- A
The spoke tunnel interfaces must be in the same IP subnet
Shortcut tunnels require the spoke tunnel interfaces to be in the same subnet (e.g., 10.0.0.0/24) to allow direct communication.
- B
The spokes must have static public IP addresses
Why wrong: Dynamic IPs are fine; auto-discovery handles dynamic addresses.
- C
The hub must be configured with 'set shortcuthub enable' to act as a shortcut hub
Why wrong: Shortcuthub is not required; the hub automatically facilitates shortcut negotiation.
- D
Auto-discovery must be enabled in the phase1 settings on all spokes
Without auto-discovery, the spoke will not initiate or respond to shortcut requests.
- E
The hub must have routes to all spoke local subnets
The hub needs routes to forward traffic to the correct spoke, which triggers shortcut negotiation.
NSE7 Advanced VPN and Zero Trust Practice Question
This NSE7 practice question tests your understanding of advanced vpn and zero trust. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 deploying a hub-and-spoke ADVPN with three spoke sites. The spokes have dynamic IP addresses. The hub has a static IP. The administrator wants the spokes to establish direct shortcut tunnels when they communicate with each other. Which THREE conditions must be met for shortcut tunnels to be established? (Choose three.)
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 spoke tunnel interfaces must be in the same IP subnet
For ADVPN shortcuts, auto-discovery must be enabled on phase1 (B), the hub must have routes to spoke subnets (D), and the spoke must have a tunnel interface with an IP in the same subnet as other spokes (E). The shortcuthub is not required if the hub is the central point.
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 spoke tunnel interfaces must be in the same IP subnet
Why this is correct
Shortcut tunnels require the spoke tunnel interfaces to be in the same subnet (e.g., 10.0.0.0/24) to allow direct communication.
Related concept
CIDR notation defines the prefix length.
- ✗
The spokes must have static public IP addresses
Why it's wrong here
Dynamic IPs are fine; auto-discovery handles dynamic addresses.
- ✗
The hub must be configured with 'set shortcuthub enable' to act as a shortcut hub
Why it's wrong here
Shortcuthub is not required; the hub automatically facilitates shortcut negotiation.
- ✓
Auto-discovery must be enabled in the phase1 settings on all spokes
Why this is correct
Without auto-discovery, the spoke will not initiate or respond to shortcut requests.
Related concept
CIDR notation defines the prefix length.
- ✓
The hub must have routes to all spoke local subnets
Why this is correct
The hub needs routes to forward traffic to the correct spoke, which triggers shortcut negotiation.
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 network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
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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Advanced VPN and Zero Trust — study guide chapter
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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 spoke tunnel interfaces must be in the same IP subnet — For ADVPN shortcuts, auto-discovery must be enabled on phase1 (B), the hub must have routes to spoke subnets (D), and the spoke must have a tunnel interface with an IP in the same subnet as other spokes (E). The shortcuthub is not required if the hub is the central point.
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.
About these practice questions
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Last reviewed: Jun 21, 2026
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.
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