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Cisco 300-420 Exam is a 90-minute test with 60-70 multiple-choice questions. 300-420 exam is conducted in English and is available at Pearson VUE test centers worldwide. 300-420 exam fee is $300 USD, and the certification is valid for three years. Candidates who pass the exam will earn the Cisco Certified Design Professional (CCDP) certification.
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Cisco 300-420: Designing Cisco Enterprise Networks is a certification exam that tests the knowledge of IT professionals in designing and implementing enterprise networks. 300-420 Exam is part of the Cisco Certified Network Professional (CCNP) Enterprise certification program, which is recognized globally as a standard for network engineers. Designing Cisco Enterprise Networks certification program is designed to help professionals advance their careers and stay competitive in the ever-changing IT industry.
NEW QUESTION # 360
Refer to the exhibits. An engineer is troubleshooting an issue in which the Gig0/2 interface on a Cisco switch named SW2 fails to become the root port. Which two commands must be run on SW2 to resolve this issue? (Choose two.)
Answer: C,E
NEW QUESTION # 361
A customer is discussing QoS requirements with a network consultant. The customer has specified that end-to- end path verification is a requirement. Which QoS solution meets this requirement?
Answer: D
Explanation:
The requirement for end-to-end path verification identifies the Integrated Services model with RSVP. IntServ uses per-flow resource reservation, and RSVP signals the path between sender and receiver so devices along that path can admit or reject the requested service based on available resources. This makes IntServ appropriate when the design requires explicit end-to-end path validation and reservation for application flows.
DiffServ works differently. In a DiffServ design, traffic is marked, normally with DSCP or CoS at the edge, and each hop applies a configured per-hop behavior. DiffServ is scalable and common in enterprise WAN and campus QoS designs, but it does not perform per-flow signaling or verify that every device in the path can reserve the requested resources. Marking traffic at the access layer is an important QoS design practice, but marking alone is not path verification. Therefore, when the customer explicitly requires end-to-end path verification for business-critical traffic, Cisco QoS architecture points to IntServ with RSVP rather than a pure DiffServ marking model.
NEW QUESTION # 362
Refer to the exhibit. An architect is designing an IPv4 plan using the 172.16.0.0/16. The design must maximize the number of subnets while meeting these requirements:
- 500 hosts within the server room
- 100 hosts at the remote site
- 25 hosts at the access site
Which plan must the architect choose?
Answer: D
NEW QUESTION # 363
Refer to the exhibit. A customer experienced an unexpected network outage when the link between R1 and R2 went down. An architect must design a solution to ensure network continuity in the event the link tails again. Which solution should the design include?
Answer: D
NEW QUESTION # 364
When designing interdomain multicast, which two protocols are deployed to achieve communication between multicast sources and receivers? (Choose two.)
Answer: A,E
Explanation:
Interdomain multicast designs commonly use MP-BGP and MSDP together. MP-BGP carries multicast routing information between domains so routers can perform RPF checks based on the correct multicast topology rather than relying only on unicast routing. MSDP is used between rendezvous points in different PIM sparse-mode domains to exchange information about active sources. Cisco multicast documentation describes MSDP as a mechanism that connects multiple PIM-SM domains and allows RPs to discover multicast sources in other domains. Together, MP-BGP provides the reachability information and MSDP provides source discovery between RPs. IGMPv2 is a host-to-router group membership protocol inside a local subnet, not an interdomain multicast routing protocol. MLD provides the IPv6 equivalent of host group membership signaling. BIDIR-PIM is a multicast forwarding mode optimized for many-to-many traffic inside a domain, but it is not the pair of protocols used for interdomain source and receiver communication in this question. Therefore, the correct protocols are MP-BGP and MSDP.
NEW QUESTION # 365
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