In a hub-and-spoke IPsec VPN architecture, what is the primary role of the hub device?

To provide a backup WAN connection for spoke devices

To act as the central device that terminates IPsec tunnels from all spokes and forwards traffic between them

To perform deep packet inspection on all traffic passing through the VPN

To establish direct IPsec tunnels between all spoke devices

In a hub-and-spoke VPN using OSPF, what is a common method to ensure that spoke routers do not form adjacencies with each other?

Disable OSPF on the spoke interfaces facing the WAN

Configure all spokes in the same OSPF area

Use OSPF point-to-multipoint network type on the hub and spoke interfaces

Increase the OSPF hello interval on the spoke interfaces

During IPsec tunnel establishment in a hub-and-spoke VPN, what is the primary purpose of the IKE phase 1 negotiation?

To establish a secure and authenticated channel used to negotiate the IPsec security associations

To exchange routing information between the hub and the spoke

To define the encryption and authentication algorithms for the data plane traffic

To authenticate the user credentials of the remote access client

A spoke can establish an IPsec tunnel to the hub, but cannot reach a network behind another spoke. What is the most likely cause of this issue?

A routing problem, as the spoke may not have a route to the remote spoke's network via the hub

The destination spoke's IPsec tunnel is down

An IPsec encryption algorithm mismatch between the two spokes

The hub's IKE phase 1 proposal is incompatible with the spoke's proposal

Which statement accurately describes the IPsec tunnel topology in a hub-and-spoke VPN?

Spokes establish direct tunnels with each other for optimal performance

Each spoke establishes a tunnel with the hub, and the hub establishes tunnels with each spoke

Every device establishes a tunnel with every other device in the network

Only the hub initiates tunnel establishment to the spokes

Juniper NetworksCertified Professional, Security (JNCIP-SEC)

Domain 5Objective 1

Hub-And-Spoke VPNs JN0-637 Practice Questions (Page 3)

Part of the Advanced IPsec VPNs domain, which makes up ~20% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–12 in this domain), expect 1–2 from this objective — we provide 24 practice questions to prepare you well beyond it. (estimate)

24questions here

5free pages

7concepts

Questions 11–15

11foundation · easy
In a hub-and-spoke IPsec VPN architecture, what is the primary role of the hub device?
Select an answer first
12foundation · easy
In a hub-and-spoke VPN using OSPF, what is a common method to ensure that spoke routers do not form adjacencies with each other?
Select an answer first
13foundation · easy
During IPsec tunnel establishment in a hub-and-spoke VPN, what is the primary purpose of the IKE phase 1 negotiation?
Select an answer first
14foundation · easy
A spoke can establish an IPsec tunnel to the hub, but cannot reach a network behind another spoke. What is the most likely cause of this issue?
Select an answer first
15foundation · easy
Which statement accurately describes the IPsec tunnel topology in a hub-and-spoke VPN?
Select an answer first

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