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Free Fortinet NSE4_FGT_AD-7.6 Practice Questions

20 free Fortinet NSE4_FGT_AD-7.6 practice questions from the CertStash pack of 94, each with the correct answer and a full explanation. The rule is the same for every exam: ten free on the product page, 20 free here, all 94 in the pack, and each step includes the one before it.

Question 1

Which three statements about SD-WAN performance SLAs are true? (Choose three.)

  1. They can be measured actively or passively.
  2. They are applied in a SD-WAN rule lowest cost strategy.
  3. They monitor the state of the FortiGate device.
  4. All the SLA targets can be configured.
  5. They rely on session loss and jitter.
Show answer and explanation

Correct answer: A, B, D. They can be measured actively or passively; They are applied in a SD-WAN rule lowest cost strategy; All the SLA targets can be configured.

SD-WAN performance SLAs can be measured both actively (FortiGate sends probes like ping, HTTP, DNS, or TCP to SLA targets) and passively (FortiGate measures real user traffic). They are applied in SD-WAN rules including the lowest cost strategy, where SLAs determine which links are eligible before cost is considered. All SLA target thresholds can be configured, including latency, jitter, and packet loss. Option C is incorrect because SLAs monitor link performance, not the state of the FortiGate device itself. Option E is incorrect because SLAs measure latency, jitter, and packet loss, not session loss and jitter.

Why the other options are wrong

  • C. SLAs monitor the performance of network links and connections, not the operational state of the FortiGate device.
  • E. SLAs measure latency, jitter, and packet loss; session loss is not a standard SLA metric.

Question 2

FortiGate is operating in NAT mode and has two physical interfaces connected to the LAN and DMZ networks respectively.

Which two statements about the requirements of connected physical interfaces on FortiGate are true? (Choose two.)

  1. Both interfaces must have directly connected routes on the routing table.
  2. Both interfaces must have IP addresses assigned.
  3. Both interfaces must have DHCP enabled and interfaces set to LAN and DMZ roles assigned.
  4. Both interfaces must have the interface role assigned.
Show answer and explanation

Correct answer: A, B. Both interfaces must have directly connected routes on the routing table; Both interfaces must have IP addresses assigned.

For physical interfaces connected to networks in NAT mode, both interfaces must have IP addresses assigned to enable communication and routing. Both interfaces must have directly connected routes in the routing table so FortiGate can forward traffic between the networks. DHCP enablement is not mandatory, static IP addresses are acceptable. Interface roles (LAN/DMZ designation) are optional for basic NAT functionality, though they may be used for organization or advanced features. The core requirement is IP address assignment and connected routes for the interfaces to function.

Why the other options are wrong

  • C. DHCP is not required; interfaces can use static IP addresses. Interface roles are optional for NAT mode operation.
  • D. Interface roles are not mandatory for interfaces to function in NAT mode, though they may be assigned for management purposes.

Question 3

A network administrator has enabled full SSL inspection and web filtering on FortiGate.

When visiting any HTTPS websites, the browser reports certificate warning errors.

When visiting HTTP websites, the browser does not report errors.

What is the reason for the certificate warning errors?

  1. The matching firewall policy is set to proxy inspection mode.
  2. The option invalid SSL certificates is set to allow on the SSL/SSH inspection profile.
  3. The certificate used by FortiGate for SSL inspection does not contain the required certificate extensions.
  4. The browser does not trust the certificate used by FortiGate for SSL inspection.
Show answer and explanation

Correct answer: D. The browser does not trust the certificate used by FortiGate for SSL inspection.

When FortiGate performs SSL inspection, it replaces the original server certificate with its own self-signed certificate to decrypt and inspect HTTPS traffic. The browser reports certificate warning errors because it does not trust the self-signed certificate that FortiGate presents, the certificate is not issued by a trusted Certificate Authority. This is the expected behavior of SSL inspection. The certificate warnings do not occur for HTTP because HTTP traffic is not encrypted and does not involve certificate validation.

Why the other options are wrong

  • A. Proxy inspection mode is the correct mode for SSL inspection and would not cause unexpected certificate errors.
  • B. The setting to allow invalid SSL certificates would reduce errors, not cause them.
  • C. Certificate extensions are not the cause of browser trust warnings when the certificate issuer itself is untrusted.

Question 4

A network administrator is reviewing firewall policies in both Interface Pair View and By Sequence View. The policies appear in a different order in each view.

Why is the policy order different in these two views?

  1. Interface Pair View sorts policies based on matching interfaces, while By Sequence View shows the actual processing order of rules.
  2. By Sequence View groups policies based on rule priority, while Interface Pair View always follows the order of traffic logs.
  3. The firewall dynamically reorders policies in Interface Pair View based on recent traffic patterns, but By Sequence View remains static.
  4. Policies in Interface Pair View are prioritized by security levels, while By Sequence View strictly follows the administrator’s manual ordering.
Show answer and explanation

Correct answer: A. Interface Pair View sorts policies based on matching interfaces, while By Sequence View shows the actual processing order of rules.

The Interface Pair View organizes and displays policies based on the matching interfaces involved (grouping policies by source/destination interface pairs), while the By Sequence View shows the actual processing order in which FortiGate evaluates the rules during traffic handling. This accounts for the different ordering observed between the two views. The By Sequence View reflects the true rule evaluation sequence that impacts traffic flow and policy matching.

Why the other options are wrong

  • B. By Sequence View does not group by priority; it shows actual processing order. Interface Pair View does not follow traffic logs.
  • C. FortiGate does not dynamically reorder policies in Interface Pair View based on traffic patterns; both views are static.
  • D. Policies are not sorted by security levels in Interface Pair View; the difference is in how the two views organize and display the same policy set.

Question 5

You have created a web filter profile named restrict_media-profile with a daily category usage quota.

When you are adding the profile to the firewall policy, the restrict_media-profile is not listed in the available web profile drop down.

What could be the reason?

  1. The inspection mode in the firewall policy is not matching with web filter profile feature set.
  2. The web filter profile is already referenced in another firewall policy.
  3. The naming convention used in the web filter profile is restricting it in the firewall policy.
  4. The firewall policy is in no-inspection mode instead of deep-inspection.
Show answer and explanation

Correct answer: A. The inspection mode in the firewall policy is not matching with web filter profile feature set.

Web filter profiles with certain features, such as category usage quotas, require proxy-based inspection to function. If the firewall policy is configured for flow-based inspection rather than proxy-based inspection, the profile with quota features will not appear in the available dropdown list because the policy's inspection mode is incompatible with the profile's feature set. The profile cannot be applied to a policy that uses an incompatible inspection method.

Why the other options are wrong

  • B. A web filter profile can be referenced in multiple policies; this is not a restriction on availability.
  • C. Naming conventions do not prevent a profile from appearing in the dropdown.
  • D. The restriction applies to flow-based versus proxy-based inspection modes, not specifically no-inspection versus deep-inspection.

Question 6

An administrator wants to configure dead peer detection (DPD) on IPsec VPN for detecting dead tunnels. The requirement is that FortiGate sends DPD probes only when there is no inbound traffic.

Which DPD mode on FortiGate meets this requirement?

  1. On Demand
  2. Enabled
  3. On Idle
  4. Disabled
Show answer and explanation

Correct answer: A. On Demand

The On Demand DPD mode sends DPD probes specifically when there is only outbound traffic through the tunnel but no inbound traffic, which aligns with the requirement to send probes only when there is no inbound traffic. This mode balances connectivity assurance with resource efficiency by probing only when the tunnel appears to have unidirectional traffic flow. On Demand is the default setting for DPD on FortiGate IPsec tunnels.

Why the other options are wrong

  • B. Enabled mode sends DPD probes continuously at regular intervals regardless of traffic state.
  • C. On Idle mode sends probes when no traffic is observed in either direction, which is broader than the requirement for no inbound traffic only.
  • D. Disabled mode means FortiGate never initiates DPD probes.

Question 7

What are two features of FortiGate FSSO agentless polling mode? (Choose two.)

  1. FortiGate does not support workstation check.
  2. FortiGate directs the collector agent to use a remote LDAP server.
  3. FortiGate uses the AD server as the collector agent.
  4. FortiGate uses the SMB protocol to read the event viewer logs from the DCs.
Show answer and explanation

Correct answer: A, D. FortiGate does not support workstation check; FortiGate uses the SMB protocol to read the event viewer logs from the DCs.

In agentless polling mode, FortiGate does not support workstation checks because it retrieves only user logon events from Domain Controllers without collecting workstation information. FortiGate uses the SMB protocol to directly read the Security Event Viewer logs from the Domain Controllers, eliminating the need for an external collector agent. These are defining characteristics of agentless polling, FortiGate acts as the collector itself, polling event logs directly while lacking workstation verification capabilities.

Why the other options are wrong

  • B. FortiGate does not direct a collector agent to use a remote LDAP server; in agentless mode, there is no collector agent at all.
  • C. While FortiGate polls the AD server directly, it does not use AD server as a collector agent; there is no collector agent component in agentless polling mode.

Question 8

FortiGate is integrated with FortiAnalyzer and FortiManager.

When creating a firewall policy, which attribute must an administrator include to enhance functionality and enable log recording on FortiAnalyzer and FortiManager?

  1. Universally Unique Identifier
  2. Log ID
  3. Sequence ID
  4. Policy ID
Show answer and explanation

Correct answer: A. Universally Unique Identifier

The Universally Unique Identifier (UUID) is the attribute that must be included in a firewall policy to enhance functionality and enable log recording on both FortiAnalyzer and FortiManager. The UUID serves as a persistent, globally unique identifier for the policy that remains consistent across FortiGate, FortiAnalyzer, and FortiManager integrations, allowing proper correlation and tracking of logs and policy-related events across the integrated management platform.

Why the other options are wrong

  • B. Log ID is not a standard policy attribute required for FortiAnalyzer and FortiManager integration.
  • C. Sequence ID refers to the policy order, not a unique identifier for integration purposes.
  • D. Policy ID is not the required attribute; UUID provides the universal unique identification needed for integration.

Question 9

You have configured an application control profile, set peer-to-peer traffic to Block under the Categories tab, and applied it to the firewall policy. However, you peer-to-peer traffic on known ports is passing through the FortiGate without being blocked. What FortiGate settings should you check to resolve this issue?

  1. Replacement Messages for UDP-based Applications
  2. Network Protocol Enforcement
  3. Application and Filter Overrides
  4. FortiGuard category ratings
Show answer and explanation

Correct answer: C. Application and Filter Overrides

When peer-to-peer traffic on known ports passes through despite being blocked in the application control profile, the issue is typically that Application and Filter Overrides are configured to permit the traffic. These overrides take precedence over application control profiles and must be checked and adjusted to ensure the block policy is enforced.

Why the other options are wrong

  • A. Replacement Messages affect how blocked traffic is reported to users, not whether traffic is blocked.
  • B. Network Protocol Enforcement relates to protocol compliance, not application-level blocking of specific categories.
  • D. FortiGuard category ratings determine how applications are classified, but if the profile is correctly configured, the issue lies in overrides, not ratings.

Question 10

An administrator manages a FortiGate model that supports NTurbo.

How does NTurbo acceleration enhance antivirus performance?

  1. For flow-based inspection, NTurbo creates two inspection sessions on the FortiGate device.
  2. For proxy-based inspection, NTurbo buffers the whole file and then sends it to the antivirus engine.
  3. For flow-based inspection, NTurbo establishes a dedicated data path to redirect traffic between the IPS engine and FortiGate ingress and egress interfaces.
  4. For proxy-based inspection, NTurbo offloads traffic to the content processor.
Show answer and explanation

Correct answer: C. For flow-based inspection, NTurbo establishes a dedicated data path to redirect traffic between the IPS engine and FortiGate ingress and egress interfaces.

NTurbo acceleration for flow-based inspection creates a dedicated data path that bypasses the normal inspection pipeline, allowing traffic to be redirected directly between the IPS engine and the FortiGate ingress and egress interfaces. This dedicated path reduces latency and improves throughput for antivirus and IPS operations without buffering entire files or requiring multiple inspection sessions.

Why the other options are wrong

  • A. NTurbo does not create two inspection sessions for flow-based inspection; it establishes a single optimized data path.
  • B. Buffering whole files is characteristic of proxy-based inspection, not the NTurbo acceleration method, which is designed to avoid such overhead.
  • D. For proxy-based inspection, NTurbo does not offload to a content processor; proxy-based inspection maintains its buffering and processing model.

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Question 11

How does FortiExtender connect to FortiSASE in a site-based, remote internet access method?

  1. FortiExtender establishes a secure SSL connection using FortiClient.
  2. FortiExtender uses the proxy auto-configuration (PAC) file and an explicit web proxy to connect.
  3. FortiExtender first connects to a FortiGate LAN extension through a secure web gateway (SWG).
  4. FortiExtender uses a Virtual Extensible LAN (VXLAN)-over-IPsec connection.
Show answer and explanation

Correct answer: D. FortiExtender uses a Virtual Extensible LAN (VXLAN)-over-IPsec connection.

FortiExtender connects to FortiSASE in a site-based remote internet access method using a Virtual Extensible LAN (VXLAN) tunnel encapsulated over IPsec. This secure tunnel provides a dedicated connection for site-based access without requiring PAC files or individual client agents.

Why the other options are wrong

  • A. SSL connections with FortiClient are used for agent-based mode, not site-based remote access.
  • B. PAC files and explicit web proxies are used in agent-based mode, not in site-based FortiExtender connections.
  • C. FortiExtender does not connect through a FortiGate LAN extension or secure web gateway in site-based mode; it uses direct VXLAN-over-IPsec tunneling.

Question 12

An administrator wants to form an HA cluster using the FGCP protocol.

Which two requirements must the administrator ensure both members fulfill? (Choose two.)

  1. They must have the same HA group ID.
  2. They must have the heartbeat interfaces in the same subnet.
  3. They must have the same hard drive configuration.
  4. They must have the same number of configured VDOMs.
Show answer and explanation

Correct answer: A, C. They must have the same HA group ID; They must have the same hard drive configuration.

The question asks what the administrator must make identical on both units before FGCP will build a cluster. FortiOS requires the members to share the same HA group ID, along with the same password and operating mode, because units with different group IDs simply never negotiate and stay standalone. It also requires the same hardware configuration, which explicitly includes the same hard drive configuration, since a unit with disk logging cannot pair with one without a disk. The heartbeat links do not need a manually configured subnet at all, as FGCP places them on automatic 169.254.0.x addresses, and VDOM configuration is pushed from the primary during synchronization rather than pre-matched.

Why the other options are wrong

  • B. Heartbeat interfaces are not given administrator configured IP subnets; FGCP automatically assigns 169.254.0.x addresses and only needs Layer 2 reachability between the members.
  • D. VDOM configuration, including how many VDOMs exist, is synchronized from the primary to the secondary after the cluster forms, so it is not a precondition for joining.

Question 13

What are two features of collector agent advanced mode? (Choose two.)

  1. Advanced mode supports nested or inherited groups.
  2. Advanced mode uses the Windows convention-NetBios: Domain\Username.
  3. In advanced mode, FortiGate can be configured as an LDAP client and group filters can be configured on FortiGate.
  4. In advanced mode, security profiles can be applied only to user groups, not individual users.
Show answer and explanation

Correct answer: A, C. Advanced mode supports nested or inherited groups; In advanced mode, FortiGate can be configured as an LDAP client and group filters can be configured on FortiGate.

In collector agent advanced mode, FortiGate supports nested or inherited groups, allowing for more complex organizational structures and group hierarchies. Additionally, advanced mode enables FortiGate to be configured as an LDAP client with group filter capabilities, allowing direct querying of directory services and granular access control based on group membership.

Why the other options are wrong

  • B. Windows NetBIOS convention (Domain\Username) is used in basic mode, not advanced mode.
  • D. In advanced mode, security profiles can be applied to both user groups and individual users, not restricted to groups only.

Question 14

Which two components are part of the secure internet access (SIA) agent-based mode on FortiSASE? (Choose two.)

  1. FortiExtender
  2. VPN policies
  3. The proxy auto-configuration (PAC) file
  4. FortiSASE Firewall-as-a-Service (FWaaS)
Show answer and explanation

Correct answer: B, D. VPN policies; FortiSASE Firewall-as-a-Service (FWaaS)

In FortiSASE, agent-based secure internet access means FortiClient endpoints build an SSL or IPsec tunnel to the nearest security point of presence, so traffic is controlled by the VPN policies defined for that tunnel and then inspected by the FortiSASE Firewall-as-a-Service engine, which applies the security profiles. That combination of VPN tunnel policies plus FWaaS is what defines the agent-based path, which is why B and D are the two components asked for here.

Why the other options are wrong

  • A. FortiExtender is used for thin edge or LAN extension connectivity to FortiSASE, not part of the endpoint agent-based internet access path.
  • C. The PAC file is how agentless clients and browsers are pointed at the FortiSASE secure web gateway, so it belongs to agentless mode rather than agent-based mode.

Question 15

An administrator has configured a dialup IPsec VPN on FortiGate with add-route enabled. However, the static route is not showing in the routing table.

Which two statements about this scenario are correct? (Choose two.)

  1. The administrator must ensure phase 2 is successfully established.
  2. The administrator must enable a dynamic routing protocol on the dialup interface.
  3. The administrator must define the remote network correctly in the phase 2 selectors.
  4. The administrator must use a policy route instead of a static route for add-route to work properly.
Show answer and explanation

Correct answer: A, C. The administrator must ensure phase 2 is successfully established; The administrator must define the remote network correctly in the phase 2 selectors.

For add-route to populate static routes into the routing table on a dialup IPsec VPN, two conditions must be met. First, phase 2 must be successfully established because the route is derived from the phase 2 selectors that define the protected traffic. Second, the remote network must be correctly defined in the phase 2 selectors, as these define exactly which traffic flows are protected and thus which routes should be added to the table. Without both conditions, the route will not appear.

Why the other options are wrong

  • B. Dynamic routing protocols are not required for add-route functionality; static routes are added automatically based on phase 2 configuration.
  • D. Policy routes serve a different purpose (traffic matching and action); add-route works with static routes derived from phase 2 selectors and does not require policy routes.

Question 16

Which statement correctly describes NetAPI polling mode for the FSSO collector agent?

  1. The collector agent must search Windows application event logs.
  2. The NetSessionEnum function is used to track user logouts.
  3. NetAPI polling can increase bandwidth usage in large networks.
  4. The collector agent uses a Windows API to query DCs for user logins.
Show answer and explanation

Correct answer: D. The collector agent uses a Windows API to query DCs for user logins.

NetAPI polling mode for the FSSO collector agent uses Windows APIs to query domain controllers for user login information. This polling method leverages the NetSessionEnum and related Windows API functions to retrieve session and user information directly from domain controllers, enabling the FSSO collector to track active user sessions and map them to network traffic.

Why the other options are wrong

  • A. NetAPI polling does not search Windows application event logs; it queries domain controller APIs for current session data.
  • B. NetSessionEnum tracks active sessions and logins, not logouts specifically; logout tracking is handled through session timeout and session termination detection.
  • C. While NetAPI polling does consume network bandwidth, this is a side effect rather than the primary mechanism of how it works or its intended purpose.

Question 17

Which two statements are correct when the FortiGate device enters conserve mode? (Choose two.)

  1. FortiGate refuses to accept configuration changes.
  2. FortiGate continues to run critical security actions, such as quarantine.
  3. FortiGate halts complete system operation and requires a reboot to regain available resources.
  4. FortiGate continues to transmit packets without IPS inspection when the fail -open global setting in IPS is enabled.
Show answer and explanation

Correct answer: A, D. FortiGate refuses to accept configuration changes; FortiGate continues to transmit packets without IPS inspection when the fail -open global setting in IPS is enabled.

The exhibit gives no device output, so the answer rests purely on documented FortiOS conserve mode behaviour. When the memory threshold is crossed, FortiOS protects the remaining memory by refusing configuration changes, since writing and rebuilding the configuration itself consumes memory, which makes A correct. It also honours the IPS global fail-open setting: with fail-open enabled the IPS engine lets packets through uninspected rather than dropping them, which makes D correct. Quarantine actions are not maintained in conserve mode, and the device keeps forwarding traffic rather than shutting down, so the suggested BD pairing is wrong. The community comment selecting AD reflects the documented behaviour.

Why the other options are wrong

  • B. Conserve mode drops non-essential inspection work, and quarantine actions are not carried out while the unit is conserving memory.
  • C. The FortiGate keeps forwarding traffic and running in a degraded state; it does not halt operation or require a reboot, and it exits conserve mode automatically once memory use falls below the green threshold.

Question 18

When configuring firewall policies which of the following is true regarding the policy ID? (Choose two.)

  1. A policy ID cannot be modified once a policy is created.
  2. A firewall policy ID identifies the order of policy execution in firewall policies.
  3. It is mandatory to provide a policy ID while creating a firewall policy regardless of GUI or CLI.
  4. You can create a policy in CLI with policy ID 0.
Show answer and explanation

Correct answer: A, D. A policy ID cannot be modified once a policy is created; You can create a policy in CLI with policy ID 0.

Once a firewall policy is written, its ID is permanent; you can move, clone or delete the policy but you cannot edit the ID field, so A is true. In the CLI, entering config firewall policy followed by edit 0 is accepted, and FortiGate assigns the next available policy ID automatically, so D is true. Policy matching is top down by the order shown in the policy list, which is controlled by the sequence or move command, not by the numeric value of the ID.

Why the other options are wrong

  • B. Policies are matched top down according to their position in the list, which is changed with move or sequence numbers, so a lower ID does not mean earlier evaluation.
  • C. The GUI assigns the ID automatically and the CLI accepts edit 0 to auto-generate one, so supplying an ID is never mandatory.

Question 19

A new administrator is configuring FSSO authentication on FortiGate using DC Agent Mode.

Which step is not part of the expected process?

  1. The user logs into the Windows domain.
  2. FortiGate determines user identity based on the IP address in the FSSO list.
  3. The DC agent sends login event data directly to FortiGate.
  4. The collector agent forwards login event data to FortiGate.
Show answer and explanation

Correct answer: C. The DC agent sends login event data directly to FortiGate.

DC agent mode always uses a collector agent as the middleman. The DC agent is a dcagent DLL on each domain controller that captures logon events and passes them to the collector agent, which consolidates them, resolves workstation names and group memberships, and then pushes the user, IP and group information to FortiGate over TCP 8000. FortiGate itself never receives traffic from the DC agent, so the claim that the DC agent sends login event data directly to FortiGate is the step outside the expected process.

Why the other options are wrong

  • A. A user logging into the Windows domain is the trigger for the whole FSSO flow, so it is a normal step.
  • B. FortiGate matches the source IP of traffic against the IP and user entries in its FSSO logon list to identify the user, which is exactly how FSSO enforcement works.
  • D. The collector agent forwarding login event data to FortiGate is the defining behaviour of DC agent mode, not a missing step.

Question 20

What are two characteristics of HA cluster heartbeat IP addresses in an FortiGate device? (Choose two.)

  1. Heartbeat IP addresses are used to distinguish between cluster members.
  2. The heartbeat interface of the primary device in the cluster is always assigned IP address 169.254.0.1.
  3. Heartbeat interfaces have virtual IP addresses that are manually assigned.
  4. A change in the heartbeat IP address happens when a FortiGate device joins or leaves the cluster.
Show answer and explanation

Correct answer: A, D. Heartbeat IP addresses are used to distinguish between cluster members; A change in the heartbeat IP address happens when a FortiGate device joins or leaves the cluster.

Heartbeat IP addresses in FortiGate HA clusters serve to distinguish between cluster members and identify which device is communicating within the cluster. Additionally, when a FortiGate device joins or leaves the cluster, the heartbeat IP addresses change as part of the cluster membership update process.

Why the other options are wrong

  • B. The heartbeat interface of the primary device is not always assigned the fixed address 169.254.0.1; heartbeat addresses can be manually configured.
  • C. Heartbeat interfaces use link-local addresses automatically assigned, not manually assigned virtual IPs.

That was 20 of 94.

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