What is the purpose of IGMP snooping on a switch?

To convert multicast frames into unicast frames

To prevent broadcast storms in the VLAN

To assign multicast MAC addresses to specific VLANs

To limit multicast traffic to only those ports that have interested receivers

A switch has a MAC address entry for a server that has been moved to a different port. The administrator wants to ensure that frames to the server are forwarded correctly as soon as possible. What should the administrator do?

Wait for the aging timer to expire.

Disable MAC learning on the new port.

Clear the MAC address table entry for the server.

A network administrator is troubleshooting high CPU utilization on a switch. The switch is receiving a large amount of multicast traffic, and the administrator suspects that multicast frames are being flooded to all ports. What is the most effective way to reduce the impact of multicast flooding?

Enable IGMP snooping on the VLAN.

Disable MAC learning on the switch.

Configure the switch as a router.

A switch has a MAC address table that is nearly full. The network administrator is concerned about the impact on frame forwarding. What is the most likely effect of a full MAC address table?

Broadcast frames will be dropped.

Frames to new unknown destinations will be flooded, and existing entries may be overwritten.

The switch will reboot automatically.

A switch receives a frame on port ge-0/0/1. The destination MAC address is associated with port ge-0/0/1 in the MAC address table. What does the switch do with the frame?

It sends the frame to the CPU for further processing

It forwards the frame out port ge-0/0/1

It floods the frame out all other ports

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

Domain 1Objective 2

Frame Processing 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 22 practice questions to prepare you well beyond it. (estimate)

22questions here

5free pages

7concepts

Questions 6–10

6foundation · easy
What is the purpose of IGMP snooping on a switch?
Select an answer first
7expert · medium
A switch has a MAC address entry for a server that has been moved to a different port. The administrator wants to ensure that frames to the server are forwarded correctly as soon as possible. What should the administrator do?
Select an answer first
8expert · medium
A network administrator is troubleshooting high CPU utilization on a switch. The switch is receiving a large amount of multicast traffic, and the administrator suspects that multicast frames are being flooded to all ports. What is the most effective way to reduce the impact of multicast flooding?
Select an answer first
9expert · medium
A switch has a MAC address table that is nearly full. The network administrator is concerned about the impact on frame forwarding. What is the most likely effect of a full MAC address table?
Select an answer first
10foundation · easy
A switch receives a frame on port ge-0/0/1. The destination MAC address is associated with port ge-0/0/1 in the MAC address table. What does the switch do with the frame?
Select an answer first

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