Inter-VLAN Routing JN0-352 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   A host in VLAN 10 cannot ping a host in VLAN 20. Both hosts have correct IP configurations and are connected to access ports in their respective VLANs. What is the most likely cause?

   • AThe hosts are using the same IP subnet
   • BThe switch ports are not configured as trunk ports
   • CThe VLANs are not created on the switch
   • DThe default gateway on the hosts is not set or is incorrect
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   A Juniper EX4300 is configured as a Layer 3 switch with VLANs 50 and 60. IRB interfaces irb.50 (192.168.50.1/24) and irb.60 (192.168.60.1/24) are created, and IP routing is enabled. Hosts in VLAN 50 can ping irb.50, and hosts in VLAN 60 can ping irb.60, but hosts cannot ping across VLANs. What is the most likely cause?

   • AThe IRB interfaces are not assigned to the correct VLANs.
   • BThe hosts are using the wrong default gateway (e.g., VLAN 50 hosts using 192.168.60.1).
   • CThe switch does not have a route to the other VLAN.
   • DThe switch ports are not configured as trunk ports.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A network has a Juniper EX2300 switch and a separate router. The switch has VLANs 10 and 20. The router has subinterfaces for both VLANs. The network team wants to reduce latency for inter-VLAN traffic. What is the most effective change?

   • AConfigure the switch ports as access ports instead of trunk ports.
   • BReplace the router with a Layer 3 switch and use SVIs for inter-VLAN routing.
   • CUse static routes instead of dynamic routing on the router.
   • DIncrease the bandwidth of the trunk link between the switch and router.
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   Which command would you use to verify that a trunk link is correctly carrying multiple VLANs on a Juniper switch?

   • Ashow route
   • Bshow interfaces terse
   • Cshow vlans
   • Dshow arp
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   A company has a Juniper EX3400 switch with VLANs 10, 20, and 30. They need to route between all VLANs. The network team is considering using router-on-a-stick with an external router versus using the switch as a Layer 3 switch. What is the primary advantage of using the Layer 3 switch?

   • AIt allows the use of static routes instead of dynamic routing.
   • BIt eliminates the need for VLAN trunking on the switch.
   • CIt provides higher throughput for inter-VLAN routing because routing is done in hardware.
   • DIt reduces the number of VLANs required on the network.
   Reveal Solution Discussion Select an answer first