{"id":25122,"date":"2026-09-30T12:16:39","date_gmt":"2026-09-30T12:16:39","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=25122"},"modified":"2026-09-30T12:16:39","modified_gmt":"2026-09-30T12:16:39","slug":"juniper-jn0-336-practice-test-questions-and-exam-dumps-part12-q221-240","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/juniper-jn0-336-practice-test-questions-and-exam-dumps-part12-q221-240\/","title":{"rendered":"Juniper JN0-336 Practice Test Questions and Exam Dumps Part12 Q221-240"},"content":{"rendered":"

View Full <\/b>Juniper JN0-336 Exam Dumps<\/b><\/a> and Practice Test Dumps<\/b><\/h2>\n

 <\/p>\n

Question 221.<\/b><\/h3>\n

What does Junos application identification timeout control?<\/b><\/p>\n

    \n
  1. Application cache duration<\/span><\/li>\n
  2. Route advertisement period<\/span><\/li>\n
  3. Certificate renewal interval<\/span><\/li>\n
  4. Cluster election timer<\/span><\/li>\n<\/ol>\n

    Correct Answer: 1<\/b><\/p>\n

    Explanation:<\/b><\/p>\n

    Application identification timeout controls how long identified application information remains valid for reuse. This behavior is important because application characteristics can change, and previously learned identification information should not remain applicable indefinitely. Appropriate timeout behavior helps Junos maintain accurate application classification while avoiding unnecessary repeated processing. The setting is related specifically to application identification rather than routing advertisements, certificate renewal, or chassis cluster elections. When troubleshooting inconsistent application recognition, administrators can examine identification behavior and relevant timeout settings to determine whether cached application information is being retained longer or shorter than expected for the traffic being inspected.<\/span><\/p>\n

    Question 222.<\/b><\/h3>\n

    Which feature can group applications for policy matching?<\/b><\/p>\n

      \n
    1. Security log stream<\/span><\/li>\n
    2. Application set<\/span><\/li>\n
    3. Route reflector<\/span><\/li>\n
    4. Interface profile<\/span><\/li>\n<\/ol>\n

      Correct Answer: 2<\/b><\/p>\n

      Explanation:<\/b><\/p>\n

      An application set groups multiple application definitions so they can be referenced collectively in appropriate security policy configurations. This simplifies rule administration when several applications require similar treatment. Instead of repeatedly specifying individual applications, an administrator can use a logical collection that represents the desired application group. Application sets are therefore useful for organizing policy conditions around application behavior. Security log streams handle logging, route reflectors support routing architectures, and interface profiles address interface configuration. Proper application grouping can make rulebases easier to maintain while preserving application-aware control over traffic.<\/span><\/p>\n

      Question 223.<\/b><\/h3>\n

      Which ALG can assist with H.323 signaling traffic?<\/b><\/p>\n

        \n
      1. FTP ALG<\/span><\/li>\n
      2. SIP ALG<\/span><\/li>\n
      3. H.323 ALG<\/span><\/li>\n
      4. DNS proxy<\/span><\/li>\n<\/ol>\n

        Correct Answer: 3<\/b><\/p>\n

        Explanation:<\/b><\/p>\n

        The H.323 ALG is designed to understand H.323 signaling and related connection behavior. H.323 is associated with multimedia communications and can involve signaling information that helps establish additional communication channels. Application layer gateway processing allows the security device to interpret protocol-specific information rather than handling every connection as unrelated generic traffic. FTP ALG is designed for FTP, SIP ALG handles Session Initiation Protocol traffic, and DNS proxy functionality supports name-resolution requests. When troubleshooting H.323 communication across a security gateway, administrators should consider both signaling and dynamically established media connections.<\/span><\/p>\n

        Question 224.<\/b><\/h3>\n

        Which ALG is associated with Real-Time Streaming Protocol traffic?<\/b><\/p>\n

          \n
        1. LDAP ALG<\/span><\/li>\n
        2. SMTP ALG<\/span><\/li>\n
        3. RDP ALG<\/span><\/li>\n
        4. RTSP ALG<\/span><\/li>\n<\/ol>\n

          Correct Answer: 4<\/b><\/p>\n

          Explanation:<\/b><\/p>\n

          The RTSP ALG is associated with Real-Time Streaming Protocol traffic and can provide protocol-aware handling for streaming sessions. RTSP is commonly used to control multimedia streams, and its signaling may contain information relevant to associated media connections. Application layer gateway support can therefore help the security device process protocol-specific traffic more appropriately. LDAP, SMTP, and RDP represent different application protocols and are not the intended function of an RTSP ALG. When investigating streaming problems through a security gateway, administrators should examine the relevant application identification, security policy, and protocol-aware handling together.<\/span><\/p>\n

          Question 225.<\/b><\/h3>\n

          What does a logical interface unit represent?<\/b><\/p>\n

            \n
          1. Physical cable type<\/span><\/li>\n
          2. Configured interface subdivision<\/span><\/li>\n
          3. Routing policy action<\/span><\/li>\n
          4. Security signature level<\/span><\/li>\n<\/ol>\n

            Correct Answer: 2<\/b><\/p>\n

            Explanation:<\/b><\/p>\n

            A logical interface unit represents a configured logical subdivision associated with a physical or logical interface. Junos uses interface units to provide separate logical configurations, such as addressing, protocol settings, or other interface-specific parameters. This structure allows one physical interface to support multiple logical configurations when the platform and interface type permit it. A logical unit is not a cable specification, routing policy action, or security signature level. Understanding interface-unit configuration is useful when troubleshooting address assignment, VLAN connectivity, routing adjacency, and security-zone relationships involving interfaces with multiple logical units.<\/span><\/p>\n

            Question 226.<\/b><\/h3>\n

            What does a redundant Ethernet interface provide in a chassis cluster?<\/b><\/p>\n

              \n
            1. Combined node connectivity<\/span><\/li>\n
            2. DNS query inspection<\/span><\/li>\n
            3. Application categorization<\/span><\/li>\n
            4. Certificate validation<\/span><\/li>\n<\/ol>\n

              Correct Answer: 1<\/b><\/p>\n

              Explanation:<\/b><\/p>\n

              A redundant Ethernet interface, commonly referred to as a reth interface in a chassis cluster, provides a logical interface whose traffic can be handled through the clustered nodes. It supports high-availability designs by associating logical connectivity with redundancy-group behavior rather than tying the service entirely to one physical node interface. This allows traffic to continue through the surviving node when appropriate failover conditions occur. DNS inspection, application categorization, and certificate validation are separate security functions. Correct reth configuration is important when designing resilient data-plane connectivity across clustered SRX devices.<\/span><\/p>\n

              Question 227.<\/b><\/h3>\n

              What can trigger reth failover behavior?<\/b><\/p>\n

                \n
              1. URL category change<\/span><\/li>\n
              2. Application timeout<\/span><\/li>\n
              3. Monitored interface failure<\/span><\/li>\n
              4. DNS cache expiration<\/span><\/li>\n<\/ol>\n

                Correct Answer: 3<\/b><\/p>\n

                Explanation:<\/b><\/p>\n

                A monitored interface failure can contribute to reth or redundancy-group failover behavior when the relevant chassis cluster configuration is designed to respond to that condition. Interface monitoring provides the cluster with information about whether important network connectivity remains available. If a monitored interface becomes unavailable and configured conditions are met, the redundancy mechanism can move traffic handling to another node. URL categories, application timeouts, and DNS cache expiration do not normally determine physical redundancy failover. Administrators should review interface monitoring settings and redundancy-group behavior together when diagnosing unexpected node transitions or traffic movement.<\/span><\/p>\n

                Question 228.<\/b><\/h3>\n

                Which command concept helps verify a commit without activating changes?<\/b><\/p>\n

                  \n
                1. Commit check<\/span><\/li>\n
                2. Commit synchronize<\/span><\/li>\n
                3. Commit confirmed<\/span><\/li>\n
                4. Rescue configuration<\/span><\/li>\n<\/ol>\n

                  Correct Answer: 1<\/b><\/p>\n

                  Explanation:<\/b><\/p>\n

                  A commit check validates the configuration for syntax and structural consistency without actually activating the candidate configuration. This provides a useful safety step before performing a normal commit, especially after making multiple related changes. It can identify configuration problems that would prevent successful activation. Commit synchronize serves a different purpose on supported clustered or multi-routing-engine configurations, while commit confirmed provides temporary activation with automatic rollback if not confirmed. A rescue configuration stores a known-good configuration for recovery. Understanding these commit mechanisms helps administrators choose the appropriate validation and recovery method.<\/span><\/p>\n

                  Question 229.<\/b><\/h3>\n

                  What does commit confirmed help prevent?<\/b><\/p>\n

                    \n
                  1. DNS poisoning<\/span><\/li>\n
                  2. Permanent lockout<\/span><\/li>\n
                  3. Packet fragmentation<\/span><\/li>\n
                  4. Application misclassification<\/span><\/li>\n<\/ol>\n

                    Correct Answer: 2<\/b><\/p>\n

                    Explanation:<\/b><\/p>\n

                    Commit confirmed is designed to reduce the risk of becoming permanently disconnected after a configuration change, particularly when making remote management changes. The new configuration is activated temporarily and must be confirmed within the specified period. If confirmation does not occur, Junos can automatically roll back to the previous committed configuration. This provides a recovery mechanism when a change unintentionally disrupts management access. DNS poisoning, packet fragmentation, and application misclassification are unrelated problems. Remote administrators should consider commit confirmed when making changes that could potentially affect routing, interfaces, firewall policies, or management connectivity.<\/span><\/p>\n

                    Question 230.<\/b><\/h3>\n

                    What is a rescue configuration intended to provide?<\/b><\/p>\n

                      \n
                    1. Known-good recovery baseline<\/span><\/li>\n
                    2. Current session statistics<\/span><\/li>\n
                    3. Dynamic application cache<\/span><\/li>\n
                    4. Remote authentication token<\/span><\/li>\n<\/ol>\n

                      Correct Answer: 1<\/b><\/p>\n

                      Explanation:<\/b><\/p>\n

                      A rescue configuration provides a saved configuration baseline that can be used for recovery when the active configuration becomes unusable or problematic. Administrators can establish a known-good configuration and preserve it so that recovery is possible after an unsuccessful change or configuration error. The rescue configuration is therefore a configuration-recovery mechanism rather than a source of live session statistics, application cache information, or authentication tokens. Maintaining an appropriate rescue configuration is particularly useful on remotely managed devices because it provides an additional recovery option when ordinary configuration correction becomes difficult.<\/span><\/p>\n

                      Question 231.<\/b><\/h3>\n

                      Which mechanism can preserve configuration copies automatically?<\/b><\/p>\n

                        \n
                      1. Packet capture<\/span><\/li>\n
                      2. Configuration archival<\/span><\/li>\n
                      3. Session mirroring<\/span><\/li>\n
                      4. Application tracking<\/span><\/li>\n<\/ol>\n

                        Correct Answer: 2<\/b><\/p>\n

                        Explanation:<\/b><\/p>\n

                        Configuration archival provides a mechanism for preserving copies of device configurations over time. Archived configurations can support auditing, troubleshooting, and recovery by allowing administrators to review previous configuration states. This is particularly useful when investigating when a change occurred or determining which configuration version preceded a problem. Packet capture records network traffic, session mirroring duplicates session information for analysis, and application tracking provides application-related visibility. Configuration archival should be configured with appropriate destinations and retention considerations so that useful historical versions remain available without creating unnecessary storage consumption.<\/span><\/p>\n

                        Question 232.<\/b><\/h3>\n

                        What does policy versioning help administrators identify?<\/b><\/p>\n

                          \n
                        1. Previous rulebase revisions<\/span><\/li>\n
                        2. Interface cable faults<\/span><\/li>\n
                        3. DNS recursion loops<\/span><\/li>\n
                        4. VPN peer latency<\/span><\/li>\n<\/ol>\n

                          Correct Answer: 3<\/b><\/p>\n

                          Explanation:<\/b><\/p>\n

                          Policy versioning allows administrators to distinguish different revisions of security policy configurations and track changes made over time. This can help identify when a rulebase was modified and provide useful context during troubleshooting or change review. Version information is especially valuable in centralized management environments where multiple policy revisions may be created before deployment. Interface cable faults, DNS recursion loops, and VPN peer latency require different diagnostic methods. Maintaining clear policy versions can improve operational traceability and make it easier to understand how a change in security behavior relates to a particular policy revision.<\/span><\/p>\n

                          Question 233.<\/b><\/h3>\n

                          What does policy publishing accomplish in centralized management?<\/b><\/p>\n

                            \n
                          1. Deletes device certificates<\/span><\/li>\n
                          2. Applies approved policy changes<\/span><\/li>\n
                          3. Rebuilds routing tables<\/span><\/li>\n
                          4. Resets application caches<\/span><\/li>\n<\/ol>\n

                            Correct Answer: 2<\/b><\/p>\n

                            Explanation:<\/b><\/p>\n

                            Policy publishing in centralized security management is used to distribute approved policy changes toward managed devices according to the management workflow. Creating or editing a policy does not necessarily mean that the resulting configuration is immediately active on every target device. Publishing provides the step through which the prepared changes are made available for deployment. Certificate deletion, routing-table rebuilding, and application-cache resets are unrelated operations. Administrators should understand the distinction between editing, reviewing, publishing, and deploying policies so that configuration changes occur in a controlled and traceable manner.<\/span><\/p>\n

                            Question 234.<\/b><\/h3>\n

                            What does policy check-out primarily control?<\/b><\/p>\n

                              \n
                            1. DNS server selection<\/span><\/li>\n
                            2. Concurrent rule editing<\/span><\/li>\n
                            3. VPN tunnel encryption<\/span><\/li>\n
                            4. Packet capture storage<\/span><\/li>\n<\/ol>\n

                              Correct Answer: 4<\/b><\/p>\n

                              Explanation:<\/b><\/p>\n

                              Policy check-out mechanisms can control concurrent editing of shared policy objects or rulebases in centralized management environments. By reserving a policy for modification, an administrator can reduce the risk that another administrator simultaneously changes the same configuration and creates conflicting edits. This supports more orderly change management and helps preserve configuration consistency. DNS server selection, VPN encryption, and packet-capture storage are separate functions. In environments with multiple administrators, understanding policy locking or check-out behavior is important because it affects who can modify a policy and how collaborative configuration changes are coordinated.<\/span><\/p>\n

                              Question 235.<\/b><\/h3>\n

                              Which authentication method commonly uses a centralized AAA server?<\/b><\/p>\n

                                \n
                              1. RADIUS<\/span><\/li>\n
                              2. Local database<\/span><\/li>\n
                              3. Certificate store<\/span><\/li>\n
                              4. Address book<\/span><\/li>\n<\/ol>\n

                                Correct Answer: 1<\/b><\/p>\n

                                Explanation:<\/b><\/p>\n

                                RADIUS is a centralized authentication and authorization protocol commonly used with AAA infrastructure. A security device can communicate with a RADIUS server to validate user credentials rather than maintaining every authentication record locally. This supports centralized administration and can simplify account management across multiple network devices. A local database stores credentials directly on the device, while a certificate store provides certificates rather than serving as a general AAA protocol. An address book contains network objects. RADIUS is therefore particularly useful when organizations want authentication services managed centrally and consistently across network security infrastructure.<\/span><\/p>\n

                                Question 236.<\/b><\/h3>\n

                                What does LDAP group mapping provide?<\/b><\/p>\n

                                  \n
                                1. Interface failover status<\/span><\/li>\n
                                2. User group association<\/span><\/li>\n
                                3. Packet fragmentation control<\/span><\/li>\n
                                4. Route metric adjustment<\/span><\/li>\n<\/ol>\n

                                  Correct Answer: 2<\/b><\/p>\n

                                  Explanation:<\/b><\/p>\n

                                  LDAP group mapping associates authenticated users with directory groups so that security policies or other access controls can use group membership as part of their decision process. This allows administrators to apply different security treatment according to organizational roles or directory-based group structures. The mechanism depends on appropriate directory integration and mapping configuration. Interface failover status, packet fragmentation control, and route metric adjustment are unrelated functions. Accurate group mapping is important because incorrect mappings can cause legitimate users to receive unexpected access behavior or prevent intended group-based policies from matching.<\/span><\/p>\n

                                  Question 237.<\/b><\/h3>\n

                                  What does a security intelligence feed primarily provide?<\/b><\/p>\n

                                    \n
                                  1. Threat indicators<\/span><\/li>\n
                                  2. Interface descriptions<\/span><\/li>\n
                                  3. Route preferences<\/span><\/li>\n
                                  4. Certificate chains<\/span><\/li>\n<\/ol>\n

                                    Correct Answer: 4<\/b><\/p>\n

                                    Explanation:<\/b><\/p>\n

                                    Security intelligence feeds provide threat-related indicators that can be used to identify or block traffic associated with known malicious infrastructure. Depending on the feed and integration, indicators may include addresses, domains, or other threat intelligence information. The purpose is to supplement local security controls with externally maintained information about potentially harmful resources. Interface descriptions, route preferences, and certificate chains serve different networking or security functions. Administrators should monitor feed availability and update status because stale or unavailable intelligence can reduce the usefulness of controls that depend on current threat indicators.<\/span><\/p>\n

                                    Question 238.<\/b><\/h3>\n

                                    What does an IDP signature severity indicate?<\/b><\/p>\n

                                      \n
                                    1. Interface bandwidth<\/span><\/li>\n
                                    2. Attack significance level<\/span><\/li>\n
                                    3. VPN lifetime<\/span><\/li>\n
                                    4. DNS response size<\/span><\/li>\n<\/ol>\n

                                      Correct Answer: 3<\/b><\/p>\n

                                      Explanation:<\/b><\/p>\n

                                      An IDP signature severity indicates the relative significance assigned to a detected attack or security event. Severity classification helps administrators understand the importance of an IDP detection and can influence how events are reviewed, logged, or handled according to the configured security policy. It does not describe interface bandwidth, VPN lifetime, or DNS response size. When analyzing IDP events, administrators can use severity information alongside attack identity, source, destination, and action details to determine the nature and context of detected traffic. Severity should be interpreted as part of the configured detection framework rather than as a measurement of network performance.<\/span><\/p>\n

                                      Question 239.<\/b><\/h3>\n

                                      Which screen can help detect IP sweep activity?<\/b><\/p>\n

                                        \n
                                      1. Port forwarding<\/span><\/li>\n
                                      2. IP sweep protection<\/span><\/li>\n
                                      3. DNS proxying<\/span><\/li>\n
                                      4. Certificate inspection<\/span><\/li>\n<\/ol>\n

                                        Correct Answer: 2<\/b><\/p>\n

                                        Explanation:<\/b><\/p>\n

                                        IP sweep protection is designed to identify traffic patterns associated with attempts to probe multiple addresses across a network. Such behavior can indicate reconnaissance activity in which a source attempts to discover active hosts or network resources. Security screens can apply configured thresholds or actions when traffic matches the relevant detection conditions. Port forwarding performs translation or redirection, DNS proxying handles name-resolution traffic, and certificate inspection concerns encrypted communications. Properly configured IP sweep protection can provide an additional layer of reconnaissance detection alongside other security-screen mechanisms such as port-scan or flood protections.<\/span><\/p>\n

                                        Question 240.<\/b><\/h3>\n

                                        What does source-route filtering help prevent?<\/b><\/p>\n

                                          \n
                                        1. Unauthorized packet path control<\/span><\/li>\n
                                        2. Excessive DNS caching<\/span><\/li>\n
                                        3. Duplicate application signatures<\/span><\/li>\n
                                        4. Expired authentication sessions<\/span><\/li>\n<\/ol>\n

                                          Correct Answer: 1<\/b><\/p>\n

                                          Explanation:<\/b><\/p>\n

                                          Source-route filtering helps prevent packets from using source-specified routing information to influence their path through the network. Source routing can provide a sender with greater control over how packets traverse intermediate systems, which may conflict with expected network routing and security assumptions. Filtering such options can therefore reduce exposure to traffic that attempts to bypass normal routing behavior. DNS caching, application signatures, and authentication-session expiration involve unrelated mechanisms. Security devices may inspect and restrict certain IP options as part of broader traffic-screening practices designed to reject unusual or potentially harmful packet characteristics.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

                                          View Full Juniper JN0-336 Exam Dumps and Practice Test Dumps   Question 221. What does Junos application identification timeout control? Application cache duration Route advertisement period Certificate renewal interval Cluster election timer Correct Answer: 1 Explanation: Application identification timeout controls how long identified application information remains valid for reuse. This behavior is important because application […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1648,1647],"tags":[],"_links":{"self":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/25122"}],"collection":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/comments?post=25122"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/25122\/revisions"}],"predecessor-version":[{"id":25123,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/25122\/revisions\/25123"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=25122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=25122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=25122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}