{"id":12908,"date":"2026-09-15T13:13:58","date_gmt":"2026-09-15T13:13:58","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=12908"},"modified":"2026-09-15T13:13:58","modified_gmt":"2026-09-15T13:13:58","slug":"cisco-ccie-350-401-practice-test-questions-and-exam-dumps-part3-q41-60","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/cisco-ccie-350-401-practice-test-questions-and-exam-dumps-part3-q41-60\/","title":{"rendered":"Cisco CCIE 350-401 Practice Test Questions and Exam Dumps Part3 Q41-60"},"content":{"rendered":"

View Full Cisco 350-401 Exam Dumps<\/a> and Practice Test Dumps<\/b><\/h2>\n

 <\/p>\n

Question 41<\/b><\/h3>\n

Which protocol is used to exchange routing information within an OSPF autonomous system?<\/b><\/p>\n

    \n
  1. OSPF<\/span><\/li>\n
  2. BGP<\/span><\/li>\n
  3. FTP<\/span><\/li>\n
  4. SNMP<\/span><\/li>\n<\/ol>\n

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

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

    OSPF is an interior gateway protocol designed to exchange routing information within an autonomous system. It is a link-state protocol that builds a topology database and uses the Shortest Path First algorithm to calculate routes. OSPF supports hierarchical designs using areas, with Area 0 serving as the backbone. It can provide fast convergence and supports features such as authentication, route summarization, and equal-cost multipath routing. OSPF is widely used in enterprise networks where scalable and dynamic internal routing is required.<\/span><\/p>\n

    Question 42<\/b><\/h3>\n

    Which Cisco command displays the status and IP address information of Layer 3 interfaces?<\/b><\/p>\n

      \n
    1. show vlan<\/span><\/li>\n
    2. show ip interface brief<\/span><\/li>\n
    3. show mac address-table<\/span><\/li>\n
    4. show spanning-tree<\/span><\/li>\n<\/ol>\n

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

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

      The <\/span>show ip interface brief<\/span> command provides a concise overview of interfaces, including interface names, assigned IP addresses, and their administrative and operational status. It is one of the most useful commands for quickly identifying whether interfaces are up or down and whether they have appropriate Layer 3 addressing. The command does not provide detailed interface statistics, but its compact output makes it valuable during troubleshooting. Other commands focus on VLANs, MAC addresses, or spanning-tree information rather than Layer 3 interface status.<\/span><\/p>\n

      Question 43<\/b><\/h3>\n

      What is the main purpose of a default route?<\/b><\/p>\n

        \n
      1. To provide a path when no more specific route exists<\/span><\/li>\n
      2. To prevent all routing updates<\/span><\/li>\n
      3. To assign addresses to hosts<\/span><\/li>\n
      4. To create VLANs automatically<\/span><\/li>\n<\/ol>\n

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

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

        A default route provides a forwarding path for destinations that do not have a more specific matching route in the routing table. In IPv4, it is commonly represented as 0.0.0.0\/0. Default routes are frequently configured on enterprise routers toward an Internet service provider or another upstream device. When multiple specific routes exist, those routes are preferred over the default route because they provide more specific matches. Proper default-route configuration can simplify routing tables while still providing connectivity to unknown destinations.<\/span><\/p>\n

        Question 44<\/b><\/h3>\n

        Which protocol is commonly used to provide centralized authentication, authorization, and accounting for network access?<\/b><\/p>\n

          \n
        1. RSTP<\/span><\/li>\n
        2. OSPF<\/span><\/li>\n
        3. RADIUS<\/span><\/li>\n
        4. CDP<\/span><\/li>\n<\/ol>\n

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

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

          RADIUS provides centralized authentication, authorization, and accounting services for network access. A network device can forward user authentication requests to a centralized RADIUS server instead of maintaining individual credentials locally. This approach improves administrative consistency and allows access policies to be managed centrally. RADIUS is commonly used for wireless access, VPN authentication, and other network access services. Accounting capabilities can record session information for monitoring and auditing. Centralized authentication is especially useful in larger environments where managing local credentials across many devices would be difficult.<\/span><\/p>\n

          Question 45<\/b><\/h3>\n

          Which protocol provides rapid spanning-tree convergence compared with traditional STP?<\/b><\/p>\n

            \n
          1. RSTP<\/span><\/li>\n
          2. RIP<\/span><\/li>\n
          3. ARP<\/span><\/li>\n
          4. BGP<\/span><\/li>\n<\/ol>\n

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

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

            Rapid Spanning Tree Protocol (RSTP), defined by IEEE 802.1w, improves convergence compared with traditional 802.1D Spanning Tree Protocol. RSTP introduces faster state transitions and additional port roles and mechanisms that allow the network to react more quickly to topology changes. It can significantly reduce the time required to restore connectivity after a link or device failure. RSTP maintains the fundamental purpose of preventing Layer 2 loops while providing faster recovery. Cisco networks can also use Rapid PVST+ for per-VLAN rapid spanning-tree operation.<\/span><\/p>\n

            Question 46<\/b><\/h3>\n

            A router has two routes to the same destination. Which route is generally preferred if one has a longer prefix match?<\/b><\/p>\n

              \n
            1. The route with the higher metric<\/span><\/li>\n
            2. The route with the longer prefix<\/span><\/li>\n
            3. The route learned first<\/span><\/li>\n
            4. The route with the lower bandwidth<\/span><\/li>\n<\/ol>\n

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

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

              Routers generally prefer the route with the longest prefix match because it represents the most specific route to the destination. For example, a route for 192.168.10.0\/24 is more specific than a route for 192.168.0.0\/16 and will therefore be preferred for a destination within the \/24 network. This process occurs before comparing administrative distance and routing metrics between competing routes. Understanding longest-prefix matching is fundamental to predicting forwarding behavior and troubleshooting unexpected routing decisions.<\/span><\/p>\n

              Question 47<\/b><\/h3>\n

              Which protocol maps an IPv4 address to a MAC address on a local network?<\/b><\/p>\n

                \n
              1. DHCP<\/span><\/li>\n
              2. DNS<\/span><\/li>\n
              3. ARP<\/span><\/li>\n
              4. NTP<\/span><\/li>\n<\/ol>\n

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

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

                Address Resolution Protocol (ARP) maps an IPv4 address to the corresponding MAC address on a local network. When a host needs to communicate with another device on the same subnet but does not know its MAC address, it sends an ARP request. The device using that IPv4 address responds with its MAC address, allowing the sender to construct the Ethernet frame. ARP information is stored temporarily in an ARP cache. IPv6 uses Neighbor Discovery Protocol rather than traditional ARP for similar address-resolution functions.<\/span><\/p>\n

                Question 48<\/b><\/h3>\n

                Which BGP attribute is normally preferred when selecting between routes based on the shortest autonomous system path?<\/b><\/p>\n

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

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

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

                  The AS Path attribute records the autonomous systems through which a BGP route has passed. In general BGP route selection, a shorter AS Path is preferred over a longer one when earlier decision factors do not determine the selection. The AS Path also helps prevent routing loops because a BGP router can reject routes containing its own autonomous system number. Local Preference and Weight are used to influence route selection within an autonomous system, while MED can provide information to neighboring autonomous systems about preferred entry points.<\/span><\/p>\n

                  Question 49<\/b><\/h3>\n

                  Which technology allows a switch to dynamically learn VLAN information from a central server in older Cisco environments?<\/b><\/p>\n

                    \n
                  1. VTP<\/span><\/li>\n
                  2. HSRP<\/span><\/li>\n
                  3. VRF<\/span><\/li>\n
                  4. GRE<\/span><\/li>\n<\/ol>\n

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

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

                    VLAN Trunking Protocol (VTP) is a Cisco proprietary protocol that can distribute VLAN configuration information among switches within a VTP domain. In traditional VTP deployments, a server can advertise VLAN changes to participating clients over trunk links. VTP can simplify VLAN administration but must be carefully controlled because incorrect configuration can propagate unwanted VLAN changes. Modern network designs often favor more controlled VLAN management approaches. HSRP provides gateway redundancy, VRF provides separate routing tables, and GRE creates tunnels rather than distributing VLAN databases.<\/span><\/p>\n

                    Question 50<\/b><\/h3>\n

                    Which technology is commonly used to create a logical Layer 3 interface for a VLAN on a multilayer switch?<\/b><\/p>\n

                      \n
                    1. Loopback<\/span><\/li>\n
                    2. SVI<\/span><\/li>\n
                    3. Console interface<\/span><\/li>\n
                    4. Tunnel interface<\/span><\/li>\n<\/ol>\n

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

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

                      A Switched Virtual Interface (SVI) is a logical Layer 3 interface associated with a VLAN on a multilayer switch. An SVI can be assigned an IP address and used as the default gateway for devices within that VLAN. SVIs are also commonly used to perform inter-VLAN routing on Layer 3 switches. Loopback interfaces provide stable logical addresses independent of physical interfaces, while tunnel interfaces are used for logical tunnels. Proper SVI configuration requires the associated VLAN to exist and appropriate Layer 3 routing functionality to be enabled.<\/span><\/p>\n

                      Question 51<\/b><\/h3>\n

                      Which routing protocol is classified as a distance-vector protocol?<\/b><\/p>\n

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

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

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

                        Routing Information Protocol (RIP) is a distance-vector routing protocol that uses hop count as its primary routing metric. RIP has a maximum usable hop-count value of 15, making it unsuitable for large networks. Routers periodically exchange routing information with neighboring routers. OSPF and IS-IS are link-state protocols, while BGP is a path-vector protocol. Although RIP is simple to configure, its scalability and convergence characteristics are generally inferior to modern enterprise routing protocols such as OSPF and EIGRP.<\/span><\/p>\n

                        Question 52<\/b><\/h3>\n

                        Which IPv6 address prefix is used for link-local addresses?<\/b><\/p>\n

                          \n
                        1. FE80::\/10<\/span><\/li>\n
                        2. 2000::\/3<\/span><\/li>\n
                        3. FF00::\/8<\/span><\/li>\n
                        4. FC00::\/7<\/span><\/li>\n<\/ol>\n

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

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

                          IPv6 link-local addresses use the FE80::\/10 prefix. These addresses are automatically generated or configured on IPv6-enabled interfaces and are used for communication within the local network segment. Link-local addresses are essential for IPv6 neighbor discovery and routing protocol operations. They are not intended to be routed across network boundaries. The 2000::\/3 range is commonly associated with global unicast addresses, FF00::\/8 is used for multicast addresses, and FC00::\/7 is reserved for unique local addresses.<\/span><\/p>\n

                          Question 53<\/b><\/h3>\n

                          Which QoS technique temporarily stores packets to smooth traffic transmission?<\/b><\/p>\n

                            \n
                          1. Policing<\/span><\/li>\n
                          2. Shaping<\/span><\/li>\n
                          3. Classification<\/span><\/li>\n
                          4. Marking<\/span><\/li>\n<\/ol>\n

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

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

                            Traffic shaping controls the rate of traffic transmission by buffering packets and releasing them at a controlled rate. This can smooth bursts and help match traffic to the capacity of a downstream link. Unlike policing, which may drop or remark traffic that exceeds a configured rate, shaping generally delays excess traffic rather than immediately discarding it. Classification identifies traffic types, while marking assigns values such as DSCP. Traffic shaping is particularly useful on slower WAN links where controlling bursts can improve overall network behavior.<\/span><\/p>\n

                            Question 54<\/b><\/h3>\n

                            Which protocol is commonly used to securely manage network devices through a command-line interface?<\/b><\/p>\n

                              \n
                            1. SSH<\/span><\/li>\n
                            2. Telnet<\/span><\/li>\n
                            3. HTTP<\/span><\/li>\n
                            4. TFTP<\/span><\/li>\n<\/ol>\n

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

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

                              SSH provides secure, encrypted command-line access to network devices. It protects authentication credentials and management traffic from being transmitted as readable information across the network. SSH normally operates over TCP port 22 and can use public-key cryptography for secure session establishment. Telnet provides similar remote CLI functionality but does not encrypt the session, making it unsuitable for secure management across untrusted networks. Network administrators should use SSH along with strong authentication, appropriate access controls, and management-plane security policies.<\/span><\/p>\n

                              Question 55<\/b><\/h3>\n

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

                                \n
                              1. Provide a stable logical interface<\/span><\/li>\n
                              2. Replace all physical interfaces<\/span><\/li>\n
                              3. Disable routing protocols<\/span><\/li>\n
                              4. Create an Ethernet broadcast domain<\/span><\/li>\n<\/ol>\n

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

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

                                A loopback interface is a logical interface that remains operational as long as the router itself is functioning, independent of the state of a particular physical interface. It is often used as a stable router identifier, management address, or source address for routing protocols and services. For example, OSPF and BGP designs frequently use loopback addresses because they provide consistent endpoints. Loopback interfaces do not create Ethernet broadcast domains and do not replace physical interfaces. Their stability makes them valuable in network design and troubleshooting.<\/span><\/p>\n

                                Question 56<\/b><\/h3>\n

                                Which protocol can provide a secure alternative to traditional SNMP versions for network management?<\/b><\/p>\n

                                  \n
                                1. SNMPv3<\/span><\/li>\n
                                2. SNMPv1<\/span><\/li>\n
                                3. SNMPv2c<\/span><\/li>\n
                                4. CDP<\/span><\/li>\n<\/ol>\n

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

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

                                  SNMPv3 provides enhanced security features compared with earlier SNMP versions. It supports authentication and privacy mechanisms that can protect management information and help verify the identity of communicating entities. Earlier versions such as SNMPv1 and SNMPv2c commonly rely on community strings and do not provide equivalent built-in security capabilities. SNMPv3 is therefore preferred when secure network monitoring and management are required. Administrators should still configure strong credentials, appropriate access controls, and suitable encryption policies to protect management traffic.<\/span><\/p>\n

                                  Question 57<\/b><\/h3>\n

                                  Which protocol is used to negotiate link aggregation dynamically between compatible devices?<\/b><\/p>\n

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

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

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

                                    Link Aggregation Control Protocol (LACP) dynamically negotiates and manages the bundling of multiple physical links into a logical EtherChannel. LACP is standardized as IEEE 802.3ad and allows compatible devices to establish and maintain link aggregation based on negotiated parameters. Using multiple links can increase available bandwidth and provide redundancy if one physical link fails. ARP resolves IPv4 addresses to MAC addresses, OSPF provides routing, and VRRP provides first-hop redundancy. LACP is therefore the appropriate protocol for dynamic link aggregation.<\/span><\/p>\n

                                    Question 58<\/b><\/h3>\n

                                    Which Cisco technology provides gateway redundancy using an active and standby router model?<\/b><\/p>\n

                                      \n
                                    1. HSRP<\/span><\/li>\n
                                    2. STP<\/span><\/li>\n
                                    3. LACP<\/span><\/li>\n
                                    4. VXLAN<\/span><\/li>\n<\/ol>\n

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

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

                                      Hot Standby Router Protocol (HSRP) provides first-hop gateway redundancy using an active router and one or more standby routers. Hosts are configured to use a virtual IP address as their default gateway. If the active router becomes unavailable, an eligible standby router can assume the active role and continue forwarding traffic using the virtual gateway address. This reduces the impact of gateway failures without requiring hosts to change their default-gateway configuration. HSRP is widely used in enterprise networks where reliable default-gateway availability is required.<\/span><\/p>\n

                                      Question 59<\/b><\/h3>\n

                                      Which network architecture uses a centralized control plane to manage forwarding devices through a programmable interface?<\/b><\/p>\n

                                        \n
                                      1. Traditional hub-and-spoke only<\/span><\/li>\n
                                      2. SDN<\/span><\/li>\n
                                      3. Static routing<\/span><\/li>\n
                                      4. Port security<\/span><\/li>\n<\/ol>\n

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

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

                                        Software-Defined Networking (SDN) separates or centralizes network control functions so that network behavior can be managed programmatically through centralized controllers and APIs. Instead of configuring every forwarding device independently, an SDN controller can provide centralized policy and automation capabilities. This approach can improve consistency, programmability, and operational visibility. The exact architecture varies by implementation, but the separation between control and forwarding functions is a fundamental SDN concept. SDN technologies are commonly used in modern enterprise, data center, and service-provider environments.<\/span><\/p>\n

                                        Question 60<\/b><\/h3>\n

                                        Which command is commonly used to verify OSPF neighbor relationships on a Cisco router?<\/b><\/p>\n

                                          \n
                                        1. show ip ospf neighbor<\/span><\/li>\n
                                        2. show ip bgp<\/span><\/li>\n
                                        3. show spanning-tree<\/span><\/li>\n
                                        4. show vlan brief<\/span><\/li>\n<\/ol>\n

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

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

                                          The <\/span>show ip ospf neighbor<\/span> command displays OSPF neighbor information and helps verify whether OSPF adjacencies have formed correctly. The output can include the neighbor router ID, state, priority, dead timer, and connected interface. It is particularly useful when troubleshooting OSPF adjacency problems caused by mismatched areas, timers, network types, authentication, or addressing. <\/span>show ip bgp<\/span> is used for BGP information, while spanning-tree and VLAN commands provide Layer 2 information. Checking neighbor state is an important step in OSPF troubleshooting.<\/span><\/p>\n

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

                                          View Full Cisco 350-401 Exam Dumps and Practice Test Dumps   Question 41 Which protocol is used to exchange routing information within an OSPF autonomous system? OSPF BGP FTP SNMP Correct Answer: 1 Explanation OSPF is an interior gateway protocol designed to exchange routing information within an autonomous system. It is a link-state protocol that […]<\/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\/12908"}],"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=12908"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/12908\/revisions"}],"predecessor-version":[{"id":12943,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/12908\/revisions\/12943"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=12908"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=12908"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=12908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}