In a router-on-a-stick configuration, what is the purpose of creating subinterfaces on the router's physical interface?

To increase the bandwidth of the link between the router and switch

To allow the router to route between VLANs using a single physical link

To provide redundancy for the router in case of a failure

To enable the router to perform Layer 2 switching

A campus network uses a Juniper EX4300 Layer 3 switch as the core. VLAN 100 (192.168.100.0/24) and VLAN 200 (192.168.200.0/24) are configured on the switch. You need to route between these VLANs without adding an external router. What is the most efficient configuration?

Create VLAN 100 and VLAN 200, assign IP addresses to their IRB interfaces (irb.100 and irb.200), and enable IP routing on the switch.

Create a single IRB interface (irb.0) with an IP from a supernet that covers both VLANs.

Configure a trunk port to an external router and create subinterfaces on the router for each VLAN.

Assign IP addresses directly to the physical interfaces that connect to access switches in each VLAN.

A Juniper EX4300 is used as a Layer 3 switch. VLAN 100 (192.168.100.0/24) and VLAN 200 (192.168.200.0/24) have IRB interfaces with IPs 192.168.100.1 and 192.168.200.1. IP routing is enabled. A host in VLAN 100 can ping 192.168.100.1 but cannot ping a host in VLAN 200. What is the most likely cause?

The switch ports are not configured as trunk ports.

The host in VLAN 100 has a default gateway of 192.168.200.1.

The switch does not have a route to 192.168.200.0/24.

The IRB interface for VLAN 200 is not assigned to the correct VLAN.

What is a Switched Virtual Interface (SVI) on a Layer 3 switch?

A physical interface that connects to a router

A virtual interface that provides a Layer 3 gateway for a VLAN

A port that is assigned to a single VLAN

A trunk interface that carries multiple VLANs

Juniper NetworksCertified Specialist, Enterprise Routing and Switching (JNCIS-ENT)

Domain 1Objective 6

Inter-VLAN Routing JN0-352 Practice Questions (Page 2)

Part of the Layer 2 Switching and VLANs domain, which makes up ~15% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~5–9 in this domain), expect 1–1 from this objective — we provide 17 practice questions to prepare you well beyond it. (estimate)

17questions here

4free pages

6concepts

Questions 6–10

6foundation · easy
In a router-on-a-stick configuration, what is the purpose of creating subinterfaces on the router's physical interface?
Select an answer first
7application · medium
A campus network uses a Juniper EX4300 Layer 3 switch as the core. VLAN 100 (192.168.100.0/24) and VLAN 200 (192.168.200.0/24) are configured on the switch. You need to route between these VLANs without adding an external router. What is the most efficient configuration?
Select an answer first
8foundation · easy
Which encapsulation protocol is used on subinterfaces in a router-on-a-stick configuration?
Select an answer first
9application · medium
A Juniper EX4300 is used as a Layer 3 switch. VLAN 100 (192.168.100.0/24) and VLAN 200 (192.168.200.0/24) have IRB interfaces with IPs 192.168.100.1 and 192.168.200.1. IP routing is enabled. A host in VLAN 100 can ping 192.168.100.1 but cannot ping a host in VLAN 200. What is the most likely cause?
Select an answer first
10foundation · easy
What is a Switched Virtual Interface (SVI) on a Layer 3 switch?
Select an answer first

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