Juniper Exam JN0-335 Topic 6 Question 37 Discussion

Actual exam question for Juniper's JN0-335 exam

Question #: 37
Topic #: 6

Which sequence does an SRX Series device use when implementing stateful session security policies using Layer 3 routes?

AAn SRX Series device will perform a security policy search before conducting a longest-match Layer 3 route table lookup.

BAn SRX Series device performs a security policy search before implementing an ALG security check on the longest-match Layer 3 route.

CAn SRX Series device will conduct a longest-match Layer 3 route table lookup before performing a security policy search.

DAn SRX Series device conducts an ALG security check on the longest-match route before performing a security policy search.

Show Suggested Answer

Suggested Answer: C

The sequence that an SRX Series device uses when implementing stateful session security policies using Layer 3 routes is:

An SRX Series device will conduct a longest-match Layer 3 route table lookup before performing a security policy search: When an SRX Series device receives a packet, it first looks up the destination IP address in the routing table and finds the longest matching route to forward the packet. Then, it performs a security policy search based on the source zone, destination zone, source address, destination address, protocol, and application of the packet. If there is a matching policy that allows the packet, it creates or updates a session entry for the packet and applies any security services configured in the policy.

by Bettina at Sep 17, 2024, 02:19 PM

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Carlota

8 months ago

Hey, at least they didn't ask about the 'Jedi Master' of routing protocols. That would have really scrambled my brain!

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Tamar

7 months ago

D) An SRX Series device conducts an ALG security check on the longest-match route before performing a security policy search.

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Thurman

7 months ago

I always get confused with the order of operations on SRX devices.

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Norah

7 months ago

C) An SRX Series device will conduct a longest-match Layer 3 route table lookup before performing a security policy search.

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Genevive

7 months ago

A) An SRX Series device will perform a security policy search before conducting a longest-match Layer 3 route table lookup.

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Lina

8 months ago

B seems like a good option, but I'm a bit confused. Isn't an ALG usually associated with application-layer protocols?

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Mitsue

8 months ago

I'm going with D. The ALG check sounds like a crucial step before the security policy search.

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Arminda

7 months ago

I'm not sure, but it seems like D is the logical sequence for the SRX Series device.

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Bette

8 months ago

Yeah, I agree. It makes sense to check for ALG security before moving on to the security policy search.

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Brittney

8 months ago

I think D is the correct answer too. The ALG security check seems important.

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Mozelle

8 months ago

Hmm, that's interesting. I wonder which one is the correct sequence for stateful session security policies.

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Honey

9 months ago

I disagree, I believe the device will conduct a longest-match Layer 3 route table lookup before performing a security policy search.

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Maile

9 months ago

C is the correct answer. The device needs to look up the route before applying any security policies.

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Matt

8 months ago

Definitely. It's all about following the correct sequence to maintain effective stateful session security policies.

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Arminda

8 months ago

Yes, you're right. The SRX Series device will conduct a longest-match Layer 3 route table lookup before performing a security policy search.

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Cyndy

8 months ago

That makes sense. It's important for the device to check the route first to ensure proper security measures are in place.

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Kris

8 months ago

I think C is the correct answer. The device needs to look up the route before applying any security policies.

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Mozelle

9 months ago

I think the SRX Series device will perform a security policy search before conducting a longest-match Layer 3 route table lookup.

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Sharee

9 months ago

Option A makes the most sense to me. It's logical to check the security policy first before routing the traffic.

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Vallie

8 months ago

Yes, it's important to prioritize security measures before routing traffic to prevent any unauthorized access.

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Virgie

8 months ago

I agree, checking the security policy first ensures that only allowed traffic is routed.

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