[Mar 16, 2026] New 300-420 Exam Dumps with High Passing Rate
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Cisco 300-420 exam evaluates the candidate's knowledge and skills in designing and implementing advanced routing and switching technologies, security, wireless, and network services. 300-420 exam aims to test the candidate's ability to design a scalable and robust network infrastructure that can meet the demands of modern-day businesses.
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Cisco is one of the largest networking service providers that has a global presence. This has helped such a company develop a wide community so every 300-420 exam-taker is advised to join it. In all, this community has millions of active certified, aspiring, and in-job professionals. Thus, the exam-takers can seek help from the Cisco community related to any problem, know the latest IT trend, take suggestions from in-service specialists, and share the struggle with fellow test-takers.
Cisco 300-420 certification exam is an excellent opportunity for IT professionals who are interested in pursuing a career in network design. 300-420 exam covers a range of topics related to enterprise network design, and candidates who pass the exam are awarded the Cisco Certified Design Professional (CCDP) certification. With its high value in the industry, the 300-420 certification is a great way to advance your career in network design.
NEW QUESTION # 185
An architect is creating a migration strategy for a large organization in which the choice made by the application between IPv6 and IPv4 is based on the DNS request. Which migration strategy does the architect choose?
- A. host-initiated tunnels
- B. site-to-site IPv6 over IPv4 tunnels
- C. AFT for public web presence
- D. dual stack
Answer: D
NEW QUESTION # 186
Drag and drop the characteristics from the left onto the correct telemetry mode on the right.
Answer:
Explanation:
In a dial-in mode, the destination initiates a session to the router and subscribes to data to be streamed. Dialin mode is supported over gRPC in only 64-bit platforms In a dial-out mode, the router initiates a session to the destinations based on the subscription. All 64-bit IOS XR platforms (except for NCS 6000 series routers) support gRPC and TCP protocols. All 32-bit IOS XR platforms support only TCP.
Reference:
https://www.cisco.com/c/en/us/td/docs/iosxr/asr9000/telemetry/b-telemetry-cg-asr9000-61x/b-telemetry-cgasr9000-61x_chapter_010.html#id_36445
NEW QUESTION # 187
Refer to the exhibit.
Refer to the exhibit. An engineer is designing a BGP solution for a client that peers with ISP1 for full Internet connectivity and with ISP2 for direct exchange of routes for several third parties. Which action, when implemented on the edge routers, enables the client network to reach the Internet through ISP1?
- A. Apply the AS-path prepend feature for ISP2.
- B. Run an eBGP session within different VRFs for each ISP.
- C. Apply route filtering such that the client advertises only routes originated from its own AS.
- D. Advertise a default route for downstream routers within the client network.
Answer: D
NEW QUESTION # 188
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.)
- A. Utilize different MTU values for each campus network segment. Level 2 backbone routers must utilize a larger MTU size of 9216.
- B. 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.
- C. Assign a unique IS-IS NET value for each campus, and configure internal campus routers with Level 1 routing.
- D. Designate two IS-IS routers from each campus to act as Level 1/Level 2 backbone routers at the edge of each campus network.
- E. Assign the same IS-IS NET value for each campus, and configure internal campus routers with Level 1/ Level 2 routing.
Answer: C,D
Explanation:
Section: Advanced Enterprise Campus Networks
NEW QUESTION # 189
Refer to the exhibit. An architect is developing a solution to consolidate networks while retaining device redundancy. The routing protocol for the WAN routers must be open standard, ensure high availability, and provide the fastest convergence time. Which solution must the design include?
- A. both routers running EIGRP
- B. one router running ISIS and other OSPF v3
- C. both routers running OSPFv2
- D. one router running OSPFv2 and other OSPF v3
Answer: A
Explanation:
EIGRP has a function called "EIGRP Ipv6" (But that can still be called "EIGRP")
NEW QUESTION # 190
What is a benefit of using VRRPv3 as compared to VRRPv2?
- A. VRRPv3 supports preemption
- B. VRRPv3 supports stateful switchover
- C. VRRPv3 supports IPv4 and IPv6
- D. VRRPv3 supports authentication
Answer: C
NEW QUESTION # 191 
Refer to the exhibit. Which two solutions maximize the use of the links between the core and distribution layers? (Choose two.)
- A. use multiple equal-cost links
- B. use multiple unequal-cost links
- C. use HSRP
- D. use an IGP
- E. use RPVSTP+
Answer: A,D
Explanation:
Section: Advanced Enterprise Campus Networks
NEW QUESTION # 192
Refer to the exhibit.
An architect is designing an EIGRP solution based on these requirements:
* Traffic forwarding should use the best two paths while all links are available
* Single path failure must not impact traffic between branch and HQ
Which solution must the architect select?
- A. Variance 2
- B. Add-paths 2
- C. Maximum-paths 2
- D. Metric weights 010100
Answer: A
Explanation:
ENSLD cert guide page 113. shortest path = 900, next 1700 and finally 3300 for the worst path. Witch variance 2, all routes under 1800 (900x2) become active.
NEW QUESTION # 193
Which two techniques improve the application experience in a Cisco SD-WAN design? (Choose two.) utilizing forward error correction
- A. utilizing quality of service
- B. implementing Cisco Umbrella
- C. implementing AMP
- D. implementing a stateful application firewall
Answer: B,D
NEW QUESTION # 194
Refer to the exhibit. All routers currently reside in OSPF area 0. The network manager recently used R1 and R2 as aggregation routers for remote branch locations and R3 and R4 for aggregation routers for remote office locations. The network has since been suffering from outages, which are causing frequent SPF runs. To enhance stability and introduce areas to the OSPF network with the minimal number of ABRs possible, which two solutions should the network manager recommend? (Choose two.)
- A. a new OSPF area for R3 and R4 connections, with R5 and R6 as ABRs
- B. a new OSPF area for R3 and R4 connections, with R3 and R4 as ABRs
- C. a new OSPF area for R1 and R2 connections, with R1 and R2 as ABRs
- D. a new OSPF area for R1 and R2 connections, with R5 and R6 as ABRs
- E. a new OSPF area for R1, R2, R3, and R4 connections, with R1, R2, R3, and R4 as ABRs
Answer: A,D
NEW QUESTION # 195
An engineer must connect a new remote site to an existing OSPF network. The new site consists of two low-end routers, one for WAN, and one for LAN. There is no demand for traffic to pass through this area.
Which area type does the engineer choose to provide minimal router resources utilization, while still allowing for full connectivity to the rest of the network?
- A. not so stubby
- B. totally stubby area
- C. totally not so stubby
- D. stubby area
Answer: B
NEW QUESTION # 196 
Refer to the exhibit. An architect must design an IP addressing scheme for a multisite network connected via a WAN transit. The campus site must accommodate 12,000 devices and the branch sites must accommodate
1,000 devices. Which address scheme optimizes network device resources, contains convergence events to the different blocks of the network, and ensures future growth of the network?
- A. Campus: 10.0.0.0/18
*Branch1: 10.0.192.0/21
*Branch2: 10.0.200.0/21 - B. * Campus: 10.0.0.0/16
*Branchi: 10.255.0.0/20
*Branch2: 10.255.16.0/20 - C. * Campus: 10.0.0.0/10
*Branch1: 10.64.0.0/10
*Branch2: 10.128.0.0/10 - D. * Campus: 10.0.0.0/20
*Branch1: 10.0.64.0/21
Branch2: 10.0.128.0/21
Answer: A
NEW QUESTION # 197
Refer to the exhibit.
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 # 198
An engineer must design a large Layer 2 domain that contains hundreds of switches and VLANs. The engineer's primary goals are to:
* Efficiently utilize the bandwidth of all links
* Avoid Layer 2 loops
* Cause minimal impact on switch CPU and memory
Which technology should the engineer include in the design?
- A. PVST+
- B. Rapid PVST+
- C. RSTP
- D. MST
Answer: D
NEW QUESTION # 199
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
Explanation:
Network range for 2a01:c30:16:7009::3800/118
2a01:0c30:0016:7009:0000:0000:0000:3800-
2a01:0c30:0016:7009:0000:0000:0000:3bff
Network Range for 2a01:0c30:0016:7009::3a00/120
2a01:0c30:0016:7009:0000:0000:0000:3a00-
2a01:0c30:0016:7009:0000:0000:0000:3aff
Network range for 2a01:0c30:0016:7009::3b00/120
2a01:0c30:0016:7009:0000:0000:0000:3b00-
2a01:0c30:0016:7009:0000:0000:0000:3bff
NEW QUESTION # 200
A company plans to transition to IPv6. They will link their IPv4 addresses to the lowest significant bits of the new Ipv6 addresses. A network administrator with an employee id: 4264:42:116 is preparing a mapping schema for the new IPv6 addresses. Which address does the
172.16.10.0/24 network translate to?
- A. 2001:db8:abcd:172:16:10::/96
- B. 2001:db8:ac10:0a00::/64
- C. 2001:db8:abcd:11d8:a00/120
- D. 2001:db8:abcd::ac10:a00/120
Answer: D
Explanation:
ac10:a00 = 172.16.10.0 and /120 = /24
NEW QUESTION # 201
Which two BGP features will result in successful route exchanges between eBGP neighbors sharing the same AS number? (Choose two.)
- A. advertise-best-external
- B. bestpath as-path ignore
- C. client-to-client reflection
- D. allow-as-in
- E. as-override
Answer: D,E
NEW QUESTION # 202
Which two tasks must you perform to configure DHCP snooping on a device? (Choose two.)
- A. Enable DHCP option 82
- B. Enable VRF support for the DHCP relay agent
- C. Enable DHCP snooping globally
- D. Enable DHCP snooping on the VLAN
- E. Enable DHCP packet validation on the device
Answer: C,D
Explanation:
Explanation/Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/4_1/nx-os/security/configuration/ guide/sec_nx-os-cfg/sec_dhcpsnoop.html
NEW QUESTION # 203
Which security functionality does gRPC provide?
- A. implementing secure server-client tunnels with RSA 20*8 cipher encryption
- B. mandatory encryption of data at rest using the AES and RSA protocols
- C. supporting secure communication between network devices and control systems using TLS
- D. enabling RC6 data-level encryption with CRC check
Answer: C
NEW QUESTION # 204
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