Enterprise Routing and Switching, Specialist

Here you have the best Juniper JN0-348 practice exam questions

  • You have 92 total questions across 19 pages (5 per page)
  • These questions were last updated on February 27, 2026
  • This site is not affiliated with or endorsed by Juniper.
Question 1 of 92
What are two benefits of 802.3ad link aggregation? (Choose two.)
Answer

Suggested Answer

The suggested answer is A, D.

802.3ad link aggregation, also known as LACP (Link Aggregation Control Protocol), provides two main benefits: it increases bandwidth and creates physical layer redundancy. By bundling multiple Ethernet links into a single logical link, the overall bandwidth between the devices is increased, allowing for better performance and load distribution across multiple links. Additionally, it provides redundancy because if one link in the aggregation fails, the remaining links continue to carry the traffic, improving the availability and reliability of the network connection.

Community Votes

No votes yet

Join the discussion to cast yours

Question 2 of 92
Which statement is true about IP-IP tunnels?
Answer

Suggested Answer

The suggested answer is B.

In IP-IP tunnels, traffic is encapsulated and forwarded through intermediate devices to the tunnel endpoints. For the end-to-end communication to be successful, the intermediary devices must be able to route packets from the tunnel's source to its destination and vice versa. This requires knowledge of both the source and destination addresses of the tunnel to ensure bidirectional communication. Therefore, intermediate devices must have a route to both the tunnel source address and the tunnel destination address.

Community Votes10 votes
BSuggested
50%
C
50%
Question 3 of 92
You have a conference room with an open network port that is used by employees to connect to the network. You are concerned about rogue switches being connected to this port.
Which two features should you enable on your switch to limit access to this port? (Choose two.)
Answer

Suggested Answer

The suggested answer is C, D.

To limit access to an open network port and prevent rogue switches from being connected, enabling MAC limiting and 802.1X are the most effective measures. MAC limiting restricts the number of MAC addresses that can connect to a port, which would prevent a rogue switch from connecting multiple devices through that port. 802.1X provides network access control by requiring authentication before allowing devices to access the network, ensuring only authorized devices can connect. DHCP snooping and dynamic ARP inspection are primarily used to protect against DHCP spoofing and IP address mismatches, which are issues related to host devices rather than rogue switches.

Community Votes6 votes
CDSuggested
100%
Question 4 of 92
Which statement is correct about IS-IS link state PDUs?
Answer

Suggested Answer

The suggested answer is C.

IS-IS link state PDUs are used to build the link-state database. These PDUs (Protocol Data Units) carry information about the state of the links in the network, which routers use to build a comprehensive map or database of the network topology. This allows routers to calculate the best path through the network.

Community Votes

No votes yet

Join the discussion to cast yours

Question 5 of 92
Which Junos feature allows you to combine multiple interfaces into a single bundle?
Answer

Suggested Answer

The suggested answer is C.

Link Aggregation (LAG) is a feature that allows you to group multiple network interfaces together into a single logical interface. This boosts bandwidth and provides redundancy since if one link fails, the other links in the group can continue to carry traffic.

Community Votes1 vote
CSuggested
100%

About the Juniper JN0-348 Certification Exam

About the Exam

The Juniper JN0-348 (Enterprise Routing and Switching, Specialist) validates your knowledge and skills. Passing demonstrates proficiency and can boost your career prospects in the field.

How to Prepare

Work through all 92 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 JN0-348 questions are regularly updated to reflect the latest exam objectives.