Explanation
Secure Network Distributor (SND) is a relevant feature of the Security Gateway because it is used to distribute packets among Firewall instances. SND is a technology that improves the performance and scalability of the Security Gateway by using multiple cores to handle concurrent connections. SND consists of two components:
SND driver and Firewall instances. SND driver is responsible for receiving packets from network interfaces and distributing them to Firewall instances based on a load balancing algorithm. Firewall instances are responsible for inspecting packets according to security policies and forwarding them to their destinations. The other options are either incorrect or not related to SND.

Explanation
A Distinguished Name (DN) is a unique identifier for an object in an LDAP directory, such as a user, a group, or an organization. A DN consists of a sequence of relative distinguished names (RDNs), which are attributes that describe the object. The most common RDNs are:
Common Name (CN): The name of the object, such as a user's full name or a group's name Country: The two-letter ISO code of the country where the object is located, such as US or PK User container (UC): The name of the container that holds the user objects, such as Users or People Domain Component (DC): The name of the domain that the object belongs to, such as checkpoint.com or example.org An Organizational Unit (OU) is not a component of a DN, but a type of object that can be used to organize other objects in a hierarchical structure. An OU can have its own DN, which includes the OU attribute as an RDN, such as OU=Sales,DC=checkpoint,DC=com.
The references are:
Check Point R81 Identity Awareness Administration Guide, page 14
LDAP Distinguished Names
What is a Distinguished Name?

Explanation
How many interfaces can you configure to use the Multi-Queue feature? You can configure up to 5 interfaces to use the Multi-Queue feature. Multi-Queue is a performance enhancement feature that allows distributing the network traffic among multiple CPU cores, instead of using a single core for all traffic. Multi-Queue can be enabled on interfaces that have high traffic load and support multiple receive/transmit queues. Multi-Queue can be configured via SmartConsole or via CLI with the command sim affinity -m. References: R81 Performance Tuning Administration Guide, page 18.

Explanation
To optimize drops you decide to use Priority Queues and fully enable Dynamic Dispatcher. You can enable them by using the command fw ctl multik set_mode 9. This command sets the SecureXL mode to 9, which means that Priority Queues are enabled and Dynamic Dispatcher is fully enabled. References: SecureXL Mechanism