Which two statements are true when setting up an SRX Series device to operate in mixed mode? (Choose two.)

Which two statements are true when setting up an SRX Series device to operate in mixed mode? (Choose two.)
A . A physical interface can be configured to be both a Layer 2 and a Layer 3 interface at the same time.
B . User logical systems support Layer 2 traffic processing.
C . The SRX must be rebooted after configuring at least one Layer 3 and one Layer 2 interface.
D . Packets from Layer 2 interfaces are switched within the same bridge domain.

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Answer: CD

Explanation:

In mixed mode, SRX devices can simultaneously handle Layer 2 switching and Layer 3 routing, but a reboot is required when configuring Layer 2 and Layer 3 interfaces to ensure the configuration takes effect. Layer 2 packets are switched within the defined bridge domain. Further guidance on SRX mixed mode can be found at Juniper Mixed Mode Documentation.

When an SRX Series device is configured in mixed mode, both Layer 2 switching and Layer 3 routing functionalities can be used on the same device. This enables the SRX to act as both a router and a switch for different interfaces. However, there are certain considerations:

Explanation of Answer C (Reboot Requirement):

After configuring the SRX to operate with at least one Layer 2 interface and one Layer 3 interface, the device needs to be rebooted. This is required to properly initialize the mixed mode configuration, as the SRX needs to switch between Layer 2 and Layer 3 processing modes.

Explanation of Answer D (Layer 2 Traffic Handling):

In mixed mode, traffic from Layer 2 interfaces is switched within the same bridge domain. A bridge

domain defines a Layer 2 broadcast domain, and packets from Layer 2 interfaces are forwarded based

on MAC addresses within that domain.

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Reference: Mixed Mode Overview: Juniper SRX devices can operate in mixed mode to handle both Layer 2 and Layer 3 traffic simultaneously.

Reference: Juniper Mixed Mode Documentation.