QUESTION: 41

How does an SRX Series device examine exception traffic?

The device examines the host-inbound traffic for the ingress interface and zone.
The device examines the host-outbound traffic for the ingress interface and zone.
The device examines the host-inbound traffic for the egress interface and zone.
The device examines the host-outbound traffic for the egress interface and zone.

Answer(s): A

Explanation:

Exception traffic, including management and control plane traffic, is handled by examining host- inbound traffic configurations at the ingress interface and zone. It ensures traffic reaches necessary services like SSH and IKE securely. See Juniper Host Inbound Traffic Documentation for more.

SRX Series devices handle exception traffic (such as management traffic like SSH, Telnet, DNS queries, etc.) differently than regular transit traffic. Exception traffic is examined based on host-inbound traffic for the ingress interface and zone. If traffic is destined for the device itself (e.g., management traffic or routing protocol messages), it must be allowed as host-inbound traffic on both the ingress interface and zone.
Example Command:
bash set security zones security-zone trust host-inbound-traffic system-services ssh This ensures that traffic destined to the SRX device is inspected based on the ingress interface and zone.

Reference:

Juniper documentation on host-inbound traffic and exception handling.

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QUESTION: 42

Exhibit:

Referring to the exhibit, a default static route on SRX-1 sends all traffic to ISP-

You have configured APBR to send all requests for streaming video traffic to ISP-B. However, the return traffic from the streaming video server is coming through ISP-A, and the traffic is being dropped by SRX-1. You can only make changes on SRX-1.
How do you solve this problem?
Place both ISP-facing interfaces in the same zone.
Change the APBR routing instance from a forwarding instance to a virtual router instance.
Enable AppTrack to keep track of the sessions and zones for the streaming video traffic.
Configure BGP to control the return path of the streaming video traffic.

Answer(s): D

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QUESTION: 43

You are configuring an interconnect logical system that is configured as a VPLS switch to allow two logical systems to communicate.
Which two parameters are required when configuring the logical tunnel interfaces? (Choose two.)

Encapsulation ethernet must be used.
The virtual tunnel interfaces should only be configured with two logical unit pairs per logical system interconnect.
The logical tunnel interfaces should be configured with two logical unit pairs per logical system interconnect.
Encapsulation ethernet-vpls must be used.

Answer(s): C,D

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QUESTION: 44

Exhibit:

You have configured a CoS-based VPN that is not functioning correctly. Referring to the exhibit, which action will solve the problem?

You must delete one forwarding class.
You must change the loss priorities of the forwarding classes to low.
You must use inet precedence instead of DSCP.
You must change the code point for the DB-data forwarding class to 10000.

Answer(s): A

Explanation:

In the exhibit, the CoS-based VPN configuration is not functioning correctly due to an issue with the number of forwarding classes. The maximum number of forwarding classes supported for CoS-based VPNs with multiple SAs (security associations) is typically four forwarding classes. In this case, more than four forwarding classes are defined.
To solve the issue, one forwarding class must be deleted to ensure that the total number of forwarding classes is reduced to four or fewer.

Reference:

Juniper CoS-based VPNs and forwarding class limitations.

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Free JN0-637 Exam Braindumps (page: 11)

QUESTION: 41

Explanation:

Reference:

QUESTION: 42

QUESTION: 43

QUESTION: 44

Explanation:

Reference: