View Full Juniper JN0-336 Exam Dumps and Practice Test Dumps

 

Question 101.

Which feature records applications used within sessions?

1. AppTrack
2. Route reflector
3. DHCP relay
4. VLAN tagging

Correct Answer: 1

Explanation:

AppTrack provides application-level visibility by recording information about applications associated with network sessions. This capability helps administrators understand which applications are consuming network resources and how application traffic is distributed across users or endpoints. Application tracking can support monitoring, reporting, troubleshooting, and security analysis. Route reflection belongs to routing protocols, DHCP relay forwards address-assignment requests, and VLAN tagging identifies Layer 2 segmentation. AppTrack therefore serves a visibility function rather than directly providing routing, address allocation, or VLAN operations. Its information can be particularly useful when investigating application usage across an SRX deployment.

Question 102.

What can authenticate users through a firewall interaction?

1. Route policy
2. User firewall authentication
3. Packet capture
4. Address translation

Correct Answer: 2

Explanation:

User firewall authentication allows an SRX device to associate network activity with authenticated users when traffic requires identity-based access control. Instead of relying only on source addresses, the firewall can use authenticated identity information when evaluating applicable security policies. This is useful when organizations need access decisions based on individual users or groups. Route policies determine forwarding behavior, packet capture provides diagnostic visibility, and address translation modifies network addressing. User authentication therefore adds an identity dimension to firewall enforcement and can support more granular access control in environments where multiple users share network infrastructure.

Question 103.

What can exclude selected traffic from SSL inspection?

1. Route filter
2. Address pool
3. SSL exclusion rule
4. Session timer

Correct Answer: 3

Explanation:

An SSL exclusion rule allows administrators to specify traffic that should bypass SSL inspection. Exclusions may be useful for applications or destinations that are incompatible with interception, require special handling, or should remain outside a particular inspection policy. The exact matching conditions depend on the configured SSL proxy framework and policy structure. Route filters influence routing, address pools provide translated addresses, and session timers govern connection duration. SSL exclusions should be designed carefully because bypassing inspection means that the excluded traffic does not receive the same visibility or security inspection provided to intercepted encrypted sessions.

Question 104.

Which deployment step establishes a trusted CA for inspection?

1. Create a route
2. Configure DNS
3. Enable IDP
4. Install CA certificate

Correct Answer: 4

Explanation:

Installing the appropriate CA certificate establishes the trust relationship required for SSL inspection environments. When an SRX device performs SSL interception, it may generate certificates dynamically for inspected destinations. Client systems must trust the certificate authority used by the firewall; otherwise, users may receive certificate warnings even when the inspection process is operating correctly. Routing, DNS configuration, and IDP activation serve different purposes. Proper CA deployment therefore forms an important part of preparing endpoints for trusted SSL inspection and helps ensure that intercepted HTTPS connections can be presented without unnecessary certificate trust errors.

Question 105.

Which security function examines web content categories?

1. Web filtering
2. Route leaking
3. Packet mirroring
4. Tunnel monitoring

Correct Answer: 1

Explanation:

Web filtering examines requested web destinations and can classify them according to configured categories or reputation information. Administrators can then apply actions such as permitting, blocking, or logging access based on organizational requirements. This function focuses on web-access control rather than routing or VPN monitoring. Route leaking concerns route exchange between routing contexts, packet mirroring duplicates traffic for analysis, and tunnel monitoring evaluates connectivity conditions. Web filtering is therefore the relevant security capability when an organization needs to control access according to website classifications and related content-security policies.

Question 106.

Which IDP object groups related attack signatures?

1. Security zone
2. Attack object
3. Address book
4. Service set

Correct Answer: 2

Explanation:

An IDP attack object groups related attack signatures into a logical collection that can be referenced by an intrusion-detection policy. Grouping signatures allows administrators to apply broader detection behavior without individually selecting every signature each time. The attack object can represent a particular threat category or collection of related detection patterns, depending on the available configuration. Security zones define trust boundaries, address books organize network objects, and service sets describe service-related matching. Attack objects therefore provide a structured way to organize intrusion-detection signatures for policy-based enforcement.

Question 107.

Which application characteristic helps identify UDP traffic?

1. Encryption certificate
2. User credential
3. Transport protocol
4. NAT address

Correct Answer: 3

Explanation:

The transport protocol is an important characteristic when identifying application traffic because applications can use TCP, UDP, or other transport mechanisms. Application identification can combine protocol characteristics with additional traffic attributes to determine the application associated with a session. UDP differs from TCP in its connectionless transport behavior and is commonly used by applications such as DNS, streaming, and real-time communication services. Certificates provide identity information for secure services, credentials identify users, and NAT addresses concern address translation. Transport-protocol information therefore contributes to distinguishing application traffic during security processing.

Question 108.

What controls matching conditions in a NAT rule-set?

1. Threat signature
2. Translation pool
3. NAT rule criteria
4. Certificate chain

Correct Answer: 4

Explanation:

NAT rule criteria determine which traffic matches a particular translation rule within a NAT rule-set. Depending on the NAT type and configuration, matching can involve source or destination addresses, zones, interfaces, applications, or other supported conditions. Once traffic matches the relevant rule, the configured translation behavior can be applied. Threat signatures belong to intrusion detection, translation pools provide address resources, and certificate chains support authentication or trust validation. Understanding NAT rule criteria is important because an incorrect match condition can cause expected traffic to bypass the intended translation rule or use an unintended mapping.

Question 109.

Which NAT behavior preserves a fixed translated source address?

1. Static source translation
2. Dynamic routing
3. Application inspection
4. Threat remediation

Correct Answer: 1

Explanation:

Static source translation provides a predictable relationship between an original source address and its translated address. This can be useful when an internal host or service needs to consistently appear externally as a particular address. Unlike dynamic translation, which can select addresses from configured resources, static mapping maintains a defined relationship. Dynamic routing selects forwarding paths, application inspection identifies traffic characteristics, and threat remediation responds to security events. Static source translation is therefore appropriate when predictable address representation is required for specific traffic flows or systems communicating across a NAT boundary.

Question 110.

Which routing context can isolate VPN routes?

1. Security screen
2. Routing instance
3. Web category
4. Attack signature

Correct Answer: 2

Explanation:

A routing instance provides a separate routing context that can be used to isolate routes and forwarding decisions from the main routing environment. In VPN designs, routing instances can help separate customer, tenant, or VPN-specific routing information and prevent unrelated routes from being mixed together. Security screens protect against network attacks, web categories classify destinations, and attack signatures support intrusion detection. Routing-instance separation is therefore useful when a deployment requires multiple independent routing domains on the same SRX platform or when VPN traffic must remain logically isolated.

Question 111.

What interface commonly terminates a route-based IPsec tunnel?

1. reth interface
2. lo0 interface
3. st0 interface
4. fxp0 interface

Correct Answer: 3

Explanation:

The st0 interface is commonly used as the secure tunnel interface for route-based IPsec VPNs on Junos devices. Routes can direct traffic toward the st0 interface, while IPsec provides encryption across the VPN tunnel. This model separates routing decisions from the physical interface carrying the encrypted packets and allows dynamic routing or static routes to operate across the tunnel. The reth interface is associated with redundant Ethernet interfaces, lo0 is a loopback interface, and fxp0 is commonly used for management-related connectivity. Correct st0 configuration is therefore central to route-based VPN operation.

Question 112.

Which IKE setting identifies the external interface used by a gateway?

1. Gateway address
2. Policy timeout
3. Detector profile
4. External interface

Correct Answer: 4

Explanation:

The external interface setting associates an IKE gateway with the interface through which VPN negotiation is expected to occur. This identifies the local network interface used for communication with the remote VPN peer. Correct gateway-interface configuration is important because IKE negotiation depends on reaching the peer through the appropriate path and interface. Gateway addresses identify peer endpoints, policy timeouts control policy timing, and detector profiles relate to security inspection. When troubleshooting an IKE gateway, verifying the external interface is useful because an incorrect interface association can prevent successful VPN negotiation.

Question 113.

What can detect VPN failure through active probes?

1. RPM monitoring
2. VLAN trunking
3. ARP inspection
4. Certificate renewal

Correct Answer: 1

Explanation:

RPM monitoring can use active probes to test reachability toward remote destinations and provide operational information about network availability. When applied to VPN-related paths, these probes can help detect connectivity failures that may not be immediately obvious from tunnel configuration alone. Administrators can use monitoring results to identify unreachable endpoints or degraded paths and can integrate the information with other operational mechanisms where supported. VLAN trunking handles Layer 2 connectivity, ARP inspection concerns address-resolution behavior, and certificate renewal maintains certificate validity. RPM therefore provides active network-path monitoring rather than configuration management.

Question 114.

What does a session limit restrict?

1. Certificate length
2. Concurrent connections
3. Route advertisements
4. DNS records

Correct Answer: 2

Explanation:

A session limit restricts the number of sessions that can be established or maintained according to the configured control. Session limits can help protect firewall resources from excessive connection creation and can be useful for managing resource consumption by particular traffic sources, users, or policies where supported. Certificate length affects cryptographic credentials, route advertisements concern routing protocols, and DNS records provide name-resolution information. Session controls are therefore relevant to capacity and connection management. Properly selected limits can help prevent excessive session consumption from affecting other legitimate traffic on the SRX device.

Question 115.

Which cluster component carries synchronized control information?

1. Fabric link
2. Web proxy
3. NAT pool
4. IDP object

Correct Answer: 3

Explanation:

The fabric link is used for communication and synchronization between nodes in an SRX chassis cluster. Clustered devices need internal communication mechanisms to coordinate state and maintain high availability. Depending on the cluster architecture and configuration, synchronization can include information required for maintaining consistent operational state between nodes. Web proxies handle application-layer traffic inspection, NAT pools provide translated addresses, and IDP objects organize intrusion-detection signatures. Understanding the role of the fabric connection is important when diagnosing cluster communication problems or investigating unexpected behavior during failover and state synchronization.

Question 116.

What influences which chassis-cluster node becomes primary?

1. DNS priority
2. Policy order
3. Redundancy-group priority
4. Application category

Correct Answer: 4

Explanation:

Redundancy-group priority is used as part of determining node preference within an SRX chassis cluster. The redundancy-group mechanism manages high-availability roles and helps determine which node is active for the relevant group under configured conditions. DNS priority influences name-resolution choices, policy order determines security-policy evaluation, and application categories classify traffic. Correct redundancy-group configuration is therefore important when administrators need predictable node roles and failover behavior. When investigating cluster elections or unexpected active-node changes, redundancy-group settings should be reviewed alongside node health, monitoring, and other configured high-availability parameters.

Question 117.

What can prevent repeated failover switching?

1. Preemptive routing
2. Session inspection
3. Failover stabilization
4. DNS caching

Correct Answer: 1

Explanation:

Failover stabilization mechanisms help prevent an HA system from repeatedly switching active roles when conditions fluctuate around a failure threshold. Excessive role changes, sometimes called flapping, can disrupt traffic and complicate recovery. Stabilization behavior allows the cluster to avoid immediately changing roles for every brief or transient condition, depending on the configured HA features. Routing controls, session inspection, and DNS caching serve different purposes. In an SRX chassis cluster, carefully configured failover behavior can improve operational stability by reducing unnecessary transitions while still allowing genuine node or link failures to trigger the required redundancy response.

Question 118.

Which cluster link helps monitor peer health?

1. Security policy
2. Control link
3. NAT interface
4. Web-filter profile

Correct Answer: 2

Explanation:

The control link provides communication between chassis-cluster nodes for control and health-related coordination. Reliable control communication is important because each node must maintain awareness of the peer’s status and coordinate high-availability operations. Problems affecting this communication path can contribute to cluster-state issues or unexpected failover behavior. Security policies govern traffic filtering, NAT interfaces participate in address translation paths, and web-filter profiles classify web requests. When troubleshooting cluster health, administrators should verify the status and connectivity of the control communication path along with other cluster links and node-health indicators.

Question 119.

What can monitor the operational health of a cluster node?

1. Node health monitoring
2. URL categorization
3. Address translation
4. IKE proposal

Correct Answer: 3

Explanation:

Node health monitoring evaluates operational conditions associated with an SRX chassis-cluster member. Health information helps the cluster determine whether a node remains capable of performing its assigned role and can contribute to decisions involving high availability and failover. URL categorization classifies websites, address translation changes packet addressing, and an IKE proposal defines cryptographic parameters for VPN negotiation. Monitoring node health is therefore a core high-availability function. Administrators investigating unexpected failover should review node health information together with redundancy-group status, control communication, fabric connectivity, and other cluster-state indicators.

Question 120.

Which diagnostic method follows individual packet processing?

1. Route summarization
2. Certificate enrollment
3. Application grouping
4. Flow trace

Correct Answer: 4

Explanation:

Flow trace provides detailed diagnostic visibility into packet and session processing within the SRX device. It can help administrators follow how traffic is handled as it moves through relevant processing stages, making it useful when ordinary counters or logs do not explain unexpected behavior. Flow tracing can assist with troubleshooting security policies, session creation, routing interactions, and other traffic-processing issues, depending on the selected configuration. Route summarization changes routing information, certificate enrollment handles trust credentials, and application grouping organizes application classifications. Flow trace is therefore a specialized diagnostic mechanism for investigating traffic-processing behavior.