Which Junos configuration statement enables BPDU protection on an interface?

set ethernet-switching-options bpdu-protection interface ge-0/0/1

set interfaces ge-0/0/1 unit 0 family ethernet-switching bpdu-protection

set security spanning-tree bpdu-protection interface ge-0/0/1

set protocols rstp interface ge-0/0/1 bpdu-protection

Which Junos operational command displays the learned MAC addresses and violation counters for port security?

show ethernet-switching secure-access-port interface

show interfaces ge-0/0/1 extensive

Which Junos configuration statement enables root protection on an interface?

set protocols rstp interface ge-0/0/1 root-protection

set interfaces ge-0/0/1 unit 0 family ethernet-switching root-protection

set ethernet-switching-options root-protection interface ge-0/0/1

set security spanning-tree root-protection interface ge-0/0/1

A network administrator is investigating a report that a user's device cannot connect to the network. The switch port shows a port security violation. The administrator needs to determine which MAC addresses are currently allowed on the port and how many violations have occurred. Which command should the administrator use to gather this information?

show port-security interface ge-0/0/1

show configuration interfaces ge-0/0/1

show interfaces ge-0/0/1 extensive

Which configuration error could cause root protection to not work as expected?

The interface is configured as a trunk port

The interface speed is set incorrectly

Root protection is applied to a root port instead of a designated port

The spanning-tree protocol is disabled

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

Domain 3Objective 6

Configure, Monitor, or Troubleshoot Layer 2 Protection and Port Security JN0-352 Practice Questions (Page 5)

Part of the Layer 2 Security domain, which makes up ~13% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~5–8 in this domain), expect 1–1 from this objective — we provide 30 practice questions to prepare you well beyond it. (estimate)

30questions here

6free pages

14concepts

14 Concepts in This Objective

Layer 2 protection mechanisms
Port security basics
Configuring port security
Monitoring port security
Troubleshooting port security
Configuring BPDU protection
Monitoring BPDU protection
Troubleshooting BPDU protection
Configuring root protection
Monitoring root protection
Troubleshooting root protection
Configuring loop protection
Monitoring loop protection
Troubleshooting loop protection

Questions 21–25

21foundation · easy
Which Junos configuration statement enables BPDU protection on an interface?
Select an answer first
22foundation · easy
Which Junos operational command displays the learned MAC addresses and violation counters for port security?
Select an answer first
23foundation · easy
Which Junos configuration statement enables root protection on an interface?
Select an answer first
24application · medium
A network administrator is investigating a report that a user's device cannot connect to the network. The switch port shows a port security violation. The administrator needs to determine which MAC addresses are currently allowed on the port and how many violations have occurred. Which command should the administrator use to gather this information?
Select an answer first
25foundation · easy
Which configuration error could cause root protection to not work as expected?
Select an answer first

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