Reliable 300-420 Exam Review | New 300-420 Test Preparation

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Prerequisites for Cisco 300-420 Exam

The target audience for this certification exam is those individuals who work as a Network Engineer, a Network Design Engineer, and a System Administrator. It is also designed for any professional in the field of IT looking to validate their knowledge and skills in enterprise networking & security. This Cisco test does not have any official prerequisites, so the potential candidates do not need to fulfill the working experience requirement or hold any certificates. However, the applicants must develop competence in the exam topics before taking it.

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Cisco Designing Cisco Enterprise Networks Sample Questions (Q351-Q356):

NEW QUESTION # 351
Refer to the exhibit. An architect must design an IGP solution for an enterprise customer. The design must support:
- Physical link flaps should have minimal impact.
- Access routers should converge quickly after a link failure.
Which two ISIS solutions should the architect include in the design? (Choose two.)

A. Advertise the IS-IS interface and loopback IP address toward the Internet and data center.
B. Reduce SPF and PRC intervals to improve convergence time.
C. Configure access routers to establish a Level 1 adjacency and aggregate routers to establish a Level 1 / Level 2 adjacency.
D. Use BGP to IS-IS redistribution to advertise all Internet routes in the Level 1 area.
E. Configure all access and aggregate routers to establish Level 1 / Level 2 adjacencies across the network.

Answer: B,C

Explanation:
Answer C should be responsible for timer optimization.
Answer E should be the proper design in an "IS-IS Hybrid topology design".
(L1/L2 routers maintain a separate lin-state database for L1 routes and L2 routes > This increases their CPU > So Access routes should never be both L1/L2 devices, only pure L1 devices)

NEW QUESTION # 352
An engineer is designing a PIM Anycast RP solution between two data centers. The design must ensure that RP1 in DC1 and RP2 in DC2 inform each other about specific sources that have joined locally. Which solution must the engineer choose?

A. Enable MSDP between RPs using the configured Anycast RP address
B. Enable MSDP between RPs using separate unique loopback interfaces
C. No action is required because PIM registers from the source will, by default, reach each RP
D. Provision the RPs on the same IP subnet and extend the subnet at Layer 2 between data centers

Answer: B

NEW QUESTION # 353
Which design consideration must be made when using IPv6 overlay tunnels?

A. Overlay tunneling encapsulates IPv4 packets in IPv6 packets for delivery across an IPv6 infrastructure.
B. Overlay tunnels should only be considered as a transition technique toward a permanent solution.
C. Overlay tunnels that connect isolated IPv6 networks can be considered a final IPv6 network architecture.
D. Overlay tunnels can be configured only between border devices and require only the IPv6 protocol stack.

Answer: D

NEW QUESTION # 354
Refer to the exhibit.

EIGRP has been configured on all links. The spoke nodes have been configured as EIGRP stubs, and the WAN links to R3 have higher bandwidth and lower delay than the links to R4. When a link failure occurs at the R1-R2 link, what happens to traffic on R1 that is destined for a subnet attached to R2?

A. R1 has no route to R2 and drops the traffic
B. R1 forwards the traffic to R3, but R3 drops the traffic
C. R1 forwards the traffic to R3 in order to reach R2
D. R1 load-balances across the paths through R3 and R4 to reach R2

Answer: A

Explanation:
Explanation
The EIGRP stub routing feature will prevent the remote device from advertising core routes back to the distribution devices. Routes learned by the remote device from Distribution 1 will not be advertised to Distribution 2. Therefore, Distribution 2 will not use the remote device as a transit for traffic destined to the network core
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_eigrp/configuration/15-mt/ire-15-mt-book/ire-eigrp-s

NEW QUESTION # 355
Refer to the exhibit. An engineer is designing a hierarchical ISIS solution for an enterprise customer with these requirements:
- Users in areas 25 and 55 send and receive traffic from both backbone
areas.
- Link flaps in areas 35 and 45 must not impact other areas.
- Routers will double within the next 12 months in areas 35 and 45.
Which design must the engineer select?

A. A series routers Level 1/2, B series routers Level 2, and C series routers Level 2
B. A series routers Level 1/2, B series routers Level 1/2, and C series routers Level 1/2
C. A series routers Level 2, B series routers Level 2, and C series routers Level 1
D. A series routers Level 1, B series routers Level 1/2, and C series routers Level 2

Answer: D

NEW QUESTION # 356
......

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Reliable 300-420 Exam Review | New 300-420 Test Preparation

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Cisco Designing Cisco Enterprise Networks Sample Questions (Q351-Q356):

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