In a Junos OS GRE tunnel configuration, what is the purpose of assigning an IP address to the tunnel interface (e.g., gr-0/0/0)?

To enable the tunnel to carry multicast traffic

To define the source address used in the outer IP header

To provide a local address for routing and to terminate the tunnel

To set the maximum transmission unit for the tunnel

What is the impact of GRE encapsulation on the size of a packet?

It changes the packet size depending on the payload protocol

It does not change the packet size

It reduces the packet size by compressing the payload

It increases the packet size by adding a GRE header and an outer IP header

When a GRE tunnel is used to transport an IPv6 packet over an IPv4 network, what happens to the original IPv6 packet?

It is fragmented into smaller pieces and each piece is sent separately

It is discarded and replaced with an IPv4 packet

It is encapsulated as the payload of a new IPv4 packet

It is encrypted and then encapsulated in an IPv4 packet

A network engineer is configuring a GRE tunnel on a Junos device. The tunnel source is a loopback interface, and the tunnel destination is a remote router's loopback. What is the purpose of using loopback interfaces as tunnel endpoints?

Loopback interfaces automatically route traffic into the tunnel.

Loopback interfaces provide higher bandwidth for the tunnel.

Loopback interfaces are always up, providing stability for the tunnel.

Loopback interfaces are required for GRE tunnels.

Juniper NetworksCertified Specialist, Enterprise Routing and Switching (JNCIS-ENT)

Domain 8Objective 2

Generic Routing Encapsulation JN0-352 Practice Questions (Page 1)

Part of the Tunnels domain, which makes up ~7% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~2–4 in this domain), expect 1–1 from this objective — we provide 17 practice questions to prepare you well beyond it. (estimate)

17questions here

4free pages

6concepts

Questions 1–5

1foundation · easy
In a standard GRE header, which field is optional and used to identify a specific traffic flow within a tunnel?
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2foundation · easy
In a Junos OS GRE tunnel configuration, what is the purpose of assigning an IP address to the tunnel interface (e.g., gr-0/0/0)?
Select an answer first
3foundation · easy
What is the impact of GRE encapsulation on the size of a packet?
Select an answer first
4foundation · easy
When a GRE tunnel is used to transport an IPv6 packet over an IPv4 network, what happens to the original IPv6 packet?
Select an answer first
5application · medium
A network engineer is configuring a GRE tunnel on a Junos device. The tunnel source is a loopback interface, and the tunnel destination is a remote router's loopback. What is the purpose of using loopback interfaces as tunnel endpoints?
Select an answer first

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