{"id":25120,"date":"2026-09-30T12:13:47","date_gmt":"2026-09-30T12:13:47","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=25120"},"modified":"2026-09-30T12:13:47","modified_gmt":"2026-09-30T12:13:47","slug":"juniper-jn0-336-practice-test-questions-and-exam-dumps-part11-q201-220","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/juniper-jn0-336-practice-test-questions-and-exam-dumps-part11-q201-220\/","title":{"rendered":"Juniper JN0-336 Practice Test Questions and Exam Dumps Part11 Q201-220"},"content":{"rendered":"

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

 <\/p>\n

Question 201.<\/b><\/h3>\n

Which feature helps Junos retain recently identified application information?<\/b><\/p>\n

    \n
  1. Application cache<\/span><\/li>\n
  2. Route cache<\/span><\/li>\n
  3. Session mirror<\/span><\/li>\n
  4. Policy archive<\/span><\/li>\n<\/ol>\n

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

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

    The application cache allows Junos to retain information about previously identified applications so that subsequent traffic can be processed more efficiently. Application identification does not necessarily require a completely new identification process for every packet or session when cached information remains valid. This can improve processing efficiency while maintaining application-aware security controls. The cache is associated with application identification behavior rather than routing, policy archiving, or session mirroring. Administrators should understand cache behavior when troubleshooting application recognition, particularly when traffic characteristics change or application identification appears inconsistent between sessions.<\/span><\/p>\n

    Question 202.<\/b><\/h3>\n

    What does an application-services hierarchy primarily organize?<\/b><\/p>\n

      \n
    1. Security log destinations<\/span><\/li>\n
    2. Related application services<\/span><\/li>\n
    3. VPN authentication keys<\/span><\/li>\n
    4. Interface monitoring groups<\/span><\/li>\n<\/ol>\n

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

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

      An application-services hierarchy organizes related applications and services into a structured relationship that can simplify application-aware configuration. This organization helps administrators understand how applications relate to one another and how Junos can classify traffic at different levels. It is particularly useful when working with application identification and security policies that reference applications or application groups. The hierarchy is not intended to organize logging destinations, VPN keys, or interface monitoring groups. Understanding these relationships can make application-based policy design more predictable and can help explain why a broader application category may match traffic associated with more specific applications.<\/span><\/p>\n

      Question 203.<\/b><\/h3>\n

      Which mechanism can identify traffic using custom protocol characteristics?<\/b><\/p>\n

        \n
      1. Address-set matching<\/span><\/li>\n
      2. Route-policy evaluation<\/span><\/li>\n
      3. Custom application signature<\/span><\/li>\n
      4. Interface-state tracking<\/span><\/li>\n<\/ol>\n

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

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

        A custom application signature can identify traffic according to protocol characteristics that are not adequately recognized by existing predefined signatures. Administrators can define matching characteristics appropriate to an organization\u2019s applications or specialized protocols. This capability supports more precise application-aware security policies when standard application identification does not provide the required classification. Address sets classify network addresses, route policies influence routing decisions, and interface-state tracking monitors connectivity rather than application content. Custom signatures should be designed carefully so that their matching conditions are sufficiently specific and do not unintentionally classify unrelated traffic as the target application.<\/span><\/p>\n

        Question 204.<\/b><\/h3>\n

        When should session-close logging be useful for a security policy?<\/b><\/p>\n

          \n
        1. During interface creation<\/span><\/li>\n
        2. During route installation<\/span><\/li>\n
        3. During certificate enrollment<\/span><\/li>\n
        4. After session termination<\/span><\/li>\n<\/ol>\n

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

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

          Session-close logging records information when a traffic session terminates, making it useful for reviewing completed connections. Such logs can provide details including session duration, transferred traffic, and termination-related information, depending on the configured logging behavior. This differs from session-init logging, which records information when a session begins. Session-close information can help administrators investigate completed communications, analyze traffic patterns, and correlate connection activity with security events. It is not associated with creating interfaces, installing routes, or enrolling certificates. Proper logging configuration can provide valuable operational visibility without requiring packet-level inspection of every connection.<\/span><\/p>\n

          Question 205.<\/b><\/h3>\n

          What determines which matching security policy is evaluated first?<\/b><\/p>\n

            \n
          1. Rulebase order<\/span><\/li>\n
          2. Interface speed<\/span><\/li>\n
          3. Route metric<\/span><\/li>\n
          4. DNS response<\/span><\/li>\n<\/ol>\n

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

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

            Security policy evaluation follows the configured rulebase order, so the position of policies can directly affect which rule handles matching traffic. When multiple policies could potentially match the same traffic, an earlier applicable policy can prevent later policies from being evaluated for that session. Administrators therefore need to arrange rules carefully and avoid placing broad conditions before more specific requirements when that would change intended behavior. Interface speed, routing metrics, and DNS responses do not determine security policy evaluation order. Reviewing rule placement is an important troubleshooting step when traffic appears to match an unexpected policy.<\/span><\/p>\n

            Question 206.<\/b><\/h3>\n

            What is a key benefit of a global address book?<\/b><\/p>\n

              \n
            1. It monitors cluster links<\/span><\/li>\n
            2. It provides shared address objects<\/span><\/li>\n
            3. It stores VPN certificates<\/span><\/li>\n
            4. It tracks application sessions<\/span><\/li>\n<\/ol>\n

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

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

              A global address book provides address objects that can be referenced across appropriate security configurations rather than being restricted to one individual security zone. This can simplify administration when the same network objects are required in multiple policies or zones. Centralizing commonly used address definitions also reduces duplicated configuration and makes object maintenance easier. Global address objects differ from zone-specific address books, which are associated with particular security zones. The address book does not monitor chassis links, store VPN certificates, or track application sessions. Correct object scope is important when designing reusable security policies and maintaining consistent network definitions.<\/span><\/p>\n

              Question 207.<\/b><\/h3>\n

              Which address pattern can match multiple related hosts using wildcard logic?<\/b><\/p>\n

                \n
              1. Exact host address<\/span><\/li>\n
              2. Single port object<\/span><\/li>\n
              3. Wildcard address object<\/span><\/li>\n
              4. Fixed route prefix<\/span><\/li>\n<\/ol>\n

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

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

                A wildcard address object can represent a range or collection of addresses according to defined matching logic, allowing policies to cover multiple related hosts without creating an individual object for every address. This can simplify security policy configuration in environments where address patterns follow predictable structures. An exact host address identifies one specific address, while a port object identifies a service endpoint rather than a network host. A route prefix serves routing purposes and should not be confused with policy address-object matching. Administrators should define wildcard patterns carefully because overly broad matching can unintentionally expand the traffic covered by a security policy.<\/span><\/p>\n

                Question 208.<\/b><\/h3>\n

                What does a DNS proxy commonly provide to connected clients?<\/b><\/p>\n

                  \n
                1. Local DNS forwarding<\/span><\/li>\n
                2. IPsec key exchange<\/span><\/li>\n
                3. BGP route filtering<\/span><\/li>\n
                4. Antivirus scanning<\/span><\/li>\n<\/ol>\n

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

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

                  A DNS proxy can provide local DNS forwarding services by accepting DNS requests from clients and forwarding those requests toward configured DNS servers. This allows the security device to participate in DNS resolution without requiring every client to communicate directly with external DNS infrastructure. DNS proxy behavior can also support centralized DNS handling and policy-related controls depending on the configuration. IPsec key exchange belongs to IKE, BGP route filtering belongs to routing policy, and antivirus scanning handles content inspection. Understanding DNS proxy operation is useful when troubleshooting client name resolution through a Junos security gateway.<\/span><\/p>\n

                  Question 209.<\/b><\/h3>\n

                  Which gateway feature can dynamically inspect FTP control traffic?<\/b><\/p>\n

                    \n
                  1. HTTP proxy<\/span><\/li>\n
                  2. DNS resolver<\/span><\/li>\n
                  3. FTP ALG<\/span><\/li>\n
                  4. BGP process<\/span><\/li>\n<\/ol>\n

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

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

                    An FTP application layer gateway, or ALG, can inspect FTP control traffic and assist the firewall in handling connection information associated with FTP sessions. FTP can establish additional data connections beyond the initial control connection, so simply treating it like an ordinary single-session application may not provide sufficient handling. The FTP ALG helps the security device understand FTP-specific connection behavior. An HTTP proxy handles web traffic, a DNS resolver handles name resolution, and BGP manages routing information. Understanding ALGs is particularly useful when troubleshooting applications that dynamically create related connections during an established session.<\/span><\/p>\n

                    Question 210.<\/b><\/h3>\n

                    Which ALG is associated with signaling and media sessions for voice communication?<\/b><\/p>\n

                      \n
                    1. SIP ALG<\/span><\/li>\n
                    2. FTP ALG<\/span><\/li>\n
                    3. DNS ALG<\/span><\/li>\n
                    4. ICMP handler<\/span><\/li>\n<\/ol>\n

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

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

                      A SIP ALG is designed to understand Session Initiation Protocol signaling associated with voice and multimedia communication. SIP signaling can contain addressing and session information that influences related media connections, so application-aware handling can be important when traffic crosses security boundaries. An ALG can help the security device interpret protocol-specific information rather than treating every packet as unrelated generic traffic. FTP ALG handles FTP behavior, DNS ALG handles DNS-related application processing, and ICMP handling concerns control and diagnostic messaging. SIP troubleshooting should consider both signaling behavior and the associated media traffic when security policies are involved.<\/span><\/p>\n

                      Question 211.<\/b><\/h3>\n

                      Which setting can help adjust the TCP maximum segment size?<\/b><\/p>\n

                        \n
                      1. TCP MSS value<\/span><\/li>\n
                      2. DNS timeout<\/span><\/li>\n
                      3. UDP threshold<\/span><\/li>\n
                      4. Route preference<\/span><\/li>\n<\/ol>\n

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

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

                        The TCP maximum segment size, or MSS, defines the largest TCP payload segment that a host should normally send without requiring fragmentation at the IP layer. Adjusting the MSS can help accommodate network paths with smaller effective MTUs, such as certain tunnel or encapsulated connections. This technique is commonly used to reduce fragmentation-related problems and improve reliability across constrained paths. DNS timeouts, UDP thresholds, and route preferences address different networking functions. When diagnosing connectivity issues involving VPNs or other encapsulated paths, checking MTU and MSS behavior can help explain symptoms such as stalled transfers or incomplete application responses.<\/span><\/p>\n

                        Question 212.<\/b><\/h3>\n

                        What does PMTU discovery help determine?<\/b><\/p>\n

                          \n
                        1. Largest usable path packet<\/span><\/li>\n
                        2. Preferred DNS server<\/span><\/li>\n
                        3. Active VPN peer<\/span><\/li>\n
                        4. Available security license<\/span><\/li>\n<\/ol>\n

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

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

                          Path MTU discovery is used to determine the largest packet size that can traverse a network path without requiring fragmentation. Different links or tunnels along a route can impose different maximum transmission unit limits, so the usable packet size may be smaller than the interface MTU. Proper PMTU handling can prevent packet delivery problems caused by oversized packets. DNS server selection, VPN peer status, and license availability are unrelated to PMTU discovery. Administrators troubleshooting applications that experience intermittent connectivity, especially across tunnels or layered networks, should consider whether path MTU limitations are affecting packet delivery.<\/span><\/p>\n

                          Question 213.<\/b><\/h3>\n

                          What does a TCP proxy primarily provide during connection establishment?<\/b><\/p>\n

                            \n
                          1. DNS recursion<\/span><\/li>\n
                          2. Route redistribution<\/span><\/li>\n
                          3. Intermediate connection handling<\/span><\/li>\n
                          4. Certificate storage<\/span><\/li>\n<\/ol>\n

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

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

                            A TCP proxy can act as an intermediate point during TCP connection establishment and processing. Instead of simply allowing endpoints to establish a direct TCP exchange through the security device, proxy behavior allows the device to participate more actively in connection handling. This can provide additional control and inspection opportunities, including protection against certain connection-establishment attacks when configured with appropriate security features. DNS recursion concerns name resolution, route redistribution concerns routing protocols, and certificate storage concerns authentication or encryption infrastructure. TCP proxy behavior should be understood alongside session management and security-screen protections when analyzing connection establishment.<\/span><\/p>\n

                            Question 214.<\/b><\/h3>\n

                            What can security flow trace filtering restrict?<\/b><\/p>\n

                              \n
                            1. Selected troubleshooting traffic<\/span><\/li>\n
                            2. All routing protocols<\/span><\/li>\n
                            3. Certificate authorities<\/span><\/li>\n
                            4. Configuration backups<\/span><\/li>\n<\/ol>\n

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

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

                              Security flow trace filtering allows administrators to narrow troubleshooting output to traffic that matches selected criteria. Instead of generating extensive information for every packet or session, administrators can define filters that focus attention on particular addresses, protocols, ports, or other relevant traffic characteristics. This makes flow troubleshooting more manageable and reduces unnecessary diagnostic output. Routing protocols, certificate authorities, and configuration backups are not the primary purpose of security flow trace filters. Carefully selecting a filter is important because an overly broad filter can produce excessive output, while an overly restrictive filter may omit the traffic required to identify the actual processing problem.<\/span><\/p>\n

                              Question 215.<\/b><\/h3>\n

                              Which tool can narrow packet capture results by traffic attributes?<\/b><\/p>\n

                                \n
                              1. Interface description<\/span><\/li>\n
                              2. Capture filter<\/span><\/li>\n
                              3. Route preference<\/span><\/li>\n
                              4. Policy comment<\/span><\/li>\n<\/ol>\n

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

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

                                A packet capture filter restricts captured traffic according to defined characteristics, allowing administrators to focus on relevant packets instead of collecting every packet observed on an interface. Filters can commonly be based on characteristics such as addresses, protocols, and ports. This makes packet analysis more efficient and can reduce the amount of data requiring examination. An interface description is descriptive metadata, route preference influences routing decisions, and a policy comment does not control packet capture. When troubleshooting a specific communication flow, a well-designed capture filter can significantly simplify analysis and make the resulting packet trace easier to interpret.<\/span><\/p>\n

                                Question 216.<\/b><\/h3>\n

                                What information does an interface statistics view primarily provide?<\/b><\/p>\n

                                  \n
                                1. Certificate expiration dates<\/span><\/li>\n
                                2. Packet and byte counters<\/span><\/li>\n
                                3. User authentication roles<\/span><\/li>\n
                                4. Application signatures<\/span><\/li>\n<\/ol>\n

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

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

                                  Interface statistics provide operational counters that describe traffic passing through an interface. These commonly include packet and byte counts and may also include information about errors, drops, or other interface conditions depending on the command and platform. Such statistics are useful for identifying whether an interface is actively receiving or transmitting traffic and whether abnormal counters suggest a physical or logical issue. Certificate expiration, authentication roles, and application signatures belong to different security or management functions. Comparing interface counters over time can help determine whether a suspected connectivity problem is actually associated with traffic reaching the expected interface.<\/span><\/p>\n

                                  Question 217.<\/b><\/h3>\n

                                  What must be associated with an interface for zone-based policy processing?<\/b><\/p>\n

                                    \n
                                  1. Security zone<\/span><\/li>\n
                                  2. Routing metric<\/span><\/li>\n
                                  3. DNS record<\/span><\/li>\n
                                  4. Certificate profile<\/span><\/li>\n<\/ol>\n

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

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

                                    A security zone provides the policy context for interfaces participating in zone-based firewall processing. When an interface is assigned to a security zone, traffic entering or leaving through that interface can be evaluated using security policies associated with the relevant source and destination zones. Without the appropriate zone association, the expected security policy processing model may not apply. Routing metrics, DNS records, and certificate profiles serve different purposes and do not replace security-zone membership. Correct interface-to-zone assignment is therefore an important configuration consideration when troubleshooting traffic that appears to bypass or fail to match expected security policies.<\/span><\/p>\n

                                    Question 218.<\/b><\/h3>\n

                                    What is a key purpose of an IP monitoring mechanism for redundancy?<\/b><\/p>\n

                                      \n
                                    1. Track DNS queries<\/span><\/li>\n
                                    2. Detect path failure<\/span><\/li>\n
                                    3. Update antivirus signatures<\/span><\/li>\n
                                    4. Record application names<\/span><\/li>\n<\/ol>\n

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

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

                                      IP monitoring can help a redundancy configuration detect loss of reachability beyond simple interface-state changes. A physical interface may remain operational while an important upstream path has become unavailable, so monitoring a specified IP target can provide additional information about network reachability. When configured as part of a redundancy strategy, such monitoring can contribute to decisions about whether traffic should fail over to another node or path. DNS queries, antivirus updates, and application names are unrelated functions. Effective IP monitoring requires carefully selected targets that meaningfully represent the availability of the network path being protected.<\/span><\/p>\n

                                      Question 219.<\/b><\/h3>\n

                                      Which routing-policy action can modify an eligible route attribute?<\/b><\/p>\n

                                        \n
                                      1. Reject<\/span><\/li>\n
                                      2. Advertise<\/span><\/li>\n
                                      3. Accept<\/span><\/li>\n
                                      4. Modify<\/span><\/li>\n<\/ol>\n

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

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

                                        A routing policy can use an action to modify selected route attributes when a route matches specified policy conditions. This allows administrators to influence how routes are treated or propagated without changing the underlying routing protocol itself. Depending on the policy and protocol, attributes can be adjusted to achieve specific routing behavior. Rejecting or accepting routes controls whether they are permitted, while advertising concerns propagation behavior. Route modification is therefore distinct from simple route admission. Understanding policy match and action logic is important when troubleshooting unexpected route attributes or examining why a routing protocol is selecting or exporting a particular route.<\/span><\/p>\n

                                        Question 220.<\/b><\/h3>\n

                                        What does OSPF authentication help protect?<\/b><\/p>\n

                                          \n
                                        1. DNS zone transfers<\/span><\/li>\n
                                        2. OSPF routing exchanges<\/span><\/li>\n
                                        3. Web proxy sessions<\/span><\/li>\n
                                        4. Antivirus databases<\/span><\/li>\n<\/ol>\n

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

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

                                          OSPF authentication helps protect routing exchanges between OSPF neighbors by requiring authenticated protocol communication according to the configured authentication method. This provides a mechanism for verifying that participating OSPF messages originate from authorized neighbors rather than being accepted solely because they arrive on the expected network. Authentication is therefore a routing-protocol security feature rather than a mechanism for protecting DNS transfers, web proxy sessions, or antivirus databases. Proper configuration requires compatible authentication settings on participating neighbors. When troubleshooting OSPF adjacency problems, administrators should verify that authentication requirements and credentials are consistent between the relevant interfaces.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

                                          View Full Juniper JN0-336 Exam Dumps and Practice Test Dumps   Question 201. Which feature helps Junos retain recently identified application information? Application cache Route cache Session mirror Policy archive Correct Answer: 1 Explanation: The application cache allows Junos to retain information about previously identified applications so that subsequent traffic can be processed more efficiently. […]<\/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\/25120"}],"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=25120"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/25120\/revisions"}],"predecessor-version":[{"id":25121,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/25120\/revisions\/25121"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=25120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=25120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=25120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}