{"id":12061,"date":"2026-09-15T05:48:38","date_gmt":"2026-09-15T05:48:38","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=12061"},"modified":"2026-09-15T05:48:38","modified_gmt":"2026-09-15T05:48:38","slug":"cisco-ccnp-300-410-practice-test-questions-and-exam-dumps-part-15-q281-300","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/cisco-ccnp-300-410-practice-test-questions-and-exam-dumps-part-15-q281-300\/","title":{"rendered":"Cisco CCNP 300-410 Practice Test Questions and Exam Dumps Part 15 Q281-300"},"content":{"rendered":"

View Full\u00a0Cisco 300-410 Exam Dumps<\/a>\u00a0and Practice Test Dumps.<\/p>\n

 <\/p>\n

Q281. Which OSPF LSA is generated by an ASBR to describe external routes redistributed into OSPF?<\/b><\/h3>\n

1)<\/b> Type 1 LSA<\/span>
\n<\/span> 2)<\/b> Type 3 LSA<\/span>
\n<\/span> 3)<\/b> Type 4 LSA<\/span>
\n<\/span> 4)<\/b> Type 5 LSA<\/span><\/p>\n

Correct Answer: 4) Type 5 LSA<\/b><\/p>\n

Explanation:<\/b>
\n<\/b> OSPF Type 5 LSAs are used to describe routes that are external to the OSPF autonomous system. They are typically generated by an Autonomous System Boundary Router (ASBR) when routes from another routing protocol, static routes, or other sources are redistributed into OSPF. Type 5 LSAs are normally flooded throughout the OSPF autonomous system, except into areas configured as stub areas. The Type 4 LSA does not carry the external network itself; instead, it provides information about how to reach the ASBR. Understanding the difference between Type 4 and Type 5 LSAs is important when troubleshooting external route redistribution.<\/span><\/p>\n

Q282. Which OSPF LSA identifies the location of an ASBR to routers in other areas?<\/b><\/h3>\n

1)<\/b> Type 2<\/span>
\n<\/span> 2)<\/b> Type 3<\/span>
\n<\/span> 3)<\/b> Type 4<\/span>
\n<\/span> 4)<\/b> Type 7<\/span><\/p>\n

Correct Answer: 3) Type 4<\/b><\/p>\n

Explanation:<\/b>
\n<\/b> OSPF Type 4 LSAs, known as ASBR Summary LSAs, provide information about how routers in one area can reach an Autonomous System Boundary Router located in another area. When an ASBR redistributes external routes into OSPF, routers outside the ASBR’s area need a path toward that ASBR. The Type 4 LSA provides this reachability information. It is generated by an ABR and is associated with the ASBR’s router ID. Type 5 LSAs describe the actual external destinations, while Type 4 LSAs help establish the path to the router responsible for those external routes.<\/span><\/p>\n

Q283. Which OSPF command can be used to verify the state of a configured virtual link?<\/b><\/h3>\n

1)<\/b> show ip ospf virtual-link<\/span>
\n<\/span> 2)<\/b> show ip ospf database virtual<\/span>
\n<\/span> 3)<\/b> show ospf link-state virtual<\/span>
\n<\/span> 4)<\/b> show ip virtual-link ospf<\/span><\/p>\n

Correct Answer: 1) <\/b>show ip ospf virtual-link<\/b><\/p>\n

Explanation:<\/b>
\n<\/b> The <\/span>show ip ospf virtual-link<\/span> command is useful for verifying OSPF virtual-link operation and configuration. The output can provide information about the transit area, remote router ID, timers, authentication settings, and the current state of the virtual link. A virtual link requires a stable OSPF relationship through a transit area and is intended to provide logical connectivity to Area 0. If the virtual link is not functioning, administrators should verify router IDs, transit-area configuration, matching authentication settings, and underlying OSPF connectivity. This command provides a focused view that is useful during virtual-link troubleshooting.<\/span><\/p>\n

Q284. Which EIGRP mechanism prevents an EIGRP router from advertising certain routes to a neighboring router?<\/b><\/h3>\n

1)<\/b> Route summarization<\/span>
\n<\/span> 2)<\/b> EIGRP stub<\/span>
\n<\/span> 3)<\/b> Split horizon<\/span>
\n<\/span> 4)<\/b> Passive interface<\/span><\/p>\n

Correct Answer: 3) Split horizon<\/b><\/p>\n

Explanation:<\/b>
\n<\/b> EIGRP split horizon prevents a router from advertising a route back through the same interface from which the route was learned. This behavior helps prevent routing loops in networks where multiple routers exchange routing information. Split horizon is particularly relevant in hub-and-spoke designs, including certain EIGRP deployments over multipoint networks. However, there are situations where disabling split horizon may be necessary, such as specific hub-and-spoke architectures where the hub must advertise routes learned from one spoke toward another spoke. Administrators should understand the topology before changing split-horizon behavior because disabling it unnecessarily can increase the possibility of routing loops.<\/span><\/p>\n

Q285. What is the primary purpose of the EIGRP variance command?<\/b><\/h3>\n

1)<\/b> To change the EIGRP autonomous system number<\/span>
\n<\/span> 2)<\/b> To allow unequal-cost load balancing<\/span>
\n<\/span> 3)<\/b> To disable route summarization<\/span>
\n<\/span> 4)<\/b> To change EIGRP hello timers<\/span><\/p>\n

Correct Answer: 2) To allow unequal-cost load balancing<\/b><\/p>\n

Explanation:<\/b>
\n<\/b> EIGRP <\/span>variance<\/span> enables unequal-cost load balancing by allowing certain feasible paths with higher metrics than the successor to be installed in the routing table. Without variance, EIGRP normally uses equal-cost paths for load balancing. The variance value acts as a multiplier against the best route’s feasible distance. However, a route must still satisfy the EIGRP feasibility condition before it can be used as a feasible successor and considered for unequal-cost load balancing. This feature is useful when multiple network paths have different bandwidth or delay characteristics but the administrator still wants to use more than one path.<\/span><\/p>\n

Q286. Which EIGRP packet type is used to discover and maintain neighbor relationships?<\/b><\/h3>\n

1)<\/b> Hello<\/span>
\n<\/span> 2)<\/b> Update<\/span>
\n<\/span> 3)<\/b> Query<\/span>
\n<\/span> 4)<\/b> Reply<\/span><\/p>\n

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

Explanation:<\/b>
\n<\/b> EIGRP Hello packets are used to discover neighboring EIGRP routers and maintain neighbor relationships. A router periodically sends Hello packets through EIGRP-enabled interfaces, and neighboring routers use these messages to verify that the relationship remains active. EIGRP uses a hold timer to determine how long it can go without receiving an expected Hello or other qualifying packet from a neighbor. Update packets are used to advertise routing information, while Query and Reply packets are involved in the Diffusing Update Algorithm during route calculations. Therefore, Hello packets are fundamental to establishing and maintaining EIGRP adjacencies.<\/span><\/p>\n

Q287. Which BGP attribute contains the sequence of autonomous systems through which a route has passed?<\/b><\/h3>\n

1)<\/b> NEXT_HOP<\/span>
\n<\/span> 2)<\/b> LOCAL_PREF<\/span>
\n<\/span> 3)<\/b> AS_PATH<\/span>
\n<\/span> 4)<\/b> MED<\/span><\/p>\n

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

Explanation:<\/b>
\n<\/b> The BGP AS_PATH attribute records the sequence of autonomous systems that a route advertisement has traversed. It serves two important purposes: helping BGP select routes and providing a mechanism for preventing routing loops. When an eBGP router advertises a route to another autonomous system, its own AS number is added to the AS_PATH. If a router receives a route containing its own AS number, it normally rejects that route because it indicates that the route has already passed through the local autonomous system. Administrators can also use AS-path filtering and prepending to implement routing policies.<\/span><\/p>\n

Q288. Which BGP attribute is normally considered first among these options when selecting the preferred path on a Cisco router?<\/b><\/h3>\n

1)<\/b> MED<\/span>
\n<\/span> 2)<\/b> Weight<\/span>
\n<\/span> 3)<\/b> Origin<\/span>
\n<\/span> 4)<\/b> AS_PATH<\/span><\/p>\n

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

Explanation:<\/b>
\n<\/b> On Cisco IOS, BGP Weight is a locally significant attribute that is considered early in the BGP best-path selection process. A higher Weight is preferred. Because Weight is local to the router, changing it does not directly affect other BGP routers. This makes Weight useful when an administrator wants one particular router to prefer a certain path without advertising that preference throughout the autonomous system. Local Preference is generally used when the preference needs to be communicated to other routers within the same AS. Understanding the distinction between Weight and Local Preference is important when designing Cisco BGP policies.<\/span><\/p>\n

Q289. Which BGP mechanism can prevent a customer from receiving an excessive number of routes from a provider?<\/b><\/h3>\n

1)<\/b> Maximum-prefix limit<\/span>
\n<\/span> 2)<\/b> Local Preference<\/span>
\n<\/span> 3)<\/b> Route reflection<\/span>
\n<\/span> 4)<\/b> MED<\/span><\/p>\n

Correct Answer: 1) Maximum-prefix limit<\/b><\/p>\n

Explanation:<\/b>
\n<\/b> The BGP maximum-prefix feature allows an administrator to define the maximum number of prefixes that may be received from a BGP neighbor. This provides a protective mechanism against unexpected routing-table growth caused by configuration errors, accidental route advertisements, or other problems. If the configured threshold is exceeded, the router can take an action such as warning the administrator or shutting down the BGP session, depending on the configuration. This feature is especially valuable on customer-provider connections and other external BGP relationships. Properly chosen limits can protect router resources while still allowing expected routing information to be exchanged.<\/span><\/p>\n

Q290. Which BGP feature allows an administrator to manipulate the AS_PATH length to influence inbound traffic?<\/b><\/h3>\n

1)<\/b> Local Preference<\/span>
\n<\/span> 2)<\/b> AS-path prepending<\/span>
\n<\/span> 3)<\/b> Weight<\/span>
\n<\/span> 4)<\/b> Route reflection<\/span><\/p>\n

Correct Answer: 2) AS-path prepending<\/b><\/p>\n

Explanation:<\/b>
\n<\/b> AS-path prepending involves adding additional copies of the local autonomous system number to the AS_PATH of advertised routes. Because BGP generally prefers a shorter AS_PATH when comparing otherwise suitable paths, making one path appear longer can encourage remote networks to select another path. This technique is commonly used to influence inbound traffic when an organization has multiple connections to external autonomous systems. It is important to understand that AS-path prepending is a routing-policy technique rather than a guarantee of traffic flow because remote networks may apply their own BGP policies and attributes.<\/span><\/p>\n

Q291. Which MPLS label operation removes the top label from a packet while leaving another label in place?<\/b><\/h3>\n

1)<\/b> Push<\/span>
\n<\/span> 2)<\/b> Swap<\/span>
\n<\/span> 3)<\/b> Pop<\/span>
\n<\/span> 4)<\/b> Rewrite<\/span><\/p>\n

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

Explanation:<\/b>
\n<\/b> An MPLS pop operation removes the top label from the MPLS label stack. In Layer 3 VPN environments, packets can contain multiple labels, such as an outer transport label and an inner VPN label. Penultimate Hop Popping commonly removes the outer transport label before the packet reaches the egress PE router, while the remaining label can still identify the appropriate VPN forwarding context. A push operation adds a label, and a swap operation replaces one label with another. Understanding these basic label operations is important when interpreting MPLS forwarding-table entries and troubleshooting label-switched paths.<\/span><\/p>\n

Q292. Which protocol is responsible for distributing MPLS labels in a traditional LDP-based MPLS network?<\/b><\/h3>\n

1)<\/b> LDP<\/span>
\n<\/span> 2)<\/b> NHRP<\/span>
\n<\/span> 3)<\/b> IKEv2<\/span>
\n<\/span> 4)<\/b> HSRP<\/span><\/p>\n

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

Explanation:<\/b>
\n<\/b> Label Distribution Protocol (LDP) is commonly used to distribute MPLS labels between routers and establish label-switched paths based on the underlying routing information. LDP routers discover neighbors and exchange label bindings for network prefixes. The underlying IGP, such as OSPF or IS-IS, normally provides IP reachability, while LDP associates labels with those reachable prefixes. This separation allows the IGP to determine the topology and LDP to distribute labels used for MPLS forwarding. Administrators troubleshooting MPLS should therefore verify both the IGP routing table and LDP neighbor and label information.<\/span><\/p>\n

Q293. In an MPLS Layer 3 VPN, what is the purpose of the Route Distinguisher?<\/b><\/h3>\n

1)<\/b> To encrypt VPN routes<\/span>
\n<\/span> 2)<\/b> To make overlapping customer prefixes unique<\/span>
\n<\/span> 3)<\/b> To select the HSRP active router<\/span>
\n<\/span> 4)<\/b> To calculate interface delay<\/span><\/p>\n

Correct Answer: 2) To make overlapping customer prefixes unique<\/b><\/p>\n

Explanation:<\/b>
\n<\/b> The MPLS VPN Route Distinguisher (RD) makes otherwise identical IPv4 prefixes unique within the VPNv4 address space. Different customers may use the same private network, such as 10.1.1.0\/24, without causing conflicts in the provider’s MP-BGP routing system. The RD is added to the IPv4 prefix to create a unique VPNv4 route. The RD itself does not determine which VRFs import or export routes; that function is handled by Route Targets. This distinction is important because RDs provide uniqueness, while Route Targets provide policy-based control over VPN route distribution.<\/span><\/p>\n

Q294. Which DMVPN phase normally requires the hub to remain involved in the initial NHRP resolution but allows direct spoke-to-spoke tunnels afterward?<\/b><\/h3>\n

1)<\/b> Phase 1<\/span>
\n<\/span> 2)<\/b> Phase 2<\/span>
\n<\/span> 3)<\/b> Phase 3<\/span>
\n<\/span> 4)<\/b> Phase 4<\/span><\/p>\n

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

Explanation:<\/b>
\n<\/b> DMVPN Phase 2 permits direct spoke-to-spoke communication after the necessary NHRP information has been obtained. The hub continues to provide an important role in NHRP registration and resolution, but data traffic can ultimately travel directly between spokes instead of always passing through the hub. Phase 1 generally forces spoke traffic through the hub, while Phase 3 introduces NHRP redirect and shortcut functionality to improve scalability and routing behavior. Phase 2 therefore represents an important step toward more efficient spoke-to-spoke communication, particularly when the routing design supports direct paths between participating spokes.<\/span><\/p>\n

Q295. Which command can be used to verify NHRP mappings on a DMVPN router?<\/b><\/h3>\n

1)<\/b> show dmvpn<\/span>
\n<\/span> 2)<\/b> show ip nhrp<\/span>
\n<\/span> 3)<\/b> show nhrp database<\/span>
\n<\/span> 4)<\/b> show ip tunnel nhrp<\/span><\/p>\n

Correct Answer: 2) <\/b>show ip nhrp<\/b><\/p>\n

Explanation:<\/b>
\n<\/b> The <\/span>show ip nhrp<\/span> command can be used to examine NHRP information, including mappings between protocol addresses and NBMA addresses. In DMVPN environments, this information is essential for understanding how tunnel endpoints are being resolved. Administrators can use the output to verify whether a spoke has learned the expected mapping for another spoke or the hub. If direct spoke-to-spoke communication fails, checking NHRP mappings is an important troubleshooting step. Other commands, such as <\/span>show dmvpn<\/span>, can provide additional DMVPN-specific information, but <\/span>show ip nhrp<\/span> focuses directly on NHRP registration and resolution data.<\/span><\/p>\n

Q296. Which IPsec protocol provides confidentiality, integrity, authentication, and anti-replay protection for IP packets?<\/b><\/h3>\n

1)<\/b> AH<\/span>
\n<\/span> 2)<\/b> ESP<\/span>
\n<\/span> 3)<\/b> GRE<\/span>
\n<\/span> 4)<\/b> LDP<\/span><\/p>\n

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

Explanation:<\/b>
\n<\/b> Encapsulating Security Payload (ESP) provides confidentiality through encryption and can also provide data integrity, authentication, and anti-replay protection. For this reason, ESP is widely used in modern IPsec VPN implementations. Authentication Header (AH) can provide integrity and authentication but does not provide encryption, making ESP more suitable when confidentiality is required. GRE is a tunneling protocol rather than an encryption protocol, although GRE can be protected by IPsec. LDP is associated with MPLS label distribution and has no role in securing IP traffic. Understanding these protocol roles is important when troubleshooting encrypted tunnel deployments.<\/span><\/p>\n

Q297. Which IPsec component negotiates security parameters and establishes the security association used to protect traffic?<\/b><\/h3>\n

1)<\/b> IKE<\/span>
\n<\/span> 2)<\/b> NHRP<\/span>
\n<\/span> 3)<\/b> BGP<\/span>
\n<\/span> 4)<\/b> SNMP<\/span><\/p>\n

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

Explanation:<\/b>
\n<\/b> Internet Key Exchange (IKE) is responsible for negotiating security parameters and establishing the security associations required for IPsec communication. IKE performs tasks such as peer authentication, cryptographic algorithm negotiation, and key exchange. Once the necessary security associations are established, IPsec can use them to protect data traffic. IKEv2 is the modern version commonly used in current VPN deployments and provides improvements in reliability and functionality compared with IKEv1. When troubleshooting an IPsec tunnel, administrators should distinguish between IKE negotiation problems and data-plane IPsec problems because successful IKE negotiation does not automatically guarantee that protected traffic is flowing correctly.<\/span><\/p>\n

Q298. Which first-hop redundancy protocol is commonly used on Cisco routers to provide a virtual default gateway?<\/b><\/h3>\n

1)<\/b> HSRP<\/span>
\n<\/span> 2)<\/b> LDP<\/span>
\n<\/span> 3)<\/b> EIGRP<\/span>
\n<\/span> 4)<\/b> NHRP<\/span><\/p>\n

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

Explanation:<\/b>
\n<\/b> Hot Standby Router Protocol (HSRP) provides first-hop redundancy by allowing multiple routers to share a virtual IP address that hosts use as their default gateway. One router operates as the active router while another can operate as the standby router. If the active router fails, the standby router can take over the virtual gateway role. HSRP can also use priority, preemption, and tracking to influence which router should be active. This prevents hosts from depending on a single physical router for external connectivity. HSRP is therefore widely used to improve gateway availability in enterprise networks.<\/span><\/p>\n

Q299. Which troubleshooting approach is most appropriate when an OSPF neighbor remains in the EXSTART state?<\/b><\/h3>\n

1)<\/b> Check for MTU mismatches between neighbors<\/span>
\n<\/span> 2)<\/b> Disable all routing protocols<\/span>
\n<\/span> 3)<\/b> Change the BGP Local Preference<\/span>
\n<\/span> 4)<\/b> Remove the default route<\/span><\/p>\n

Correct Answer: 1) Check for MTU mismatches between neighbors<\/b><\/p>\n

Explanation:<\/b>
\n<\/b> An OSPF adjacency stuck in the EXSTART or EXCHANGE state can often be associated with an MTU mismatch between neighboring interfaces. During database exchange, OSPF routers negotiate and exchange Database Description packets. If one router has a different interface MTU and the packets cannot be properly processed, the adjacency may fail to progress. Administrators should compare interface MTU values on both sides and also verify OSPF network type, authentication, and other relevant parameters. Commands such as <\/span>show ip ospf neighbor<\/span> and interface verification commands can help identify the cause. Correcting the mismatch can allow the adjacency to reach the FULL state.<\/span><\/p>\n

Q300. Which command is commonly used to verify the OSPF link-state database?<\/b><\/h3>\n

1)<\/b> show ip ospf database<\/span>
\n<\/span> 2)<\/b> show ip ospf neighbors<\/span>
\n<\/span> 3)<\/b> show ip route ospf-only<\/span>
\n<\/span> 4)<\/b> show ospf topology<\/span><\/p>\n

Correct Answer: 1) <\/b>show ip ospf database<\/b><\/p>\n

Explanation:<\/b>
\n<\/b> The <\/span>show ip ospf database<\/span> command displays the OSPF link-state database maintained by the router. It provides information about LSAs such as Router LSAs, Network LSAs, Summary LSAs, ASBR Summary LSAs, and External LSAs, depending on the network configuration. This command is extremely useful when troubleshooting OSPF because it allows administrators to determine whether expected LSAs are being generated and flooded. <\/span>show ip ospf neighbor<\/span> is better suited for checking adjacency states, while <\/span>show ip route<\/span> shows routes selected for installation. Examining the LSDB helps identify problems involving missing, unexpected, or incorrectly originated LSAs.<\/span><\/p>\n

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

View Full\u00a0Cisco 300-410 Exam Dumps\u00a0and Practice Test Dumps.   Q281. Which OSPF LSA is generated by an ASBR to describe external routes redistributed into OSPF? 1) Type 1 LSA 2) Type 3 LSA 3) Type 4 LSA 4) Type 5 LSA Correct Answer: 4) Type 5 LSA Explanation: OSPF Type 5 LSAs are used to […]<\/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\/12061"}],"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=12061"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/12061\/revisions"}],"predecessor-version":[{"id":12072,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/12061\/revisions\/12072"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=12061"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=12061"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=12061"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}