Frame Processing JN0-364 Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A switch receives a frame with source MAC 00:11:22:33:44:55 on port ge-0/0/1, which is an access port in VLAN 100. The MAC address table already has an entry for this MAC associated with port ge-0/0/2 in VLAN 100. What does the switch do?

   • AIt drops the frame because the source MAC is already known.
   • BIt updates the MAC address table to associate the MAC with ge-0/0/1 and VLAN 100.
   • CIt floods the frame out all ports in VLAN 100 because the MAC moved.
   • DIt keeps the existing entry for ge-0/0/2 and forwards the frame only to ge-0/0/2.
   Reveal Solution Discussion Select an answer first
2. 12application · medium

   A switch receives an untagged frame on an access port configured for VLAN 50. The destination MAC address is known and associated with a trunk port. How does the switch forward the frame?

   • AIt adds the VLAN 50 tag and forwards the frame out the trunk port.
   • BIt floods the frame out all trunk ports because the destination is on a trunk.
   • CIt drops the frame because the destination port is a trunk port.
   • DIt forwards the frame out the trunk port without adding a tag.
   Reveal Solution Discussion Select an answer first
4. 13foundation · easy

   When a frame is forwarded out a trunk port, what does the switch do with the 802.1Q tag?

   • AIt inserts the VLAN tag if the frame is untagged.
   • BIt removes the tag and sends the frame untagged.
   • CIt drops the frame if it has a tag.
   • DIt leaves the tag as is, regardless of the VLAN.
   Reveal Solution Discussion Select an answer first
5. 14application · medium

   A frame with an 802.1Q tag for VLAN 30 arrives on a trunk port. The destination MAC address is known and associated with a port that is not a member of VLAN 30. What does the switch do?

   • AIt floods the frame to all ports in VLAN 30 because the destination port is invalid.
   • BIt forwards the frame out the destination port, keeping the VLAN 30 tag.
   • CIt forwards the frame out the destination port, removing the VLAN 30 tag.
   • DIt drops the frame because the destination port is not in the frame's VLAN.
   Reveal Solution Discussion Select an answer first
6. 15application · medium

   A switch receives a frame on port ge-0/0/1 in VLAN 20. The source MAC address is 00:11:22:33:44:55. The MAC address table already has an entry for this MAC on the same port and VLAN. What does the switch do?

   • AIt floods the frame because the source MAC is known.
   • BIt drops the frame because the source MAC is already known.
   • CIt refreshes the aging timer for the existing MAC address entry.
   • DIt deletes the entry and relearns it to ensure accuracy.
   Reveal Solution Discussion Select an answer first