Free PDF 2024 Pass-Sure 300-440: Designing and Implementing Cloud Connectivity Popular Exams

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Cisco 300-440 Exam Syllabus Topics:

Topic	Details
Topic 1	SD-WAN Cloud Connectivity: Questions about configuration of SD-WAN-based cloud connectivity using Cisco infrastructure appear in this topic. Furthermore, it discusses configuration of Cisco SD-WAN OnRamp, configuration for connecting to a SaaS cloud provider, and configuration of Cisco SD-WAN policies to address traffic.
Topic 2	Design: Questions about cloud-native security policies for AWS, Azure, and Google Cloud appear in this topic. It also recommends connectivity models that ensure high availability, resiliency, SLAs, and reliability. Furthermore, the topic delves into connectivity models based on network architecture requirements. The topic further discusses factors including bandwidth, QoS, dedicated vs shared connections and multi-homing.
Topic 3	Architecture Models: In this topic different aspects of connectivity to cloud providers are discussed. It focuses on AWS, Azure, and Google Cloud. Moreover, the topic explains private connectivity to leading cloud providers and connectivity options for Software as a Service (SaaS) cloud providers.
Topic 4	Operation: The topic delves into diagnosis of IPsec-based secure cloud connectivity between an on-premises native Cloud endpoints and Cisco IOS XE router. It also explains the diagnosis of routing issues on Cisco IOS XE routers, and diagnosis of Cisco SD-WAN policy issues, focusing on all the traffic.
Topic 5	IPsec Cloud Connectivity: The configuration of IPsec-based secure cloud connectivity is one of the focal points of this topic. Additionally, it delves into configuration of IPsec-based secure cloud connectivity between an on-premises Cisco IOS XE router and native Azure, AWS, and Google Cloud endpoints. Lastly, the topic discusses configuration of routing on Cisco IOS XE routers.

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Cisco Designing and Implementing Cloud Connectivity Sample Questions (Q30-Q35):

NEW QUESTION # 30
Refer to the exhibit.

While troubleshooting an IPsec connection between a Cisco WAN edge router and an Amazon Web Services (AWS) endpoint, a network engineer observes that the security association status is active, but no traffic flows between the devices What is the problem?

A. wrong ISAKMP policy
B. identity mismatch
C. IKE version mismatch
D. wrong encryption

Answer: B

Explanation:
An identity mismatch occurs when the local and remote identities configured on the IPsec peers do not match.
This can prevent the establishment of an IPsec tunnel or cause traffic to be dropped by the IPsec policy. In this case, the network engineer should verify that the local and remote identities configured on the Cisco WAN edge router and the AWS endpoint match the values expected by each peer. The identities can be an IP address, a fully qualified domain name (FQDN), or a distinguished name (DN). The identities are exchanged during the IKE phase 1 negotiation and are used to authenticate the peers. If the identities do not match, the peers will reject the IKE proposal and the IPsec tunnel will not be established or will be torn down.
References :=
Configure IOS-XE Site-to-Site VPN Connection to Amazon Web Services, Topic: Troubleshooting Designing and Implementing Cloud Connectivity (ENCC) v1.0, Module 3: Implementing Cloud Connectivity, Lesson 2: Implementing Cisco SD-WAN Cloud OnRamp for IaaS, Topic:
Troubleshooting Cisco SD-WAN Cloud OnRamp for IaaS
Cisco IOS Security Configuration Guide, Release 15M&T, Chapter: Configuring IPsec Network Security, Topic: Configuring IPsec Identity and Peer Addressing

NEW QUESTION # 31
A company with multiple branch offices wants a connectivity model to meet its network architecture requirements. The company focuses on ensuring low latency and efficient routing for its critical business applications. Which connectivity model meets these requirements?

A. point-to-point topology using dedicated leased lines and static routing
B. hub-and-spoke topology with SD-WAN technology, using dynamic routing and OSPF as the routing protocol
C. fully meshed topology with SD-WAN technology, using dynamic routing and BGP as the routing protocol
D. star topology with internet-based VPN connections and static routing

Answer: C

Explanation:
A fully meshed topology with SD-WAN technology, using dynamic routing and BGP as the routing protocol, meets the requirements of the company because it provides the following benefits:
It allows direct and secure connectivity between any two branch offices, without the need for a central hub or intermediary devices12. This reduces the latency and improves the performance of the critical business applications.
It leverages SD-WAN technology to optimize the traffic flow and application quality of service (QoS) across the WAN13. SD-WAN can dynamically select the best path for each application based on the network conditions and policies13. SD-WAN can also provide redundancy, security, and visibility for the WAN13.
It uses dynamic routing and BGP as the routing protocol to exchange routing information and establish connectivity between the branch offices14. BGP is a scalable and flexible protocol that can support multiple address families, such as IPv4 and IPv6, and multiple routing policies, such as local preference and route filtering14. BGP can also enable seamless integration with the cloud service providers (CSPs) and internet service providers (ISPs)14.
References :=
1: Designing and Implementing Cloud Connectivity (ENCC, Track 1 of 5) (Cisco U. login required)
2: Cisco SD-WAN Design Guide

NEW QUESTION # 32
Which architecture model establishes internet-based connectivity between on-premises networks and AWS cloud resources?

A. That employs AWS Direct Connect for a dedicated network connection and uses private IP addresses tor secure communication.
B. That relies on AWS Elastic Load Balancing (ELB) for traffic distribution and uses SSL/TLS encryption for secure data transmission.
C. That uses Amazon CloudFrontfor caching and distributing content globally and uses HTTPS for secure data transfer.
D. That establishes an iPsec VPN tunnel with Internet Key Exchange (IKE) for secure key negotiation and encrypted data transmission

Answer: D

Explanation:
The architecture model that establishes internet-based connectivity between on-premises networks and AWS cloud resources is the one that establishes an iPsec VPN tunnel with Internet Key Exchange (IKE) for secure key negotiation and encrypted data transmission. This model is also known as the VPN CloudHub model12. It allows multiple remote sites to connect to the same virtual private gateway in AWS, creating a hub-and-spoke topology1. The VPN CloudHub model provides the following benefits12:
It enables secure communication between remote sites and AWS over the public internet, using encryption and authentication protocols such as IPsec and IKE.
It supports dynamic routing protocols such as BGP, which can automatically adjust the routing tables based on the availability and performance of the VPN tunnels.
It allows for redundancy and load balancing across multiple VPN tunnels, increasing the reliability and throughput of the connectivity.
It simplifies the management and configuration of the VPN connections, as each remote site only needs to establish one VPN tunnel to the virtual private gateway in AWS, rather than multiple tunnels to different VPCs or regions.
The other options are not correct because they do not establish internet-based connectivity between on-premises networks and AWS cloud resources. Option B relies on AWS Elastic Load Balancing (ELB) for traffic distribution and uses SSL/TLS encryption for secure data transmission. However, ELB is a service that distributes incoming traffic across multiple targets within a VPC, not across different networks3. Option C employs AWS Direct Connect for a dedicated network connection and uses private IP addresses for secure communication. However, AWS Direct Connect is a service that establishes a private connection between on-premises networks and AWS, bypassing the public internet4. Option D uses Amazon CloudFront for caching and distributing content globally and uses HTTPS for secure data transfer. However, Amazon CloudFront is a service that delivers static and dynamic web content to end users, not to on-premises networks5.
References:
1: Designing and Implementing Cloud Connectivity (ENCC, Track 1 of 5)
2: Cisco ASA Site-to-Site VPN
3: What Is Elastic Load Balancing?
4: What is AWS Direct Connect?

NEW QUESTION # 33
Which approach does a centralized internet gateway use to provide connectivity to SaaS applications?

A. A dedicated, private connection is established between the on-premises infrastructure and the SaaS provider data center using colocation services.
B. Internet traffic from the on-premises infrastructure is routed through a centralized gateway that provides access controls for SaaS applications.
C. VPN connections are used to provide secure access to SaaS applications from the on-premises infrastructure.
D. A cloud-based proxy server routes traffic from the on-premises infrastructure to the SaaS provider data center.

Answer: B

Explanation:
A centralized internet gateway is a network design that routes all internet-bound traffic from the on-premises infrastructure through a single point of egress, typically located at the data center or a regional hub1. This approach allows the enterprise to apply consistent security policies and access controls for SaaS applications, as well as optimize the bandwidth utilization and performance of the WAN links2. A centralized internet gateway can use various technologies to provide connectivity to SaaS applications, such as proxy servers, firewalls, web filters, and WAN optimizers3. However, a cloud-based proxy server (option A) is not a part of the centralized internet gateway, but rather a separate service that can be used to route traffic from the on-premises infrastructure to the SaaS provider data center4. VPN connections (option C) and dedicated, private connections (option D) are also not related to the centralized internet gateway, but rather alternative ways of providing secure and reliable access to SaaS applications from the on-premises infrastructure5. Therefore, the correct answer is option B, which describes the basic function of a centralized internet gateway. References := 1: Designing and Implementing Cloud Connectivity (ENCC) v1.0, Module 1:
Cloud Connectivity Overview, Lesson 1: Cloud Connectivity Concepts, Topic: Centralized Internet Gateway 2: Cloud OnRamp for SaaS, Cisco IOS XE Catalyst SD-WAN Release 17.3.1a and Later, Topic:
Centralized Internet Gateway 3: Architect and optimize your internet traffic with Azure routing preference, Microsoft Azure Blog, Topic: Routing via the premium Microsoft global network 4: What is SaaS? Softwareas a Service, Microsoft Azure, Topic: How SaaS works 5: How an application gateway works, Microsoft Learn, Topic: Application gateway components

NEW QUESTION # 34
An engineer must enable the OMP advertisement of BGP routes for a specific VRF instance on a Cisco IOS XE SD-WAN device. What should be configured after the global address-family ipv4 is configured?

A. Disable bgp advertisement.
B. Set the VRF-specific route advertisements.
C. Enter sdwan mode.
D. Enable bgp advertisement.

Answer: D

Explanation:
To enable the OMP advertisement of BGP routes for a specific VRF instance on a Cisco IOS XE SD-WAN device, the engineer must first configure the global address-family ipv4 and then enable bgp advertisement under the vrf definition. This will allow the device to advertise the BGP routes learned from the cloud provider to the OMP control plane, which will then distribute them to the other SD-WAN devices in the overlay network1 References := 1: Designing and Implementing Cloud Connectivity (ENCC) v1.0, Module 3: Implementing Cloud Connectivity, Lesson 3: Configuring IPsec VPN from Cisco IOS XE to AWS, Topic: Configuring BGP on the Cisco IOS XE Device, Page 3-24.

NEW QUESTION # 35
......

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