Free Juniper JN0-336 Practice Exam with Questions & Answers

The correct answers are A and B. In an SRX chassis cluster, the cluster ID identifies the chassis cluster itself, while the node ID identifies the individual SRX device inside that two-node cluster. Juniper states that a cluster is identified by a cluster-id value from 1 through 255, and that setting the cluster ID to 0 is equivalent to disabling clustering. Therefore, option A is correct and option C is wrong.

Option B is also correct because Juniper states that a cluster node is identified by a node ID specified as a number from 0 through 1. A normal SRX chassis cluster has two nodes: node0 and node1. The two devices must use the same nonzero cluster ID so they belong to the same cluster, but each device must use a different node ID so Junos can apply node-specific configuration, interface numbering, redundancy-group ownership, and management settings correctly. Option D is wrong because node IDs do not range from 1 through 255; that range applies to cluster IDs, not node IDs. Reference topics: HA Clustering, cluster ID, node ID, chassis cluster formation, node0/node1 identification.

The correct answers are C and D. Once the SSL proxy profile already exists, the SRX still needs a security policy that matches the SSL/TLS traffic and applies the SSL proxy profile as an application service. Juniper’s SSL proxy configuration procedure explicitly shows creating the security policy match criteria and then applying the SSL proxy profile with then permit application-services ssl-proxy profile-name. It also states that SSL forward and reverse proxy require the profile to be configured at the firewall rule level.

Option D is correct because SSL proxy is not an end goal by itself; it decrypts SSL/TLS traffic so Layer 7 security services can inspect it. Juniper states that decrypted SSL traffic is available for security services and provides examples where the SSL proxy profile and a Content Security/UTM policy are both attached to the same security policy. Option A is wrong because host-inbound-traffic HTTPS controls HTTPS access to the SRX itself, not transit SSL proxy inspection. Option B is wrong because SSL proxy profiles are not referenced under a security zone for this function; they are applied under the matching security policy. Reference topics: SSL Proxy, SSL proxy profile, security policy application-services, Layer 7 inspection, UTM/IDP/ATP integration.

The correct answer is A. by granting access based on user roles or identities. Juniper identity-aware firewall moves enforcement beyond simple IP-address-based policy by associating traffic with authenticated users, groups, devices, and roles. Juniper states that identity parameters can be used to configure security policies so that policies provide the appropriate level of access to authenticated users. It further explains that identity helps secure access to resources based on username, roles, and groups, and that firewalls can create and enforce rules based on user identity rather than only an IP address.

This directly supports compliance because regulated environments usually require least-privilege access, auditable user-based control, and role-based authorization. Option B is wrong because identity-aware security might simplify policy operations in some cases, but network architecture simplification is not its compliance function. Option C is wrong because capacity expansion has no direct relationship to identity-based regulatory enforcement. Option D is too vague and not the mechanism being tested; confidentiality is a security goal, but identity-aware firewall enforces access decisions by mapping traffic to users and groups. Reference topics: Identity-Aware Security Policies, user identity, role-based access control, group-based policy enforcement, authentication table.

The correct answers are A and B. In SRX chassis clustering, the fabric link, represented by fab interfaces, is the data-plane connection between the two cluster nodes. Juniper describes the fabric as the back-to-back data connection used when traffic on one node must be processed on the other node or must exit through an interface on the other node; session-state information also passes over the fabric. This is especially visible in active/active clustering, where ingress and egress interfaces can reside on different nodes and transit traffic must cross the fabric link.

Option B is also correct because the fabric link still exists in active/passive clustering for cluster data-plane synchronization and inter-node state handling, even though active/passive designs minimize fabric transit traffic because only one node normally forwards traffic at a time. Juniper specifically states that active/passive mode minimizes traffic over the fabric link, not that the fabric link is unused.

Options C and D are not the intended answers. The cluster is identified by a configured cluster ID, and each chassis is identified by a node ID, but the fabric interface names themselves are not where the cluster ID is reflected. Reference topics: HA Clustering, fabric link, active/active clustering, active/passive clustering, session synchronization, inter-node traffic.

The correct answer is C. device policy rules. In Junos Space Security Director, a firewall rule that must apply uniquely to one SRX Series device belongs in the device-specific policy layer, not in global or group-level policy. Juniper’s Security Director documentation states that a device can have a device-specific policy and can also be part of multiple group policies; the rule processing order places policies applied before device-specific policies first, then device-specific policies, then policies applied after device-specific policies. Juniper also explains that rules applied before device-specific policies take priority and cannot be overridden, while rules applied after device-specific policies can be overridden by adding a rule in the device-specific policy.

Option A is wrong because all-devices prerules are global mandatory rules applied before device-specific policy, not unique device exceptions. Option B is wrong because group policy prerules apply to a group of devices, not one specific SRX. Option D is wrong because all-devices postrules are still global policy rules, although they can be overridden. For a unique policy requirement on one SRX device, device policy rules are the precise Security Director construct. Reference topics: Security Director, firewall policies, device-specific policies, policy rule precedence, global/group/device rule hierarchy.

The correct answers are A and B. The exhibit shows show chassis cluster statistics. Under Control link statistics, Control link 0 has heartbeat packets sent and received, with heartbeat packet errors: 0. That is the clearest indication that the control link is operating normally. Juniper describes chassis-cluster control-plane verification as checking control-link heartbeat packets sent and received, along with heartbeat errors. If both send and receive counters are incrementing and errors are zero, the control link is functioning.

Option A is also correct because under Fabric link statistics, Child link 0 shows probes sent and probes received. Juniper uses fabric-link probe counters to verify fabric-link operation; nonzero sent and received probe counters indicate that the link is participating in fabric monitoring. Option C is not the safest conclusion from this exhibit alone. Child link 1 shows zero probes sent and received, but the output does not prove that a second fabric child link is configured and failing; it could simply be unused or not configured in this deployment. Option D is directly contradicted by the healthy heartbeat counters. Reference topics: HA Clustering, chassis cluster statistics, control-link heartbeat, fabric-link probes, cluster health verification.

The correct answers are C and D. Juniper Secure Connect is Juniper’s remote-access VPN client for SRX Series Firewalls. Juniper describes it as a flexible SSL VPN and IPsec application that gives remote workers secure access to corporate and cloud-protected resources. That directly supports option D, because SSL VPN provides a connection method that is useful when traditional IPsec ports are restricted or blocked. Juniper’s Secure Connect guide also states that enabling SSL VPN gives the client flexibility in connecting to SRX Series Firewalls and that SSL VPN is enabled by default.

Option C is also correct because Juniper Secure Connect supports external authentication, allowing users to authenticate with enterprise identity systems rather than relying only on local firewall credentials. Juniper’s external authentication procedure notes that this method lets users use the same username and password as their domain login and is recommended for authenticating users.

Option A is not the best answer because having a client application is not the specific connection/authentication flexibility being tested. Option B is wrong because Kerberos is not the stated Secure Connect authentication method in this context. Reference topics: Juniper Secure Connect, remote-access VPN, SSL VPN, IPsec, external authentication.

The correct answer is A. It supports a maximum of two domains. Juniper’s Active Directory identity-source configuration guidance states that an SRX Series Firewall using the integrated user firewall/Active Directory identity source can be configured for a maximum of two domains. That is the exact limit relevant to this question. The same Juniper configuration page separately states that a maximum of 10 domain controllers can be configured, which directly eliminates option C because the supported figure is not 20 Active Directory servers per domain.

Option B is wrong because Active Directory identity source is not presented as a logical-systems feature in the JNCIS-SEC identity-aware firewall context. Option D is wrong because the primary Active Directory mechanism reads Windows domain controller event logs and uses WMI/DCOM plus LDAP to build IP-to-user and group mappings. Juniper describes the SRX as reading and monitoring the Windows event log on the domain controller, then using LDAP to obtain user/group information. Non-domain or non-Windows cases typically require alternate authentication behavior such as captive portal, not native Active Directory event-log tracking.

Reference topics: Identity-Aware Security Policies, Active Directory identity source, integrated user firewall, domain limits, domain controllers, WMIC, LDAP mapping.

The correct answers are B and D. In Junos SSL proxy terminology, client protection maps to SSL forward proxy. In a forward-proxy deployment, the SRX sits between internal clients and external SSL/TLS servers. The firewall intercepts the server certificate, generates a substitute certificate, signs it with the configured root CA, decrypts the SSL session for inspection, and then re-encrypts traffic toward the destination server. Juniper’s SSL proxy configuration table shows that a forward-proxy profile uses root-ca configured = Yes and server-certificate configured = No. It also states that configuring neither certificate type fails commit validation, while configuring both root-ca and server-certificate in the same profile is unsupported.

Option A is wrong because a server certificate is required for reverse proxy/server protection, not for client-protection forward proxy. Option C is wrong because without a trusted root CA, client browsers would not trust the certificates generated by the SRX during interception. Juniper separately notes that the root CA certificate is required for client browsers to trust certificates signed by the firewall. Reference topics: SSL Proxy, client protection, SSL forward proxy, root CA, server protection, SSL reverse proxy.

The correct answers are C and D. The cSRX is Juniper’s containerized SRX firewall, intended for lightweight virtual and container environments where rapid deployment and high density matter. Juniper’s cSRX documentation lists supported security capabilities including basic firewall policy, NAT, Intrusion Detection and Prevention, content security/UTM functions, ATP Cloud, SSL Proxy, AppID, AppFW, and AppTrack. That supports option C, because cSRX provides SRX security services in a containerized footprint rather than requiring a full VM-based firewall appliance.

Option D is also correct because Juniper identifies the cSRX’s small footprint and minimum resource reservation requirements as key benefits; it is designed to scale more densely than VM-based firewall options. Juniper’s Day One cSRX guide specifically identifies faster deployment, a small footprint, and reduced resource consumption as major benefits. Option A is not the best answer for this exam item because the question asks for cSRX deployment benefits, not merely forwarding-mode support. Option B is wrong because the tested cSRX advantage is not a default three-zone configuration. Reference topics: cSRX container firewall, virtual SRX deployment, firewall/NAT/IPS/UTM services, lightweight resource footprint.