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Juniper JN0-351 考試大綱：

主題簡介
主題 1
  • OSPF: The concepts and operational details of OSPF are explored, providing tools for routing efficiency. Configuration and troubleshooting mastery ensure readiness for both the exam and complex enterprise environments.
主題 2
  • Layer 2 Switching or VLANs: This topic deepens the understanding of Layer 2 switching operations within the Junos OS, including VLAN concepts and benefits. Experienced networking professionals gain insights into configuration, monitoring, and troubleshooting techniques essential for network segmentation and efficiency.
主題 3
  • Layer 2 Security: This topic introduces Layer 2 protection mechanisms and firewall filters to fortify network security. Practical skills in configuring, monitoring, and troubleshooting these features prepare candidates to address exam objectives and real-world challenges effectively.
主題 4
  • High Availability: This topic covers the importance and application of high availability within Junos OS environments. Knowledge in configuring and managing these components is critical for ensuring robust and uninterrupted network operations, aligning with exam expectations.
主題 5
  • Spanning Tree: Networking professionals explore the principles and advantages of the Spanning Tree Protocol (STP) to ensure loop-free topologies in Layer 2 networks.
主題 6
  • Tunnels: The fundamentals of IP tunneling are emphasized, highlighting their requirements and functionalities. Mastery in configuring, monitoring, and troubleshooting tunnels equips professionals to meet the demands of the JN0-351 exam.

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JN0-351證照指南 & JN0-351考題

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最新的 JNCIS-ENT JN0-351 免費考試真題 (Q87-Q92):

問題 #87
Which two statements are correct about using firewall filters on EX Series switches? (Choose two.)

答案：A,B

解題說明：
A is correct because you can deploy only stateless firewall filters on an EX Series switch. A stateless firewall filter is a filter that evaluates each packet individually based on the header information, such as source and destination addresses, protocol, and port numbers1. A stateless firewall filter does not keep track of the state or context of a packet flow, such as the sequence number, flags, or sessioninformation1. EX Series switches support only stateless firewall filters, which are also called access control lists (ACLs) or packet filters2.
C is correct because you can apply firewall filters to both Layer 2 and Layer 3 traffic on an EX Series switch. Layer 2 traffic is traffic that is switched within a VLAN or a bridge domain, while Layer 3 traffic is traffic that is routed between VLANs or networks3. EX Series switches support three types of firewall filters: port (Layer 2) firewall filters, VLAN firewall filters, and router (Layer 3) firewall filters4. You can apply these filters to different interfaces and directions to control the traffic entering or exiting the switch.


問題 #88
You deployed a new EX Series switch with DHCP snooping enabled and you do not see any entries in the snooping databases for an interface. Which two Juniper configurations for that interface caused this issue? (Choose two.)

答案：C,D

解題說明：
A is correct because the interface is configured as a disabled port. A disabled port does not forward any traffic, including DHCP packets. Therefore, DHCP snooping cannot learn any MAC addresses or lease information from a disabled port.
C is correct because the interface is configured as a trunk port. By default, all trunk ports on the switch are trusted for DHCP snooping. This means that DHCP snooping does not inspect or filter any DHCP packets received on a trunk port. Therefore, DHCP snooping does not add any entries to the snooping database for a trunk port.


問題 #89
Which statement is correct regarding the Junos OS "protocols lldp" configuration?

答案：B

解題說明：
Link Layer Discovery Protocol (LLDP) is an industry-standard, vendor-neutral Layer 2 protocol used to advertise information about a device's identity, capabilities, and directly connected neighbors. Because it is not proprietary, LLDP can be used to discover neighboring devices from different vendors, unlike protocols such as Cisco Discovery Protocol (CDP), and it does not require IP connectivity since it operates directly over the data link layer.


問題 #90
Which command displays the output shown in the exhibit?

答案：C

解題說明：
This command shows the Ethernet switching table, which includes information about MAC addresses, their associated VLANs, and the interfaces they are learned on, similar to the output shown in your exhibit.


問題 #91
Which two statements describe NSR? (Choose two.)

答案：A,D


問題 #92
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