{"id":13665,"date":"2026-09-16T10:17:58","date_gmt":"2026-09-16T10:17:58","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=13665"},"modified":"2026-09-16T10:17:58","modified_gmt":"2026-09-16T10:17:58","slug":"cisco-ccde-400-007-practice-test-questions-and-exam-dumps-part8-q141-160","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/cisco-ccde-400-007-practice-test-questions-and-exam-dumps-part8-q141-160\/","title":{"rendered":"Cisco CCDE 400-007 Practice Test Questions and Exam Dumps Part8 Q141-160"},"content":{"rendered":"

<\/h1>\n

View Full <\/b>Cisco CCDE 400-007 Exam Dumps<\/b><\/a> and Practice Test Dumps.<\/b><\/h2>\n

 <\/p>\n

Question 141<\/b><\/h3>\n

A network architect is designing a data center fabric that must support predictable latency and multiple equal-cost forwarding paths between endpoints. Which topology is most appropriate?<\/b><\/p>\n

    \n
  1. Ring topology<\/span><\/li>\n
  2. Hub-and-spoke topology<\/span><\/li>\n
  3. Leaf-and-spine topology<\/span><\/li>\n
  4. Daisy-chain topology<\/span><\/li>\n<\/ol>\n

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

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

    A leaf-and-spine topology provides predictable connectivity between endpoints and supports multiple equal-cost paths through the spine layer. Each leaf typically connects to multiple spine devices, allowing traffic between different leaf switches to use ECMP. This architecture is widely used in modern data centers because it provides consistent hop counts and scalable east-west connectivity. Ring and daisy-chain designs can introduce additional path dependencies, while hub-and-spoke designs concentrate traffic around central devices. Leaf-and-spine is therefore well suited for high-scale data center environments requiring multipath forwarding.<\/span><\/p>\n

    Question 142<\/b><\/h3>\n

    An enterprise wants to control which routes are accepted from a BGP neighbor based on specific network prefixes. Which mechanism should be used?<\/b><\/p>\n

      \n
    1. Prefix list<\/span><\/li>\n
    2. HSRP<\/span><\/li>\n
    3. BFD<\/span><\/li>\n
    4. EtherChannel<\/span><\/li>\n<\/ol>\n

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

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

      A prefix list can be used to match specific IP prefixes and control whether those routes are accepted, rejected, or processed by routing policies. Prefix lists are commonly combined with route maps or routing policies to filter BGP advertisements and implement precise routing controls. HSRP provides gateway redundancy, BFD provides rapid failure detection, and EtherChannel aggregates physical links. Prefix filtering is particularly important when establishing BGP sessions with external networks because it can prevent unwanted routes from entering the routing table and help protect against routing-policy errors.<\/span><\/p>\n

      Question 143<\/b><\/h3>\n

      A company has several Internet connections and wants internal users to reach external destinations through the most appropriate available exit point. Which BGP attribute is commonly used within the autonomous system to influence this decision?<\/b><\/p>\n

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

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

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

        Local Preference is commonly used to influence outbound path selection within an autonomous system. BGP routers prefer the path with the higher Local Preference value, allowing administrators to establish a preferred Internet exit point. Because Local Preference is propagated through iBGP, the policy can be applied consistently across internal routers. MED is generally used to influence how another autonomous system selects an entry point, while Origin has a lower priority in BGP path selection. The Next-Hop attribute identifies the next-hop address but is not normally the primary tool for setting a preferred outbound provider.<\/span><\/p>\n

        Question 144<\/b><\/h3>\n

        A network uses OSPF and requires a logical interface that remains available even if the physical interface associated with one specific path changes. Which interface type can provide this abstraction?<\/b><\/p>\n

          \n
        1. Loopback interface<\/span><\/li>\n
        2. VLAN access port<\/span><\/li>\n
        3. Physical serial interface<\/span><\/li>\n
        4. Console interface<\/span><\/li>\n<\/ol>\n

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

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

          A loopback interface is a logical interface that is not directly tied to the operational state of a particular physical interface. In routing designs, loopback addresses are commonly used as stable router identifiers, BGP update sources, OSPF router IDs, and tunnel endpoints. Because a loopback can remain reachable through multiple physical paths, it provides a stable logical identity for the device. Physical interfaces depend on their associated links, while console interfaces are intended for management access. A loopback interface therefore provides the desired abstraction for routing and control-plane functions.<\/span><\/p>\n

          Question 145<\/b><\/h3>\n

          A service provider wants customers to exchange routes with the provider while keeping each customer’s routing information logically isolated. Which technology provides separate customer routing tables?<\/b><\/p>\n

            \n
          1. STP<\/span><\/li>\n
          2. VRF<\/span><\/li>\n
          3. LACP<\/span><\/li>\n
          4. ARP<\/span><\/li>\n<\/ol>\n

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

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

            VRF provides separate routing and forwarding tables on a shared router. In a service-provider environment, each customer can be assigned a separate VRF so that customer routes remain isolated from other customers. This also allows customers to use overlapping address ranges without creating conflicts in the provider’s global routing table. STP is used to prevent Layer 2 loops, LACP negotiates link aggregation, and ARP resolves IPv4 addresses to MAC addresses. VRF is therefore the fundamental technology for maintaining separate customer routing domains on shared infrastructure.<\/span><\/p>\n

            Question 146<\/b><\/h3>\n

            A network architect wants to use multiple physical links between two switches as one logical connection while providing redundancy if one link fails. Which protocol is commonly used to dynamically negotiate the link bundle?<\/b><\/p>\n

              \n
            1. OSPF<\/span><\/li>\n
            2. LACP<\/span><\/li>\n
            3. BGP<\/span><\/li>\n
            4. VRRP<\/span><\/li>\n<\/ol>\n

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

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

              Link Aggregation Control Protocol (LACP) dynamically negotiates and maintains a bundle of physical Ethernet links as a logical port-channel. This provides increased aggregate bandwidth and redundancy because the logical connection can continue operating if an individual member link fails. LACP also helps ensure that both sides of the connection agree on which interfaces should participate in the bundle. OSPF and BGP are routing protocols, while VRRP provides first-hop gateway redundancy. LACP is therefore the appropriate protocol when dynamic link aggregation is required.<\/span><\/p>\n

              Question 147<\/b><\/h3>\n

              A company wants to ensure that a particular application uses a WAN path with low latency, while less sensitive traffic can use another available link. Which capability is most appropriate?<\/b><\/p>\n

                \n
              1. Application-aware traffic steering<\/span><\/li>\n
              2. STP root selection<\/span><\/li>\n
              3. Route summarization<\/span><\/li>\n
              4. MAC address filtering<\/span><\/li>\n<\/ol>\n

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

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

                Application-aware traffic steering allows network policies to select forwarding paths based on application requirements and measured network conditions. A latency-sensitive application can be directed toward a path that satisfies the required performance characteristics, while less sensitive traffic can use another available transport. This capability is commonly associated with SD-WAN architectures and advanced traffic-engineering solutions. STP root selection concerns Layer 2 topology, route summarization reduces routing information, and MAC filtering controls Layer 2 access. Application-aware steering directly addresses the requirement for differentiated WAN path selection.<\/span><\/p>\n

                Question 148<\/b><\/h3>\n

                An enterprise wants to reduce the amount of routing information advertised from a regional network into the core. Which technique can accomplish this?<\/b><\/p>\n

                  \n
                1. Route summarization<\/span><\/li>\n
                2. Port security<\/span><\/li>\n
                3. NAT<\/span><\/li>\n
                4. HSRP<\/span><\/li>\n<\/ol>\n

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

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

                  Route summarization combines multiple specific prefixes into a larger aggregate prefix. By advertising the summary instead of every individual route, a regional network can reduce the amount of routing information sent toward the core. This can decrease routing-table size, reduce control-plane processing, and limit the propagation of some topology changes. The summary must be designed carefully to avoid creating incorrect reachability information. Port security controls switch access, NAT translates addresses, and HSRP provides gateway redundancy. Route summarization is therefore the appropriate technique for reducing advertised routing information.<\/span><\/p>\n

                  Question 149<\/b><\/h3>\n

                  A network architect needs to provide secure communication between two sites across the public Internet. Which technology provides encryption and authentication for the IP traffic?<\/b><\/p>\n

                    \n
                  1. VXLAN<\/span><\/li>\n
                  2. IPsec<\/span><\/li>\n
                  3. STP<\/span><\/li>\n
                  4. DHCP<\/span><\/li>\n<\/ol>\n

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

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

                    IPsec provides security services for IP communication, including encryption, authentication, integrity protection, and anti-replay mechanisms. It is commonly used to create secure site-to-site VPN connections over public or otherwise untrusted networks. IPsec can protect traffic between branch offices, data centers, and other locations depending on the network design. VXLAN provides network virtualization rather than encryption, STP manages Layer 2 loop prevention, and DHCP provides address configuration. Therefore, IPsec is the appropriate technology when confidentiality and integrity of traffic across an untrusted network are required.<\/span><\/p>\n

                    Question 150<\/b><\/h3>\n

                    A BGP administrator wants to attach a standardized policy tag to routes so that downstream routers can apply filtering or routing policies. Which feature should be used?<\/b><\/p>\n

                      \n
                    1. BGP community<\/span><\/li>\n
                    2. OSPF router ID<\/span><\/li>\n
                    3. Ethernet MTU<\/span><\/li>\n
                    4. TCP port number<\/span><\/li>\n<\/ol>\n

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

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

                      BGP communities allow routes to carry policy-related tags that can be recognized by other BGP routers. Administrators can use these tags to implement policies such as route filtering, preference changes, selective advertisement, or special handling by downstream devices. Standard, extended, and large communities can be used depending on the requirements and network design. OSPF router IDs identify OSPF routers but do not provide the same policy-tagging mechanism. Ethernet MTU affects frame size, while TCP port numbers identify transport-layer services. BGP communities are therefore the appropriate mechanism for carrying routing-policy information.<\/span><\/p>\n

                      Question 151<\/b><\/h3>\n

                      A data center network needs to extend Layer 2 segments across a routed IP underlay while maintaining scalable segmentation. Which technology is most suitable?<\/b><\/p>\n

                        \n
                      1. HSRP<\/span><\/li>\n
                      2. VXLAN<\/span><\/li>\n
                      3. DHCP<\/span><\/li>\n
                      4. GRE without an overlay control plane<\/span><\/li>\n<\/ol>\n

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

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

                        VXLAN enables Layer 2 network segments to be extended across a Layer 3 IP underlay by encapsulating Ethernet frames inside VXLAN packets. It provides a large virtual network identifier space, allowing many logical segments to coexist within the same physical infrastructure. VXLAN is commonly deployed with EVPN to provide a scalable control plane for MAC and IP reachability. HSRP provides gateway redundancy, DHCP provides host configuration, and a basic GRE tunnel does not provide the same integrated data center segmentation and control-plane capabilities. VXLAN is therefore appropriate for scalable Layer 2-over-Layer 3 data center designs.<\/span><\/p>\n

                        Question 152<\/b><\/h3>\n

                        A network has two equal-cost routes to the same destination and the architect wants both paths to carry traffic. Which forwarding mechanism should be enabled or supported?<\/b><\/p>\n

                          \n
                        1. ECMP<\/span><\/li>\n
                        2. NAT<\/span><\/li>\n
                        3. PBR<\/span><\/li>\n
                        4. Route filtering<\/span><\/li>\n<\/ol>\n

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

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

                          Equal-Cost Multipath allows multiple routes with the same routing cost to be installed and used for forwarding. Traffic can then be distributed across the available paths according to the platform’s hashing or load-balancing mechanism. ECMP improves utilization and provides path redundancy because traffic can continue through another path if one equal-cost path fails. NAT performs address translation, PBR makes forwarding decisions based on policy, and route filtering controls route acceptance or advertisement. ECMP is therefore the appropriate mechanism for using multiple equal-cost paths simultaneously.<\/span><\/p>\n

                          Question 153<\/b><\/h3>\n

                          An enterprise wants to prevent routes learned through one routing protocol from being redistributed back into that same protocol after passing through another routing domain. Which technique can help identify the route source?<\/b><\/p>\n

                            \n
                          1. Route tagging<\/span><\/li>\n
                          2. MTU adjustment<\/span><\/li>\n
                          3. ECMP<\/span><\/li>\n
                          4. Link aggregation<\/span><\/li>\n<\/ol>\n

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

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

                            Route tagging can mark routes with information identifying their source or redistribution history. When routes are redistributed between multiple routing protocols, the receiving policy can inspect the tag and prevent routes from being redistributed back into their original protocol. This helps reduce routing loops and provides better control over redistribution. MTU adjustment affects packet size, ECMP provides multipath forwarding, and link aggregation combines physical interfaces. Route tagging is therefore useful for controlling complex redistribution designs and preventing unwanted route feedback.<\/span><\/p>\n

                            Question 154<\/b><\/h3>\n

                            A company is deploying a multi-tenant data center and needs each tenant to have independent Layer 3 routing while using the same physical switching infrastructure. Which technology should be considered?<\/b><\/p>\n

                              \n
                            1. VRF<\/span><\/li>\n
                            2. STP<\/span><\/li>\n
                            3. LACP<\/span><\/li>\n
                            4. BFD<\/span><\/li>\n<\/ol>\n

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

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

                              VRF provides separate Layer 3 routing and forwarding tables on shared network devices. Each tenant can therefore maintain an independent routing domain while using the same physical infrastructure. VRFs are commonly used in multi-tenant data centers to provide logical isolation and allow different tenants to use overlapping IP address spaces when appropriate. STP provides Layer 2 loop prevention, LACP provides link aggregation, and BFD provides rapid failure detection. VRF directly addresses the requirement for independent Layer 3 routing domains in a shared infrastructure.<\/span><\/p>\n

                              Question 155<\/b><\/h3>\n

                              A network architect wants routing convergence to occur quickly after a point-to-point link failure. Which mechanism can improve failure detection time?<\/b><\/p>\n

                                \n
                              1. BFD<\/span><\/li>\n
                              2. NAT<\/span><\/li>\n
                              3. DHCP<\/span><\/li>\n
                              4. DNS<\/span><\/li>\n<\/ol>\n

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

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

                                Bidirectional Forwarding Detection is designed for rapid detection of forwarding-path failures. BFD can operate independently of the normal timers used by routing protocols and can notify supported protocols when a failure is detected. This allows routing protocols to begin convergence more quickly than they might using their standard detection mechanisms alone. NAT, DHCP, and DNS serve completely different purposes and do not provide rapid routing-failure detection. BFD is particularly useful in high-availability environments where fast failure detection is an important design requirement.<\/span><\/p>\n

                                Question 156<\/b><\/h3>\n

                                A network architect wants to provide a redundant default gateway for hosts without requiring hosts to know the physical address of the active router. Which technology provides this functionality?<\/b><\/p>\n

                                  \n
                                1. BGP<\/span><\/li>\n
                                2. HSRP<\/span><\/li>\n
                                3. OSPF<\/span><\/li>\n
                                4. VXLAN<\/span><\/li>\n<\/ol>\n

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

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

                                  HSRP provides a virtual default gateway address that can be shared by multiple routers. Hosts use the virtual gateway rather than depending on the physical address of a specific router. One router normally operates as the active router while another can take over if the active device fails. This allows gateway redundancy without requiring changes to host configurations. BGP and OSPF are routing protocols, while VXLAN provides network virtualization. HSRP is therefore appropriate when redundant first-hop gateway service is required.<\/span><\/p>\n

                                  Question 157<\/b><\/h3>\n

                                  A service provider wants to offer Layer 3 VPN connectivity to customers while using a shared MPLS backbone. Which technology combination is commonly associated with this architecture?<\/b><\/p>\n

                                    \n
                                  1. MPLS, VRF, and MP-BGP<\/span><\/li>\n
                                  2. STP, HSRP, and DHCP<\/span><\/li>\n
                                  3. NAT, DNS, and ARP<\/span><\/li>\n
                                  4. LACP, STP, and LLDP<\/span><\/li>\n<\/ol>\n

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

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

                                    MPLS Layer 3 VPN architectures commonly use VRFs to maintain separate customer routing tables, MPLS labels to transport VPN traffic across the provider backbone, and MP-BGP to distribute VPN route information between provider edge routers. Route distinguishers make VPN routes unique, while route targets control route import and export between VRFs. This combination provides scalable customer isolation over a shared provider infrastructure. The other options contain technologies that perform different functions and do not provide the complete control-plane and forwarding architecture required for MPLS Layer 3 VPN services.<\/span><\/p>\n

                                    Question 158<\/b><\/h3>\n

                                    A company wants to use redundant Internet connections from different providers and automatically remove an unavailable path from the forwarding decision. Which design approach is appropriate?<\/b><\/p>\n

                                      \n
                                    1. Dynamic routing with path monitoring<\/span><\/li>\n
                                    2. Static routing without tracking<\/span><\/li>\n
                                    3. Single default route only<\/span><\/li>\n
                                    4. Disabling routing updates<\/span><\/li>\n<\/ol>\n

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

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

                                      Dynamic routing combined with path monitoring can detect failures and remove unavailable paths from active forwarding decisions. Depending on the architecture, technologies such as BGP, IP SLA, BFD, or SD-WAN monitoring can be used to detect connectivity problems and trigger path changes. Static routing without tracking may continue forwarding traffic toward an unavailable next hop. A single default route does not provide path redundancy, and disabling routing updates prevents the network from adapting dynamically. A monitored dynamic approach provides better resilience for multiple Internet connections.<\/span><\/p>\n

                                      Question 159<\/b><\/h3>\n

                                      A network architect needs to control the routes advertised to a specific BGP neighbor while allowing other neighbors to receive different routes. Which approach provides this level of policy control?<\/b><\/p>\n

                                        \n
                                      1. Per-neighbor routing policy<\/span><\/li>\n
                                      2. Increasing the interface MTU<\/span><\/li>\n
                                      3. Enabling STP<\/span><\/li>\n
                                      4. Changing the router hostname<\/span><\/li>\n<\/ol>\n

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

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

                                        Per-neighbor routing policies allow an administrator to apply different import and export rules to individual BGP peers. Prefix lists, route maps, communities, and other policy mechanisms can be combined to determine which routes are advertised or accepted for a particular neighbor. This is especially important in multi-provider environments where different peers may require different routing policies. MTU settings affect packet transmission, STP controls Layer 2 topology, and the router hostname has no effect on BGP route advertisement. Per-neighbor policy therefore provides the required level of routing control.<\/span><\/p>\n

                                        Question 160<\/b><\/h3>\n

                                        An enterprise is designing a highly available network and wants to eliminate a single physical link as a point of failure between two critical devices. Which solution directly addresses this requirement?<\/b><\/p>\n

                                          \n
                                        1. Route summarization<\/span><\/li>\n
                                        2. Multiple physical links using link aggregation<\/span><\/li>\n
                                        3. Increasing the IP address space<\/span><\/li>\n
                                        4. Disabling dynamic routing<\/span><\/li>\n<\/ol>\n

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

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

                                          Using multiple physical links with link aggregation provides both redundancy and additional aggregate bandwidth between critical devices. If one member link fails, the logical connection can continue operating over the remaining links. LACP can be used to dynamically establish and maintain the link bundle. Route summarization reduces routing information and does not protect an individual physical connection. Increasing the IP address space has no direct effect on physical redundancy, while disabling dynamic routing can make failure recovery more difficult. Link aggregation is therefore a direct solution for removing a single physical link as a point of failure.<\/span><\/p>\n

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

                                          View Full Cisco CCDE 400-007 Exam Dumps and Practice Test Dumps.   Question 141 A network architect is designing a data center fabric that must support predictable latency and multiple equal-cost forwarding paths between endpoints. Which topology is most appropriate? Ring topology Hub-and-spoke topology Leaf-and-spine topology Daisy-chain topology Correct Answer: 3 Explanation A leaf-and-spine topology […]<\/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\/13665"}],"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=13665"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/13665\/revisions"}],"predecessor-version":[{"id":13690,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/13665\/revisions\/13690"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=13665"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=13665"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=13665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}