300-420 Actual Questions - Instant Download 341 Questions
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Cisco 300-420 exam is an ideal certification for IT professionals who are looking to gain a competitive edge in the job market. 300-420 exam is designed to test the candidate's knowledge and skills in designing and implementing complex enterprise networks using Cisco technologies. 300-420 exam is also designed to test the candidate's ability to troubleshoot complex network problems, as well as their ability to design and implement scalable and reliable network solutions.
NEW QUESTION # 33
A network engineer must optimize a campus OSPF deployment. Currently, each time a type 1 or type 2 LSA is generated within an area, the OSPF process must recompute the entire SPT.
Which solution improves the recomputation process?
- A. BFD
- B. iSPF
- C. PRC
- D. SPF
Answer: B
NEW QUESTION # 34
Refer to the exhibit.
A network engineer is designing a network for AS100. The design should ensure that all traffic enters AS100 via link 1 unless there is a network failure. In the event of a failure, link 2 should function as the path for incoming traffic. Which solution should the design include?
- A. Use AS-Path prepending on R3.
- B. Modify the next-hop attribute on R4.
- C. Use AS-Path prepending on R4.
- D. Modify the next-hop attribute on R3.
Answer: C
NEW QUESTION # 35
An engineer must design a solution to provide backup connectivity between two sites. The engineer plans to use an Internet connection but company policy requires the connection to be encrypted. Additionally, there are several applications that utilize multicast to deliver video streams between the sites. Which technology should the design include?
- A. DMVPN
- B. IPsec direct encapsulation
- C. GETVPN
- D. GRE over IPsec
Answer: D
NEW QUESTION # 36
A company requires a private WAN design that allows remote sites to connect to HQ. The design must ensure that:
- traffic is always encrypted
- forwarding overhead is reduced
- management of security is centralized
- multicast traffic is supported
Which technology must the company select?
- A. mGRE
- B. IPsec P2P
- C. GET VPN
- D. DMVPN Phase 3
Answer: D
NEW QUESTION # 37
Which control plane protocol is responsible for EID-to-RLOC mapping concerning SD-Access Architecture?
- A. CEF
- B. VXLAN
- C. LISP
- D. GBAC
Answer: C
NEW QUESTION # 38
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. No-advertise
- B. Next-hop
- C. no-export
- D. Maximum-prefix
Answer: C
NEW QUESTION # 39
Which feature is required for graceful restart to recover from a processor failure?
- A. Cisco Express Forwarding
- B. Stateful Switchover
- C. Virtual Switch System
- D. Bidirectional Forwarding Detection
Answer: B
Explanation:
Explanation
https://archive.nanog.org/meetings/nanog42/presentations/Weissner_SSO.pdf The Stateful Switchover (SSO) feature works with Nonstop Forwarding (NSF) in Cisco software to minimize the amount of time a network is unavailable to its users following a switchover. The primary objective of SSO is to improve the availability of networks constructed with Cisco routers.
NEW QUESTION # 40
Refer to the exhibit.
A network engineer must design a multicast solution based on:
* Many-to-many communications between the users and sources
* Support of up to 50 multicast sources
* Users that must register for steams
Which multicast solution must the engineer select?
- A. Source-Specific Multicast
- B. Any Source Multicast
- C. Bidirectional PIM
- D. Multicast VPN
Answer: C
NEW QUESTION # 41
Which option will help build your customers platform during the discovery phase?
- A. PO
- B. POV report
- C. business case
- D. detailed design
- E. high-level design
Answer: C
NEW QUESTION # 42
Drag and drop the characteristics from the left onto the YANG modules they describe on the right. Not all options are used.
Answer:
Explanation:
NEW QUESTION # 43
A company is planning to open two new branches and allocate the 2a01:c30:16:7009::3800/118 IPv6 network for the region. Each branch should have the capacity to accommodate maximum of 200 hosts. Which two networks should the company use? (Choose two.)
- A. 2a01:0c30:0016:7009::3a80/121
- B. 2a01:0c30:0016:7009::3a00/120
- C. 2a01:0c30:0016:7009::3c00/120
- D. 2a01:0c30:0016:7009::3b00/121
- E. 2a01:0c30:0016:7009::3b00/120
Answer: B,E
NEW QUESTION # 44
Drag and drop the components in a Cisco SD-Access architecture from the left onto their descriptions on the right.
Answer:
Explanation:
NEW QUESTION # 45
Refer to the exhibit.
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 gig0/0. Which solution must the architect include in the design?
- A. Prepend additional AS on the AS path toward the preferred service provider.
- B. Advertise a lower MED value toward the less preferred service provider.
- C. Set a higher local preference to the preferred service provider path.
- D. Break aggregated routes into longer prefixes and advertise to the preferred service provider.
Answer: B
NEW QUESTION # 46
Which function does the Cisco SD-Access intermediate node perform?
- A. Act as an anycast Layer 3 gateway.
- B. Map users to a virtual network.
- C. Route and transport IP traffic.
- D. Act as LISP proxy tunnel router.
Answer: C
NEW QUESTION # 47
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. Configure selective packet discard to drop noncritical network traffic.
- B. Implement higher-speed uplink interfaces
- C. Utilize random early detection to manage queues
- D. Reconfigure QoS based on the IntServ model
- E. Bundle additional uplinks into logical EtherChannels
Answer: A,C
NEW QUESTION # 48
An ISP provides Layer 3 VPN service over MPLS to a customer with four branches and multiple CE routers at each branch. To exchange the routes that are learned from the CE routers, which BGP address family should the ISP activate among the PE routers?
- A. L2VPN EVPN
- B. address-family multicast
- C. VPNv4 unicast
- D. IPv4 unicast
Answer: C
NEW QUESTION # 49
An architect is designing a connectivity solution for a customer's two small branch offices. The customer wants a cost-effective design, no routing overload, and some down time during the year is acceptable. Which connectivity solution must the architect choose?
- A. single multihomed
- B. dual multihomed
- C. dual-homed
- D. single-homed
Answer: D
NEW QUESTION # 50
An engineer must design a solution to connect a customer to the Internet. The solution will include a Layer 3 circuit with a CIR of 50 Mbps from the service provider. The hand-off from the provider's switch to the customer's router is 1Gbps. Which solution should the engineer include to prevent potential issues with choppy voice traffic?
- A. Reduce the bandwidth of the connection to the router.
- B. Implement hierarchical QoS with a parent shaping policy.
- C. Implement hierarchical QoS with a parent policing policy.
- D. Add a bandwidth statement to the router interface.
Answer: B
Explanation:
Section: WAN for Enterprise Networks
NEW QUESTION # 51
At which layer does Cisco Express Forwarding use adjacency tables to populate addressing information?
- A. Layer4
- B. Layer 3
- C. Layer 1
- D. Layer 2
Answer: D
NEW QUESTION # 52
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