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Three High-in-Demand Cisco 300-420 Exam Practice Questions Formats

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Cisco 300-420 (Designing Cisco Enterprise Networks) Certification Exam is designed for network professionals who wish to gain expertise in designing Cisco enterprise networks. 300-420 exam focuses on testing the candidate's knowledge and skills related to designing, implementing, and troubleshooting complex enterprise networks using Cisco technologies. Designing Cisco Enterprise Networks certification exam is ideal for network architects, network designers, and network engineers who are responsible for designing and implementing enterprise networks using Cisco technologies.

Cisco Designing Cisco Enterprise Networks Sample Questions (Q140-Q145):

NEW QUESTION # 140
Refer to the exhibit.

A network engineer must improve the current IS-IS environment. The Catalyst switch is equipped with dual supervisors. Each time a stateful switchover occurs, the network experiences unnecessary route recomputation. Which solution addresses this issue if the upstream router does not understand graceful restart messaging?

A. Configure ISIS aggressive timers on both devices.
B. Enable IS-IS remote LFA FRR on both devices.
C. Enable NSF on the switch.
D. Enable NSR on the switch.

Answer: C

NEW QUESTION # 141

Refer to the exhibit A customer requires a Layer 2 network designed to support:
* 500 active logical ports
* trunking of 30 VLANs
* convergence of less than 1 second
Which Spanning Tree Protocol must be selected?

A. MSTP
B. PVST+
C. CST
D. RPVST+

Answer: D

NEW QUESTION # 142
A company is using OSPF between its HQ location and a branch office. HQ is assigned area 0 and the branch office is assigned area 1.
The company purchases a second branch office, but due to circuit delays to HQ, it decides to connect the new branch office to the creating branch office as a temporary measure.
The new branch office is assigned area 2.
Which OSPF configuration enables all three locations to exchange routes?

A. The new branch office must be configured as a stub area
B. The existing branch office must be configured as a stub area
C. A virtual link must be configured between the new branch office and HQ
D. A sham link must be configured between the new branch office and HQ

Answer: C

Explanation:
Area 0 must connect to all other areas. When the network design goes against that practice we have to use virtual links to configure the connecting area as a transit area.

NEW QUESTION # 143
Which two overlay network design considerations must be made for a Cisco SD-Access network?
(Choose two.)

A. Layer 3 to the access design
B. Reduce subnets and simplify DHCP management
C. Dedicated IGP process for the fabric
D. LAN automation for deployment
E. Avoid overlapping IP subnets

Answer: B,E

Explanation:
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design- guide.html#Overlay_Network_Design

NEW QUESTION # 144
A network engineer must segregate three interconnected campus networks using IS-IS routing. A two-layer hierarchy must be used to support large routing domains and to avoid more specific routes from each campus network being advertised to other campus network routers automatically. Which two actions does the engineer take to accomplish this segregation? (Choose two.) Designate two IS-IS routers as BDR routers at the edge of each campus, and configure one BDR for all Level 1 routers and one BDR for all Level 2 routers.

A. Designate two IS-IS routers from each campus to act as Level 1/Level 2 backbone routers at the edge of each campus network.
B. Utilize different MTU values for each campus network segment. Level 2 backbone routers must utilize a larger MTU size of 9216.
C. Assign a unique IS-IS NET value for each campus, and configure internal campus routers with Level 1 routing.
D. Assign the same IS-IS NET value for each campus, and configure internal campus routers with Level 1/ Level 2 routing.

Answer: D

NEW QUESTION # 145
......

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