A service provider is interconnecting two MPLS domains over an IP-only backbone that does not support MPLS. The team decides to use MPLS over GRE. What is the primary purpose of the GRE tunnel in this scenario?

To translate MPLS labels into GRE keys, eliminating the need for MPLS forwarding in the backbone.

To provide encryption for MPLS packets, ensuring confidentiality across the public IP backbone.

To carry MPLS packets across the IP backbone by encapsulating them in GRE, allowing MPLS labels to be preserved end-to-end.

To replace MPLS with GRE as the forwarding mechanism, using GRE keys as labels.

A service provider is considering MPLS over GRE and MPLS over UDP for different parts of its network. The provider wants to use MPLS over UDP in the data center and MPLS over GRE in the WAN. What is the primary reason for this choice?

MPLS over GRE is faster than MPLS over UDP, making it suitable for the WAN.

MPLS over UDP is more secure than MPLS over GRE, making it suitable for the data center.

MPLS over UDP provides better load balancing in the data center, while MPLS over GRE is more compatible with existing WAN equipment.

MPLS over GRE has lower overhead than MPLS over UDP, making it better for the WAN.

A network engineer is designing a VXLAN overlay and needs to ensure that the overlay can support both IPv4 and IPv6 traffic from hosts. The underlay is IPv4-only. What is the correct approach?

VXLAN can only carry IPv4 traffic; IPv6 traffic must be translated to IPv4 before encapsulation.

VXLAN uses the VNI to differentiate between IPv4 and IPv6 traffic, requiring separate VNIs for each.

VXLAN requires the underlay to be IPv6 to support IPv6 host traffic.

VXLAN can encapsulate both IPv4 and IPv6 frames in the inner Ethernet frame, regardless of the underlay IP version.

How does VXLAN provide Layer 2 connectivity over a Layer 3 network?

By replacing the Ethernet header with an IP header

By encapsulating the original Ethernet frame in a UDP/IP packet

By creating a point-to-point GRE tunnel between switches

By using MPLS labels to carry Ethernet frames

Juniper NetworksCertified Associate, Cloud

Domain 3Objective 3

Encapsulation and Tunneling (MPLS over GRE, MPLS over UDP, VXLAN, EVPN with VXLAN, GENEVE) JN0-214 Practice Questions (Page 4)

Part of the Network Virtualization domain, which makes up ~10% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–6 in this domain), expect 1–2 from this objective — we provide 30 practice questions to prepare you well beyond it. (estimate)

30questions here

6free pages

6concepts

Questions 16–20

16application · medium
A network equipment vendor is designing a new overlay protocol that must support future extensions such as in-network telemetry and additional metadata without requiring a new protocol version. Which encapsulation protocol is best suited for this requirement?
Select an answer first
17application · medium
A service provider is interconnecting two MPLS domains over an IP-only backbone that does not support MPLS. The team decides to use MPLS over GRE. What is the primary purpose of the GRE tunnel in this scenario?
Select an answer first
18expert · medium
A service provider is considering MPLS over GRE and MPLS over UDP for different parts of its network. The provider wants to use MPLS over UDP in the data center and MPLS over GRE in the WAN. What is the primary reason for this choice?
Select an answer first
19expert · medium
A network engineer is designing a VXLAN overlay and needs to ensure that the overlay can support both IPv4 and IPv6 traffic from hosts. The underlay is IPv4-only. What is the correct approach?
Select an answer first
20foundation · easy
How does VXLAN provide Layer 2 connectivity over a Layer 3 network?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to JN0-214

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by Juniper Networks. “JN0-214” is a trademark of its owner, used for identification only.