PCNSE7 · Question #117
PCNSE7 Question #117: Real Exam Question with Answer & Explanation
The correct answer is A. Layer 3 subinterface type with specified tag. The interface ethernet1/15 is configured as a layer 3 interface. Subinterfaces corresponding to each one of the VLAN are created off of the parent interface Ethernet 1/15. Each subinterface is assigned a VLAN tag and an IP address corresponding to the VLAN provides connectivity.
Question
Exhibit
Options
- ALayer 3 subinterface type with specified tag
- BLayer 3 interface type with specified tag
- CTrunk interface type with specified lag
- DLayer 2 interface type with a VLAN assigned
Explanation
The interface ethernet1/15 is configured as a layer 3 interface. Subinterfaces corresponding to each one of the VLAN are created off of the parent interface Ethernet 1/15. Each subinterface is assigned a VLAN tag and an IP address corresponding to the VLAN provides connectivity. Note: Inter VLAN routing with each VLAN in a unique IP subnet In order for network devices in different VLANs to communicate, a router must be used to route traffic between the VLANs. While VLANs help to control local traffic, if a device in one VLAN needs to communicate with a device in another VLAN, one or more routers must be used for inter VLAN communication. In this configuration a Palo Alto networks firewall can used to securely route traffic within the VLAN. This is also commonly called "one arm routing" or "router on a stick".
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