Updated Jan-2024 100% Cover Real 300-420 Exam Questions - 100% Pass Guarantee
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Cisco 300-420 exam is intended for network professionals who have experience in designing and deploying complex enterprise networks. Candidates should have a deep understanding of network protocols, network infrastructure, and network security solutions. 300-420 exam is suitable for network engineers, network architects, and network administrators who want to validate their skills and knowledge in designing and implementing Cisco enterprise networks.
NEW QUESTION # 105
Refer to the exhibit. An architect reviews the low-level design of a company's enterprise network and advises optimizing the STP convergence time. Which functionality must be to Gi1/0/1-10 to follow the architect's recommendation?
- A. PortFast
- B. UplinkFast
- C. root guard
- D. BPDU guard
Answer: A
NEW QUESTION # 106
Refer to the exhibit.
Refer to the exhibit. Area 10 is a regular OSPF area and networks 10.1.1.0/24 and 172.16.1.0/24 are internal. Which design provides optimal routing between both networks when the link between routers C and E fails?
- A. Create an OSPF virtual link between routers E and F.
- B. Make area 10 a not-so-stubby area.
- C. Move the link between routers C and D to area 10.
- D. Create a tunnel between routers E and F in area 10.
Answer: C
NEW QUESTION # 107
Drag and drop the characteristics from the left onto the configuration protocols they describe on the right.
Answer:
Explanation:
NEW QUESTION # 108
How do endpoints inside an SD-Access network reach resources outside the fabric?
- A. SD-Access transit links are used to transport encapsulated traffic from one fabric to another
- B. Fabric borders use VRFs to map VNs to VRFs
- C. A fabric edge is used to de-encapsulate VXLAN traffic to normal IP traffic then transported over the outside network
- D. a VRF fusion router is used to map resources in one VN to another VN
Answer: D
NEW QUESTION # 109
Drag and drop the elements from the left onto the functions they perform in the Cisco SD-WAN architecture on the right.
Answer:
Explanation:
NEW QUESTION # 110
An engineer is creating a design to enable IPv6 to run on an existing IPv4 IS-IS network. The IPv4 and IPv6 topologies will match exactly, and the engineer plans to use the same router levels for each protocol per interface. Which IS-IS design is required?
- A. single topology without enabling transition feature
- B. multi topology with transition feature enabled
- C. single topology with transition feature enabled
- D. multi topology without enabling transition feature
Answer: B
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_isis/configuration/15-mt/irs-15-mt-book/ip6-route-mu
NEW QUESTION # 111
Drag and drop the descriptions from the left onto the Cisco SD-WAN component they describe on the right.
Answer:
Explanation:
Explanation
Answer Area
is responsible for traffic forwarding, security, encryption, QoS,and routing protocols distributes routes and policy information via OMP enables centralized provisioning and simplifies network changes enables the communication of devices that sit behind NAT
NEW QUESTION # 112
Drag and drop the model-driven telemetry considerations from the left onto the modes they apply to on the right.
Answer:
Explanation:
Explanation
https://xrdocs.io/telemetry/blogs/2017-01-20-model-driven-telemetry-dial-in-or-dial-out/
NEW QUESTION # 113
An engineer is working for a large cable TV provider that requires multiple sources streaming video on different channels using multicast with no rendezvous point. Which multicast protocol meets these requirements?
- A. BIDIR-PIM
- B. PIM-SSM
- C. PIM-SM
- D. any-source multicast
Answer: B
Explanation:
PIM-SSM is suitable for when well-known sources exist within the local PIM domain and for broadcast applications. Also, PIM-SSM eliminates the RPs and shared trees
NEW QUESTION # 114
Refer to the exhibit.
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 OSPFv2 and other OSPF v3
- C. one router running ISIS and other OSPF v3
- D. both routers running OSPFv2
Answer: A
Explanation:
EIGRP has a function called "EIGRP Ipv6" (But that can still be called "EIGRP")
NEW QUESTION # 115
Refer to the exhibit.
Refer to the exhibit. Which two solutions maximize the use of the links between the core and distribution layers? (Choose two.)
- A. use multiple unequal-cost links
- B. use an IGP
- C. use multiple equal-cost links
- D. use HSRP
- E. use R-PVSTP+
Answer: B,C
NEW QUESTION # 116
Which two steps can be taken to improve convergence in an OSPF network? (Choose two.)
- A. Span the same IP network across multiple areas.
- B. Use Bidirectional Forwarding Detection
- C. Tune OSPF parameters
- D. Merge all the areas into one backbone area
- E. Make all non-backbone areas stub areas
Answer: C,E
NEW QUESTION # 117
Refer to the exhibit. The connection between SW2 and SW3 is fiber and occasionally experiences unidirectional link failure. An architect must optimize the network to reduce the change of layer2 forwarding loops when the link fails. Which solution should the architect include?
- A. Utilize 8PDU filter on SW3.
- B. Utilize root guard on SW1.
- C. Utilize loop guard on SW2
- D. Utilize BPDU guard on SW1
Answer: C
NEW QUESTION # 118
The implementations group has been using the test bed to do a 'proof-of-concept' that requires both Client 1 and Client 2 to access the WEB Server at 209.65.200.241. After several changes to the network addressing, routing scheme, DHCP services, NTP services, layer 2 connectivity, FHRP services, and device security, a trouble ticket has been opened indicating that Client 1 cannot ping the 209.65.200.241 address.
Use the supported commands to isolated the cause of this fault and answer the following questions.
The fault condition is related to which technology?
- A. IPv4 OSPF Routing
- B. IPv4 layer 3 security
- C. IPv4 OSPF Redistribution
- D. IPv6 OSPF Routing
- E. IP NAT
- F. NTP
- G. BGP
Answer: A
Explanation:
On R1, for IPV4 authentication of OSPF the command is missing and required to configure------ ip ospf authentication message-digest
NEW QUESTION # 119
Refer to the exhibit.
An engineer must optimize the traffic flow of the network. Which change provides a more efficient design between the access and the distribution layer?
- A. Change the link between distribution switch A and distribution switch B to be a routed link
- B. Add a link between access switch A and access switch B
- C. Reconfigure the distribution switch A to become the HSRP Active
- D. Create an EtherChannel link between distribution switch A and distribution switch B
Answer: C
NEW QUESTION # 120
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