Exam 300-420 Duration | 100% Free Useful Designing Cisco Enterprise Networks Training Questions

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Cisco 300-420 Exam Syllabus Topics:

Section	Weight	Objectives
WAN for Enterprise Networks	20%	- Design WAN connectivity - Design QoS for WAN - Design SD-WAN solution
Advanced Enterprise Campus Networks	25%	- Design Layer 2 and Layer 3 campus networks - Design for high availability - Design campus network services (QoS, multicast, etc.)
Advanced Addressing and Routing Solutions	25%	- Determine IPv6 migration strategy - Create structured addressing designs - Create stable, secure, and scalable routing designs for Layer 3
Services	10%	- Design network management - Design end-to-end QoS policy
Enterprise Campus Security	20%	- Design network access control - Design network security

>> Exam 300-420 Duration <<

Quiz 2026 300-420: Latest Exam Designing Cisco Enterprise Networks Duration

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Cisco Designing Cisco Enterprise Networks Sample Questions (Q76-Q81):

NEW QUESTION # 76

Refer to the exhibit. A network engineer working for a private service provider with an employee ID: 4670:71:
451 must design a BGP solution based on:
* All traffic originating from AS100 must pass through AS200 to reach the NTP and DHCP server
* When a link failure occurs between R3 and R4, traffic must follow the R2-R9 link to reach the NTP and DHCP server.
Which solution must the design include?

A. Router R3 applies a local preference of 200 for R1. R2. R9. and R11 routers to reach the data center.
B. Routers R3 and R10 advertise a lower local preference for outgoing traffic and a higher AS-PATH value for incoming traffic.
C. Routers R3 and R10 advertise an IGP metric into BGP during redistribution in both directions.
D. Router R6 influences the paths of R9 and R11 to the DC with a higher AS-PATH value.

Answer: A

NEW QUESTION # 77
An architect must address sustained congestion on the access and distribution uplink of network.
QoS has already been implemented and optimized, but it is no longer effective in ensuring optimal network performance.
Which two solutions should the architect use to improver network performance? (Choose two)

A. Implement higher-speed uplink interfaces
B. Utilize random early detection to manage queues
C. Bundle additional uplinks into logical EtherChannels
D. Configure selective packet discard to drop noncritical network traffic.
E. Reconfigure QoS based on the IntServ model

Answer: A,C

NEW QUESTION # 78
Drag and drop the properties from the left onto the protocols they describe on the right.

Answer:

Explanation:

NEW QUESTION # 79

Refer to the exhibit. A customer has two eBGP peerings from a single CE router toward two service providers. The customer has hired an architect to design a solution to ensure certain traffic enters the customer
' s network through interface g¡g0/0. Which solution must the architect include in the design?

A. Prepend additional AS on the AS path toward the preferred service provider.
B. Break aggregated routes into longer prefixes and advertise to the preferred service provider.
C. Set a higher local preference to the preferred service provider path.
D. Advertise a lower MED value toward the less preferred service provider.

Answer: B

Explanation:
Advertising more-specific prefixes toward the preferred service provider is the correct way to influence inbound traffic to enter through a chosen CE interface. BGP inbound path control is indirect: the enterprise cannot set local preference inside remote autonomous systems, and MED is honored only under specific provider policies. The most deterministic option available to the customer is to advertise a longer-prefix route to the preferred provider because Internet and BGP route selection generally prefer the longest matching prefix before BGP path attributes are considered. If the aggregate is advertised to both providers but a more- specific route is advertised to the provider connected to gig0/0, return traffic for that more- specific destination is attracted through that interface. Lowering MED toward the less preferred provider is the opposite of the desired effect. AS-path prepending toward the preferred provider would make that path less attractive. Local preference affects outbound path selection inside the local AS, not inbound traffic from external networks. Reference topics: BGP inbound traffic engineering, longest-prefix match, route aggregation, AS-path prepending, MED, local preference.

NEW QUESTION # 80
Which two best practices must be followed when designing an out-of-band management network? (Choose two.)

A. Back up data using the management network
B. Ensure that the management network is a backup to the data network
C. Ensure network isolation
D. Facilitate network integration
E. Enforce access control

Answer: C,E

Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Security/SAFE_RG/SAFE_rg/chap9.html

NEW QUESTION # 81
......

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