Free Juniper JN0-636 Exam Actual Questions & Explanations

Last updated on: Jun 2, 2026

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Question No. 1

Exhibit

You are using traceoptions to verify NAT session information on your SRX Series device. Referring to the exhibit, which two statements are correct? (Choose two.)

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Correct Answer: B, C

The SRX Series device is performing both source and destination NAT on this session because the traceoptions output shows that both source and destination IP addresses and ports are translated. The source IP address 192.168.5.2 is translated to 192.168.100.1 and the destination IP address 1.1.1.1 is translated to 192.168.5.1. The source port 0 is translated to 14777 and the destination port 80 is translated to 80. The traceoptions output also shows the rule and pool IDs for both source and destination NAT: 2/32770 and 1/1 respectively.

This is the first packet in the session because the traceoptions output shows the flag flow_first_packet, which indicates that this is the first packet of a new session. The traceoptions output also shows the flag flow_first_src_xlate and flow_first_rule_dst_xlate, which indicate that this is the first time that source and destination NAT are applied to this session.


traceoptions (Security NAT) | Junos OS | Juniper Networks

[SRX] How to interpret Flow TraceOptions output for NAT troubleshooting

Question No. 2

Exhibit

Referring to the exhibit, which three protocols will be allowed on the ge-0/0/5.0 interface? (Choose three.)

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Correct Answer: B, D, E

The exhibit shows the output of the 'show interfaces ge-0/0/5.0 extensive' command on an SRX Series device. The output includes a section called 'Security' that lists the protocols that are allowed on the ge-0/0/5.0 interface. The protocols that are allowed on the ge-0/0/5.0 interface are:

OSPF

DHCP

NTP

It's important to notice that the output don't have IBGP, IPsec, so these protocols are not allowed on the ge-0/0/5.0 interface.


Question No. 3

Your company wants to use the Juniper Seclntel feeds to block access to known command and control servers, but they do not want to use Security Director to manage the feeds.

Which two Juniper devices work in this situation? (Choose two)

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Correct Answer: B, C

Juniper MX and SRX series devices support the integration of Seclntel feeds, which provide information about known command and control servers, for the purpose of blocking access to them. These devices can be configured to use the Seclntel feeds without the need for Security Director to manage the feeds.

EX series and QFX series devices are not capable of working in this situation, as they do not support the integration of Seclntel feeds.

According to the Juniper documentation, the two Juniper devices that work in this situation are MX Series devices and SRX Series devices. These devices can use the Juniper SecIntel feeds to block access to known command and control servers without using Security Director to manage the feeds. The Juniper SecIntel feeds are curated and verified threat intelligence data that are continuously collected from Juniper ATP Cloud, Juniper Threat Labs, and other sources.The SecIntel feeds include command and control IPs, URLs, certificate hashes, and domains that are used by attackers to control malware or maintain their connection to the network1.

The MX Series devices and the SRX Series devices can subscribe to the SecIntel feeds by using the following steps:

Configure the SecIntel service on the device by specifying the SecIntel URL, the SecIntel policy, and the SecIntel license2.

Configure the SecIntel policy on the device by specifying the SecIntel feeds, the SecIntel actions, and the SecIntel logging3.

Apply the SecIntel policy to the security zones or the firewall policies on the device by using thesecintel-policyoption4.

Once the SecIntel service is configured and applied, the MX Series devices and the SRX Series devices will receive the SecIntel feeds from Juniper ATP Cloud and use them to block the traffic from or to the command and control servers. The SecIntel service will also send the SecIntel logs to Juniper ATP Cloud or a third-party SIEM solution for further analysis and reporting.

The following devices are not suitable or incorrect for this situation:

EX Series devices: EX Series devices are Ethernet switches that can integrate with SecIntel to block infected hosts at the switch port. However, they cannot use the SecIntel feeds to block command and control servers, as they do not support the SecIntel service or policy.

QFX Series devices: QFX Series devices are Ethernet switches that can integrate with SecIntel to block infected hosts at the switch port. However, they cannot use the SecIntel feeds to block command and control servers, as they do not support the SecIntel service or policy.


Question No. 4

Exhibit.

A hub member of an ADVPN is not functioning correctly.

Referring the exhibit, which action should you take to solve the problem?

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Correct Answer: B

Question No. 5

In an effort to reduce client-server latency transparent mode was enabled an SRX series device.

Which two types of traffic will be permitted in this scenario? (Choose Two )

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Correct Answer: A, B

To answer this question, you need to know what transparent mode is and what types of traffic it permits. Transparent mode is a mode of operation for SRX Series devices that provides Layer 2 bridging capabilities with full security services. In transparent mode, the SRX Series device acts as a bridge between two network segments and inspects the packets without modifying the source or destination information in the IP packet header.The SRX Series device does not have an IP address in transparent mode, except for the management interface1. Therefore, the types of traffic that will be permitted in transparent mode are:

A) ARP (Address Resolution Protocol) traffic. ARP is a protocol that maps IP addresses to MAC addresses. ARP traffic is a type of Layer 2 traffic that does not require an IP address on the SRX Series device.ARP traffic is permitted in transparent mode to allow the SRX Series device to learn the MAC addresses of the hosts on the bridged network segments2.

B) Layer 2 non-IP multicast traffic. Layer 2 non-IP multicast traffic is a type of traffic that uses MAC addresses to send data to multiple destinations. Layer 2 non-IP multicast traffic does not require an IP address on the SRX Series device.Layer 2 non-IP multicast traffic is permitted in transparent mode to allow the SRX Series device to forward data to the appropriate destinations on the bridged network segments3.

The other options are incorrect because:

C) BGP (Border Gateway Protocol) traffic. BGP is a protocol that exchanges routing information between autonomous systems. BGP traffic is a type of Layer 3 traffic that requires an IP address on the SRX Series device.BGP traffic is not permitted in transparent mode, because the SRX Series device does not have an IP address in transparent mode, except for the management interface1.

D) IPsec (Internet Protocol Security) traffic. IPsec is a protocol that provides security and encryption for IP packets. IPsec traffic is a type of Layer 3 traffic that requires an IP address on the SRX Series device.IPsec traffic is not permitted in transparent mode, because the SRX Series device does not have an IP address in transparent mode, except for the management interface1.


Transparent Mode Overview

ARP Support in Transparent Mode

Layer 2 Non-IP Multicast Traffic Support in Transparent Mode