Refer to the exhibit.

By default FortiOS creates the following DHCP server scope for the FortiLink interface as shown in the exhibit
What is the objective of the vci-string setting?

1. A. To ignore DHCP requests coming from FortiSwitch and FortiExtender devices
2. B. To reserve IP addresses for FortiSwitch and FortiExtender devices
3. C. To restrict the IP address assignment to FortiSwitch and FortiExtender devices
4. D. To restrict the IP address assignment to devices that have FortiSwitch or FortiExtender as their hostname

Correct Answer: C
According to the exhibit, the DHCP server scope for the FortiLink interface has a vci-string setting with the value “Cisco AP c2700”. This setting is used to match the vendor class identifier (VCI) of the DHCP clients that request an IP address from the DHCP server. The VCI is a text string that uniquely identifies a type of vendor device. Therefore, option C is true because the vci-string setting restricts the IP address assignment to FortiSwitch and FortiExtender devices, which use the VCI “Cisco AP c2700”. Option A is false because the vci-string setting does not ignore DHCP requests coming from FortiSwitch and FortiExtender devices, but rather accepts them. Option B is false because the vci-string setting does not reserve IP addresses for FortiSwitch and FortiExtender devices, but rather assigns them dynamically. Option D is false because the vci-string setting does not restrict the IP address assignment to devices that have FortiSwitch or FortiExtender as their hostname, but rather to devices that have “Cisco AP c2700” as their VCI.

Refer to the exhibits.

Firewall Policy

Examine the firewall policy configuration and SSID settings
An administrator has configured a guest wireless network on FortiGate using the external captive portal The administrator has verified that the external captive portal URL is correct However wireless users are not able to see the captive portal login page
Given the configuration shown in the exhibit and the SSID settings which configuration change should the administrator make to fix the problem?

1. A. Disable the user group from the SSID configuration
2. B. Enable the captivs-portal-exempt option in the firewall policy with the ID 11.
3. C. Apply a guest.portal user group in the firewall policy with the ID 11.
4. D. Include the wireless client subnet range in the Exempt Source section

Correct Answer: C
According to the FortiGate Administration Guide, “To use an external captive portal, you must configure a user group that uses the external captive portal as the authentication method and apply it to a firewall policy.” Therefore, option C is true because it will allow the wireless users to be redirected to the external captive portal URL when they try to access the Internet. Option A is false because disabling the user group from the SSID configuration will prevent the wireless users from being authenticated by the FortiGate device. Option B is false because enabling the captive-portal-exempt option in the firewall policy will bypass the captive portal authentication for the wireless users, which is not the desired outcome. Option D is false because including the wireless client subnet range in the Exempt Source section will also bypass the captive portal authentication for the wireless users, which is not the desired outcome.

Which two statements about MAC address quarantine by redirect mode are true? (Choose two)

1. A. The quarantined device is moved to the quarantine VLAN
2. B. The device MACaddress is added to the Quarantined Devices firewall address group
3. C. It is the default mode for MAC address quarantine
4. D. The quarantined device is kept in the current VLAN

Correct Answer: BD
According to the FortiGate Administration Guide, “MAC address quarantine by redirect mode allows you to quarantine devices by adding their MAC addresses to a firewall address group called Quarantined Devices. The quarantined devices are kept in their current VLANs, but their traffic is redirected to a quarantine portal.” Therefore, options B and D are true because they describe the statements about MAC address quarantine by redirect mode. Option A is false because the quarantined device is not moved to the quarantine VLAN, but rather kept in the current VLAN. Option C is false because redirect mode is not the default mode for MAC address quarantine, but rather an alternative mode that can be enabled by setting mac-quarantine-mode to redirect.
https://docs.fortinet.com/document/fortiap/7.0.0/configuration-guide/734537/radius-authenticated-dynamic-vlan
: https://docs.fortinet.com/document/fortigate/7.0.0/administration-guide/734537/mac-address-quarantine

Refer to the exhibits.

Exhibit.

Examine the troubleshooting outputs shown in the exhibits
Users have been reporting issues with the speed of their wireless connection in a particular part of the wireless network The interface that is having issues is the 2 4 GHz interface that is currently configured on channel 6
The administrator of the wireless network has investigated and surveyed the local RF environment using the tools available at the AP and FortiGate
Which configuration would improve the wireless connection?

1. A. Change the AP 2 4 GHz channel to 11
2. B. Change the AP 2 4 GHz channel to 1.
3. C. Change the AP 2 4 GHz channel to 9.
4. D. Change the AP 2 4 GHz channel to 13.

Correct Answer: B
According to the exhibits, the AP 2.4 GHz interface is currently configured on channel 6, which is overlapping with other nearby APs on channels 4 and 8. This can cause interference and reduce the wireless performance. Therefore, changing the AP 2.4 GHz channel to 1 would improve the wireless connection, as it would avoid the overlapping channels and use a non-overlapping channel instead. Option A is false because changing the AP 2.4 GHz channel to 11 would still overlap with other nearby APs on channels 9 and 13. Option C is false because changing the AP 2.4 GHz channel to 9 would still overlap with other nearby APs on channels 6, 8, and 11. Option D is false because changing the AP 2.4 GHz channel to 13 would still overlap with other nearby APs on channels 9 and 11.

Refer to the exhibit.

Examine the network diagram and packet capture shown in the exhibit
The packet capture was taken between FortiGate and FortiAuthenticator and shows a RADIUS Access-Request packet sent by FortiSwitch to FortiAuthenticator through FortiGate
Why does the User-Name attribute in the RADIUS Access-Request packet contain the client MAC address?

1. A. The client is performing AD machine authentication
2. B. FortiSwitch is authenticating the client using MAC authentication bypass
3. C. The client is performing user authentication
4. D. FortiSwitch is sending a RADIUS accounting message to FortiAuthenticator

Correct Answer: B
According to the exhibit, the User-Name attribute in the RADIUS Access-Request packet contains the client MAC address of 00:0c:29:6a:2b:3d. This indicates that FortiSwitch is authenticating the client using MAC authentication bypass (MAB), which is a method of authenticating devices that do not support 802.1X by using their MAC address as the username and password. Therefore, option B is true because it explains why the User-Name attribute contains the client MAC address. Option A is false because AD machine authentication uses a computer account name and password, not a MAC address. Option C is false because user authentication uses a user name and password, not a MAC address. Option D is false because FortiSwitch is sending a RADIUS Access-Request message to FortiAuthenticator, not a RADIUS accounting message.