Option A is correct because the address object on the tool FortiGate will not be synchronized with the downstream devices if it has fabric-object set to disable. This option controls whether the address object is shared with other FortiGate devices in the Security Fabric or not1.
Option C is correct because the downstream FortiGate will not receive the address object from the tool FortiGate if it has fabric-object-unification set to local. This option controls whether the downstream FortiGate uses the address objects from the root FortiGate or its own local address objects2.
Option B is incorrect because the root FortiGate has configuration-sync set to enable by default, which means that it will synchronize the address objects with the downstream devices unless they are disabled by the fabric-object option3.
Option D is incorrect because the downstream FortiGate has configuration-sync set to local by default, which means that it will receive the address objects from the root FortiGate unless they are overridden by the fabric-object-unification option4. Reference: =
1: Group address objects synchronized from FortiManager5
2: Security Fabric address object unification6
3: Configuration synchronization7
4: Configuration synchronization7
5: Security Fabric - Fortinet Documentation

The configuration does not show any explicit disabling of NPs (Network Processors) or CPs (Content Processors). In Fortinet Enterprise Firewall, unless explicitly disabled, these processors are enabled by default to handle specific types of traffic efficiently12. Reference := Hardware acceleration | FortiGate / FortiOS 7.2.2 - Fortinet Documentation, NSE 7 Network Security Architect - Fortinet

Option A is correct because to allow SSH, you need to specify SSH in the Service field of the policy configuration. This is because the Service field determines which types of traffic are allowed by the policy1. By default, the Service field is set to App Default, which means that the policy will use the default ports defined by the applications. However, SSH is not one of the default applications, so you need to specify it manually or create a custom service for it2.
Option B is incorrect because configuring port 22 in the Protocol Options field is not enough to allow SSH. The Protocol Options field allows you to customize the protocol inspection and anomaly protection settings for the policy3. However, this field does not override the Service field, which still needs to match the traffic type.
Option C is incorrect because including SSH in the Application field is not enough to allow SSH. The Application field allows you to filter the traffic based on the application signatures and categories4. However, this field does not override the Service field, which still needs to match the traffic type.
Option D is incorrect because selecting an application control profile corresponding to SSH in the Security Profiles section is not enough to allow SSH. The Security Profiles section allows you to apply various security features to the traffic, such as antivirus, web filtering, IPS, etc. However, this section does not override the Service field, which still needs to match the traffic type. Reference: =
1: Firewall policies
2: Services
3: Protocol options profiles
4: Application control

Fail-open is a feature that allows traffic to pass through the IPS sensor without inspection when the sensor fails or is overloaded. If fail-open is set to disable, traffic will be dropped in such scenarios1. References:
= IPS | FortiGate / FortiOS 7.2.3 - Fortinet Documentation
When IPS (Intrusion Prevention System) is configured, iffail-openis set to disable, it means that if the IPS engine fails, traffic will not be allowed to pass through, which can result in traffic being dropped (D). This is in contrast to a fail-open setting, which would allow traffic to bypass the IPS engine if it is not operational.

Option B is correct because the administrator can determine the category of the training.fortinet.com website by looking up the hex value of 34 in the second command output. This is because the first command output shows that the domain and the IP of the website are both in category (Hex) 34, which corresponds to Information Technology in the second command output1.
Option A is incorrect because the administrator does not need to convert the first three digits of the IP hex value to binary. The IP hex value is already in the same format as the category hex value, so the administrator can simply compare them without any conversion2.
Option C is incorrect because the administrator does not need to add both the Pima in and Iphex values of 34 to get the category number. The Pima in and Iphex values are not related to the category number, but to the cache TTL and the database version respectively3.
Option D is incorrect because the administrator does not need to convert the first two digits of the Domain hex value to a decimal value. The Domain hex value is already in the same format as the category hex value, so the administrator can simply compare them without any conversion2. Reference: =
1: Technical Tip: Verify the webfilter cache content4
2: Hexadecimal to Decimal Converter5
3: FortiGate - Fortinet Community6
4: Web filter | FortiGate / FortiOS 7.2.0 - Fortinet Documentation7