Juniper JN0-351 Exam Questions Answers

Juniper JN0-351 Study Questions for Exam 2026

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Enterprise Routing and Switching, Specialist Exam JN0-351 Questions and Answers

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Page: 1 / 13
Total Questions: 65

Questions & Answers PDF

• Question 1

  

  Which two statements are correct about using firewall filters on EX Series switches? (Choose two.)

  • You can deploy only stateless firewall filters on an EX Series switch.
  • You can only apply firewall filters to Layer 2 traffic on an EX Series switch.
  • You can apply firewall filters to both Layer 2 and Layer 3 traffic on an EX Series switch.
  • You can deploy both stateless and stateful firewall filters on an EX Series switch.

  Reveal Answer Answer: A,C Next Question

• Question 2

  

  Which statement is correct about IP-IP tunnels?

  • IP-IP tunnels only support encapsulating IP traffic.
  • IP-IP tunnels only support encapsulating non-IP traffic.
  • The TTL in the inner packet is decremented during transit to the tunnel endpoint.
  • There are 24 bytes of overhead with IP-IP encapsulation.

  Reveal Answer Answer: A Next Question

• Question 3

  

  What is a purpose of using a spanning tree protocol?

  • to look up MAC addresses
  • to eliminate broadcast storms
  • to route IP packets
  • to tunnel Ethernet frames

  Reveal Answer Answer: B Next Question

• Question 4

  

  Which statement is correct about the IS-IS ISO NET address?

  • An ISO NET address defined with a system ID of 0000.0000.0000 must be selected as the DIS.
  • An ISO NET address must be unique for each device in the network.
  • You can only define a single ISO NET address per device.
  • The Area ID must match on all devices within a L2 area.

  Reveal Answer Answer: B Next Question

• Question 5

  

  Which two statements correctly describe RSTP port roles? (Choose two.)

  • The designated port forwards data to the downstream network segment or device.
  • The backup port is used as a backup for the root port.
  • The alternate port is a standby port for an edge port.
  • The root port is responsible for forwarding data to the root bridge.

  Reveal Answer Answer: A,D Next Question

• Question 6

  

  You are asked to create a new firewall filter to evaluate Layer 3 traffic that is being sent between VLANs. In this scenario, which two statements are correct? (Choose two.)

  • You should create a family Ethernet-switching firewall filter with the appropriate match criteria and actions.
  • You should apply the firewall filter to the appropriate VLAN.
  • You should create a family inet firewall filter with the appropriate match criteria and actions.
  • You should apply the firewall filter to the appropriate IRB interface.

  Reveal Answer Answer: C,D Next Question

• Question 7

  

  What is the default MAC age-out timer on an EX Series switch?

  • 30 minutes
  • 30 seconds
  • 300 minutes
  • 300 seconds

  Reveal Answer Answer: D Next Question

• Question 8

  

  You want to use filter-based forwarding (FBF) on your Internet peering router to load-balance traffic to two directly connected ISPs based on the source address.Which two statements are correct in this scenario? (Choose two.)

  • FBF uses the no-forwarding routing instance type.
  • FBF uses the forwarding routing instance type.
  • RIB groups are used to copy routes from the inet. o routing table.
  • RIB groups are used to hide routes in the inet. 0 routing table.

  Reveal Answer Answer: B,C Next Question

• Question 9

  

  You are concerned about spoofed MAC addresses on your LAN.Which two Layer 2 security features should you enable to minimize this concern? (Choose two.)

  • dynamic ARP inspection
  • IP source guard
  • DHCP snooping
  • static ARP

  Reveal Answer Answer: A,C Next Question

• Question 10

  

  Which statement is correct about the storm control feature?

  • The storm control feature is enabled in the factory-default configuration on EX Series switches.
  • The storm control feature requires a special license on EX Series switches.
  • The storm control feature is not supported on aggregate Ethernet interfaces.
  • The storm control configuration only applies to traffic being sent between the forwarding and control plane.

  Reveal Answer Answer: A Next Question

Page: 1 / 13
Total Questions: 65

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