Enterprise Routing and Switching, Specialist (JNCIS-ENT)

Here you have the best Juniper JN0-349 practice exam questions

  • You have 95 total questions across 19 pages (5 per page)
  • These questions were last updated on February 26, 2026
  • This site is not affiliated with or endorsed by Juniper.
Question 1 of 95
Your BGP router receives routes from two upstream ISPs: ISP A and ISP B.
In this scenario, which change would you make to prefer routes from ISP A?
Answer

Suggested Answer

The suggested answer is A.

The local-preference attribute in BGP is used to prioritize routes within an autonomous system. A higher local-preference value indicates a more preferred route. By setting the local-preference attribute for routes received from ISP A to 200, which is higher than the default value of 100 used by routes received from ISP B, the BGP router will prefer routes from ISP A over those from ISP B.

Community Votes5 votes
ASuggested
100%
Question 2 of 95
Each PC and IP phone in your network is connected to a switch using the same port. All incoming data traffic is untagged and belongs to the v10 VLAN, while traffic coming from the IP phones is tagged with a VLAN value of 20 and should belong to the v20 VLAN on your switch.
In this scenario, which statement is correct?
Answer

Suggested Answer

The suggested answer is A.

For handling traffic from IP phones (which is tagged with a VLAN value) and separating it from untagged traffic (usually from PCs), enabling the voice VLAN feature on the incoming interfaces is the correct approach. This configuration allows the switch to recognize and prioritize voice traffic by assigning the v20 VLAN specifically for it, ensuring appropriate handling and quality of service for voice communications.

Community Votes4 votes
CMost voted
100%
Question 3 of 95
What are three reasons a BGP route would be hidden? (Choose three.)
Answer

Suggested Answer

The suggested answer is A, B, D.

A BGP route can be hidden for several reasons. First, if the AS Path contains a 0, the route is considered invalid since AS 0 is reserved and should not appear in a valid AS Path. Second, a damping policy can suppress a route if it is determined to be unstable, temporarily hiding it to maintain network stability. Lastly, if the next hop for the BGP route is unreachable, the route cannot be utilized or advertised, leading it to be hidden. These reasons are critical for ensuring reliable and stable BGP route management.

Community Votes6 votes
ABDSuggested
100%
Question 4 of 95
Click the Exhibit button.
Exam JN0-349: Question 4 - Image 1
You have an ESXi host that is connected to ge-0/0/23 on a Juniper EX Series switch. You added a new VM that will also use the same ge-0/0/23 interface. Unfortunately, the new VM is not able to reach external devices.
Referring to the exhibit, which command would solve this problem?
Answer

Suggested Answer

The suggested answer is A.

The exhibit shows that the current MAC address limit for interface ge-0/0/23.0 is set to 2, and the limit for the VLAN switch-options is set to 3. Since multiple VMs on the same port may exceed this limit, increasing the VLAN-level MAC address limit will accommodate more MAC addresses across interfaces within the VLAN. Therefore, setting 'vlans default switch-options interface-mac-limit' to a higher value, like 4, ensures that the new VM can communicate without hitting the limit.

Community Votes2 votes
CMost voted
100%
Question 5 of 95
Click the Exhibit button.
Exam JN0-349: Question 5 - Image 1
A routing table contains multiple BGP routes to the same destination prefix. The route preference is the same for each route.
Referring to the exhibit, which route would be selected?
Answer

Suggested Answer

The suggested answer is B.

In BGP route selection, the primary criteria is the highest Local Preference. Among the routes listed, Route B has the highest Local Preference value of 150. Therefore, Route B would be selected.

Community Votes4 votes
BSuggested
75%
D
25%

About the Juniper JN0-349 Certification Exam

About the Exam

The Juniper JN0-349 (Enterprise Routing and Switching, Specialist (JNCIS-ENT)) validates your knowledge and skills. Passing demonstrates proficiency and can boost your career prospects in the field.

How to Prepare

Work through all 95 practice questions across 19 pages. Focus on understanding the reasoning behind each answer rather than memorizing responses to be ready for any variation on the real exam.

Why Practice Exams?

Practice exams help you familiarize yourself with the question format, manage your time, and reduce anxiety on the test day. Our JN0-349 questions are regularly updated to reflect the latest exam objectives.