A service provider is considering MPLS over GRE to interconnect customer sites across an IP network. The provider is concerned about the overhead added by the GRE encapsulation. What is the total overhead added by GRE and IP headers when encapsulating an MPLS packet?

16 bytes (12 bytes IP + 4 bytes GRE)

24 bytes (20 bytes IP + 4 bytes GRE)

28 bytes (20 bytes IP + 8 bytes GRE)

A large enterprise is deploying EVPN with VXLAN across multiple data centers. The network team wants to ensure that a host's MAC address is reachable from any VTEP in the fabric, even if the host moves to a different location. Which EVPN feature is specifically designed to handle host mobility?

MAC mobility extended community

A data center operator is deploying EVPN with VXLAN and wants to reduce the amount of broadcast traffic in the overlay. The operator is considering ARP suppression. How does ARP suppression work in an EVPN-VXLAN fabric?

The VTEP answers ARP requests on behalf of remote hosts using the MAC and IP information learned via EVPN.

The VTEP floods all ARP requests to all other VTEPs, but only the target host responds.

The VTEP drops all ARP requests and relies on static ARP entries.

The VTEP uses the VXLAN VNI to identify the target host and forwards the ARP request only to that host.

What is a key advantage of GENEVE's tunnel header over VXLAN's header?

GENEVE uses a fixed 8-byte header for lower overhead

GENEVE supports a larger VNI field than VXLAN

GENEVE allows optional variable-length fields for extensibility

GENEVE provides built-in encryption

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 1)

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 1–5

1foundation · easy
Which protocol is most suitable for extending Layer 2 segments across a Layer 3 data center fabric with high scalability?
Select an answer first
2application · easy
A service provider is considering MPLS over GRE to interconnect customer sites across an IP network. The provider is concerned about the overhead added by the GRE encapsulation. What is the total overhead added by GRE and IP headers when encapsulating an MPLS packet?
Select an answer first
3expert · medium
A large enterprise is deploying EVPN with VXLAN across multiple data centers. The network team wants to ensure that a host's MAC address is reachable from any VTEP in the fabric, even if the host moves to a different location. Which EVPN feature is specifically designed to handle host mobility?
Select an answer first
4expert · medium
A data center operator is deploying EVPN with VXLAN and wants to reduce the amount of broadcast traffic in the overlay. The operator is considering ARP suppression. How does ARP suppression work in an EVPN-VXLAN fabric?
Select an answer first
5foundation · easy
What is a key advantage of GENEVE's tunnel header over VXLAN's header?
Select an answer first

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