BPDU, Loop, or Root Protection JN0-352 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Which statement correctly describes the interaction between BPDU protection and loop protection on a Junos switch?

   • AThey cannot be enabled on the same port because they have conflicting behaviors.
   • BThey can be enabled on the same port, and both mechanisms work independently to protect the spanning-tree topology.
   • CBPDU protection is only effective if loop protection is also enabled.
   • DLoop protection overrides BPDU protection if both are enabled.
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   What is the purpose of root protection on a Junos switch port?

   • ATo enforce the root bridge placement by ignoring inferior BPDUs on designated ports.
   • BTo disable a port when it stops receiving BPDUs, preventing loops.
   • CTo disable a port if it receives a BPDU, preventing unauthorized switches from connecting.
   • DTo prevent a port from becoming a root port by ignoring superior BPDUs.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A network administrator is configuring a new access switch for a conference room where visitors frequently connect laptops. The switch connects to the distribution layer via a trunk. The administrator wants to prevent a visitor from accidentally connecting a small switch that could disrupt the spanning-tree topology. Which configuration should be applied on the access ports?

   • AConfigure the access ports as edge ports.
   • BEnable BPDU protection on the access ports.
   • CEnable root protection on the access ports.
   • DEnable loop protection on the access ports.
   Reveal Solution Discussion Select an answer first
5. 4expert · hard

   A network team is designing a new access layer for a campus network. They have three types of ports: ports connecting to end-user devices, ports connecting to other switches, and ports connecting to a legacy switch that does not support rapid spanning-tree. The team wants to prevent unauthorized switches from being connected to end-user ports, prevent loops if a switch stops sending BPDUs, and ensure the root bridge remains the core switch. Which combination of protection mechanisms should be applied?

   • ARoot protection on end-user ports, BPDU protection on inter-switch ports, and loop protection on the core-facing ports
   • BBPDU protection on end-user ports, loop protection on inter-switch ports, and root protection on the core-facing ports
   • CLoop protection on end-user ports, root protection on inter-switch ports, and BPDU protection on the core-facing ports
   • DBPDU protection on all ports, loop protection on all ports, and root protection on all ports
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   Which statement correctly describes the behavior of root protection on a Junos switch?

   • AIt disables the port if it stops receiving BPDUs, preventing loops.
   • BIt ignores superior BPDUs on designated ports, preventing the port from becoming a root port.
   • CIt ignores inferior BPDUs on designated ports, preventing the port from becoming a root port.
   • DIt disables the port if a superior BPDU is received.
   Reveal Solution Discussion Select an answer first