{"id":17171,"date":"2026-09-21T06:52:39","date_gmt":"2026-09-21T06:52:39","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=17171"},"modified":"2026-09-21T06:52:39","modified_gmt":"2026-09-21T06:52:39","slug":"juniper-jn0-106-practice-test-questions-and-exam-dumps-part11-q201-220","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/juniper-jn0-106-practice-test-questions-and-exam-dumps-part11-q201-220\/","title":{"rendered":"Juniper JN0-106 Practice Test Questions and Exam Dumps Part11 Q201-220"},"content":{"rendered":"

View Full <\/b>Juniper JN0-106 Exam Dumps<\/b><\/a> and Practice Test Dumps.<\/b><\/h2>\n

 <\/p>\n

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

Which Junos command displays the configured routing protocols?<\/b><\/p>\n

    \n
  1. show protocols<\/span><\/li>\n
  2. show routing protocols<\/span><\/li>\n
  3. show configuration protocols<\/span><\/li>\n
  4. show system protocols<\/span><\/li>\n<\/ol>\n

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

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

    The show protocols command displays the configured protocol statements from the Junos configuration. Routing protocols such as OSPF and BGP are configured under the protocols hierarchy. Reviewing this information allows administrators to verify whether the expected routing protocols and related settings are configured. It is particularly useful when troubleshooting routing behavior because it shows the configuration rather than only the operational state. Administrators can combine this command with operational commands such as show ospf neighbor or show bgp summary to compare configured settings with actual protocol operation.<\/span><\/p>\n

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

    Which Junos command displays the current interface configuration hierarchy?<\/b><\/p>\n

      \n
    1. show interfaces<\/span><\/li>\n
    2. show configuration interfaces<\/span><\/li>\n
    3. show interfaces configuration<\/span><\/li>\n
    4. display interface configuration<\/span><\/li>\n<\/ol>\n

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

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

      The show configuration interfaces command displays the configured interface hierarchy. Administrators can use it to review interface addresses, descriptions, units, VLAN-related settings, and other configuration statements. This command shows configuration rather than detailed operational statistics. When troubleshooting an interface, it is useful to compare the configured settings with operational output from commands such as show interfaces terse. Reviewing both helps determine whether a problem results from configuration or from an operational condition such as a physical link failure.<\/span><\/p>\n

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

      Which command enters Junos configuration mode from operational mode?<\/b><\/p>\n

        \n
      1. configure<\/span><\/li>\n
      2. edit<\/span><\/li>\n
      3. set configuration<\/span><\/li>\n
      4. enter config<\/span><\/li>\n<\/ol>\n

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

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

        The configure command moves the administrator from operational mode into configuration mode. In configuration mode, administrators can create, modify, or delete candidate configuration statements. Changes made in this mode are not immediately active; they remain in the candidate configuration until they are committed. This separation allows administrators to review and validate changes before activating them. Junos also supports different configuration modes and methods for managing concurrent configuration work, depending on platform and requirements.<\/span><\/p>\n

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

        Which command returns from Junos configuration mode to operational mode?<\/b><\/p>\n

          \n
        1. quit<\/span><\/li>\n
        2. exit<\/span><\/li>\n
        3. leave<\/span><\/li>\n
        4. return<\/span><\/li>\n<\/ol>\n

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

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

          The exit command can be used to leave the current configuration level and return to the previous level. When used from the top level of configuration mode, it returns the administrator to operational mode. If there are uncommitted changes, Junos may prompt the administrator depending on the situation. Understanding how to move between configuration and operational modes is fundamental to Junos administration. The exit command can also be useful for moving upward through configuration hierarchy levels when editing specific sections.<\/span><\/p>\n

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

          Which command removes a configuration statement from the candidate configuration?<\/b><\/p>\n

            \n
          1. erase<\/span><\/li>\n
          2. delete<\/span><\/li>\n
          3. remove<\/span><\/li>\n
          4. clear<\/span><\/li>\n<\/ol>\n

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

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

            The delete command removes configuration statements from the candidate configuration. It is commonly used when an administrator needs to remove an existing setting or undo a configuration change before committing. Because Junos uses a candidate configuration, deleting a statement does not immediately modify the active configuration. The administrator can review the resulting differences and then commit the changes. This approach provides an opportunity to verify that the intended configuration remains intact before the deletion becomes active.<\/span><\/p>\n

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

            Which command creates or modifies a configuration statement in Junos configuration mode?<\/b><\/p>\n

              \n
            1. set<\/span><\/li>\n
            2. add<\/span><\/li>\n
            3. create<\/span><\/li>\n
            4. configure<\/span><\/li>\n<\/ol>\n

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

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

              The set command is commonly used to create or modify configuration statements in Junos configuration mode. It specifies the configuration hierarchy and the desired value or setting. Set-style commands are useful because each statement represents a complete path through the configuration hierarchy. Administrators often use them when making precise changes or documenting configuration commands. After using set, the change remains in the candidate configuration until it is committed. Administrators can review the changes before activation.<\/span><\/p>\n

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

              Which command displays the candidate configuration in hierarchical format?<\/b><\/p>\n

                \n
              1. show candidate<\/span><\/li>\n
              2. show configuration<\/span><\/li>\n
              3. display hierarchy<\/span><\/li>\n
              4. show config candidate<\/span><\/li>\n<\/ol>\n

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

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

                The show configuration command displays the candidate configuration in hierarchical format while in configuration mode. It allows administrators to review the configuration currently being edited before committing it. This is useful for verifying that expected statements have been added, changed, or removed. Because Junos separates candidate and active configurations, reviewing the candidate configuration is an important part of the configuration workflow. Administrators can also use display set when they need the same configuration represented as individual set commands.<\/span><\/p>\n

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

                Which command saves the current configuration to a file on the Junos device?<\/b><\/p>\n

                  \n
                1. save<\/span><\/li>\n
                2. store configuration<\/span><\/li>\n
                3. write configuration<\/span><\/li>\n
                4. backup config<\/span><\/li>\n<\/ol>\n

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

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

                  The save command can be used in Junos configuration mode to save configuration information to a file. Saving a configuration provides a convenient way to create a copy that can be referenced or transferred later. This is different from commit, which activates the candidate configuration. Administrators should understand the difference between saving configuration data to a file and committing changes to the active configuration. Configuration backups are useful during maintenance, upgrades, and recovery procedures.<\/span><\/p>\n

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

                  Which Junos feature allows an administrator to return to an earlier committed configuration?<\/b><\/p>\n

                    \n
                  1. Configuration rollback<\/span><\/li>\n
                  2. Configuration refresh<\/span><\/li>\n
                  3. Configuration reset<\/span><\/li>\n
                  4. Configuration restart<\/span><\/li>\n<\/ol>\n

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

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

                    Junos configuration rollback allows administrators to return to an earlier committed configuration. Junos maintains previous committed configurations so that earlier states can be restored when necessary. This is particularly useful when a recent change introduces unexpected behavior. An administrator can load a previous configuration into the candidate configuration, review it, and then commit it if appropriate. Rollback provides an important recovery mechanism and helps reduce the risk associated with configuration changes on production network devices.<\/span><\/p>\n

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

                    Which Junos command displays differences between the current candidate configuration and the previous committed configuration?<\/b><\/p>\n

                      \n
                    1. show | compare<\/span><\/li>\n
                    2. show | difference<\/span><\/li>\n
                    3. compare | configuration<\/span><\/li>\n
                    4. display | changes<\/span><\/li>\n<\/ol>\n

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

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

                      The show | compare command displays differences between the candidate configuration and the active configuration. It helps administrators review pending changes before committing them. The output can identify additions, modifications, and deletions, making it easier to verify whether the candidate configuration contains only the intended changes. This is especially valuable when many configuration statements have been modified. Reviewing configuration differences before committing can help prevent accidental changes and improve operational reliability.<\/span><\/p>\n

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

                      Which command displays the MAC address table on a Junos Ethernet switch?<\/b><\/p>\n

                        \n
                      1. show ethernet-switching table<\/span><\/li>\n
                      2. show mac-address table<\/span><\/li>\n
                      3. show switching mac<\/span><\/li>\n
                      4. show bridge mac-table<\/span><\/li>\n<\/ol>\n

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

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

                        The show ethernet-switching table command displays the Ethernet switching table on Junos switching platforms. The table contains learned MAC addresses and information about the interfaces or VLANs associated with those addresses. Switches use this information to determine where Ethernet frames should be forwarded. Administrators can inspect the table when troubleshooting Layer 2 connectivity or verifying whether a device’s MAC address has been learned. Dynamic entries are typically learned from received Ethernet frames.<\/span><\/p>\n

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

                        What does a switch learn from the source MAC address of an incoming Ethernet frame?<\/b><\/p>\n

                          \n
                        1. The destination IP address<\/span><\/li>\n
                        2. The source MAC address and associated interface<\/span><\/li>\n
                        3. The default gateway<\/span><\/li>\n
                        4. The DNS server<\/span><\/li>\n<\/ol>\n

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

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

                          An Ethernet switch learns the source MAC address from incoming frames and associates it with the interface on which the frame was received. This information is stored in the switching or MAC address table. When a frame is later sent toward that MAC address, the switch can forward it through the associated interface instead of flooding it to every port. MAC learning is fundamental to efficient Layer 2 switching. Administrators can inspect learned addresses to troubleshoot connectivity and verify that devices are connected as expected.<\/span><\/p>\n

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

                          Which VLAN type is commonly used to connect an end device that belongs to a single VLAN?<\/b><\/p>\n

                            \n
                          1. Trunk<\/span><\/li>\n
                          2. Access<\/span><\/li>\n
                          3. Routed<\/span><\/li>\n
                          4. Native-only<\/span><\/li>\n<\/ol>\n

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

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

                            An access interface is commonly used to connect an end device that belongs to a single VLAN. Frames arriving from the attached device are associated with that VLAN by the switch configuration. Access ports are frequently used for devices such as computers, printers, and servers that do not need to carry traffic for multiple VLANs. In contrast, trunk interfaces are designed to carry traffic for multiple VLANs. Proper VLAN assignment is important for ensuring that Layer 2 traffic reaches the intended broadcast domain.<\/span><\/p>\n

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

                            Which interface type is commonly used to carry traffic for multiple VLANs?<\/b><\/p>\n

                              \n
                            1. Access<\/span><\/li>\n
                            2. Loopback<\/span><\/li>\n
                            3. Trunk<\/span><\/li>\n
                            4. Management-only<\/span><\/li>\n<\/ol>\n

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

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

                              A trunk interface is designed to carry traffic belonging to multiple VLANs across a single physical connection. VLAN identification is maintained through tagging mechanisms such as IEEE 802.1Q. Trunks are commonly used between switches and between switching infrastructure and devices that need access to multiple VLANs. Proper trunk configuration is essential because mismatched VLAN settings can prevent traffic from reaching the correct broadcast domains. Administrators should verify VLAN membership and trunk-related configuration when troubleshooting Layer 2 connectivity.<\/span><\/p>\n

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

                              Which IEEE standard defines VLAN tagging commonly used on Ethernet trunk links?<\/b><\/p>\n

                                \n
                              1. IEEE 802.1X<\/span><\/li>\n
                              2. IEEE 802.1Q<\/span><\/li>\n
                              3. IEEE 802.3ad<\/span><\/li>\n
                              4. IEEE 802.11<\/span><\/li>\n<\/ol>\n

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

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

                                IEEE 802.1Q defines VLAN tagging for Ethernet networks. VLAN tags allow Ethernet frames to carry information identifying the VLAN to which the frame belongs. This is particularly important on trunk links that transport traffic for multiple VLANs. VLAN tagging enables switches to maintain separate broadcast domains while using shared physical links. Administrators configuring trunks need to ensure that both sides agree on the VLANs that are allowed and the relevant tagging behavior.<\/span><\/p>\n

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

                                Which protocol is designed to help prevent Layer 2 switching loops?<\/b><\/p>\n

                                  \n
                                1. STP<\/span><\/li>\n
                                2. FTP<\/span><\/li>\n
                                3. BGP<\/span><\/li>\n
                                4. NTP<\/span><\/li>\n<\/ol>\n

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

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

                                  Spanning Tree Protocol, or STP, helps prevent Layer 2 switching loops in Ethernet networks. Redundant links can provide resilience, but without loop-prevention mechanisms they can create broadcast storms and duplicate frames. STP logically blocks certain redundant paths while maintaining them as potential backup paths. If an active path fails, STP can allow an alternative path to become available according to the protocol’s operation. Administrators should understand spanning-tree behavior when designing and troubleshooting redundant Layer 2 networks.<\/span><\/p>\n

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

                                  Which command can display spanning-tree information on a Junos switching device?<\/b><\/p>\n

                                    \n
                                  1. show spanning-tree bridge<\/span><\/li>\n
                                  2. show protocols spanning-tree<\/span><\/li>\n
                                  3. show spanning-tree<\/span><\/li>\n
                                  4. show ethernet stp-status<\/span><\/li>\n<\/ol>\n

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

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

                                    The show spanning-tree command is used to display spanning-tree operational information on supported Junos switching platforms. The output can help administrators understand spanning-tree state, bridge information, and port participation. Spanning-tree troubleshooting often involves checking which interfaces are forwarding and which are participating in loop prevention. Administrators should also verify VLAN and interface configuration when diagnosing unexpected Layer 2 behavior. Exact spanning-tree details can vary depending on the Junos platform and configured spanning-tree protocol.<\/span><\/p>\n

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

                                    What is the primary purpose of a loopback interface?<\/b><\/p>\n

                                      \n
                                    1. Provide a stable logical interface address<\/span><\/li>\n
                                    2. Connect two physical Ethernet cables<\/span><\/li>\n
                                    3. Replace the routing table<\/span><\/li>\n
                                    4. Disable dynamic routing<\/span><\/li>\n<\/ol>\n

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

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

                                      A loopback interface is a logical interface that is not directly tied to a physical network link. Because it can remain available even when a particular physical interface fails, it is often used as a stable address for management or routing protocol identification. Loopback addresses are also commonly used as router identifiers in network designs. The exact role depends on the configuration and protocol. Administrators should distinguish loopback interfaces from physical interfaces because their operational characteristics are different.<\/span><\/p>\n

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

                                      Which IPv4 prefix length provides 256 total addresses?<\/b><\/p>\n

                                        \n
                                      1. \/30<\/span><\/li>\n
                                      2. \/24<\/span><\/li>\n
                                      3. \/26<\/span><\/li>\n
                                      4. \/28<\/span><\/li>\n<\/ol>\n

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

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

                                        An IPv4 \/24 network contains 256 total addresses because 24 bits are used for the network portion and 8 bits remain for host addressing. The total number of addresses is therefore 2 to the power of 8, which equals 256. In a traditional IPv4 subnet, some addresses are reserved for network and broadcast purposes, leaving fewer addresses for host assignment. Understanding prefix lengths is important when designing networks, allocating address space, and troubleshooting IP connectivity.<\/span><\/p>\n

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

                                        Which subnet mask corresponds to an IPv4 \/24 prefix?<\/b><\/p>\n

                                          \n
                                        1. 255.255.0.0<\/span><\/li>\n
                                        2. 255.255.255.0<\/span><\/li>\n
                                        3. 255.255.255.128<\/span><\/li>\n
                                        4. 255.255.255.252<\/span><\/li>\n<\/ol>\n

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

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

                                          The \/24 prefix corresponds to the subnet mask 255.255.255.0. The first 24 bits of the IPv4 address represent the network portion, while the remaining 8 bits represent the host portion. A \/24 network contains 256 total IPv4 addresses. This subnet size is commonly encountered in network configurations and is useful to recognize when reading interface addresses and routing tables. Correctly interpreting subnet masks helps administrators determine network boundaries, host ranges, and whether two IPv4 addresses belong to the same subnet.<\/span><\/p>\n

                                           <\/p>\n","protected":false},"excerpt":{"rendered":"

                                          View Full Juniper JN0-106 Exam Dumps and Practice Test Dumps.   Question 201 Which Junos command displays the configured routing protocols? show protocols show routing protocols show configuration protocols show system protocols Correct Answer: 1 Explanation The show protocols command displays the configured protocol statements from the Junos configuration. Routing protocols such as OSPF and […]<\/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\/17171"}],"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=17171"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/17171\/revisions"}],"predecessor-version":[{"id":17172,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/17171\/revisions\/17172"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=17171"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=17171"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=17171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}