{"id":14788,"date":"2026-09-17T07:17:58","date_gmt":"2026-09-17T07:17:58","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=14788"},"modified":"2026-09-17T07:17:58","modified_gmt":"2026-09-17T07:17:58","slug":"cisco-ccnp-300-415-practice-test-questions-and-exam-dumps-part20-q381-400","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/cisco-ccnp-300-415-practice-test-questions-and-exam-dumps-part20-q381-400\/","title":{"rendered":"Cisco CCNP 300-415 Practice Test Questions and Exam Dumps Part20 Q381-400"},"content":{"rendered":"

<\/h1>\n

View Full <\/b>Cisco CCNP 300-415 Exam Dumps<\/b><\/a> and Practice Test Dumps.<\/b><\/h2>\n

 <\/p>\n

Question 381<\/b><\/h3>\n

Which EIGRP packet is sent when a router needs information about a route that has become unavailable?<\/b><\/p>\n

    \n
  1. Update<\/span><\/li>\n
  2. Query<\/span><\/li>\n
  3. Reply<\/span><\/li>\n
  4. Hello<\/span><\/li>\n<\/ol>\n

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

    Explanation<\/b><\/h3>\n

    An EIGRP Query packet is sent when a router loses its successor for a destination and does not have a feasible successor available. The router uses DUAL to search for an alternative path and asks neighboring EIGRP routers whether they have a valid route to the destination. Those neighbors respond with Reply packets. Queries can propagate through the network if a suitable alternate route is not found quickly, which is why EIGRP stub configuration and route summarization can help limit query propagation. Hello packets maintain neighbor relationships, while Update packets advertise routing information. Understanding Query and Reply behavior is important when troubleshooting EIGRP convergence.<\/span><\/p>\n

    Question 382<\/b><\/h3>\n

    Which BGP attribute is normally propagated throughout an autonomous system through iBGP?<\/b><\/p>\n

      \n
    1. Weight<\/span><\/li>\n
    2. Local Preference<\/span><\/li>\n
    3. MED<\/span><\/li>\n
    4. Router ID<\/span><\/li>\n<\/ol>\n

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

      Explanation<\/b><\/h3>\n

      Local Preference is a BGP attribute used within an autonomous system to influence outbound traffic path selection. It is normally propagated through iBGP so that routers in the same autonomous system can apply a consistent routing policy. A higher Local Preference value is generally preferred. Weight is Cisco-specific and remains local to the router, so it is not advertised to BGP peers. MED can be advertised between autonomous systems, subject to policy and BGP behavior, while Router ID identifies the BGP speaker rather than serving as a normal path-selection attribute. Local Preference is therefore commonly used when administrators want to influence which exit point the AS uses for external destinations.<\/span><\/p>\n

      Question 383<\/b><\/h3>\n

      Which OSPF LSA provides information about the location of an ASBR in another area?<\/b><\/p>\n

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

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

        Explanation<\/b><\/h3>\n

        A Type 4 ASBR Summary LSA provides information that allows routers in another OSPF area to reach an ASBR. The ABR generates the Type 4 LSA to advertise reachability to the ASBR’s Router ID. This information is important when external routes represented by Type 5 LSAs are present outside the ASBR’s area. Type 3 LSAs advertise inter-area networks, Type 2 LSAs represent multiaccess networks, and Type 5 LSAs describe external routes. If external routes appear in the OSPF database but cannot be properly reached, administrators should verify the corresponding Type 4 information and connectivity toward the ASBR.<\/span><\/p>\n

        Question 384<\/b><\/h3>\n

        Which EIGRP table maintains information about directly connected EIGRP neighbors?<\/b><\/p>\n

          \n
        1. Topology table<\/span><\/li>\n
        2. Routing table<\/span><\/li>\n
        3. Neighbor table<\/span><\/li>\n
        4. Database Description table<\/span><\/li>\n<\/ol>\n

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

          Explanation<\/b><\/h3>\n

          The EIGRP neighbor table contains information about directly connected EIGRP peers. It records details such as the neighbor’s address, interface, hold time, uptime, and other operational information depending on the platform. EIGRP uses this information to maintain relationships with neighboring routers. The topology table stores route information learned through EIGRP, while the routing table contains routes selected for forwarding. Database Description is an OSPF concept and is not an EIGRP table. The command show ip eigrp neighbors can be used to verify whether expected EIGRP peers are established. If a neighbor is missing, administrators should investigate interfaces, AS numbers, authentication, addressing, and Hello communication.<\/span><\/p>\n

          Question 385<\/b><\/h3>\n

          Which BGP attribute is preferred when its value is higher?<\/b><\/p>\n

            \n
          1. MED<\/span><\/li>\n
          2. Local Preference<\/span><\/li>\n
          3. Origin<\/span><\/li>\n
          4. AS Path length<\/span><\/li>\n<\/ol>\n

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

            Explanation<\/b><\/h3>\n

            Local Preference is generally preferred when its value is higher. It is used within an autonomous system to influence the preferred exit point for outbound traffic. For example, an administrator can assign a higher Local Preference to routes learned through a desired external connection. Local Preference is propagated through iBGP so multiple routers can make consistent decisions. MED works in the opposite direction because a lower value is generally preferred. AS Path is generally preferred when shorter, and Origin has its own preference order rather than simply using a higher numerical value. Weight is also higher-is-better in Cisco BGP but is evaluated before Local Preference and remains local to the router.<\/span><\/p>\n

            Question 386<\/b><\/h3>\n

            Which OSPF neighbor state indicates that routers are exchanging Database Description packets?<\/b><\/p>\n

              \n
            1. Exchange<\/span><\/li>\n
            2. Loading<\/span><\/li>\n
            3. Init<\/span><\/li>\n
            4. Full<\/span><\/li>\n<\/ol>\n

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

              Explanation<\/b><\/h3>\n

              The Exchange state is the OSPF neighbor state in which routers exchange Database Description packets to summarize their link-state databases. Each router compares the received information with its own database and identifies LSAs that may be missing or outdated. After the Exchange phase, routers enter Loading if they need additional LSAs and use Link-State Request packets to obtain them. Once synchronization is complete, the adjacency reaches Full. Init occurs earlier when a router receives a Hello but has not yet confirmed bidirectional communication. Understanding the Exchange state is useful when diagnosing OSPF adjacencies that fail during database synchronization.<\/span><\/p>\n

              Question 387<\/b><\/h3>\n

              Which EIGRP value represents the total metric calculated by a router for reaching a destination?<\/b><\/p>\n

                \n
              1. Reported Distance<\/span><\/li>\n
              2. Feasible Distance<\/span><\/li>\n
              3. Administrative Distance<\/span><\/li>\n
              4. Hold Time<\/span><\/li>\n<\/ol>\n

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

                Explanation<\/b><\/h3>\n

                Feasible Distance is the total EIGRP metric calculated by a router for reaching a destination through a particular path. It includes the metric advertised by the neighbor plus the local router’s contribution based on the configured EIGRP metric components. The Feasible Distance is used by DUAL when selecting successors and evaluating alternate paths. Reported Distance, also called Advertised Distance, is the metric a neighboring router reports for reaching the destination. Administrative Distance is used to compare different routing sources, while Hold Time is associated with neighbor relationship maintenance. Understanding the difference between Feasible Distance and Reported Distance is essential for analyzing EIGRP path selection.<\/span><\/p>\n

                Question 388<\/b><\/h3>\n

                Which BGP message is exchanged periodically to maintain an established BGP session?<\/b><\/p>\n

                  \n
                1. Update<\/span><\/li>\n
                2. Notification<\/span><\/li>\n
                3. Open<\/span><\/li>\n
                4. Keepalive<\/span><\/li>\n<\/ol>\n

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

                  Explanation<\/b><\/h3>\n

                  BGP Keepalive messages are exchanged periodically to maintain an established BGP session. They allow each BGP speaker to confirm that the peer remains reachable and responsive. If expected Keepalive messages are not received within the configured Hold Time, the BGP session can be considered failed. Open messages are used during session establishment, Update messages exchange routing information, and Notification messages report errors and terminate the session. Keepalive traffic does not normally carry routing information. When troubleshooting intermittent BGP sessions, administrators can inspect neighbor timers, TCP connectivity, packet loss, and Keepalive and Hold Time behavior to determine why a session is repeatedly resetting.<\/span><\/p>\n

                  Question 389<\/b><\/h3>\n

                  Which OSPF LSA type is generated by an individual router to describe its links and connected OSPF networks?<\/b><\/p>\n

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

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

                    Explanation<\/b><\/h3>\n

                    Type 1 Router LSAs are generated by every OSPF router to describe its links, interfaces, and connected OSPF networks within an area. These LSAs form a fundamental part of the OSPF link-state database and are used by the SPF algorithm to calculate routes. Type 2 Network LSAs are generated by DRs on applicable multiaccess networks, Type 3 LSAs advertise inter-area networks, and Type 5 LSAs describe external routes. Because Type 1 LSAs are area-specific, each OSPF router maintains different link-state information for each area in which it participates. Examining Type 1 LSAs can help troubleshoot missing links or incorrect OSPF network advertisements.<\/span><\/p>\n

                    Question 390<\/b><\/h3>\n

                    Which EIGRP feature can reduce the scope of Query propagation?<\/b><\/p>\n

                      \n
                    1. Split horizon<\/span><\/li>\n
                    2. EIGRP stub<\/span><\/li>\n
                    3. Variance<\/span><\/li>\n
                    4. Passive interface<\/span><\/li>\n<\/ol>\n

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

                      Explanation<\/b><\/h3>\n

                      EIGRP stub routing helps reduce Query propagation by informing neighboring routers that the stub router should not be used as a transit path for certain EIGRP routes. When a route becomes unavailable, this can prevent queries from being unnecessarily propagated through the stub portion of the network. EIGRP stub is especially useful at branch locations where routers do not need to provide transit connectivity for the rest of the network. Split horizon controls route advertisement behavior, variance enables unequal-cost load balancing, and passive-interface prevents EIGRP neighbor formation on an interface. Proper stub design can improve scalability and help limit the impact of topology changes.<\/span><\/p>\n

                      Question 391<\/b><\/h3>\n

                      Which BGP attribute is primarily used to influence inbound traffic from another autonomous system?<\/b><\/p>\n

                        \n
                      1. MED<\/span><\/li>\n
                      2. Weight<\/span><\/li>\n
                      3. Local Preference<\/span><\/li>\n
                      4. Router ID<\/span><\/li>\n<\/ol>\n

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

                        Explanation<\/b><\/h3>\n

                        MED, or Multi-Exit Discriminator, can be used to influence how another autonomous system selects an entry point into the local autonomous system when multiple links exist between the two ASes. A lower MED is generally preferred when the attribute is considered. MED is therefore commonly associated with influencing inbound traffic, although the receiving AS controls its own routing policy and may ignore or modify MED information. Local Preference primarily influences outbound traffic within the local AS. Weight is local to a Cisco router, and Router ID identifies the BGP speaker. MED should therefore be viewed as a policy signal rather than a guaranteed instruction to a neighboring autonomous system.<\/span><\/p>\n

                        Question 392<\/b><\/h3>\n

                        Which OSPF network type normally elects a DR and BDR?<\/b><\/p>\n

                          \n
                        1. Point-to-point<\/span><\/li>\n
                        2. Loopback<\/span><\/li>\n
                        3. Broadcast<\/span><\/li>\n
                        4. Point-to-multipoint<\/span><\/li>\n<\/ol>\n

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

                          Explanation<\/b><\/h3>\n

                          The OSPF broadcast network type normally elects a Designated Router and Backup Designated Router. Ethernet networks commonly operate as broadcast multiaccess networks, where DR and BDR elections reduce the number of full OSPF adjacencies required. Routers on the segment form full adjacencies with the DR and BDR while other router relationships can remain in the 2-Way state. Point-to-point networks do not require DR or BDR elections. OSPF behavior can vary depending on the configured network type, so administrators should verify the actual interface configuration when troubleshooting. DR and BDR selection can also be influenced by OSPF interface priority and Router ID.<\/span><\/p>\n

                          Question 393<\/b><\/h3>\n

                          Which EIGRP route type has an administrative distance of 170 by default?<\/b><\/p>\n

                            \n
                          1. Internal EIGRP<\/span><\/li>\n
                          2. External EIGRP<\/span><\/li>\n
                          3. Static route<\/span><\/li>\n
                          4. Connected route<\/span><\/li>\n<\/ol>\n

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

                            Explanation<\/b><\/h3>\n

                            External EIGRP routes have a default administrative distance of 170. These routes originate from another routing source and are redistributed into EIGRP. Internal EIGRP routes have a default administrative distance of 90. Administrative distance determines the preference between routes learned from different routing sources when the same destination is available. Static and connected routes have different default administrative distances and are generally preferred over external EIGRP when competing for the same prefix. External EIGRP routes can be identified in routing-table output and may require investigation of redistribution policies, route filtering, and metric configuration when unexpected paths are installed or preferred.<\/span><\/p>\n

                            Question 394<\/b><\/h3>\n

                            Which BGP attribute describes how a route was introduced into BGP?<\/b><\/p>\n

                              \n
                            1. Origin<\/span><\/li>\n
                            2. Next Hop<\/span><\/li>\n
                            3. Weight<\/span><\/li>\n
                            4. Local Preference<\/span><\/li>\n<\/ol>\n

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

                              Explanation<\/b><\/h3>\n

                              The BGP Origin attribute indicates how a route was introduced into the BGP routing system. Its common values are IGP, EGP, and Incomplete. When comparing routes, BGP generally prefers IGP origin over EGP, and EGP over Incomplete. Routes introduced using a network statement can commonly have an IGP origin when the required route exists in the routing table. Routes redistributed into BGP commonly receive an Incomplete origin. The Origin attribute is different from the Next Hop attribute, which identifies the address used to reach the destination. Understanding Origin is important when analyzing BGP best-path selection after more-preferred attributes are equal.<\/span><\/p>\n

                              Question 395<\/b><\/h3>\n

                              Which OSPF packet is used to maintain neighbor relationships and discover OSPF neighbors?<\/b><\/p>\n

                                \n
                              1. Hello<\/span><\/li>\n
                              2. Database Description<\/span><\/li>\n
                              3. Link-State Request<\/span><\/li>\n
                              4. Link-State Acknowledgment<\/span><\/li>\n<\/ol>\n

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

                                Explanation<\/b><\/h3>\n

                                OSPF Hello packets are used to discover neighbors and maintain OSPF neighbor relationships. Hello packets carry information such as the Router ID, area ID, timers, network mask, authentication information when configured, and the list of known neighbors. Matching key parameters are required for successful neighbor formation. Hello packets are also used to determine whether neighbors remain reachable. Database Description packets synchronize summaries of the link-state database, Link-State Requests ask for specific LSAs, and Link-State Acknowledgments confirm receipt of LSAs. If OSPF neighbors fail to form, checking Hello intervals, Dead intervals, area configuration, network type, authentication, and addressing is an important troubleshooting step.<\/span><\/p>\n

                                Question 396<\/b><\/h3>\n

                                Which EIGRP mechanism is responsible for calculating loop-free paths and reacting to topology changes?<\/b><\/p>\n

                                  \n
                                1. SPF<\/span><\/li>\n
                                2. DUAL<\/span><\/li>\n
                                3. BGP Decision Process<\/span><\/li>\n
                                4. LSA Flooding<\/span><\/li>\n<\/ol>\n

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

                                  Explanation<\/b><\/h3>\n

                                  DUAL, or Diffusing Update Algorithm, is the core EIGRP mechanism responsible for calculating loop-free paths and managing convergence after topology changes. DUAL evaluates the Feasible Distance and Reported Distance of available paths and determines successors and feasible successors. If the successor fails and a feasible successor exists, EIGRP can often switch to the alternate path without querying the entire network. If no feasible successor is available, EIGRP may enter an active state and send Query packets. SPF is associated with OSPF, while BGP has its own path-selection process. LSA flooding is also an OSPF mechanism rather than an EIGRP process.<\/span><\/p>\n

                                  Question 397<\/b><\/h3>\n

                                  Which BGP attribute is Cisco-specific and has significance only on the local router?<\/b><\/p>\n

                                    \n
                                  1. MED<\/span><\/li>\n
                                  2. AS Path<\/span><\/li>\n
                                  3. Weight<\/span><\/li>\n
                                  4. Local Preference<\/span><\/li>\n<\/ol>\n

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

                                    Explanation<\/b><\/h3>\n

                                    Weight is a Cisco-specific BGP attribute that has local significance. It is not advertised to BGP peers, so assigning a Weight value affects route selection only on the router where the value is configured. A higher Weight is preferred in Cisco’s BGP best-path selection process. This makes Weight useful when an administrator wants to influence route selection on a specific router without affecting other routers in the autonomous system. Local Preference, in contrast, is commonly propagated through iBGP and can influence outbound path selection across the AS. MED and AS Path can be exchanged between BGP systems and have different policy implications.<\/span><\/p>\n

                                    Question 398<\/b><\/h3>\n

                                    Which OSPF state indicates that the neighbor databases are fully synchronized?<\/b><\/p>\n

                                      \n
                                    1. Loading<\/span><\/li>\n
                                    2. Full<\/span><\/li>\n
                                    3. Exchange<\/span><\/li>\n
                                    4. Init<\/span><\/li>\n<\/ol>\n

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

                                      Explanation<\/b><\/h3>\n

                                      The Full state indicates that the OSPF neighbors have completed database synchronization and have fully established their adjacency. In this state, the routers have synchronized the relevant link-state information for the adjacency. On broadcast networks, not every pair of routers necessarily reaches Full with one another because non-DR and non-BDR routers can remain in the 2-Way state. The Exchange state involves Database Description packets, while Loading involves requesting additional LSAs. Init occurs earlier during neighbor discovery. When an expected adjacency remains in a lower state, administrators can inspect MTU settings, timers, network type, authentication, and database synchronization behavior.<\/span><\/p>\n

                                      Question 399<\/b><\/h3>\n

                                      Which EIGRP packet confirms receipt of an EIGRP reliable packet?<\/b><\/p>\n

                                        \n
                                      1. Hello<\/span><\/li>\n
                                      2. Query<\/span><\/li>\n
                                      3. Acknowledgment<\/span><\/li>\n
                                      4. Update<\/span><\/li>\n<\/ol>\n

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

                                        Explanation<\/b><\/h3>\n

                                        An EIGRP Acknowledgment packet confirms receipt of a reliable EIGRP packet. EIGRP uses reliable and unreliable packet delivery mechanisms depending on the packet type and circumstances. Reliable packets such as Updates, Queries, and Replies require acknowledgment so that the sender can determine whether the information was successfully received. Hello packets are generally used for neighbor discovery and maintenance rather than route acknowledgment. Query packets request routing information, while Update packets advertise route information. Understanding EIGRP acknowledgment behavior can help troubleshoot neighbor relationships and packet delivery problems, particularly when reliable EIGRP packets are not being acknowledged as expected.<\/span><\/p>\n

                                        Question 400<\/b><\/h3>\n

                                        Which BGP attribute is generally preferred when the AS Path is shorter?<\/b><\/p>\n

                                          \n
                                        1. AS Path<\/span><\/li>\n
                                        2. MED<\/span><\/li>\n
                                        3. Local Preference<\/span><\/li>\n
                                        4. Weight<\/span><\/li>\n<\/ol>\n

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

                                          Explanation<\/b><\/h3>\n

                                          The AS Path attribute contains the sequence of autonomous systems through which a BGP route has passed. When earlier BGP best-path criteria are equal, a shorter AS Path is generally preferred because it represents fewer autonomous-system hops. AS Path also provides an important loop-prevention mechanism: a BGP router normally rejects a route if its own AS number already appears in the path. Weight and Local Preference are evaluated earlier in Cisco’s standard selection process, while MED is considered later. Administrators can manipulate AS Path length through techniques such as AS-path prepending to influence path selection, although the receiving router’s complete policy determines the final result.<\/span><\/p>\n

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

                                          View Full Cisco CCNP 300-415 Exam Dumps and Practice Test Dumps.   Question 381 Which EIGRP packet is sent when a router needs information about a route that has become unavailable? Update Query Reply Hello Correct Answer: 2 Explanation An EIGRP Query packet is sent when a router loses its successor for a destination 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\/14788"}],"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=14788"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/14788\/revisions"}],"predecessor-version":[{"id":14830,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/14788\/revisions\/14830"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=14788"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=14788"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=14788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}