View Full Cisco CCNP Enterprise 300-440 Exam Dumps  and Practice Test Dumps

 

Question 181. The design requirement is to maintain cloud connectivity if either transport fails. Which design characteristic best addresses this requirement?

1. Using a single centralized tunnel over the preferred transport
2. Disabling dynamic routing between the SD-WAN edge and cloud
3. Increasing the MTU of both WAN interfaces
4. Using redundant connectivity paths with appropriate failover mechanisms

Correct Answer: 4. Using redundant connectivity paths with appropriate failover mechanisms

Explanation :-

Redundant connectivity paths allow traffic to continue reaching the cloud when one underlying WAN transport becomes unavailable. In a resilient cloud-connectivity design, independent transports or providers can be combined with routing or SD-WAN policy mechanisms that detect failures and select an alternate path. Simply increasing MTU, disabling dynamic routing, or relying on a single preferred tunnel does not provide transport-level resiliency. The design should also consider whether both paths terminate at sufficiently independent cloud or provider infrastructure so that a single failure domain does not affect both connections simultaneously.

Question 182. An enterprise wants to connect its data center to a cloud provider while keeping predictable bandwidth and avoiding contention associated with shared Internet-based connectivity. Which connectivity model is most appropriate?

1. Dedicated private connectivity
2. Best-effort Internet connectivity
3. Public DNS-based connectivity
4. Single-user broadband connectivity

Correct Answer: 1. Dedicated private connectivity

Explanation :-

Dedicated private connectivity is designed to provide a more predictable path between enterprise infrastructure and cloud environments. Depending on the provider and service, dedicated connections can offer committed bandwidth, more controlled performance, and reduced dependence on the public Internet. This makes them suitable when an organization has significant traffic volumes, strict performance requirements, or compliance considerations. Internet-based connectivity can still be appropriate for less demanding workloads, but it generally provides less control over the underlying path and performance. The final design should also consider redundancy, provider diversity, and cloud-region requirements.

Question 183. A security team wants traffic between application servers in two cloud networks to be inspected by a centralized firewall before reaching the destination network. What traffic pattern is being addressed?

1. North-south traffic
2. Internet ingress traffic
3. East-west traffic
4. DNS control-plane traffic

Correct Answer: 3. East-west traffic

Explanation :-

East-west traffic refers to traffic moving laterally between internal workloads, networks, or segments rather than traffic entering or leaving an environment. In a cloud architecture, application-to-application or workload-to-workload communication across separate virtual networks is commonly considered east-west traffic. Centralized security inspection can be implemented to control this lateral movement before traffic reaches its destination. North-south traffic instead describes traffic entering or leaving the cloud environment, such as users accessing a public application or cloud workloads accessing the Internet. Correctly identifying the traffic direction helps determine appropriate routing and security-policy placement.

Question 184. A cloud-connected router learns the same destination prefix through both eBGP and OSPF. Assuming default Cisco administrative distances and otherwise valid routes, which route is preferred?

1. OSPF route because its metric is evaluated before administrative distance
2. eBGP route because its administrative distance is lower than OSPF
3. OSPF route because internal routing protocols always override BGP
4. Both routes are installed because they use different routing protocols

Correct Answer: 2. eBGP route because its administrative distance is lower than OSPF

Explanation :-

When routes to the same destination are learned from different routing protocols, Cisco first uses administrative distance to determine which protocol’s route is preferred. By default, eBGP has an administrative distance of 20, while OSPF has an administrative distance of 110. Therefore, the eBGP route is preferred when all other relevant conditions are equal. After a protocol is selected, that protocol’s own route-selection process determines the best path among routes learned through that protocol. This distinction is important when integrating cloud connectivity with multiple routing protocols and troubleshooting unexpected route installation.

Question 185. An organization uses two cloud connectivity links and wants both links to actively carry traffic under normal conditions while retaining redundancy if one link fails. Which design approach best matches this requirement?

1. Configure one link as permanently unused backup
2. Disable routing on the secondary link
3. Use only static routes with identical administrative distance
4. Use an active-active connectivity design with appropriate traffic distribution

Correct Answer: 4. Use an active-active connectivity design with appropriate traffic distribution

Explanation :-

An active-active design allows multiple connectivity paths to participate in forwarding traffic during normal operation while retaining alternate capacity if one path fails. The exact implementation can use routing, ECMP, SD-WAN policies, or cloud-provider mechanisms depending on the architecture. This differs from active-passive designs, where one connection normally carries traffic and the other remains available primarily for failover. An active-active design requires careful consideration of routing symmetry, capacity, failure detection, and application behavior. Both links should also be sufficiently independent to avoid creating a false sense of redundancy.

Question 186. A company sends voice and business-critical application traffic from its branch to a cloud service over the same WAN connection as bulk backups. Which design mechanism can help ensure critical traffic receives appropriate treatment?

1. Quality of Service policies
2. Disabling all routing protocols
3. Increasing DNS TTL values
4. Removing the cloud security policy

Correct Answer: 2. Quality of Service policies

Explanation :-

Quality of Service, or QoS, can classify traffic and apply appropriate queuing, scheduling, marking, policing, or shaping mechanisms. This is particularly important when latency-sensitive traffic such as voice shares a constrained WAN connection with high-volume traffic such as backups. QoS cannot create additional bandwidth, but it can control how available bandwidth is allocated during congestion. In cloud connectivity designs, QoS requirements should be considered across the complete path because markings may be changed or treated differently by intermediate networks. The policy should therefore align with application requirements and the capabilities of the WAN and cloud connectivity services.

Question 187. A cloud provider requires the enterprise router to establish an encrypted site-to-site connection while preventing unauthorized traffic from being carried through the VPN. Which IPsec configuration element defines the traffic that should be protected?

1. Traffic selectors or crypto ACL definitions
2. BGP hold timer
3. OSPF router ID
4. DNS resolver configuration

Correct Answer: 1. Traffic selectors or crypto ACL definitions

Explanation :-

IPsec uses traffic selectors or equivalent policy definitions to identify the traffic that should be protected by the VPN. Depending on the implementation, these definitions can specify source and destination networks, protocols, and other relevant parameters. They help determine which packets are considered interesting traffic and therefore processed by the IPsec policy. BGP timers and OSPF router IDs control routing behavior rather than defining the protected traffic. DNS configuration is unrelated to IPsec traffic selection. When troubleshooting a cloud VPN, mismatched selectors can result in tunnels that appear established while expected application traffic is not successfully encrypted.

Question 188. An enterprise deploys Cisco SD-WAN and wants cloud-bound SaaS applications to use an optimized path rather than automatically backhauling all traffic through the headquarters data center. Which capability addresses this requirement?

1. Static DNS host records
2. Local console access
3. SD-WAN cloud/SaaS-aware path optimization
4. Disabling application identification

Correct Answer: 3. SD-WAN cloud/SaaS-aware path optimization

Explanation :-

Cisco SD-WAN provides capabilities that can identify SaaS applications and select appropriate paths based on application and network-performance requirements. Cloud or SaaS-aware optimization can help avoid unnecessary Internet backhaul through a centralized data center when a direct or optimized path is available. Path selection can consider characteristics such as latency, loss, jitter, and policy requirements. Static DNS records or disabling application identification do not provide this type of policy-driven optimization. The design should also consider security requirements, because local Internet access may require appropriate inspection and security controls.

Question 189. A network engineer needs to verify which prefixes a cloud-connected BGP neighbor is advertising to the enterprise router. Which command category provides the most directly relevant information?

1. OSPF neighbor database
2. Interface counter statistics
3. BGP routes received from the neighbor
4. IPsec security association lifetime

Correct Answer: 2. BGP routes received from the neighbor

Explanation :-

BGP operational commands that display routes received from a specific neighbor are useful for determining which prefixes the neighbor has advertised and how those routes are being processed. This information can help identify prefix filtering, missing advertisements, or unexpected routing behavior on a cloud connection. OSPF databases contain OSPF-specific information, while interface counters and IPsec security associations address different troubleshooting areas. When investigating BGP cloud integration, engineers should distinguish between routes received from a peer, routes advertised to a peer, and routes actually installed in the local routing table.

Question 190. A cloud VPN tunnel is established, but large application packets fail while small packets work correctly. Packet captures indicate that fragmentation is occurring unexpectedly. Which issue should be investigated first?

1. BGP local preference
2. OSPF process ID
3. DNS zone delegation
4. MTU and packet-size handling across the VPN path

Correct Answer: 4. MTU and packet-size handling across the VPN path

Explanation :-

IPsec encapsulation adds overhead to packets, reducing the effective payload size that can traverse a path without fragmentation. If the original network was designed around a larger MTU, encrypted traffic may exceed the available path MTU. This can cause fragmentation, dropped packets when fragmentation is blocked, or application-specific failures for larger packets. Engineers should examine interface MTUs, tunnel overhead, Path MTU Discovery behavior, and TCP MSS adjustment where appropriate. BGP local preference and OSPF process identifiers do not explain packet-size-specific failures. MTU-related problems are particularly important in cloud VPN troubleshooting.

Question 191. A company wants Internet-bound traffic from cloud workloads to exit directly through a centralized cloud security service rather than being sent through an on-premises data center. What design principle is being applied?

1. Localized cloud Internet egress with centralized security inspection
2. OSPF area summarization
3. BGP AS-path prepending
4. IPsec anti-replay protection

Correct Answer: 3. Localized cloud Internet egress with centralized security inspection

Explanation :-

Cloud architectures can place Internet egress close to cloud workloads while still enforcing centralized security policies through a cloud firewall or security service. This approach can reduce unnecessary backhaul through on-premises infrastructure while maintaining inspection and policy enforcement. The exact implementation depends on the cloud platform and enterprise architecture. OSPF summarization and BGP AS-path prepending are routing mechanisms, while IPsec anti-replay protection is a VPN security function. When designing Internet egress, engineers should also consider routing symmetry, source NAT, security policy, logging, compliance, and failure scenarios.

Question 192. A cloud provider advertises a default route toward an enterprise router, but the enterprise must not accept that route because Internet access is handled locally. Which routing-policy function is appropriate?

1. Increase the OSPF hello interval
2. Filter the unwanted prefix using a routing policy
3. Disable IPsec encryption
4. Change the interface bandwidth value

Correct Answer: 1. Filter the unwanted prefix using a routing policy

Explanation :-

If a cloud or service-provider peer advertises a default route that should not be accepted, an inbound routing policy can filter the unwanted prefix. Prefix lists, route maps, or equivalent policy mechanisms can be used to control which BGP routes are accepted. Filtering the default route allows the enterprise to retain its intended Internet-egress architecture without disabling the entire BGP session. Changing OSPF timers, disabling IPsec, or modifying interface bandwidth does not directly control which BGP prefixes are accepted. Route filtering should be carefully scoped so that required cloud-specific prefixes continue to be learned.

Question 193. An organization connects multiple cloud regions through a shared transit architecture. Security requirements state that workloads in one application segment must not directly communicate with another segment unless explicitly permitted. Which design feature is most relevant?

1. Increasing BGP keepalive timers
2. Disabling route advertisements
3. Network segmentation combined with explicit security policy
4. Using a single unrestricted routing table

Correct Answer: 4. Network segmentation combined with explicit security policy

Explanation :-

Network segmentation separates workloads or traffic domains and allows security policies to explicitly control permitted communication. In a multi-region cloud environment, segmentation can be implemented using virtual routing domains, security groups, firewalls, VRFs, or cloud-native segmentation mechanisms, depending on the platform. Simply disabling route advertisements can break required connectivity without providing a complete security model. A single unrestricted routing table does not enforce isolation. The design should define both routing reachability and security enforcement because having a route to a destination does not by itself determine whether the traffic should be permitted.

Question 194. A cloud connectivity circuit meets its bandwidth requirement but experiences frequent latency and jitter violations. Which requirement category is not being adequately satisfied?

1. Address-space allocation
2. Quality and performance requirements
3. Authentication naming requirements
4. DNS resolution requirements

Correct Answer: 3. Quality and performance requirements

Explanation :-

Bandwidth is only one dimension of cloud connectivity performance. Applications may also require defined limits for latency, jitter, packet loss, and availability. A circuit can provide sufficient throughput while still failing application requirements because delay or variation in delay is excessive. These requirements should therefore be captured in the connectivity design and, where applicable, reflected in service-level agreements and monitoring. Addressing and DNS are important architectural considerations but do not directly describe the latency and jitter characteristics of the transport. Performance validation should be performed under realistic traffic conditions rather than relying solely on nominal bandwidth.

Question 195. A cloud-connected router has an active BGP session, but a required cloud prefix is not present in the routing table. The prefix is visible in the BGP table but marked as not best. What should the engineer investigate?

1. The BGP best-path selection process and competing routes
2. The physical rack location of the router
3. The DNS cache timeout
4. The IPsec encryption algorithm name only

Correct Answer: 2. The BGP best-path selection process and competing routes

Explanation :-

A prefix can be present in the BGP table without being installed in the routing table if another path is selected as the best route or if another condition prevents installation. The engineer should inspect competing paths and relevant BGP attributes such as weight, local preference, locally originated routes, AS-path length, origin, MED, and other applicable selection criteria. The exact order and applicability depend on the Cisco implementation and configuration. An established BGP session only confirms that the peers can exchange routing information; it does not guarantee that every learned prefix becomes the active forwarding route.

Question 196. A company requires a cloud connection to remain available during a provider-edge device failure. The two links currently terminate on the same provider device. What design concern should be addressed?

1. DNS record length
2. OSPF process numbering
3. Shared failure domain
4. TCP window scaling

Correct Answer: 1. Shared failure domain

Explanation :-

Redundancy is only effective when the redundant components do not depend on the same critical failure point. If two cloud connectivity links terminate on the same provider-edge device, failure of that device can interrupt both links simultaneously. This creates a shared failure domain and limits the practical resiliency of the design. A stronger design may use diverse provider devices, paths, facilities, or even providers, depending on the required level of availability. Engineers should evaluate the complete physical and logical topology rather than assuming that two logical connections automatically provide independent redundancy.

Question 197. An SD-WAN administrator wants a business-critical application to use a WAN path only when latency, loss, and jitter remain within defined thresholds. Which policy concept is most appropriate?

1. Static hostname resolution
2. OSPF passive-interface configuration
3. Application-aware path selection based on performance criteria
4. Increasing IPsec key lifetime

Correct Answer: 3. Application-aware path selection based on performance criteria

Explanation :-

Application-aware path selection allows SD-WAN policy to select or avoid paths based on measured network conditions such as latency, packet loss, and jitter. This is useful when an application has explicit performance requirements rather than simply requiring any available path. The policy can define preferred transports and thresholds and can react when a path no longer satisfies the required conditions. DNS, OSPF passive interfaces, and IPsec key lifetime settings do not provide application-specific WAN path selection based on real-time performance. Monitoring and policy definitions should be aligned with the actual application’s service-level requirements.

Question 198. A cloud-connected enterprise uses BGP to advertise its internal prefixes. The cloud provider should receive only a defined set of corporate networks. Which control is most appropriate?

1. Disable BGP keepalives
2. Apply an outbound prefix filter or routing policy
3. Increase the IPsec MTU
4. Change the OSPF router ID

Correct Answer: 4. Apply an outbound prefix filter or routing policy

Explanation :-

An outbound prefix filter or routing policy controls which routes the enterprise advertises to the cloud provider. This is important for preventing accidental advertisement of internal, infrastructure, or otherwise unauthorized prefixes. Prefix lists and route policies can define the exact networks that are permitted for advertisement. BGP keepalive settings affect session maintenance rather than route filtering, while MTU and OSPF router IDs address different technical functions. Carefully scoped outbound filtering is a fundamental control when connecting enterprise routing domains to external cloud networks.

Question 199. A cloud VPN remains operational, but traffic is failing because the remote network’s return route points to a different gateway than the one carrying the forward traffic. What problem does this indicate?

1. Asymmetric or incorrect return-path routing
2. Excessive DNS TTL
3. Incorrect BGP router ID only
4. Insufficient TCP application ports

Correct Answer: 1. Asymmetric or incorrect return-path routing

Explanation :-

A VPN connection can remain established while application traffic fails if the return path is incorrect or takes an incompatible route. Stateful firewalls, NAT devices, and security policies can be particularly sensitive to asymmetric forwarding. Troubleshooting should verify the forward route, return route, next-hop reachability, security policy, and NAT behavior on both sides of the connection. A successful IPsec security association proves that the VPN control mechanisms are functioning, but it does not guarantee that end-to-end forwarding is correct. Symmetric routing is often desirable where stateful inspection is involved.

Question 200. A network engineer must determine whether a cloud-connected BGP peer is successfully advertising the expected enterprise prefixes to the cloud side. Which information is most useful?

1. OSPF LSDB entries for unrelated areas
2. The local interface description only
3. IPsec encryption statistics only
4. BGP advertised-routes information for the cloud neighbor

Correct Answer: 2. The local interface description only

Explanation :-

BGP advertised-routes information is the most direct source for determining which prefixes the local router is advertising to a specific BGP neighbor. This helps identify whether the expected enterprise prefixes are actually being sent toward the cloud provider and whether outbound filtering or policy is preventing their advertisement. OSPF LSDB information and IPsec statistics provide useful information for other troubleshooting scenarios but do not directly show BGP advertisements to the peer. Interface descriptions can help identify physical links but do not verify the contents of BGP route advertisements.