000
Advanced VPN and Zero TrusthardMultiple SelectObjective-mapped

NSE7 Advanced VPN and Zero Trust Practice Question

This NSE7 practice question tests your understanding of advanced vpn and zero trust. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

An administrator is configuring a hub-and-spoke ADVPN with IBGP as the overlay routing protocol. The hub is configured as a route reflector. Which two conditions must be met for a shortcut tunnel to be established between two spokes? (Choose TWO)

Question 1hardmulti select
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Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

The hub must have a route to the spoke's subnet via the IPsec tunnel

For shortcut tunnels to establish, the hub must send a shortcut offer to the spokes. This requires that the hub learns the route from one spoke via IBGP and reflects it to the other spoke. The spoke must also have auto-discovery-shortcut-mode enabled to accept the shortcut. Additionally, the spokes must be able to communicate directly (no NAT between them).

Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • The hub must have a route to the spoke's subnet via the IPsec tunnel

    Why this is correct

    The hub needs to have the route in its routing table to advertise to other spokes.

    Related concept

    CIDR notation defines the prefix length.

  • The spokes must use overlapping IPsec proposal sets

    Why it's wrong here

    Proposal sets must match but not necessarily overlapping; they can be identical.

  • The hub must have 'set auto-discovery-shortcut-mode both'

    Why it's wrong here

    This is not required; the hub needs 'set auto-discovery-sender enable'.

  • The spokes must be in the same VDOM

    Why it's wrong here

    VDOM membership does not affect shortcut establishment.

  • The spokes must have 'set auto-discovery-shortcut-mode client' enabled

    Why this is correct

    This setting allows the spoke to accept shortcut offers and establish direct tunnels.

    Related concept

    CIDR notation defines the prefix length.

Common exam traps

Common exam trap: usable hosts are not the same as total addresses

Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.

Detailed technical explanation

How to think about this question

Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.

KKey Concepts to Remember

  • CIDR notation defines the prefix length.
  • Block size helps identify subnet boundaries.
  • Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
  • The required host count determines the smallest suitable subnet.

TExam Day Tips

  • Write the block size before choosing the subnet.
  • Check whether the question asks for hosts, subnets or a specific address range.
  • Do not confuse /24, /25, /26 and /27 host counts.

Key takeaway

Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.

Real-world example

How this comes up in practice

A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.

What to study next

Got this wrong? Here's your next step.

Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related NSE7 subnetting questions on CIDR, address ranges, and subnet selection.

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FAQ

Questions learners often ask

What does this NSE7 question test?

Advanced VPN and Zero Trust — This question tests Advanced VPN and Zero Trust — CIDR notation defines the prefix length..

What is the correct answer to this question?

The correct answer is: The hub must have a route to the spoke's subnet via the IPsec tunnel — For shortcut tunnels to establish, the hub must send a shortcut offer to the spokes. This requires that the hub learns the route from one spoke via IBGP and reflects it to the other spoke. The spoke must also have auto-discovery-shortcut-mode enabled to accept the shortcut. Additionally, the spokes must be able to communicate directly (no NAT between them).

What should I do if I get this NSE7 question wrong?

Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related NSE7 subnetting questions on CIDR, address ranges, and subnet selection.

What is the key concept behind this question?

CIDR notation defines the prefix length.

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Last reviewed: Jun 21, 2026

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This NSE7 practice question is part of Courseiva's free Fortinet certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the NSE7 exam.