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

 

Question 201. An enterprise is designing connectivity between its data center and a public cloud.

1. Configure NAT on every cloud subnet
2. Disable all dynamic routing
3. Identify application, connectivity, resiliency, and security requirements
4. Deploy the largest available VPN tunnel

Correct Answer: 3. Identify application, connectivity, resiliency, and security requirements

Explanation :-

Cloud connectivity design should begin by identifying the requirements that the network must satisfy. These include bandwidth, latency, availability, routing, security, compliance, and application-specific requirements. Once the requirements are understood, engineers can select an appropriate connectivity model such as dedicated connectivity, Internet-based IPsec, or SD-WAN cloud connectivity. Deploying a large VPN tunnel without understanding the requirements can result in unnecessary cost or an architecture that does not meet application needs. Requirement analysis also helps determine whether redundancy, multiple providers, diverse paths, or specific routing and security controls are necessary.

Question 202. A company uses a cloud provider that supports two independent private connectivity circuits. The business requires continued service if one circuit becomes unavailable. Which design provides the intended resiliency?

1. Place both circuits in the same logical tunnel
2. Configure one circuit but increase its bandwidth
3. Use a single BGP session across both circuits
4. Use independent connectivity paths with appropriate failover or load-sharing

Correct Answer: 4. Use independent connectivity paths with appropriate failover or load-sharing

Explanation :-

Independent connectivity paths provide resilience by allowing traffic to continue when one circuit fails. Depending on the architecture, BGP, SD-WAN, ECMP, or cloud-native mechanisms can be used to distribute traffic or provide failover. Merely increasing the bandwidth of one circuit does not protect against circuit failure. Combining both circuits into a single logical dependency can also reduce the effectiveness of redundancy. The engineer should verify that the circuits terminate on sufficiently independent infrastructure and that routing converges correctly after a failure.

Question 203. A cloud workload must communicate with another private workload located in a different virtual network. No Internet access is involved. Which traffic classification best describes this communication?

1. East-west traffic
2. North-south Internet traffic
3. Internet ingress traffic
4. Public egress traffic

Correct Answer: 1. East-west traffic

Explanation :-

East-west traffic describes communication between internal workloads, networks, or application tiers. In cloud environments, traffic between private virtual networks or between application components is generally considered east-west traffic when it remains within the broader private infrastructure. North-south traffic describes movement into or out of the environment, such as users accessing a cloud application or workloads accessing the public Internet. Identifying traffic direction is important because different security and routing controls may be required for lateral traffic compared with Internet-bound or Internet-originated traffic.

Question 204. An organization wants cloud traffic to remain private and avoid traversing the public Internet while maintaining a predictable service-level commitment. Which connectivity option best aligns with these requirements?

1. Public Internet VPN with no redundancy
2. Dedicated private cloud connectivity
3. Unencrypted Internet routing
4. Public DNS forwarding

Correct Answer: 2. Dedicated private cloud connectivity

Explanation :-

Dedicated private cloud connectivity provides a private path between enterprise infrastructure and the cloud provider without relying on the public Internet for the primary transport. Such services can provide predictable capacity and defined service characteristics, depending on the provider and service agreement. Internet-based VPNs can provide encryption and may be appropriate in many scenarios, but they depend on Internet transport and generally offer less control over the underlying path. The selected solution should still be evaluated for redundancy, geographic diversity, provider availability, security requirements, and cost.

Question 205. An engineer observes that a cloud-connected BGP session is established, but the expected cloud prefixes are missing from the enterprise routing table. What should be checked first?

1. DNS cache expiration
2. IPsec encryption algorithm
3. OSPF hello interval on unrelated interfaces
4. BGP received routes and inbound routing policy

Correct Answer: 4. BGP received routes and inbound routing policy

Explanation :-

An established BGP session confirms that the peers have successfully formed a control-plane relationship, but it does not guarantee that the expected routes are being received or installed. The engineer should verify the routes received from the cloud neighbor and examine any inbound prefix lists, route maps, or routing policies. If the route is received but not installed, BGP best-path selection and competing routes should also be investigated. This troubleshooting approach separates session establishment from route exchange and route installation, which are distinct stages of BGP operation.

Question 206. A company wants Internet-bound traffic from branch offices to use local cloud-based Internet breakout instead of being backhauled to a central data center. Which design benefit is most directly associated with this approach?

1. Reduced unnecessary backhaul latency
2. Elimination of all security requirements
3. Guaranteed zero packet loss
4. Removal of all routing policies

Correct Answer: 1. Reduced unnecessary backhaul latency

Explanation :-

Local Internet breakout can reduce unnecessary traffic backhaul through a centralized data center before reaching the Internet. This can improve application responsiveness and reduce the amount of traffic carried across the private WAN. However, local breakout does not automatically eliminate security requirements or guarantee zero packet loss. Appropriate firewalling, URL filtering, malware protection, routing policies, and monitoring may still be required. The design should also consider whether traffic must remain centralized for regulatory, security, or inspection reasons before selecting local breakout as the preferred architecture.

Question 207. A cloud application requires a maximum one-way latency threshold and a minimum availability target. Which design artifact should document these requirements?

1. DNS zone file
2. Interface description
3. Connectivity service-level requirements or SLA
4. BGP router ID

Correct Answer: 3. Connectivity service-level requirements or SLA

Explanation :-

Latency and availability requirements should be explicitly documented as service-level requirements or SLA criteria. These requirements provide measurable targets against which a cloud connectivity service can be evaluated. Bandwidth alone does not describe the complete performance of a network connection. A service may provide high throughput but still fail an application’s latency or availability requirements. Documenting the requirements also helps engineers compare different connectivity services and establish appropriate monitoring. Depending on the provider, the SLA may include availability, latency, packet loss, or other measurable service characteristics.

Question 208. An enterprise advertises multiple internal prefixes toward a cloud provider but wants to permit only the application-specific subnet. Which configuration mechanism should be used?

1. Increase the BGP hold timer
2. Apply an outbound prefix-list or route policy
3. Change the OSPF process ID
4. Disable IPsec keepalives

Correct Answer: 2. Apply an outbound prefix-list or route policy

Explanation :-

An outbound prefix-list or route policy can restrict which prefixes are advertised to a BGP neighbor. This is an important control when an enterprise connects to a cloud provider and wants to expose only specific networks. The policy can explicitly permit the application subnet and deny other prefixes. BGP timers affect session maintenance, while OSPF process IDs and IPsec keepalives serve different purposes. Engineers should validate the resulting advertised routes after applying the policy to ensure that required prefixes are permitted and unintended networks are not leaked.

Question 209. A cloud-connected router receives two valid BGP paths for the same destination. The engineer wants one path to be preferred for outbound traffic from the enterprise regardless of the remote AS-path length when the relevant local policy is applied. Which BGP attribute is commonly used for this purpose?

1. Local preference
2. MED received from an unrelated AS
3. BGP router ID
4. OSPF cost

Correct Answer: 1. Local preference

Explanation :-

BGP local preference is commonly used to influence the preferred outbound path within an autonomous system. A higher local-preference value is preferred over a lower value during BGP best-path selection, assuming the applicable preceding criteria do not determine a different result. This makes local preference useful when an enterprise has multiple cloud or provider connections and wants to control which exit path is preferred. MED and AS-path length have different roles, while OSPF cost is used by OSPF rather than BGP. Policies should be designed carefully to avoid unintended routing changes.

Question 210. A cloud VPN is established, but counters show that encrypted packets are leaving the enterprise while no decrypted packets are being received. Which troubleshooting area should be examined first?

1. Local DNS configuration
2. OSPF area numbering
3. BGP local preference only
4. Remote return path, IPsec selectors, and remote VPN processing

Correct Answer: 4. Remote return path, IPsec selectors, and remote VPN processing

Explanation :-

If outbound encrypted traffic is increasing but inbound decrypted traffic is absent, the engineer should investigate the remote side of the VPN path. Possible causes include incorrect traffic selectors, an incorrect return route, remote security policy, NAT behavior, or problems processing the encrypted packets. A tunnel being established does not prove that bidirectional application traffic is functioning. IPsec counters can help determine whether packets are being encrypted and decrypted. Troubleshooting should therefore examine both VPN state and end-to-end forwarding rather than focusing only on tunnel establishment.

Question 211. A network engineer needs to verify whether a cloud BGP neighbor is advertising a particular prefix to the enterprise router. Which information is most relevant?

1. BGP routes received from the neighbor
2. OSPF interface timers
3. IPsec tunnel lifetime only
4. Ethernet duplex settings

Correct Answer: 2. BGP routes received from the neighbor

Explanation :-

BGP received-route information allows an engineer to determine whether a neighbor has advertised a specific prefix and how the local router is processing that advertisement. This is useful when a cloud route is expected but does not appear in the routing table. If the prefix is received but is not installed, the engineer can then examine BGP best-path selection, administrative distance, next-hop reachability, or other routing conditions. OSPF timers, IPsec lifetime, and Ethernet duplex settings address different layers or protocols and do not directly verify BGP route advertisements.

Question 212. An enterprise wants to prevent a cloud provider from becoming the default Internet exit while still accepting specific private cloud prefixes through BGP. Which approach is appropriate?

1. Shut down the BGP session
2. Reject all routes from the cloud provider
3. Apply inbound routing policy that filters the default route while permitting required prefixes
4. Disable routing on the cloud-facing interface

Correct Answer: 3. Apply inbound routing policy that filters the default route while permitting required prefixes

Explanation :-

Inbound BGP policy can selectively control which routes are accepted from a cloud provider. If the cloud provider advertises a default route but the enterprise uses another Internet exit, the default route can be filtered while required private cloud prefixes remain permitted. This provides granular control rather than disabling the entire BGP session or rejecting all routes. The resulting routing table should be verified to ensure that the expected cloud prefixes remain available and that the unwanted default route is not installed.

Question 213. A company requires cloud connectivity to survive the loss of an entire physical facility hosting one connectivity provider. Which redundancy strategy provides stronger isolation from that failure?

1. Use two logical tunnels through the same facility
2. Increase the bandwidth of the existing circuit
3. Use two sessions on the same physical device
4. Use geographically or physically diverse connectivity paths

Correct Answer: 4. Use geographically or physically diverse connectivity paths

Explanation :-

Physical diversity reduces the probability that a single facility-level failure will interrupt all connectivity. Two logical tunnels or routing sessions that ultimately depend on the same facility, provider device, or physical path may still fail together. Geographic or physical diversity can involve different facilities, paths, provider devices, or providers depending on the required resilience. The design should identify the actual failure domains rather than simply counting the number of tunnels or BGP sessions. This is especially important when high availability is a formal cloud connectivity requirement.

Question 214. A cloud security architecture requires traffic entering from the Internet to be inspected before reaching private application networks. Which traffic direction is being addressed?

1. North-south inbound traffic
2. East-west internal traffic
3. BGP control-plane traffic
4. OSPF database synchronization

Correct Answer: 2. North-south inbound traffic

Explanation :-

North-south traffic describes traffic entering or leaving the broader cloud environment. Internet users accessing private or protected cloud applications represent inbound north-south traffic. Security architectures commonly place firewalls, load balancers, intrusion prevention, or other inspection controls along this path before traffic reaches protected application segments. East-west traffic instead describes lateral communication between internal workloads or networks. BGP and OSPF database exchanges are routing-control traffic and are not classifications of application traffic direction. Correctly identifying the direction helps determine where security inspection and routing policies should be applied.

Question 215. An enterprise has an IPsec cloud tunnel with a functioning security association, but applications fail only when packets exceed a certain size. Which additional test is most useful?

1. Test path MTU behavior with appropriately sized packets
2. Change the BGP autonomous system number
3. Disable route filtering
4. Increase the OSPF dead interval

Correct Answer: 1. Test path MTU behavior with appropriately sized packets

Explanation :-

Testing different packet sizes can help identify path-MTU problems across an IPsec tunnel. Encryption encapsulation adds overhead, which reduces the effective packet size that can be transmitted without fragmentation. If larger packets fail while smaller packets succeed, engineers should investigate MTU, fragmentation, Path MTU Discovery, and TCP MSS behavior. Changing BGP AS numbers or OSPF timers does not directly address a packet-size-dependent forwarding problem. MTU troubleshooting should consider both the physical interface and tunnel overhead as well as any intermediate devices that may block fragmentation or ICMP messages.

Question 216. A cloud application is sensitive to jitter, but the available WAN paths have different performance characteristics. Which design approach allows the network to select a path based on measured application-relevant performance?

1. Static DNS resolution
2. Application-aware SD-WAN policy
3. Increasing the BGP AS-path length
4. Disabling performance measurements

Correct Answer: 3. Application-aware SD-WAN policy

Explanation :-

Application-aware SD-WAN policies can evaluate measured network characteristics such as latency, jitter, and packet loss when selecting paths. This allows the network to respond to changing transport conditions instead of relying solely on static routing. For a jitter-sensitive application, the policy can identify paths that meet defined performance thresholds and steer traffic accordingly. BGP AS-path manipulation serves a different purpose and does not directly measure real-time application performance. Effective policy design should include realistic thresholds and consider what should happen when no available path meets the application’s preferred performance criteria.

Question 217. A cloud provider advertises a prefix, but the enterprise router does not install it because the BGP next hop is unreachable. What should the engineer verify?

1. DNS search domains
2. OSPF process name
3. Reachability to the BGP next-hop address
4. IPsec encryption key length only

Correct Answer: 2. Reachability to the BGP next-hop address

Explanation :-

A BGP route generally requires a reachable next hop before it can be used for forwarding. If the advertised prefix is present in BGP but cannot be installed or used because the next hop is unresolved, the engineer should verify the routing path to that next-hop address. This may involve checking the routing table, connected routes, static routes, OSPF, BGP next-hop behavior, or appropriate next-hop modification. DNS settings and IPsec key length do not normally resolve a BGP next-hop reachability problem. This is a common distinction between receiving a route and being able to use it.

Question 218. An enterprise wants to connect a branch to a SaaS application through Cisco SD-WAN while selecting the transport that provides the best measured performance for that application. Which capability is most relevant?

1. Manual static routing only
2. OSPF route summarization
3. SD-WAN application-aware path selection
4. Disabling application classification

Correct Answer: 4. SD-WAN application-aware path selection

Explanation :-

Application-aware path selection allows Cisco SD-WAN to make forwarding decisions based on the identified application and the measured characteristics of available paths. This is particularly useful for SaaS connectivity because different transports may have different latency, loss, and jitter characteristics. Rather than sending all traffic through a fixed path, the policy can select a path that meets the application’s requirements. Static routing and OSPF summarization do not provide the same application-aware decision process. Application classification is important because the policy needs to identify the traffic to which the performance requirements apply.

Question 219. An engineer needs to confirm whether an enterprise router is advertising a specific internal subnet to a cloud BGP neighbor. Which information should be examined?

1. BGP advertised routes for that specific neighbor
2. OSPF LSDB for an unrelated area
3. IPsec anti-replay counters
4. DNS resolver statistics

Correct Answer: 3. BGP advertised routes for that specific neighbor

Explanation :-

BGP advertised-route information for a specific neighbor directly shows which prefixes the local router is sending toward that peer. This is useful for verifying outbound route policy and confirming that a required enterprise subnet is actually being advertised to the cloud provider. If the subnet is absent, the engineer can investigate route filtering, route-map logic, network statements, redistribution, or other mechanisms responsible for originating the prefix. OSPF LSDB information and IPsec counters may help with other troubleshooting tasks but do not directly confirm BGP advertisements to a particular neighbor.

Question 220. A cloud connectivity design requires encryption for traffic between two sites, dynamic route exchange, and the ability to recover automatically from a tunnel failure. Which combination best addresses these requirements?

1. Static routes, no encryption, and manual recovery
2. IPsec, dynamic routing, and redundant or failover-capable connectivity
3. DNS forwarding, OSPF disabled, and a single tunnel
4. NAT only, without routing redundancy

Correct Answer: 1. Static routes, no encryption, and manual recovery

Explanation :-

A design requiring encrypted traffic, dynamic route exchange, and automatic recovery needs mechanisms that directly support each requirement. IPsec provides encryption, a dynamic routing protocol such as BGP or OSPF can exchange reachability information, and redundant connectivity or appropriate failover mechanisms can provide resilience. Static routing without encryption does not satisfy the stated requirements and also introduces manual dependencies for route changes. When these technologies are combined, engineers should validate route convergence, tunnel behavior, security policies, and failure detection to ensure that recovery operates as designed.