The type of Endpoint Identity Agent that includes packet tagging and computer authentication is Full. Packet tagging is a feature that allows the Endpoint Identity Agent to add a tag to the packets sent by the user's device, which contains the user's identity information. This way, the Security Gateway can identify the user without requiring additional authentication methods. Computer authentication is a feature that allows the Endpoint Identity Agent to authenticate the user's device using a certificate, which ensures that only authorized devices can access the network resources. The Full Endpoint Identity Agent supports both packet tagging and computer authentication, as well as other features such as Single Sign-On (SSO), Multi-Factor Authentication (MFA), and VPN.
The references are:
Check Point R81 Identity Awareness Administration Guide, page 15
Endpoint Identity Agent - Check Point CheckMates
Check Point Identity Agent - All flavors for Windows OS in a single package (Full, Light, v1 and v2 for Terminal Server)

When SecureXL is enabled, all packets should be accelerated, except packets that match the following conditions: CIFS packets. SecureXL is a technology that accelerates network traffic processing by offloading intensive operations from the Firewall kernel to a dedicated SecureXL device. However, some packets cannot be accelerated by SecureXL due to various reasons, such as unsupported features, security policy settings, or protocol limitations. One example of packets that cannot be accelerated by SecureXL are CIFS packets, which are used for file sharing and access over SMB protocol. CIFS packets are not accelerated by SecureXL because they require stateful inspection by the Firewall kernel.

The best way to test if the policy from two weeks ago have the same issue is to install the specific version of the policy from the installation history view of the gateway. This way, you can keep the changes from the last weeks in the management server and revert back to them later if needed. You do not need to take a backup or a snapshot of the gateway or the management server for this purpose. Reference: [Check Point Security Expert R81 Administration Guide], page 34.

In SmartEvent, the administrator can configure different types of automatic reactions, which include:
Mail notifications
Blocking the source of the event
Blocking the event activity
Running an external script
Sending an SNMP trap
So, the correct answer is "Mail, Block Source, Block Event Activity, External Script, SNMP Trap."

The benefit of fw monitor over tcpdump is that with fw monitor, you can see the inspection points, which cannot be seen in tcpdump. Inspection points are the locations in the firewall kernel where packets are inspected by the security policy and other software blades. Fw monitor allows you to capture packets at different inspection points and see how they are processed by the firewall. Tcpdump, on the other hand, is a generic packet capture tool that only shows the packets as they enter or leave the network interface. Reference: Check Point Security Expert R81 Course, fw monitor, tcpdump