{"id":14805,"date":"2026-09-17T07:15:28","date_gmt":"2026-09-17T07:15:28","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=14805"},"modified":"2026-09-17T07:15:28","modified_gmt":"2026-09-17T07:15:28","slug":"cisco-ccnp-security-300-730-practice-test-questions-and-exam-dumps-part12-q221-q240","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/cisco-ccnp-security-300-730-practice-test-questions-and-exam-dumps-part12-q221-q240\/","title":{"rendered":"Cisco CCNP Security 300-730 Practice Test Questions and Exam Dumps Part12 Q221-Q240"},"content":{"rendered":"

<\/h1>\n

View Full <\/b>Cisco CCNP Security 300-730 Exam Dumps<\/b><\/a> and Practice Test Dumps.<\/b><\/h2>\n

 <\/p>\n

Question 221<\/b><\/h3>\n

Which Cisco VPN technology is based on IKEv2 and can use Virtual Tunnel Interfaces for secure routed connectivity?<\/b><\/p>\n

    \n
  1. FlexVPN<\/span><\/li>\n
  2. DHCP Snooping<\/span><\/li>\n
  3. Port Security<\/span><\/li>\n
  4. MACsec<\/span><\/li>\n<\/ol>\n

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

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

    FlexVPN is a Cisco VPN framework based on IKEv2 that supports flexible site-to-site and remote connectivity designs. It can use Virtual Tunnel Interfaces to provide route-based VPN connectivity, allowing routing protocols to operate across encrypted tunnels. FlexVPN can also support certificate-based authentication, dynamic tunnel establishment, and centralized or distributed architectures. DHCP Snooping, Port Security, and MACsec are different security technologies operating primarily at the LAN or Layer 2 level. FlexVPN is therefore particularly useful when an organization wants a flexible IKEv2-based VPN architecture that integrates closely with routing.<\/span><\/p>\n

    Question 222<\/b><\/h3>\n

    Which IKEv2 feature allows a VPN peer to use multiple authentication and configuration parameters through a reusable policy?<\/b><\/p>\n

      \n
    1. IKEv2 profile<\/span><\/li>\n
    2. NHRP map<\/span><\/li>\n
    3. DHCP pool<\/span><\/li>\n
    4. Security group tag<\/span><\/li>\n<\/ol>\n

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

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

      An IKEv2 profile provides a reusable set of parameters that controls aspects of IKEv2 peer matching, authentication, and related VPN behavior. Depending on the Cisco platform and configuration, an IKEv2 profile can define identity matching, authentication methods, local and remote authentication, and other policy information. This allows administrators to organize VPN configuration more efficiently, particularly in environments with multiple peers or authentication requirements. NHRP maps are associated with DMVPN, DHCP pools provide IP addressing, and Security Group Tags support identity-based segmentation. The IKEv2 profile is therefore an important component of structured IKEv2 VPN configuration.<\/span><\/p>\n

      Question 223<\/b><\/h3>\n

      Which IKEv2 component defines acceptable encryption, integrity, and Diffie-Hellman parameters for negotiation?<\/b><\/p>\n

        \n
      1. IKEv2 keyring<\/span><\/li>\n
      2. IKEv2 proposal<\/span><\/li>\n
      3. Tunnel group<\/span><\/li>\n
      4. Crypto ACL<\/span><\/li>\n<\/ol>\n

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

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

        An IKEv2 proposal defines the cryptographic algorithms and parameters that an IKEv2 peer is willing to use during negotiation. These can include encryption algorithms, integrity algorithms, and Diffie-Hellman groups, depending on the Cisco implementation. During negotiation, the peers must identify a compatible set of parameters before the IKE security association can be established. An IKEv2 keyring generally stores authentication credentials or peer information, while tunnel groups and crypto ACLs serve different VPN configuration roles. The IKEv2 proposal therefore provides the cryptographic capabilities offered during the initial VPN negotiation.<\/span><\/p>\n

        Question 224<\/b><\/h3>\n

        What is the primary purpose of an IKEv2 keyring?<\/b><\/p>\n

          \n
        1. Store authentication credentials or peer-specific key information<\/span><\/li>\n
        2. Encrypt Ethernet frames<\/span><\/li>\n
        3. Assign VLANs to users<\/span><\/li>\n
        4. Resolve DNS queries<\/span><\/li>\n<\/ol>\n

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

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

          An IKEv2 keyring can be used to store authentication credentials and peer-specific key information required during IKEv2 authentication. In configurations using pre-shared keys, the keyring can associate a shared secret with a particular peer or identity. This provides a structured way to manage authentication information rather than embedding credentials throughout unrelated configuration sections. Ethernet frame encryption is provided by technologies such as MACsec, VLAN assignment can be performed through network-access policies, and DNS resolution is unrelated to IKEv2 keyrings. Keyrings therefore help organize authentication credentials used by IKEv2 VPN peers.<\/span><\/p>\n

          Question 225<\/b><\/h3>\n

          Which VPN design uses a logical tunnel interface and routing rather than relying primarily on a crypto ACL to identify protected traffic?<\/b><\/p>\n

            \n
          1. Route-based VPN<\/span><\/li>\n
          2. Traditional policy-based VPN<\/span><\/li>\n
          3. Port-based switching<\/span><\/li>\n
          4. DNS-based VPN<\/span><\/li>\n<\/ol>\n

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

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

            A route-based VPN uses a logical tunnel interface, such as a Virtual Tunnel Interface, and relies on routing to determine which traffic enters the VPN. This differs from traditional policy-based IPsec, where crypto ACLs commonly define the interesting traffic that should be protected. Route-based designs can simplify configurations involving dynamic routing, multiple networks, and changing routes. They also provide a more interface-oriented model because the VPN tunnel appears as a Layer 3 logical interface. Port-based switching and DNS-based VPN are not equivalent IPsec architectural models. Route-based VPNs are therefore useful for scalable routed VPN environments.<\/span><\/p>\n

            Question 226<\/b><\/h3>\n

            Which benefit is commonly associated with route-based VPNs compared with traditional policy-based VPNs?<\/b><\/p>\n

              \n
            1. Easier integration with dynamic routing<\/span><\/li>\n
            2. Elimination of encryption<\/span><\/li>\n
            3. Removal of all routing requirements<\/span><\/li>\n
            4. Automatic replacement of IKE with DHCP<\/span><\/li>\n<\/ol>\n

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

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

              One major benefit of route-based VPNs is their integration with routing protocols and routing tables. Because a Virtual Tunnel Interface behaves like a logical Layer 3 interface, routing protocols can potentially operate across the encrypted tunnel. This can simplify deployments where remote networks change frequently or where dynamic routing is required. Route-based VPNs do not eliminate routing, and they still rely on IKE and IPsec for secure tunnel establishment and traffic protection. DHCP does not replace IKE. The ability to integrate VPN connectivity with dynamic routing is therefore an important architectural advantage.<\/span><\/p>\n

              Question 227<\/b><\/h3>\n

              Which component identifies the remote VPN peer in a traditional site-to-site IPsec configuration?<\/b><\/p>\n

                \n
              1. Crypto map peer definition<\/span><\/li>\n
              2. DHCP binding<\/span><\/li>\n
              3. DNS record<\/span><\/li>\n
              4. NHRP redirect<\/span><\/li>\n<\/ol>\n

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

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

                In a traditional policy-based IPsec configuration, the crypto map can identify the remote VPN peer along with the traffic to protect and the associated IPsec policy. The peer address tells the local device where the IPsec tunnel should be established. Other crypto-map parameters can reference security settings and the ACL that identifies interesting traffic. DHCP bindings associate IP addresses with clients, DNS records resolve names, and NHRP redirects are associated with DMVPN Phase 3 behavior. The crypto map therefore plays a central role in identifying the remote IPsec peer in traditional policy-based VPN configurations.<\/span><\/p>\n

                Question 228<\/b><\/h3>\n

                Which IPsec configuration element defines the encryption and integrity algorithms used to protect data in traditional Cisco IPsec?<\/b><\/p>\n

                  \n
                1. Transform set<\/span><\/li>\n
                2. DHCP pool<\/span><\/li>\n
                3. NHRP registration<\/span><\/li>\n
                4. AAA method list<\/span><\/li>\n<\/ol>\n

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

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

                  A transform set defines the IPsec security protocols and cryptographic algorithms used to protect data in traditional Cisco policy-based IPsec configurations. Depending on the platform and configuration, a transform set can specify ESP encryption and integrity mechanisms. The selected transform set must be compatible with the remote peer for the IPsec security association to be established successfully. DHCP pools provide IP addressing, NHRP registrations support DMVPN, and AAA method lists control authentication methods. The transform set therefore defines the data-plane protection parameters used by traditional IPsec configurations.<\/span><\/p>\n

                  Question 229<\/b><\/h3>\n

                  What is the main purpose of an IPsec Security Association?<\/b><\/p>\n

                    \n
                  1. Define negotiated security parameters and keying information<\/span><\/li>\n
                  2. Assign usernames to VPN clients<\/span><\/li>\n
                  3. Resolve hostnames<\/span><\/li>\n
                  4. Create switch VLANs<\/span><\/li>\n<\/ol>\n

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

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

                    An IPsec Security Association defines the security parameters used to protect traffic between VPN peers. It includes information associated with negotiated algorithms, keys, security protocols, and other parameters required for IPsec processing. Security associations are established through IKE negotiation or configured through the applicable VPN framework. They provide the state required for encrypting and decrypting traffic. Usernames, DNS resolution, and VLAN creation are handled by different technologies. Understanding Security Associations is important when troubleshooting IPsec because a successful IKE relationship and valid IPsec SAs are both necessary for protected data traffic.<\/span><\/p>\n

                    Question 230<\/b><\/h3>\n

                    Which IPsec feature uses sequence numbers and a replay window to protect against replayed packets?<\/b><\/p>\n

                      \n
                    1. Anti-replay protection<\/span><\/li>\n
                    2. NAT exemption<\/span><\/li>\n
                    3. Application Control<\/span><\/li>\n
                    4. URL filtering<\/span><\/li>\n<\/ol>\n

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

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

                      IPsec anti-replay protection uses sequence numbers and a replay window to help detect packets that are duplicated or received outside the acceptable sequence range. An attacker could otherwise capture a legitimate encrypted packet and attempt to transmit it again. The receiving device checks the sequence number against its replay window and can reject packets that appear to be replays. NAT exemption serves a different purpose by preventing specified traffic from translation, while Application Control and URL filtering operate at higher security-policy layers. Anti-replay protection is therefore an important part of IPsec data-plane security.<\/span><\/p>\n

                      Question 231<\/b><\/h3>\n

                      Which IKEv2 exchange is normally completed before the IKE_AUTH exchange?<\/b><\/p>\n

                        \n
                      1. CREATE_CHILD_SA<\/span><\/li>\n
                      2. IKE_SA_INIT<\/span><\/li>\n
                      3. INFORMATIONAL<\/span><\/li>\n
                      4. DELETE<\/span><\/li>\n<\/ol>\n

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

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

                        IKE_SA_INIT normally occurs before IKE_AUTH during the establishment of an IKEv2 VPN session. IKE_SA_INIT negotiates initial cryptographic parameters and performs the Diffie-Hellman exchange to establish shared keying material. After this stage, IKE_AUTH authenticates the peers and establishes the first Child SA for IPsec traffic. CREATE_CHILD_SA is generally used later for additional Child SAs or rekey operations, while INFORMATIONAL messages carry control and status information. DELETE is used to terminate security associations. Knowing this sequence is useful when diagnosing where IKEv2 negotiation is failing.<\/span><\/p>\n

                        Question 232<\/b><\/h3>\n

                        Which IKEv2 exchange is commonly used when an existing Child SA needs to be rekeyed?<\/b><\/p>\n

                          \n
                        1. IKE_SA_INIT<\/span><\/li>\n
                        2. IKE_AUTH<\/span><\/li>\n
                        3. CREATE_CHILD_SA<\/span><\/li>\n
                        4. NHRP Registration<\/span><\/li>\n<\/ol>\n

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

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

                          CREATE_CHILD_SA is used in IKEv2 to create additional Child Security Associations and to rekey existing Child SAs. Rekeying allows the VPN to replace cryptographic material before the current SA reaches the end of its lifetime. This helps maintain continuous secure communication while refreshing keys and other security parameters. IKE_SA_INIT handles the initial IKE negotiation, while IKE_AUTH performs peer authentication and establishes the first Child SA. NHRP Registration belongs to DMVPN rather than IKEv2. CREATE_CHILD_SA is therefore important for ongoing VPN security and lifecycle management.<\/span><\/p>\n

                          Question 233<\/b><\/h3>\n

                          Which VPN authentication method avoids manually configuring a unique shared secret between every pair of devices by using PKI?<\/b><\/p>\n

                            \n
                          1. Certificate-based authentication<\/span><\/li>\n
                          2. Static ARP<\/span><\/li>\n
                          3. DHCP authentication<\/span><\/li>\n
                          4. MAC address filtering<\/span><\/li>\n<\/ol>\n

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

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

                            Certificate-based authentication uses PKI to establish trust between VPN peers. Each device can receive a certificate signed by a trusted Certificate Authority, allowing peers to validate identities without maintaining a separate manually configured shared secret for every VPN relationship. This approach can significantly simplify large-scale deployments. Certificate lifecycle management, including enrollment and revocation checking, remains important. Static ARP, DHCP authentication, and MAC address filtering do not provide a scalable cryptographic peer-authentication mechanism. PKI-based authentication is therefore commonly selected when an organization needs to support a large number of VPN peers.<\/span><\/p>\n

                            Question 234<\/b><\/h3>\n

                            Which certificate-related mechanism can be used to determine whether a certificate has been revoked without downloading a complete revocation list?<\/b><\/p>\n

                              \n
                            1. OCSP<\/span><\/li>\n
                            2. CRL<\/span><\/li>\n
                            3. SCEP<\/span><\/li>\n
                            4. NHRP<\/span><\/li>\n<\/ol>\n

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

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

                              OCSP allows a device to query an online responder for the status of a specific digital certificate. This differs from a Certificate Revocation List, which contains a periodically published list of revoked certificates that must be retrieved and processed. OCSP can therefore provide a more targeted status check for an individual certificate. SCEP is primarily used for certificate enrollment and provisioning, while NHRP supports dynamic address resolution in DMVPN. OCSP is especially useful when timely certificate status information is required during certificate-based VPN authentication or other PKI-dependent security operations.<\/span><\/p>\n

                              Question 235<\/b><\/h3>\n

                              Which security technology can authenticate administrators and provide command-level authorization on Cisco network devices?<\/b><\/p>\n

                                \n
                              1. TACACS+<\/span><\/li>\n
                              2. NHRP<\/span><\/li>\n
                              3. SCEP<\/span><\/li>\n
                              4. ESP<\/span><\/li>\n<\/ol>\n

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

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

                                TACACS+ is commonly used for centralized administrative AAA on Cisco network devices. It supports authentication of administrators, authorization of permitted actions, and accounting of administrative activity. One important capability is granular command authorization, which allows organizations to control which commands individual administrators can execute. NHRP is associated with DMVPN, SCEP handles certificate enrollment, and ESP protects IPsec traffic. TACACS+ therefore provides a suitable framework when an organization requires centralized control and auditing of administrative access to routers, switches, firewalls, and other network devices.<\/span><\/p>\n

                                Question 236<\/b><\/h3>\n

                                Which AAA function determines what actions or resources an authenticated administrator is permitted to access?<\/b><\/p>\n

                                  \n
                                1. Authentication<\/span><\/li>\n
                                2. Accounting<\/span><\/li>\n
                                3. Authorization<\/span><\/li>\n
                                4. Encryption<\/span><\/li>\n<\/ol>\n

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

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

                                  Authorization determines what an authenticated user or administrator is allowed to do. In an AAA framework, authentication verifies identity, authorization determines permissions, and accounting records activity. For example, after an administrator successfully authenticates, authorization can determine whether that person may execute specific configuration commands. Accounting can then record actions or session information for auditing purposes. Encryption is a security mechanism rather than one of the three AAA functions. Understanding the distinction between authentication and authorization is important when configuring centralized administrative access controls with technologies such as TACACS+.<\/span><\/p>\n

                                  Question 237<\/b><\/h3>\n

                                  Which Cisco solution can centrally apply identity and device-based network access policies?<\/b><\/p>\n

                                    \n
                                  1. Cisco ISE<\/span><\/li>\n
                                  2. Cisco Umbrella<\/span><\/li>\n
                                  3. Cisco Secure Client<\/span><\/li>\n
                                  4. Cisco Secure Firewall Management Center<\/span><\/li>\n<\/ol>\n

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

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

                                    Cisco Identity Services Engine provides centralized identity and device-based network access policy enforcement. ISE can authenticate users and endpoints, perform device profiling, apply authorization policies, and integrate with technologies such as 802.1X and Cisco TrustSec. It can use information about users, devices, location, and other context to make network-access decisions. Umbrella focuses primarily on cloud-delivered security and DNS-layer protection, Secure Client provides endpoint capabilities, and FMC manages supported firewall infrastructure. ISE is therefore the Cisco platform most directly associated with centralized identity-aware network access control.<\/span><\/p>\n

                                    Question 238<\/b><\/h3>\n

                                    Which technology can protect Ethernet frames at Layer 2 using cryptographic security?<\/b><\/p>\n

                                      \n
                                    1. MACsec<\/span><\/li>\n
                                    2. IPsec<\/span><\/li>\n
                                    3. NHRP<\/span><\/li>\n
                                    4. SCEP<\/span><\/li>\n<\/ol>\n

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

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

                                      MACsec, or Media Access Control Security, provides cryptographic protection for Ethernet frames at Layer 2. It can provide confidentiality, integrity, and authentication for supported Layer 2 traffic between connected devices. MACsec is different from IPsec, which operates at the IP layer and is commonly used for routed VPN connectivity. NHRP supports address resolution in DMVPN, while SCEP supports certificate enrollment. MACsec can be useful when organizations need to protect traffic across Ethernet links within campus or data-center environments. Its Layer 2 operation distinguishes it from traditional IPsec VPN technologies.<\/span><\/p>\n

                                      Question 239<\/b><\/h3>\n

                                      Which Cisco security feature can prevent a rogue DHCP server from responding to clients on a switched network?<\/b><\/p>\n

                                        \n
                                      1. DHCP Snooping<\/span><\/li>\n
                                      2. Dynamic ARP Inspection<\/span><\/li>\n
                                      3. IP Source Guard<\/span><\/li>\n
                                      4. Port Security<\/span><\/li>\n<\/ol>\n

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

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

                                        DHCP Snooping is designed to protect switched networks from unauthorized or rogue DHCP servers. The switch can classify interfaces as trusted or untrusted and allow legitimate DHCP server responses only through trusted interfaces. DHCP Snooping also builds a binding database containing information such as IP address, MAC address, VLAN, and interface. This database can subsequently support other security features such as Dynamic ARP Inspection and IP Source Guard. DAI validates ARP information, IP Source Guard validates source addresses, and Port Security controls MAC addresses. DHCP Snooping specifically addresses unauthorized DHCP behavior.<\/span><\/p>\n

                                        Question 240<\/b><\/h3>\n

                                        Which feature uses DHCP Snooping bindings to validate the source IP address of traffic entering a switch port?<\/b><\/p>\n

                                          \n
                                        1. IP Source Guard<\/span><\/li>\n
                                        2. Dynamic ARP Inspection<\/span><\/li>\n
                                        3. MACsec<\/span><\/li>\n
                                        4. URL Filtering<\/span><\/li>\n<\/ol>\n

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

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

                                          IP Source Guard uses information learned through DHCP Snooping to validate the source IP address of traffic entering an untrusted switch interface. The switch can compare the packet’s source information against the DHCP Snooping binding database and drop traffic that does not match an authorized binding. This helps prevent certain IP address spoofing attacks on access networks. Dynamic ARP Inspection uses DHCP Snooping information to validate ARP packets, while MACsec protects Ethernet frames cryptographically and URL Filtering controls web destinations. IP Source Guard therefore provides source-address validation at the switch-port level.<\/span><\/p>\n

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

                                          View Full Cisco CCNP Security 300-730 Exam Dumps and Practice Test Dumps.   Question 221 Which Cisco VPN technology is based on IKEv2 and can use Virtual Tunnel Interfaces for secure routed connectivity? FlexVPN DHCP Snooping Port Security MACsec Correct Answer: 1 Explanation FlexVPN is a Cisco VPN framework based on IKEv2 that supports flexible […]<\/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\/14805"}],"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=14805"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/14805\/revisions"}],"predecessor-version":[{"id":14818,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/14805\/revisions\/14818"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=14805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=14805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=14805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}