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Cisco 300-420 exam, also known as Designing Cisco Enterprise Networks (ENSLD), is a professional-level certification exam that validates your skills and knowledge in designing enterprise-level network solutions. 300-420 exam is designed for network engineers, architects, and designers who are responsible for designing and implementing complex enterprise networks.

To pass the Cisco 300-420 exam, you must have a strong understanding of network design principles and concepts, as well as hands-on experience with enterprise-level network solutions. You should also have a good understanding of Cisco network technologies, including Cisco IOS, Cisco Nexus, and Cisco ACI.

Cisco 300-420 Certification is highly valued in the IT industry and is recognized by many employers as a mark of expertise in network design. Individuals who hold the certification are well-positioned to pursue career opportunities in network design, including roles such as network engineer, network architect, and network consultant.

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Cisco Designing Cisco Enterprise Networks Sample Questions (Q161-Q166):

NEW QUESTION # 161

Refer to the exhibit. An architect working for a service provider with an employee ID: 4763:44:876 must design a Layer 2 VPN solution that supports:
* transparency of service provider devices
* direct communication between CE routers attached to the same VLAN
Which solution must the design include?

A. multiple VPWS
B. single VPWS
C. multiple VPLS
D. single VPLS

Answer: D

NEW QUESTION # 162
Refer to the exhibit.

An engineer must design a WAN solution so that ISP-1 is always preferred over ISP-2. The path via ISP-2 is considered as a backup and must be used only when the path to ISP-1 is down. Which solution must the engineer choose?

A. R1:
- Routes advertised to ISP-1: 0x AS-path prepend
- Routes received from ISP-1: HIGH local-preference
- Routes advertised to R2: no action
- Routes received from R2: community NO-EXPORT
R2:
- Routes advertised to ISP-2:5x AS-path prepend
- Routes received from ISP-2: LOW local-preference
- Routes advertised to R1: community NO-ADVERTISE
- Routes received from R1: no action
B. R1:
- Routes advertised to ISP-1: 0x AS-path prepend
- Routes received from ISP-1: LOW local-preference
- Routes advertised to R2: community NO-ADVERTISE
- Routes received from R2: no action
R2:
- Routes advertised to ISP-2: 5x AS-path prepend
- Routes received from ISP-2: HIGH local-preference
- Routes advertised to R1: no action
- Routes received from R1: community NO-ADVERTISE
C. R1:
- Routes advertised to ISP-1: 5x AS-path prepend
- Routes received from ISP-1: LOW local-preference
- Routes advertised to R2: community NO-ADVERTISE
- Routes received from R2: no action
R2:
- Routes advertised to ISP-2: 0x AS-path prepend
- Routes received from ISP-2: HIGH local-preference
- Routes advertised to R1: community NO-EXPORT
- Routes received from R1: no action
D. R1:
- Routes advertised to ISP-1: 0x AS-path prepend
- Routes received from ISP-1: HIGH local-preference
- Routes advertised to R2: community NO-EXPORT
- Routes received from R2: no action
R2:
- Routes advertised to ISP-2: 5x AS-path prepend
- Routes received from ISP-2: LOW local-preference
- Routes advertised to R1: no action
- Routes received from R1: no action

Answer: D

NEW QUESTION # 163
A company uses cloud-based applications for voice and video calls, file sharing, content sharing, and messaging. During business hours, these applications randomly become slow and unresponsive. However, other applications work smoothly with the current applied QoS polices. Which solution must the company choose to resolve the issue?

A. Identify the applications and reserve the required bandwidth on the perimeter routers.
B. Identify the port used by each application and apply a minimum bandwidth guarantee.
C. Identify the application ports, create groupings, and rate-limit the required bandwidth.
D. Identify the applications with NBAR2 and allocate the required bandwidth accordingly.

Answer: D

Explanation:
using NBAR to identify application and bandwidth usage, then adjust existing QoS polices would be a more simple option. Of course, B is still ok if the network admin know all traffic and bandwidth consumption by other tools, say netflow. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/qos_nbar/configuration/15-mt/qos-nbar-15-mt-book/nbar-protocl-discvry.html#GUID-ED1AEDA1-AE69-45C3-A77E-2AF881CA9C36
https://www.cisco.com/c/en/us/products/ios-nx-os-software/network-based-application-recognition-nbar/index.html

NEW QUESTION # 164
Refer to the exhibit.

Refer to the exhibit. AS65533 and AS65530 are announcing a partial Internet routing table as well as their IP subnets. An architect must create a design that ensures AS64512 become a transit AS. Which filtering solution must the architect choose?

A. Next-hop
B. No-advertise
C. Maximum-prefix
D. No Export

Answer: D

NEW QUESTION # 165
Exhibit:

Refer to the exhibit. An engineer is designing a Layer 2 campus network. The design must support fast convergence and leverage as much bandwidth as possible between layers. Distribution switches do support VSS; unfortunately, not all routing protocols are available for use due to license limitations. Which solution must the engineer choose?

A. ECMP
B. EtherChannel
C. RSTP
D. MEC

Answer: D

NEW QUESTION # 166
......

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