Bridging Elements and Terminology JN0-364 Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   In the context of Layer 2 forwarding, what is the primary functional difference between a traditional bridge and a modern switch?

   • AA bridge operates at Layer 3, while a switch operates at Layer 2.
   • BA bridge floods all frames, while a switch filters all frames.
   • CA bridge forwards frames based on MAC addresses, while a switch forwards based on IP addresses.
   • DA bridge typically has a small number of ports and uses software-based forwarding, while a switch has many ports and uses hardware-based forwarding.
   Reveal Solution Discussion Select an answer first
2. 12foundation · easy

   Why is loop prevention necessary in a Layer 2 network?

   • ATo prevent broadcast storms and MAC address table instability caused by redundant paths.
   • BTo improve the speed of MAC address learning.
   • CTo allow switches to route between VLANs.
   • DTo reduce the number of VLANs needed.
   Reveal Solution Discussion Select an answer first
4. 13foundation · easy

   In MAC address learning, what information does a switch record when it receives a frame?

   • AThe destination IP address and the port on which the frame was received.
   • BThe destination MAC address and the port on which the frame was received.
   • CThe source IP address and the port on which the frame was received.
   • DThe source MAC address and the port on which the frame was received.
   Reveal Solution Discussion Select an answer first
5. 14application · medium

   A switch has two ports in VLAN 100: ge-0/0/1 (access) and ge-0/0/2 (trunk, allowing VLAN 100). A frame with an untagged destination MAC arrives on ge-0/0/1. What happens to the frame?

   • AThe switch associates the frame with VLAN 100 and forwards it according to the FDB, tagging it if sent out of ge-0/0/2.
   • BThe switch forwards the frame out of ge-0/0/2 without a VLAN tag.
   • CThe switch drops the frame because it is untagged.
   • DThe switch floods the frame out of all ports, including ports in other VLANs.
   Reveal Solution Discussion Select an answer first
6. 15foundation · easy

   What happens to a MAC address entry in the forwarding table when it ages out?

   • AThe entry is removed, and frames to that MAC address will be flooded until the address is learned again.
   • BThe entry is marked as invalid and frames to that MAC are dropped.
   • CThe entry is moved to a permanent table and never removed.
   • DThe switch sends an ARP request to re-learn the MAC address.
   Reveal Solution Discussion Select an answer first