Cisco Cisco 352-011 PDF Cisco Cisco 352-011 PDF Questions Available Here at: https://www.certification-exam.com/en/dumps/cisco-exam/352-011-dumps/quiz.html Enrolling now you will get access to 245 questions in a unique set of Cisco 352-011 Question 1 The cloud service provider CSP is planning to launch five data centers in Egypt, United Arab Emirates, Saudi Arabia, Qatar and Turkey. CSP is looking for VLAN extension and DCIs between these five data centers to allow for software replication, where original and backup VMs must be on the same subnet. Which tunneling technology must they use? Options: A. VPLS B. IPsec VPN C. VPWS D. L2TPv3 Answer: A Explanation: The correct answer is A. VPLS. The key requirement in the question is that the CSP wants VLAN extension and data center interconnection between five sites, with the original and backup virtual machines remaining on the same subnet. That means they need a Layer 2 service extension across multiple data centers. Why A. VPLS is correct: - VPLS stands for Virtual Private LAN Service. - It creates a multipoint Layer 2 bridged network over an IP/MPLS core. - This allows multiple remote data centers to behave as if they are part of the same Ethernet broadcast domain. - Since the VMs must stay on the same subnet, Layer 2 extension is required, which VPLS provides. - It is especially suitable when connecting more than two sites, which matches the five data centers in the scenario. Why the other options are not correct: B. IPsec VPN - IPsec VPN provides secure Layer 3 encrypted tunnels. Cisco Cisco 352-011 PDF https://www.certification-exam.com/ - It connects IP networks, but it does not extend VLANs or preserve the same Ethernet broadcast domain. - It is used for secure site-to-site connectivity, not for same-subnet VM replication across data centers. C. VPWS - VPWS stands for Virtual Private Wire Service. - It provides point-to-point Layer 2 connectivity. - It is suitable for connecting two sites only, not multiple data centers in a full multipoint topology. - Since this scenario involves five data centers, VPWS is not the best fit. D. L2TPv3 - L2TPv3 can carry Layer 2 frames over IP networks. - While it can be used for Layer 2 tunneling, it is typically used for simpler point-to-point or specific encapsulation scenarios. - It is not the standard choice for scalable multipoint VLAN extension across several data centers. - VPLS is the more appropriate technology for this requirement. Conclusion: Because the CSP needs multipoint Layer 2 extension so that VMs in different data centers can remain on the same subnet, VPLS is the correct tunneling technology. Question 2 As part of network design, two geographically separated data centers must be interconnected using Ethernet-over-MPLS pseudowire. The link between the sites is stable, the topology has no apparent loops, and the root bridges for the respective VLANs are stable and unchanging. Which aspect must be the part of the design to mitigate the risk of connectivity issues between the data centers? Options: A. Enable 802.1d on one data center, and 802.1w on the other. B. Ensure that the spanning tree diameter for one or more VLANs is not too large. C. Enable UDLD on the link between the data centers. D. Enable root guard on the link between the data centers. Answer: B Explanation: The correct answer is B. Ensure that the spanning tree diameter for one or more VLANs is not too large. When two data centers are connected through Ethernet-over-MPLS pseudowire, the link behaves like an extended Layer 2 connection. Even if the physical link is stable, the design still has to account for spanning tree behavior across the extended topology. Why B is correct: Spanning tree diameter refers to the maximum number of switches a Layer 2 frame may traverse within a VLAN before reaching the root bridge. In stretched Layer 2 designs, especially across data centers, a large spanning tree diameter can cause problems such as delayed convergence, inconsistent topology perception, and connectivity issues during failures or topology changes. Cisco Cisco 352-011 PDF https://www.certification-exam.com/ Since the topology is stable and the root bridges are fixed, the main remaining design concern is making sure the spanning tree domain is not too large for the protocol and network to handle reliably. Keeping the diameter within acceptable limits helps prevent connectivity issues across the pseudowire extension. Why the other options are incorrect: A. Enable 802.1d on one data center, and 802.1w on the other. This is not a proper design control for solving inter-data-center connectivity risk. Mixing spanning tree versions between sites is not the recommended mitigation and can create operational complexity rather than improve reliability. C. Enable UDLD on the link between the data centers. UDLD is used to detect unidirectional physical link failures, typically on direct fiber or Ethernet links. It is useful in some cases, but it does not address the main concern in a stretched Layer 2 pseudowire environment, which is spanning tree diameter and convergence behavior. D. Enable root guard on the link between the data centers. Root guard is used to prevent an inferior switch from becoming root bridge on a port. Since the root bridges are already stable and unchanging, root guard is not the specific design element needed here. Summary: In a stretched Layer 2 data center design using Ethernet-over-MPLS pseudowire, the key design consideration is to keep the spanning tree diameter small enough to avoid convergence and reachability problems. That is why B is the best answer. Question 3 Which load balancing option for IP-only traffic is the least efficient in terms of EtherChannel physical links utilization? Options: A. On a per source IP address basis B. On a per destination MAC address basis C. On a per destination IP address basis D. On a per port number basis Answer: B Explanation: The correct answer is B. On a per destination MAC address basis. EtherChannel distributes traffic across its member physical links by using a load-balancing algorithm. The goal is to spread flows as evenly as possible so that no single link becomes overloaded while others remain underused. For IP-only traffic, options based on IP addresses or port numbers usually provide better distribution because they create more variation in the traffic hash. That means different conversations are more likely to be mapped to different physical links. Why B is least efficient: Cisco Cisco 352-011 PDF https://www.certification-exam.com/ - MAC addresses often do not change much within a given path, especially for routed IP traffic. - In many IP-only traffic scenarios, the destination MAC address may be the same for many packets, such as the MAC address of the next-hop router. - If many flows share the same destination MAC address, the hashing process places them on the same EtherChannel link. - This reduces link utilization because one link carries a large share of the traffic while other links may stay relatively idle. Why the other options are better: - A. Per source IP address basis: usually provides better spread because different source IPs can hash to different links. - C. Per destination IP address basis: also offers good distribution when traffic is going to multiple destinations. - D. Per port number basis: typically gives the best distribution for many flows because transport-layer ports add more uniqueness, especially for multiple sessions between the same endpoints. Summary: For IP-only traffic, using destination MAC address for EtherChannel load balancing is the least efficient because it often does not vary enough to distribute traffic evenly across the physical links. Question 4 A service provider wants to use a controller to automate the provisioning of service function chaining. Which two overlay technologies can be used with EVPN MP-BGP to create the service chains in the data center? Options: A. VXLAN B. MPLS L2VPN C. Provider Backbone Bridging EVPN D. 802.1Q Answer: A Explanation: The correct answer is A. VXLAN Service function chaining in a data center requires an overlay technology that can carry tenant traffic between service nodes while EVPN MP-BGP provides the control plane for reachability and MAC/IP learning. Among the options, VXLAN is the most commonly used overlay with EVPN MP-BGP for building scalable service chains. Why A is correct: - VXLAN is an overlay encapsulation protocol designed for data center virtualization. - It works well with EVPN MP-BGP as the control plane. - Together, they provide scalable layer 2 and layer 3 connectivity across the fabric. Cisco Cisco 352-011 PDF https://www.certification-exam.com/ - This makes it suitable for automating service function chaining in modern data centers. Why the other options are not correct: - B. MPLS L2VPN: This can be used with EVPN in some environments, but it is not the most typical overlay technology for data center service chaining in this context. - C. Provider Backbone Bridging EVPN: PBB-EVPN is a valid EVPN-based solution, but it is less commonly used for data center service chaining than VXLAN. - D. 802.1Q: This is a VLAN tagging mechanism, not a scalable overlay technology for EVPN-based service chaining. Key idea: EVPN MP-BGP is the control plane, and VXLAN is the overlay data plane used to build the service chain. So the best answer is: A. VXLAN Question 5 Company ABC is using an Ethernet virtual circuit as its provider’s DCI solution. A goal is to reduce the time to detect the link failure. Which protocol accomplishes this goal? Options: A. UDLD B. Spanning tree bridge assurance C. Link aggregation group D. Ethernet OAM Answer: D Explanation: The correct answer is D. Ethernet OAM The key requirement in the question is to reduce the time to detect a link failure in an Ethernet virtual circuit used as a provider data center interconnect (DCI) solution. Ethernet OAM, which stands for Ethernet Operations, Administration, and Maintenance, is specifically designed to monitor Ethernet links and detect faults quickly. It provides mechanisms for fault detection, performance monitoring, and troubleshooting at the Ethernet layer. In this scenario, it is the best choice because it can rapidly identify a failed link or service issue in the provider’s Ethernet circuit. Why the other options are not correct: A. UDLD Unidirectional Link Detection (UDLD) is used to detect unidirectional link failures on fiber or Ethernet connections. While it helps with link integrity, it is primarily a Layer 2 protection feature for direct device links and is not the best fit for provider Ethernet virtual circuit failure detection in a DCI environment. B. Spanning tree bridge assurance Bridge assurance is a spanning tree enhancement that helps detect failures on point-to-point trunk links between switches. It is useful in Layer 2 switching environments, but it does not specifically address Cisco Cisco 352-011 PDF https://www.certification-exam.com/ provider Ethernet circuit failure detection the way Ethernet OAM does. C. Link aggregation group A link aggregation group (LAG) combines multiple physical links into one logical link for redundancy and bandwidth. It can provide failover, but it is not a protocol for quickly detecting failures in an Ethernet virtual circuit. Why D is best: Ethernet OAM is designed to detect and report failures efficiently across Ethernet services, making it ideal for DCI deployments where fast fault detection on provider-managed circuits is important. If you want, I can also provide a short comparison table of these four options. Question 6 ACME Corporation is integrating IPv6 into their network, which relies heavily on multicast distribution of data. Which two IPv6 integration technologies support IPv6 multicast? (Choose two.) Options: A. 6VPE B. 6PE C. dual stack D. ISATAP E. 6to4 F. IPv6INIP Answer: C, E Explanation: The correct answers are C. dual stack and E. 6to4. Here is why: IPv6 multicast is used when a device needs to send traffic to multiple receivers efficiently. When integrating IPv6 into an existing network, not every transition technology supports multicast in the same way. C. Dual stack Dual stack devices run both IPv4 and IPv6 at the same time. Because native IPv6 is fully supported, IPv6 multicast works normally on the IPv6-enabled interface. This makes dual stack a valid choice for environments that depend on multicast communication. E. 6to4 6to4 is an IPv6 transition mechanism that encapsulates IPv6 traffic inside IPv4 and is designed to carry IPv6 traffic across an IPv4 network. It supports IPv6 multicast-related communication as part of the IPv6 traffic being transported, so it is considered one of the technologies that can support IPv6 multicast in transition scenarios. Why the other options are not correct: A. 6VPE Cisco Cisco 352-011 PDF https://www.certification-exam.com/ 6VPE is used for carrying IPv6 VPN traffic over an MPLS IPv4 backbone. It is a provider VPN technology, not a general IPv6 multicast integration method. B. 6PE 6PE allows IPv6 traffic to be carried across an IPv4 MPLS core using IPv4 label switched paths. It is mainly used for unicast IPv6 transport, not multicast support. D. ISATAP ISATAP is an IPv6 transition mechanism used to connect IPv6 over an IPv4 intranet, primarily for host-to- router communication. It is not typically selected as an IPv6 multicast-supporting integration technology in this context. F. IPv6INIP This appears to refer to IPv6-in-IPv4 tunneling. While tunneling carries IPv6 packets, this option is not the standard answer for multicast support in this question. In summary: Dual stack provides native IPv6 operation, including multicast. 6to4 tunnels IPv6 over IPv4 and is one of the transition technologies associated with IPv6 multicast support. So the correct choices are C and E. Question 7 What is an implication of using route reflectors in an iBGP topology? Options: A. Route reflection limits the total number of iBGP routers. B. Route reflection causes traffic to flow in a hub-and-spoke fashion. C. The manipulation of BGP attributes is not supported on the other routers than the route reflectors. D. Route reflectors can create routing loops when more than one router reflector is used in the same cluster. E. Multipath information is difficult to propagate in a route reflector topology. Answer: E Explanation: The correct answer is E. Multipath information is difficult to propagate in a route reflector topology. In a normal iBGP full-mesh topology, every iBGP router learns routes directly from every other iBGP router. This makes it easier for multiple equal-cost paths, or multipath information, to be shared consistently across the network. Route reflectors were introduced to reduce the need for a full mesh of iBGP peerings. A route reflector receives routes from some iBGP clients and reflects them to other clients, which simplifies scalability. However, this hierarchy can interfere with the propagation of multiple paths. A route reflector may not Cisco Cisco 352-011 PDF https://www.certification-exam.com/ reflect all alternate paths in the same way a full mesh would, so some routers may not learn about all available equal-cost routes. As a result, multipath information can be harder to propagate. Why the other options are incorrect: A. Route reflection limits the total number of iBGP routers. This is incorrect. Route reflectors are used to improve scalability and allow larger iBGP networks, not limit the number of routers. B. Route reflection causes traffic to flow in a hub-and-spoke fashion. This is misleading. Route reflectors create a control-plane hierarchy, but they do not inherently force data traffic to travel in a hub-and-spoke pattern. C. The manipulation of BGP attributes is not supported on the other routers than the route reflectors. This is false. BGP attribute manipulation can be done on many routers using policy tools such as route maps, prefix lists, and policy statements. D. Route reflectors can create routing loops when more than one router reflector is used in the same cluster. This is not generally correct as stated. Route reflectors are designed with cluster IDs and originator IDs specifically to prevent routing loops. Misconfiguration can cause problems, but this is not the typical implication being tested. Why E is the best answer: A key drawback of route reflector topologies is that they can make multipath propagation less straightforward. Because not all routers exchange routes directly, alternate paths may not be distributed as fully as in a full-mesh iBGP design. This is a common limitation of route reflector deployments. If you'd like, I can also explain how route reflectors work internally with client and non-client routers. Question 8 What are two benefits of following a structured hierarchical and modular design? (Choose two.) Options: A. Each component can be designed independently for its role. B. Each component can be managed independently based on its role. C. Each component can be funded by different organizations based on its role. D. Each component can support multiple roles based on the requirements. E. Each component can provide redundancy for applications and services. Answer: A, B Explanation: The correct answers are A and B. Why A is correct: In a structured hierarchical and modular design, the system is divided into smaller components or modules, each with a specific responsibility. Because of this separation, each component can be designed Cisco Cisco 352-011 PDF https://www.certification-exam.com/ independently for its role. This makes the overall system easier to plan, build, test, and maintain. Why B is correct: A modular hierarchy also allows each component to be managed independently based on its role. Different parts of the system can be administered, updated, or troubleshot without affecting the entire design. This improves scalability, flexibility, and operational efficiency. Why the other options are not correct: C. Funding by different organizations is not a core benefit of hierarchical modular design. That may happen in some real-world situations, but it is not a design advantage. D. Supporting multiple roles is more associated with less modular or more multifunctional designs, not with a strictly structured modular approach where components have defined roles. E. Redundancy is a benefit of fault-tolerant or highly available designs, not specifically of hierarchical modular design. In summary, the main advantages are that each part can be designed independently and managed independently, which is why A and B are correct. Question 9 Which three options are important design functions of IPv6 first-hop security? (Choose three) Options: A. It prevents rogue DHCP servers farms assigning IPv6 addresses. B. It prevents IPv6 packets fragmentation. C. It limits IPv6 route the advertisement in the network. D. It implements a broadcast-control mechanism. E. It suppresses excessive multicast neighbor discovery. F. It implements multihoming security. Answer: A, C, E Explanation: The correct answers are A, C, and E. IPv6 first-hop security refers to protections applied on the local network segment, typically at the access switch, to defend against attacks that can be launched by hosts connected to the same Layer 2 domain. Its goal is to stop unauthorized devices from sending harmful IPv6 control traffic that could interfere with address assignment, routing, or neighbor discovery. Explanation of the correct options: A. It prevents rogue DHCP servers from assigning IPv6 addresses. This is correct. IPv6 first-hop security includes mechanisms such as DHCPv6 guard, which blocks unauthorized DHCPv6 server messages from reaching clients. This helps prevent rogue servers from handing out invalid addresses or configuration information. C. It limits IPv6 route advertisements in the network. Cisco Cisco 352-011 PDF https://www.certification-exam.com/ This is correct. A key function of first-hop security is controlling Router Advertisement messages through features like RA guard. This prevents unauthorized devices from advertising themselves as routers and influencing the default gateway or route selection of hosts. E. It suppresses excessive multicast neighbor discovery. This is correct. IPv6 depends heavily on Neighbor Discovery, which uses multicast traffic. First-hop security can include protections such as Neighbor Discovery inspection or rate limiting to reduce abuse from excessive or malicious ND traffic. This helps protect the local network from flooding or spoofing attacks. Why the other options are incorrect: B. It prevents IPv6 packet fragmentation. Incorrect. First-hop security is not primarily designed to prevent fragmentation. IPv6 fragmentation is handled by protocol behavior and packet handling mechanisms, not by first-hop security features. D. It implements a broadcast-control mechanism. Incorrect. IPv6 does not use broadcast the way IPv4 does; it relies on multicast and unicast. First-hop security is not about broadcast control. F. It implements multihoming security. Incorrect. Multihoming security is not a standard design function of IPv6 first-hop security. First-hop security focuses on securing local neighbor and router discovery traffic, not multihoming. Summary: IPv6 first-hop security is mainly about protecting the local link from rogue control-plane messages. The important design functions are: - A: stop rogue DHCPv6 servers - C: limit unauthorized Router Advertisements - E: suppress excessive Neighbor Discovery traffic Therefore, the correct answer is A, C, and E. Question 10 You have been asked to design a wireless network solution that will implement context-aware services on an existing network that was initially deployed for data traffic only. Which two design principles would you follow to increase the location accuracy with the least possible impact on the current setup? (Choose two.) Options: A. Use directional antennas to provide better cell separation. B. Add access points along the perimeter of the coverage area. C. Install additional APs in monitor mode where the co-channel interference would otherwise be affected. D. Increase the AP density to create an average inter-access point distance of less than 40 ft.| 12.2meters E. Fine tune the access point’s radio configuration to have a higher average transmission power to Cisco Cisco 352-011 PDF https://www.certification-exam.com/ achieve better coverage. Answer: A, D Explanation: The correct answers are A and D. Why these are correct The goal is to improve location accuracy for context-aware services on an existing wireless network that was originally designed only for data. For location-based services, accuracy improves when the wireless cells are smaller and more distinct, and when the network has enough access points to provide strong triangulation or proximity data. A. Use directional antennas to provide better cell separation. This helps because directional antennas focus RF energy in specific directions instead of broadcasting equally in all directions. That creates more distinct coverage areas and reduces overlap between neighboring cells. Better cell separation improves the ability to determine a client’s location more accurately. D. Increase the AP density to create an average inter-access point distance of less than 40 ft. | 12.2 meters. This is also correct because more access points placed closer together give the system more reference points for determining location. Higher AP density generally improves location accuracy since clients can be heard by multiple APs with stronger and more differentiated signal readings. The less-than-40-foot spacing is a common design guideline for location services. Why the other options are not best B. Add access points along the perimeter of the coverage area. This may help coverage at the edges, but it does not directly improve overall location accuracy as effectively as increasing density throughout the area. It is more about coverage extension than precise indoor positioning. C. Install additional APs in monitor mode where the co-channel interference would otherwise be affected. Monitor mode APs can help with location tracking or rogue detection in some designs, but the wording here suggests placing them specifically to avoid co-channel interference. That makes this less of a direct design principle for improving location accuracy with minimal impact on an existing data network. E. Fine tune the access point’s radio configuration to have a higher average transmission power to achieve better coverage. Increasing transmit power usually enlarges cell size and increases overlap, which tends to reduce location accuracy rather than improve it. For location-aware services, smaller, well-defined cells are generally better than large, overlapping ones. Summary To improve location accuracy with minimal disruption to a data-only WLAN, you want: - A: directional antennas to sharpen RF boundaries - D: higher AP density with APs spaced closely enough for accurate location determination So the correct answer is A and D. Would you like to see more? 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