According to the output of the commandshow configuration services security-intelligence url, the SRX Series device is directly enrolled with Juniper ATP Cloud.This is indicated by the URLhttps://cloudfeeds.argon.junipersecurity.net/api/manifest.xml, which is the default URL for Juniper ATP Cloud1.This means that the device is not enrolled with Policy Enforcer, which would use a different URL that includes the IP address of the Policy Enforcer server2. Therefore, the problem in this scenario is that the device is directly enrolled with Juniper ATP Cloud, which prevents it from being enrolled with Policy Enforcer.

To enroll the device with Policy Enforcer, the user needs to disenroll the device from Juniper ATP Cloud first. This can be done by using the following command:

delete services security-intelligence url

This command will remove the Juniper ATP Cloud URL from the device configuration and stop the device from receiving threat feeds from Juniper ATP Cloud1.After that, the user can enroll the device with Policy Enforcer by using the Security Director GUI or the SLAX script2.

The command 'show security dynamic-address category-name DS hield' will show the IP addresses that are part of the DS hield category. By filtering the output of this command with the 'match 203.0.113.5' command, you can determine if the IP address 203.0.113.5 is part of the DS hield feed. This command will check the feeds that are configured on SRX Series device and are associated to juniper ATP Cloud.

The exhibit shows the output of the show security mka sessions summary command on an SRX Series device. This command displays the status of the MACsec Key Agreement (MKA) sessions on the device. In the output, we can see that there are two CAKs configured for the interface ge-0/0/1 - FFFF and EEEE. The CAK named FFFF has the type preceding and the status live. The CAK named EEEE has the type fallback and the status active.

The two statements that are true about the CAK status for the CAK named FFFF are:

CAK is not used for encryption and decryption of the MACsec session. This is because the CAK is only used for authentication and key exchange between the MACsec peers. The CAK is not used for encrypting or decrypting the MACsec traffic. The encryption and decryption of the MACsec session is done by the Secure Association Key (SAK), which is derived from the CAK using the MKA protocol.

SAK is not generated using this key. This is because the CAK named FFFF has the type preceding, which means that it is a legacy key that is used for backward compatibility with older MACsec devices. The preceding key is not used for generating the SAK, but only for authenticating the MACsec peers. The SAK is generated using the active key, which is the CAK named EEEE in this case.

According to the Juniper documentation, a tenant system is a logical system that supports routing, services, and security features. A tenant system can be configured to log binary security events to a remote server using the pi security profile. The pi security profile specifies the tenant name, the server address, the server port, and the protocol for logging binary security events. In the exhibit, the pi security profile is configured with the server address 10.0.0.1, the server port 514, and the protocol UDP. However, the tenant name is missing from the configuration. To complete the configuration, the tenant name must be configured as local for the pi security profile. This is because the local tenant name is used to identify the tenant system that is sending the binary security events to the remote server. Therefore, the correct statement to complete the configuration is D.Configure the tenant as local for the pi security profile.Reference: [Tenant Systems Overview]1, [Configuring Binary Security Event Logging for Tenant Systems]2

1: https://www.juniper.net/documentation/us/en/software/junos/logical-system-security/topics/topic-map/tenant-systems-overview.html2: https://www.juniper.net/documentation/us/en/software/junos/logical-system-security/topics/task/security-tenant-systems-binary-logging-configuring.html

According to the Juniper documentation, Juniper ATP Cloud supports the following modes:

Layer 3 mode: In this mode, the SRX Series device acts as a Layer 3 gateway and routes traffic between different subnets. The SRX Series device performs NAT and security policy enforcement on the traffic and sends a copy of the traffic to Juniper ATP Cloud for analysis.This mode is suitable for networks that have multiple subnets and require NAT and firewall functions1

Transparent mode: In this mode, the SRX Series device acts as a Layer 2 bridge and forwards traffic between the same subnet. The SRX Series device does not perform NAT or security policy enforcement on the traffic, but sends a copy of the traffic to Juniper ATP Cloud for analysis.This mode is suitable for networks that have a single subnet and do not require NAT or firewall functions1

The other two modes, global mode and private mode, are not supported by Juniper ATP Cloud. Global mode is a configuration option for Juniper ATP Appliance, which is an on-premises solution that provides threat detection and prevention.Private mode is a configuration option for Juniper ATP Private Cloud, which is a cloud-based solution that provides threat detection and prevention within a private network23

1:Juniper Advanced Threat Prevention Cloud | ATP Cloud | Juniper Networks2:Juniper Advanced Threat Prevention Appliance | ATP Appliance | Juniper Networks3: [Juniper Advanced Threat Prevention Private Cloud | ATP Private Cloud | Juniper Networks]