Junos OS

Which Three statements are correct: 

Does LAYER-2 Switches forward traffic addressed to hosts that reside on same collision domain

Does LAYER-2 Switches forward traffic addressed to hosts that reside on a different collision domain.

Layer 2 Switches separate collision domains

Layer 2 Switches separate multicast domains.

Layer 2 Switches forward broadcast traffic.

https://www.juniper.net/documentation/en_US/junos/topics/concept/l2-qfx-series-overview.html

https://www.juniper.net/documentation/en_US/junos/topics/concept/bridging-ex-series-understanding.html

"Segments of a LAN can be linked at the frame level using bridges. Bridging creates separate broadcast domains on the LAN, creating VLANs, which are independent logical networks that group together related devices into separate network segments. The grouping of devices on a VLAN is independent of where the devices are physically located in the LAN. Without bridging and VLANs, all devices on the Ethernet LAN are in a single broadcast domain, and all the devices detect all the packets on the LAN.

Forwarding is the relaying of packets from one network segment to another by nodes in the network. On a VLAN, a frame whose origin and destination are in the same VLAN are forwarded only within the local VLAN."

Does LAYER-2 Switches forward traffic addressed to hosts that reside on same collision domain

YES

Does LAYER-2 Switches forward traffic addressed to hosts that reside on a different collision domain.

No You need a layer 3 device

Layer 2 Switches separate collision domains

YES

Layer 2 Switches separate multicast domains.

NO. 

Layer 2 Switches forward broadcast traffic.

YES

Hi Folks,

Just my 2 cents on this…

Some good documentations on ‘Collision Domains and LAN Segments’,

https://www.juniper.net/documentation/software/jseries/junos93/jseries-config-guide-basic/collision-domains-and-lan-segments.html