300-440 Designing and Implementing Cloud Connectivity (ENCC) Dumps
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Sample Question 4
An engineer must configure an IPsec tunnel to the cloud VPN gateway. Which Two actionssend traffic into the tunnel? (Choose two.)
A. Configure access lists that match the interesting user traffic. B. Configure a static route. C. Configure a local policy in Cisco vManage. D. Configure an IPsec profile and match the remote peer IP address. E. Configure policy-based routing.
Answer: A,E
Explanation:
To send traffic into an IPsec tunnel to the cloud VPN gateway, the engineer must configure
two actions:
Configure access lists that match the interesting user traffic. This is the traffic that
needs to be encrypted and sent over the IPsec tunnel. The access lists are applied
to the crypto map that defines the IPsec parameters for the tunnel.
Configure policy-based routing (PBR). This is a technique that allows the engineer
to override the routing table and forward packets based on a defined policy. PBR
can be used to send specific traffic to the IPsec tunnel interface, regardless of the
destination IP address. This is useful when the cloud VPN gateway has a dynamic
IP address or when multiple cloud VPN gateways are available for load balancing
or redundancy. References:
Designing and Implementing Cloud Connectivity (ENCC) v1.0, Module 3:
Implementing Cloud Connectivity, Lesson 3: Implementing IPsec VPNs to the
Cloud, Topic: Configuring IPsec VPNs on Cisco IOS XE Routers
Security for VPNs with IPsec Configuration Guide, Cisco IOS XE, Chapter:
An engineer is implementing a highly securemultitierapplication in AWS that includes S3.RDS, and some additional private links. What is critical to keep the traffic safe?
A. VPC peering and bucket policies B. specific routing and bucket policies C. EC2 super policies and specific routing policies D. gateway load balancers and specific routing policies
Answer: B
Explanation:
A highly secure multitier application in AWS that includes S3, RDS, and some additional
private links requires specific routing and bucket policies to keep the traffic safe. The
reasons are as follows:
Specific routing policies are needed to ensure that the traffic between the tiers is
routed through the private links, which provide secure and low-latency connectivity
between AWS services and on-premises resources12. The private links can also
prevent the exposure of the data and the application logic to the public internet12.
Bucket policies are needed to control the access to the S3 buckets that store the
application data34. Bucket policies can specify the conditions under which the
requests are allowed or denied, such as the source IP address, the encryption
status, the request time, etc.34. Bucket policies can also enforce encryption in
transit and at rest for the data in S334.
References :=
1: AWS PrivateLink
2: AWS PrivateLink FAQs
3: Using Bucket Policies and User Policies
4: Bucket Policy Examples
Sample Question 6
What is the role of service providers to establish private connectivity between on-premisesnetworks and Google Cloud resources?
A. facilitate direct, dedicated network connections through Google Cloud Interconnect B. enable intelligent routing and dynamic path selection using software-defined networking C. provide end-to-end encryption for data transmission using native IPsec D. accelerate content delivery through integration with Google Cloud CDN
Answer: A
Explanation: The role of service providers to establish private connectivity between on- premises networks and Google Cloud resources is to facilitate direct, dedicated network
connections through Google Cloud Interconnect. Google Cloud Interconnect is a service
that allows customers to connect their on-premises networks to Google Cloud through a
service provider partner. This provides low latency, high bandwidth, and secure
connectivity to Google Cloud services, such as Google Compute Engine, Google Cloud
Storage, and Google BigQuery. Google Cloud Interconnect also supports hybrid cloud
scenarios, such as extending on-premises networks to Google Cloud regions, or
connecting multiple Google Cloud regions together. Google Cloud Interconnect offers two
types of connections: Dedicated Interconnect and Partner Interconnect. Dedicated
Interconnect provides physical connections between the customer’s network and Google’s
network at a Google Cloud Interconnect location. Partner Interconnect provides virtual
connections between the customer’s network and Google’s network through a supported
service provider partner. Both types of connections use VLAN attachments to establish
private connectivity to Google Cloud Virtual Private Cloud (VPC) networks. References:
Designing and Implementing Cloud Connectivity (ENCC) v1.0
[Google Cloud Interconnect Overview]
[Google Cloud Interconnect Documentation]
Sample Question 7
A company with multiple branch offices wants a suitable connectivity model to meet thesenetwork architecture requirements:• high availability• quality of service (QoS)• multihoming• specific routing needsWhich connectivity model meets these requirements?
A. hub-and-spoke topology using MPLS with static routing and dedicated bandwidth forQoS B. star topology with internet-based VPN connections and BGP for routing C. hybrid topology that combines MPLS and SD-WAN D. fully meshed topology with SD-WAN technology using dynamic routing and prioritizedtraffic for QoS
Answer: D
Explanation:
A fully meshed topology with SD-WAN technology using dynamic routing and prioritized
traffic for QoS meets the network architecture requirements of the company. A fully
meshed topology provides high availability by eliminating single points of failure and
allowing multiple paths between branch offices. SD-WAN technology enables multihoming
by supporting multiple transport options, such as MPLS, internet, LTE, etc. SD-WAN also
provides QoS by applying policies to prioritize traffic based on application, user, or network
conditions. Dynamic routing allows the SD-WAN solution to adapt to changing network
conditions and optimize the path selection for each traffic type. A fully meshed topology
with SD-WAN technology can also support specific routing needs, such as segment
routing, policy-based routing, or application-aware routing. References:
Designing and Implementing Cloud Connectivity (ENCC) v1.0
[Cisco SD-WAN Design Guide]
[Cisco SD-WAN Configuration Guide]
Sample Question 8
A company has multiple branch offices across different geographic locations and acentralized data center. The company plans to migrate Its critical business applications tothe public cloud infrastructure that is hosted in Microsoft Azure. The company requires highavailability, redundancy, and low latency for its business applications. Which connectivitymodel meets these requirements?
A. ExpressRoute with private peering using SDCI B. hybrid connectivity with SD-WAN C. AWS Direct Connect with dedicated connections D. site-to-site VPN with Azure VPN gateway
Answer: A
Explanation:
The connectivity model that meets the requirements of high availability, redundancy, and
low latency for the company’s business applications is ExpressRoute with private peering
using SDCI.
ExpressRoute is a service that provides a dedicated, private, and high-bandwidth
connection between the customer’s on-premises network and Microsoft Azure
cloud network1.
Private peering is a type of ExpressRoute circuit that allows the customer to
access Azure services that are hosted in a virtual network, such as virtual
machines, storage, and databases2.
SDCI (Secure Data Center Interconnect) is a Cisco solution that enables secure
and scalable connectivity between multiple data centers and cloud providers, using
technologies such as MPLS, IPsec, and SD-WAN3.
By using ExpressRoute with private peering and SDCI, the company can achieve
the following benefits:
References:
What is Azure ExpressRoute?
Azure ExpressRoute peering
Cisco Secure Data Center Interconnect
ExpressRoute circuit and routing domain
Sample Question 9
Which feature is unique to Cisco SD-WAN IPsec tunnels compared to native IPsec VPNtunnels?
A. real-time dynamic path selection B. tunneling protocols C. end-to-end encryption D. authentication mechanisms
Answer: A
Explanation: Cisco SD-WAN IPsec tunnels are different from native IPsec VPN tunnels in
several ways. One of the unique features of Cisco SD-WAN IPsec tunnels is that they
support real-time dynamic path selection, which means that they can automatically choose
the best path for each application based on the network conditions and policies. This
feature improves the performance, reliability, and efficiency of the network traffic. Native
IPsec VPN tunnels, on the other hand, do not have this capability and rely on static routing
or manual configuration to select the path for each tunnel. This can result in suboptimal
performance, increased latency, and higher costs. References := Traditional IPsec Versus
Cisco SD-WAN IPsec, SD-WAN vs IPsec VPN’s - What’s the difference?, SD-WAN vs.
VPN: How Do They Compare?, Traditional IPSEC Versus SD-WAN IPSEC
Exam Code: 300-440Exam Name: Designing and Implementing Cloud Connectivity (ENCC)Last Update: May 13, 2024Questions: 38
