In Junos, how is an IRB interface associated with a specific VLAN?

By placing the IRB interface in the same routing instance as the VLAN.

By assigning the VLAN ID directly to the IRB interface.

By configuring the IRB interface with the same name as the VLAN.

By referencing the IRB interface in the VLAN configuration under 'vlans'.

A network engineer is explaining how IRB interfaces handle traffic. Which statement is true regarding the operation of IRB interfaces?

IRB interfaces require a routing protocol to forward traffic between VLANs.

IRB interfaces are used only for management traffic and do not forward data.

IRB interfaces only process Layer 3 traffic and ignore Layer 2 frames.

IRB interfaces process both Layer 2 and Layer 3 traffic, forwarding Layer 2 frames within the VLAN and routing Layer 3 packets between VLANs.

What is the role of the routing instance in the operation of an IRB interface?

It determines the routing table and forwarding decisions for traffic that enters the IRB interface.

It assigns the MAC address to the IRB interface.

It provides the Layer 2 forwarding table for the IRB interface.

It defines the VLAN membership for the IRB interface.

A network engineer is explaining to a customer how IRB provides gateway functionality. Which statement is true regarding the relationship between IRB interfaces and VLANs?

An IRB interface is associated with a specific VLAN and provides the Layer 3 gateway for that VLAN's subnet.

Each VLAN can have multiple IRB interfaces, each providing a different gateway for the same subnet.

An IRB interface can be associated with multiple VLANs, providing a single gateway for all of them.

IRB interfaces are only used for Layer 2 forwarding and do not provide gateways.

Juniper NetworksCertified Specialist, Service Provider Routing and Switching (JNCIS-SP)

Domain 5Objective 8

Integrated Routing and Bridging (IRB) JN0-364 Practice Questions (Page 2)

Part of the Layer 2 Bridging and VLANs domain, which makes up ~11% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–7 in this domain), expect 1–1 from this objective — we provide 15 practice questions to prepare you well beyond it. (estimate)

15questions here

3free pages

5concepts

Questions 6–10

6foundation · easy
A host in VLAN 10 cannot ping a host in VLAN 20. The IRB interfaces for both VLANs are configured with correct IP addresses. Which Junos CLI command would you use to verify that the IRB interfaces are operationally up?
Select an answer first
7foundation · easy
In Junos, how is an IRB interface associated with a specific VLAN?
Select an answer first
8application · medium
A network engineer is explaining how IRB interfaces handle traffic. Which statement is true regarding the operation of IRB interfaces?
Select an answer first
9foundation · easy
What is the role of the routing instance in the operation of an IRB interface?
Select an answer first
10application · medium
A network engineer is explaining to a customer how IRB provides gateway functionality. Which statement is true regarding the relationship between IRB interfaces and VLANs?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to JN0-364

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by Juniper Networks. “JN0-364” is a trademark of its owner, used for identification only.