{"id":13577,"date":"2026-09-16T09:39:00","date_gmt":"2026-09-16T09:39:00","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=13577"},"modified":"2026-09-16T09:39:00","modified_gmt":"2026-09-16T09:39:00","slug":"juniper-jn0-650-practice-test-questions-and-exam-dumps-part19-q361-380","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/juniper-jn0-650-practice-test-questions-and-exam-dumps-part19-q361-380\/","title":{"rendered":"Juniper JN0-650 Practice Test Questions and Exam Dumps Part19 Q361-380"},"content":{"rendered":"

<\/h1>\n

View Full <\/b>Juniper JN0-650 Exam Dumps<\/b><\/a> and Practice Test Dumps.<\/b><\/h2>\n

 <\/p>\n

Question 361:<\/b><\/h3>\n

Which BGP attribute is commonly used to indicate the preferred exit point from an autonomous system?<\/b><\/p>\n

    \n
  1. MED<\/span><\/li>\n
  2. Local preference<\/span><\/li>\n
  3. Origin<\/span><\/li>\n
  4. AS path<\/span><\/li>\n<\/ol>\n

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

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

    BGP local preference is used within an autonomous system to influence which exit point should be preferred for outbound traffic. A higher local-preference value is generally preferred over a lower value when comparing otherwise eligible BGP routes. Because local preference is propagated through iBGP, it can help ensure that routers within the same autonomous system make consistent outbound routing decisions. Local preference is different from MED, which is primarily used to influence how traffic enters an autonomous system from a neighboring AS. AS path length and origin are also considered during BGP route selection, but they serve different purposes in the decision process.<\/span><\/p>\n

    Question 362:<\/b><\/h3>\n

    What does the BGP AS path attribute help prevent?<\/b><\/p>\n

      \n
    1. OSPF adjacency failures<\/span><\/li>\n
    2. Layer 2 loops<\/span><\/li>\n
    3. BGP routing loops<\/span><\/li>\n
    4. VLAN mismatches<\/span><\/li>\n<\/ol>\n

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

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

      The BGP AS path attribute helps prevent routing loops between autonomous systems. When a BGP route is advertised through an autonomous system, the AS number is added to the AS path. If a router receives a route containing its own autonomous system number in the path, it can reject the route because accepting it could create a routing loop. The AS path also provides information about the sequence of autonomous systems through which a route has traveled. This information can participate in route selection, where a shorter AS path is generally preferred when comparing applicable routes. AS path therefore provides both loop-prevention and route-selection functions.<\/span><\/p>\n

      Question 363:<\/b><\/h3>\n

      Which BGP attribute is primarily intended to provide an indication of the preferred entry point into an autonomous system from a neighboring AS?<\/b><\/p>\n

        \n
      1. MED<\/span><\/li>\n
      2. Local preference<\/span><\/li>\n
      3. Community<\/span><\/li>\n
      4. Originator ID<\/span><\/li>\n<\/ol>\n

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

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

        The Multi-Exit Discriminator (MED) is commonly used to influence how a neighboring autonomous system selects among multiple entry points into the advertising autonomous system. A lower MED is generally preferred when the relevant BGP comparison is made. MED can be useful when two autonomous systems have multiple connections and one organization wants to suggest which connection should receive inbound traffic. MED is different from local preference, which is used internally to influence outbound path selection within an autonomous system. Because MED behavior can depend on the relationship and configuration between autonomous systems, administrators should understand the applicable BGP route-selection rules when using it.<\/span><\/p>\n

        Question 364:<\/b><\/h3>\n

        What is a BGP community primarily used for?<\/b><\/p>\n

          \n
        1. Identifying and grouping routes for policy processing<\/span><\/li>\n
        2. Calculating OSPF SPF trees<\/span><\/li>\n
        3. Assigning VLAN IDs automatically<\/span><\/li>\n
        4. Establishing Ethernet link aggregation<\/span><\/li>\n<\/ol>\n

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

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

          BGP communities are attributes that can be attached to routes so that groups of routes can be identified and handled consistently by routing policies. An administrator can use community values to classify routes and then apply policy actions such as accepting, rejecting, modifying, or controlling advertisement of those routes. Communities are particularly useful in larger environments because they avoid requiring complex prefix lists for every policy decision. A route can receive a community when it is imported or originated and can then be processed according to configured policy. Communities are unrelated to OSPF SPF calculations, VLAN assignment, or link aggregation.<\/span><\/p>\n

          Question 365:<\/b><\/h3>\n

          Which BGP session type is normally established between routers belonging to different autonomous systems?<\/b><\/p>\n

            \n
          1. iBGP<\/span><\/li>\n
          2. eBGP<\/span><\/li>\n
          3. OSPF<\/span><\/li>\n
          4. IS-IS<\/span><\/li>\n<\/ol>\n

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

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

            External BGP, or eBGP, is normally used to establish BGP sessions between routers in different autonomous systems. It is commonly used between organizations, service providers, or separate routing domains that exchange reachability information. Internal BGP, or iBGP, is used between BGP speakers within the same autonomous system. The distinction between eBGP and iBGP is important because their behavior and operational considerations differ. OSPF and IS-IS are interior gateway protocols rather than BGP session types. When troubleshooting an eBGP relationship, administrators commonly verify the peer address, autonomous system configuration, reachability, authentication if used, and TCP connectivity.<\/span><\/p>\n

            Question 366:<\/b><\/h3>\n

            Which BGP session type is used to exchange BGP routes between routers within the same autonomous system?<\/b><\/p>\n

              \n
            1. eBGP<\/span><\/li>\n
            2. iBGP<\/span><\/li>\n
            3. OSPF<\/span><\/li>\n
            4. LDP<\/span><\/li>\n<\/ol>\n

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

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

              Internal BGP, or iBGP, is used between BGP-speaking routers that belong to the same autonomous system. It allows routers inside the AS to share externally learned BGP routes and other BGP information. iBGP is an important component of enterprise and service-provider networks where multiple routers need consistent knowledge of external destinations. Traditional iBGP designs require consideration of the iBGP full-mesh rule, although route reflectors can reduce the amount of required peering. eBGP, by contrast, is used between different autonomous systems. OSPF is an IGP, while LDP is associated with MPLS label distribution and is not a BGP session type.<\/span><\/p>\n

              Question 367:<\/b><\/h3>\n

              What is the primary purpose of a BGP route reflector?<\/b><\/p>\n

                \n
              1. To reduce the need for a full iBGP mesh<\/span><\/li>\n
              2. To replace all OSPF routers<\/span><\/li>\n
              3. To assign IP addresses to clients<\/span><\/li>\n
              4. To perform NAT translation<\/span><\/li>\n<\/ol>\n

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

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

                A BGP route reflector reduces the number of iBGP sessions required inside an autonomous system. Without route reflection, traditional iBGP requires a full mesh between participating BGP routers, which can become difficult to manage as the network grows. A route reflector can receive routes from its clients and reflect appropriate routes to other clients or non-client peers according to BGP rules. This improves scalability while maintaining internal BGP route distribution. Route reflection does not replace the IGP, perform NAT, or assign client IP addresses. When designing route-reflector architectures, administrators must understand cluster configuration and route-reflection behavior to avoid unexpected routing results.<\/span><\/p>\n

                Question 368:<\/b><\/h3>\n

                Which BGP attribute is transitive and can be used to tag routes for policy decisions across autonomous-system boundaries?<\/b><\/p>\n

                  \n
                1. Local preference<\/span><\/li>\n
                2. BGP community<\/span><\/li>\n
                3. MED<\/span><\/li>\n
                4. Router ID<\/span><\/li>\n<\/ol>\n

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

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

                  The BGP community attribute can be used to tag routes so that routing policies can identify and process them consistently. Standard communities are transitive by default, meaning they can be carried across autonomous-system boundaries when not otherwise restricted. Organizations can use communities to communicate routing-policy information, such as identifying customer routes, preferred paths, or routes that should receive special handling. Local preference is primarily an internal BGP attribute and is not normally advertised to external BGP peers. MED and router ID serve different purposes. Communities are therefore a flexible mechanism for implementing scalable BGP policy and coordinating routing behavior between network domains.<\/span><\/p>\n

                  Question 369:<\/b><\/h3>\n

                  Which Junos command is most useful for viewing the configured BGP neighbors and detailed session information?<\/b><\/p>\n

                    \n
                  1. show bgp neighbor<\/span><\/li>\n
                  2. show ospf database<\/span><\/li>\n
                  3. show ethernet-switching table<\/span><\/li>\n
                  4. show system uptime<\/span><\/li>\n<\/ol>\n

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

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

                    The Junos <\/span>show bgp neighbor<\/span> command provides detailed information about BGP neighbors and their sessions. It can be used to examine operational details such as the peer address, autonomous system information, session state, message statistics, and various BGP parameters. This makes it particularly useful when troubleshooting a BGP session that is not establishing or behaving as expected. <\/span>show ospf database<\/span> is used for OSPF link-state information, while <\/span>show ethernet-switching table<\/span> focuses on Layer 2 MAC forwarding entries. <\/span>show system uptime<\/span> provides system runtime information. For detailed BGP peer troubleshooting, <\/span>show bgp neighbor<\/span> is therefore the most appropriate command.<\/span><\/p>\n

                    Question 370:<\/b><\/h3>\n

                    Which BGP attribute is considered a well-known mandatory attribute?<\/b><\/p>\n

                      \n
                    1. Origin<\/span><\/li>\n
                    2. Community<\/span><\/li>\n
                    3. MED<\/span><\/li>\n
                    4. Cluster ID<\/span><\/li>\n<\/ol>\n

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

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

                      The BGP Origin attribute is a well-known mandatory attribute. It indicates how the route was introduced into BGP and is carried with BGP route advertisements. Common origin values include IGP, EGP, and incomplete, with IGP generally preferred over EGP and incomplete when this part of the BGP selection process is reached. Other BGP attributes have different classifications and purposes. Communities provide policy tagging, MED can influence inbound path selection, and Cluster ID is associated with route-reflector operation. Understanding BGP attribute categories is useful when troubleshooting route selection because attributes have different propagation rules and different roles in the decision process.<\/span><\/p>\n

                      Question 371:<\/b><\/h3>\n

                      What does a BGP import policy primarily control on a Junos device?<\/b><\/p>\n

                        \n
                      1. Routes received from a BGP peer<\/span><\/li>\n
                      2. Physical interface speed<\/span><\/li>\n
                      3. OSPF Hello intervals<\/span><\/li>\n
                      4. Ethernet MAC learning<\/span><\/li>\n<\/ol>\n

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

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

                        A BGP import policy controls how routes received from a BGP neighbor are processed on a Junos device. The policy can match characteristics of incoming routes and then accept, reject, or modify them according to the configured requirements. For example, an administrator may use an import policy to accept only specific prefixes from a peer or modify a route attribute before the route is used. This provides an important layer of routing control and security. Import policy should not be confused with export policy, which controls routes being advertised to a peer. Physical interface settings, OSPF timers, and MAC learning are handled by other configuration mechanisms.<\/span><\/p>\n

                        Question 372:<\/b><\/h3>\n

                        What does a BGP export policy primarily control on a Junos device?<\/b><\/p>\n

                          \n
                        1. Which routes are advertised to a BGP peer<\/span><\/li>\n
                        2. Which Ethernet frames are switched<\/span><\/li>\n
                        3. Which OSPF packets are acknowledged<\/span><\/li>\n
                        4. Which users receive DHCP addresses<\/span><\/li>\n<\/ol>\n

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

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

                          A BGP export policy controls which routes a Junos device advertises to a BGP peer and how those routes may be modified before advertisement. Administrators can use policy terms to match specific prefixes, communities, or other route characteristics and then accept, reject, or modify the selected routes. This provides precise control over route propagation. For example, an export policy can prevent internal prefixes from being advertised externally or can attach a community to selected routes. Export policies are different from import policies, which process routes received from peers. Understanding policy direction is critical when troubleshooting why a BGP neighbor is or is not receiving particular routes.<\/span><\/p>\n

                          Question 373:<\/b><\/h3>\n

                          In EVPN-VXLAN, what is the primary purpose of a VTEP?<\/b><\/p>\n

                            \n
                          1. To encapsulate and decapsulate VXLAN traffic<\/span><\/li>\n
                          2. To elect the OSPF DR<\/span><\/li>\n
                          3. To assign BGP local preference<\/span><\/li>\n
                          4. To provide DNS resolution<\/span><\/li>\n<\/ol>\n

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

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

                            A VXLAN Tunnel Endpoint, or VTEP, performs VXLAN encapsulation and decapsulation. When a VTEP receives traffic that needs to cross the VXLAN overlay, it can encapsulate the original Ethernet frame inside a VXLAN\/UDP\/IP packet and send it across the IP underlay. At the remote VTEP, the VXLAN encapsulation is removed and the original Ethernet frame is delivered toward its destination. VTEPs therefore connect the Layer 2 overlay environment to the Layer 3 IP underlay. They are not responsible for OSPF DR election, BGP local-preference assignment, or DNS services. Correct VTEP operation is fundamental to EVPN-VXLAN connectivity.<\/span><\/p>\n

                            Question 374:<\/b><\/h3>\n

                            What does the VXLAN Network Identifier (VNI) identify?<\/b><\/p>\n

                              \n
                            1. A VXLAN overlay segment<\/span><\/li>\n
                            2. A BGP autonomous system<\/span><\/li>\n
                            3. An OSPF router ID<\/span><\/li>\n
                            4. An Ethernet MAC address<\/span><\/li>\n<\/ol>\n

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

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

                              The VXLAN Network Identifier, or VNI, identifies a logical VXLAN overlay segment. It provides segmentation within the VXLAN environment and allows multiple logical Layer 2 networks to share the same IP-based underlay infrastructure. The VNI is carried in the VXLAN header and helps the receiving VTEP determine the appropriate virtual network for the encapsulated traffic. A VNI is not a BGP autonomous system number, OSPF router ID, or MAC address. VXLAN uses the VNI to provide scalable network virtualization, allowing many logical segments to be transported across a common Layer 3 IP fabric while maintaining separation between those segments.<\/span><\/p>\n

                              Question 375:<\/b><\/h3>\n

                              Which EVPN route type advertises MAC and IP address information associated with an Ethernet segment?<\/b><\/p>\n

                                \n
                              1. Route Type 3<\/span><\/li>\n
                              2. Route Type 5<\/span><\/li>\n
                              3. Route Type 2<\/span><\/li>\n
                              4. Route Type 1<\/span><\/li>\n<\/ol>\n

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

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

                                EVPN Route Type 2 is the MAC\/IP Advertisement route. It is used to advertise MAC address information and, when available, associated IP address information for endpoints. In an EVPN-VXLAN environment, these routes allow VTEPs to learn where remote MAC\/IP endpoints are located through the EVPN control plane rather than relying solely on data-plane flooding. Route Type 1 is associated with Ethernet Auto-Discovery, while Route Type 3 is used for Inclusive Multicast Ethernet Tag information. Route Type 5 is used for IP Prefix routes. Understanding Route Type 2 is particularly important when troubleshooting endpoint reachability and MAC\/IP learning in an EVPN fabric.<\/span><\/p>\n

                                Question 376:<\/b><\/h3>\n

                                Which EVPN route type is used for Inclusive Multicast Ethernet Tag information?<\/b><\/p>\n

                                  \n
                                1. Route Type 1<\/span><\/li>\n
                                2. Route Type 2<\/span><\/li>\n
                                3. Route Type 3<\/span><\/li>\n
                                4. Route Type 4<\/span><\/li>\n<\/ol>\n

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

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

                                  EVPN Route Type 3 is known as the Inclusive Multicast Ethernet Tag route. It provides information used for handling broadcast, unknown-unicast, and multicast traffic within an EVPN environment. In VXLAN-based deployments, this control-plane information can help VTEPs determine the appropriate remote VTEPs for replication of certain traffic types. Route Type 1 is an Ethernet Auto-Discovery route, Type 2 advertises MAC\/IP information, and Type 4 provides Ethernet Segment information. Understanding Type 3 routes is important when troubleshooting BUM traffic behavior in an EVPN-VXLAN network, especially when investigating flooding, replication, or remote VTEP participation.<\/span><\/p>\n

                                  Question 377:<\/b><\/h3>\n

                                  Which EVPN route type is associated with Ethernet Auto-Discovery?<\/b><\/p>\n

                                    \n
                                  1. Route Type 1<\/span><\/li>\n
                                  2. Route Type 2<\/span><\/li>\n
                                  3. Route Type 3<\/span><\/li>\n
                                  4. Route Type 5<\/span><\/li>\n<\/ol>\n

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

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

                                    EVPN Route Type 1 is the Ethernet Auto-Discovery route. It is used in EVPN environments to advertise information related to Ethernet segments and supports functions such as multihoming operations. Ethernet Auto-Discovery routes can be used to identify reachability and participation associated with an Ethernet segment. Route Type 2 handles MAC\/IP advertisements, Type 3 provides Inclusive Multicast Ethernet Tag information, and Type 5 advertises IP prefixes. Type 1 routes become particularly important in EVPN multihoming scenarios, where multiple provider-edge or VTEP devices can provide connectivity to the same customer-facing Ethernet segment and need control-plane information to coordinate forwarding behavior.<\/span><\/p>\n

                                    Question 378:<\/b><\/h3>\n

                                    What is the main purpose of an Ethernet Segment Identifier (ESI) in EVPN multihoming?<\/b><\/p>\n

                                      \n
                                    1. To identify a shared Ethernet segment<\/span><\/li>\n
                                    2. To identify an OSPF area<\/span><\/li>\n
                                    3. To identify a BGP autonomous system<\/span><\/li>\n
                                    4. To identify a VXLAN UDP port<\/span><\/li>\n<\/ol>\n

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

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

                                      An Ethernet Segment Identifier, or ESI, identifies an Ethernet segment that is connected to multiple EVPN devices in a multihoming configuration. It allows the EVPN control plane to recognize that multiple network devices provide connectivity to the same Ethernet segment. This information supports multihoming functions such as designated-forwarder election and coordinated forwarding behavior. An ESI is not an OSPF area identifier, BGP autonomous system number, or VXLAN UDP port. Correct ESI configuration and advertisement are important when implementing redundant EVPN multihoming because the devices need a consistent understanding of the shared Ethernet segment.<\/span><\/p>\n

                                      Question 379:<\/b><\/h3>\n

                                      In EVPN multihoming, what is the primary purpose of Designated Forwarder (DF) election?<\/b><\/p>\n

                                        \n
                                      1. To determine which device forwards certain BUM traffic toward a multihomed segment<\/span><\/li>\n
                                      2. To select the OSPF router ID<\/span><\/li>\n
                                      3. To choose the BGP best path<\/span><\/li>\n
                                      4. To assign VXLAN VNIs<\/span><\/li>\n<\/ol>\n

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

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

                                        Designated Forwarder election in EVPN multihoming helps determine which participating device is responsible for forwarding certain broadcast, unknown-unicast, and multicast traffic toward the multihomed Ethernet segment. Without appropriate DF coordination, multiple devices could forward the same traffic toward the same segment, potentially causing duplication or loops. EVPN uses control-plane information associated with the Ethernet segment to coordinate this behavior. DF election is separate from OSPF router-ID selection and BGP best-path selection, and it does not assign VXLAN VNIs. Understanding DF behavior is important when troubleshooting BUM traffic and redundancy in EVPN multihomed deployments.<\/span><\/p>\n

                                        Question 380:<\/b><\/h3>\n

                                        Which CoS mechanism determines the relative treatment of packets when congestion causes packets to be dropped?<\/b><\/p>\n

                                          \n
                                        1. Router ID<\/span><\/li>\n
                                        2. Packet Loss Priority<\/span><\/li>\n
                                        3. BGP community<\/span><\/li>\n
                                        4. OSPF area ID<\/span><\/li>\n<\/ol>\n

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

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

                                          Packet Loss Priority (PLP) is a CoS classification characteristic used to indicate the relative importance of traffic when congestion occurs. Traffic can be assigned different loss priorities so that the network can preferentially protect more important packets while allowing lower-priority traffic to be discarded when necessary. PLP can work with other CoS mechanisms such as classifiers, drop profiles, schedulers, and rewrite rules to implement differentiated traffic treatment. It does not determine routing protocol behavior, BGP policy, or OSPF area membership. Proper PLP configuration can help ensure that critical applications receive better protection during periods of congestion and limited buffer availability.<\/span><\/p>\n

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

                                          View Full Juniper JN0-650 Exam Dumps and Practice Test Dumps.   Question 361: Which BGP attribute is commonly used to indicate the preferred exit point from an autonomous system? MED Local preference Origin AS path Correct Answer: 2 Explanation: BGP local preference is used within an autonomous system to influence which exit point should be […]<\/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\/13577"}],"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=13577"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/13577\/revisions"}],"predecessor-version":[{"id":13580,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/13577\/revisions\/13580"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=13577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=13577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=13577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}