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| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Enterprise Routing and Switching, Specialist (JNCIS-ENT) |
| Exam Number: | JN0-351 |
| Exam Format: | Multiple-answer multiple choice, Multiple choice, Single-answer multiple choice |
| Related Certifications: | JNCIE-ENT JNCIA-Junos JNCIP-ENT |
| Available Languages: | English |
| Passing Score: | ~60-70% |
| Exam Price: | USD varies by region (typically around $200–$300 USD) |
| Certificate Validity Period: | 3 years |
| Real Exam Qty: | 65 |
| Exam Duration: | 90 minutes |
| Recommended Training: | Juniper Enterprise Routing & Switching Training Juniper Learning Portal |
| Exam Registration: | Pearson VUE Juniper Exams Juniper Certification Registration |
| Sample Questions: | Juniper JN0-351 Sample Questions |
| Exam Way: | Pearson VUE proctored exam (online or test center) |
| Pre Condition: | JNCIA-Junos (JN0-105) recommended as prerequisite knowledge |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification/certification-tracks/enterprise-routing-switching/jncis-ent.html |
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NEW QUESTION # 163
You are deploying a trunk port with multiple VLANs.
In this scenario, which statement is true about the native VLAN?
Answer: C
Explanation:
In a trunk port configuration with multiple VLANs, the native VLAN carries untagged traffic. This means frames sent or received on the port without a VLAN tag are automatically assigned to the native VLAN.
Here ' s why the other options are incorrect:
* A. The native VLAN must be the default VLAN on the port. This is not necessarily true. The native VLAN and the default VLAN can be different. The default VLAN is the VLAN assigned to untagged traffic on access ports, while the native VLAN applies to trunk ports.
* B. The native VLAN is automatically configured through DHCP. This is incorrect. The native VLAN needs to be manually configured on the switch port. DHCP is used for assigning IP addresses, not VLAN IDs.
* D. The native VLAN is the highest tagged VLAN ID on the port. This is also incorrect. The native VLAN and tagged VLANs are independent. The native VLAN is not related to the highest or lowest tagged VLAN ID.
Therefore, the only true statement is that the native VLAN is an untagged VLAN ID on the port.
:
Trunk Ports and VLANs: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-
0_2_EX/vlan/configuration_guide/b_vlan_152ex_2960-x_cg/b_vlan_152ex_2960-x_cg_chapter_0100.pdf Configuring Trunk Ports: https://community.cisco.com/t5/networking-knowledge-base/how-to-define-the- vlans-allowed-on-a-trunk-link/ta-p/3131083 Understanding Native VLANs: https://www.practicalnetworking.net/tag/vlans/
NEW QUESTION # 164
Click the Exhibit button.
R1 was started at 4:00 PM. R2 and R3 were started at 6:00 PM. R4 was started at 10:00 PM. All routers are in Area 0 and there are no point-to-point links.
Referring to the exhibit, which router is the designated router?
Answer: B
NEW QUESTION # 165
You have DHCP snooping enabled but no entries are automatically created in the snooping database for an interface on your EX Series switch. What are two reasons for the problem?
(Choose two.)
Answer: B,D
Explanation:
If the device connected to the interface has performed a DHCPRELEASE, it releases its IP address back to the DHCP server, resulting in the removal of the corresponding DHCP snooping entry.
If the device connected to the interface is using a static IP address, it will not send DHCP requests, and therefore no entries will be created in the DHCP snooping database for that device.
NEW QUESTION # 166
Exhibit.
The ispi _ inet. 0 route table has currently no routes in it.
What will happen when you commit the configuration shown on the exhibit?
Answer: A
Explanation:
Explanation
The configuration shown in the exhibit is an example of a routing instance of type virtual-router. A routing instance is a collection of routing tables, interfaces, and routing protocol parameters that create a separate routing domain on a Juniper device1. A virtual-router routing instance allows administrators to divide a device into multiple independent virtual routers, each with its own routing table2.
The configuration also includes a rib-group statement, which is used to import routes from one routing table to another. A rib-group consists of an import-rib statement, which specifies the source routing table, and an export-rib statement, which specifies the destination routing table.
In this case, the rib-group name is inet-to-ispi, and the import-rib statement specifies inet.0 as the source routing table. The export-rib statement specifies ispi.inet.0 as the destination routing table. This means that the routes from inet.0 will be imported into ispi.inet.0.
Therefore, the correct answer is B. The inet.0 route table will be imported into the ispi.inet.0 route table.
References:
1: Routing Instances Overview 2: Virtual Routing Instances : [rib-group (Routing Options)]
NEW QUESTION # 167
Which two statements are correct about using firewall filters on EX Series switches? (Choose two.)
Answer: A,C
Explanation:
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 numbers. A stateless firewall filter does not keep track of the state or context of a packet flow, such as the sequence number, flags, or session information. EX Series switches support only stateless firewall filters, which are also called access control lists (ACLs) or packet filters.
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 networks. EX Series switches support three types of firewall filters: port (Layer 2) firewall filters, VLAN firewall filters, and router (Layer
3) firewall filters. You can apply these filters to different interfaces and directions to control the traffic entering or exiting the switch.
NEW QUESTION # 168
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