Latest [Sep 05, 2022] Cisco 300-420 Exam Practice Test To Gain Brilliante Result
Take a Leap Forward in Your Career by Earning Cisco 300-420
NEW QUESTION 99
An engineer must propose a QoS architecture model that allows an application to inform the network of its traffic profile and to request a particular type of service to support its bandwidth and delay requirements. The application requires consistent and dedicated bandwidth end to end. Which QoS architecture model meets these requirements?
- A. DiffServ
- B. IntServ
- C. LLQ
- D. WRED
Answer: B
NEW QUESTION 100
Instructions
The main screen consists of two parts; the Main scenario and the Topology tabs. The main scenario describes TSHOOT.com test bed. The Topology tabs allow you to display the appropriate and select the trouble ticket.
To complete the item, you will first need to familiarize yourself with the TSHOOT.com test bed by clicking on the master scenario first and then the topologies tabs. Once you are familiar with the test bed and the topologies, you should start evaluating the trouble ticket. You will be presented with a Trouble Ticket scenario that will describe the fault condition. You will need to determine on which device the fault condition is located, to which technology the fault condition is related, and the solution to each trouble ticket. This will be done by answering three questions.
Ticket Selection
To begin, click on the Ticket on the Topology tabs.
Please note. Some of the questions will require you to use the scroll bar to see all options.
Fault Isolation
Read the ticket scenario to understand the fault condition.
Open the appropriate topology, based upon the ticket scenario.
Open the console of the desired device by clicking on that device in the topology, based upon your troubleshooting methodology.
Use the supported show, ping and trace commands to begin your fault isolation process.
Move to other devices as need by clicking on those devices within the topology.
Fault Identification
The trouble ticket will include three questions that you will need to answer:
1. Which device contains the fault
2. Which technology the fault condition is related to
3. What is the solution to the issue
To advance to the next question within the ticket click on "Next Question".
When you click "DONE", the trouble ticket will turn RED and will no longer be accessible.
You may also use the "Previous Question" button to review questions within that specific ticket.
To complete a trouble ticket, answer all three questions and click "DONE". This will store your response to the questions. Do not click on "DONE" unless you have answered all questions within the ticket.
Item Completion
Click the NEXT button on the bottom of the screen once a ticket is RED. This action moves you to the next item.
Scenario
The company has created the test bed network shown in the layer 2 and layer 3 topology exhibits.
This network consists of four routers, two layer 3 switches and two layer 2 switches.
In the IPv4 layer 3 topology, R1, R2, R3, and R4 are running OSPF with an OSPF process number 1.
DSW1, DSW2 and R4 are running EIGRP with an AS of 10. Redistribution is enabled where necessary.
R1 is running a BGP AS with a number of 65001. This AS has an eBGP connection to AS 65002 in the ISP's network. Because the company's address space is in the private range, R1 is also providing NAT translations between the inside (10.1.0.0/16 & 10.2.0.0/16) networks and the outside (209.65.200.0/24) network.
ASW1 and ASW2 are layer 2 switches.
NTP is enabled on all devices with 209.65.200.226 serving as the master clock source.
The client workstations receive their IP address and default gateway via R4's DHCP server. The default gateway address of 10.2.1.254 is the IP address of HSRP group 10 which is running on DSW1 and DSW2.
In the IPv6 layer 3 topology R1, R2, and R3 are running OSPFv3 with an OSPF process number 6. DSW1, DSW2 and R4 are running RIPng process name RIP_ZONE. The two IPv6 routing domains, OSPF 6 and RIPng are connected via GRE tunnel running over the underlying IPv4 OSPF domain. Redistribution is enabled where necessary.
Recently the implementation group has been using the test bed to do a 'proof-of-concept' on several implementations. This involved changing the configuration on one or more of the devices. You will be presented with a series of trouble tickets related to issues introduced during these configurations.
The implementation 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 schemes, DHCP services, NTP services, and FHRP services, a trouble ticket has been opened indicating that Client 1 cannot ping the 209.65.200.241 address.
Use the supported commands to isolate the cause of this fault and answer the following questions.
On which device is the fault condition located?
- A. ASW2
- B. DSW2
- C. R2
- D. R4
- E. R3
- F. DSW1
- G. R1
- H. ASW1
Answer: H
Explanation:
Steps need to follow as below:-1.When we check on client 1 & Client 2 desktop we are not receiving DHCP address from R4Ipconfig ----- Client will be getting 169.X.X.X2.On ASW1 port Fa1/0/ 1 & Fa1/0/2 access port VLAN 10 was assigned which is using IPaddress 10.2.1.0/24Sh run ------- & check for running config of int fa1/0/1 & fa1/0/2====================================================interface FastEthernet1/0/1switchport mode accessswitchport access vlan 10interface FastEthernet1/0/2switchport mode accessswitchport access vlan 10
3.We need to check on ASW 1 trunk port the trunk Po13 & Po23 were receiving VLAN 20 &200 but not VLAN
10 so that switch could not get DHCP IP address and was failing to reach IPaddress of Internet4.
Change required:
On ASW1 below change is required for switch-to-switch connectivity..int range portchannel13,portchannel23switchport trunk allowed vlan noneswitchport trunk allowed vlan 10,200
NEW QUESTION 101
Which switch feature prevents traffic on a LAN from being overwhelmed by continuous multicast or broadcast traffic?
- A. port security
- B. storm control
- C. VLAN trunking
- D. VTP pruning
Answer: B
Explanation:
A traffic storm occurs when packets flood the LAN, which creates excessive traffic and degrades network performance. The traffic storm control feature prevents LAN ports from being disrupted by a broadcast, multicast, or unicast traffic storm on physical interfaces from either mistakes in network configurations or from users issuing a DoS attack.
Reference: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/configuration/guide/ book/storm.pdf
NEW QUESTION 102
A network engineer is redesigning a company's QoS solution. The company is currently using IP Precedence, but the engineer plans to move to DiffServ. It is important that the new solution provide backward compatibility with the current solution. Which technology should the design include?
- A. default per hop behavior
- B. class selector code points
- C. expedited forwarding
- D. assured forwarding
Answer: B
Explanation:
Section: Network Services
NEW QUESTION 103
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 existing branch office as a temporary measure. The new branch office is assigned to 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. A virtual link must be configured between the new branch office and HQ
- C. The existing branch office must be configured as a stub area
- D. A sham link must be configured between the new branch office and HQ
Answer: B
Explanation:
Section: Advanced Addressing and Routing Solutions
NEW QUESTION 104
A company is running BGP on a single router, which has two connections to the same ISP. Which BGP feature ensures traffic is load balanced across the two links to the ISP?
- A. Next-Hop Address Tracking
- B. AS-Path Prepending
- C. Multihop
- D. Multipath Load Sharing
Answer: D
NEW QUESTION 105
Which component of Cisco SD-Access integrates with Cisco DNA Center to perform policy segmentation and enforcement through the use of security group access control lists and security group tags?
- A. Cisco TrustSec
- B. Cisco Network Data Platform
- C. Cisco Application Policy Infrastructure Controller Enterprise Module
- D. Cisco Identity Services Engine
Answer: A
Explanation:
Section: Advanced Enterprise Campus Networks
NEW QUESTION 106
Drag and drop the characteristics from the left onto the correct telemetry mode on the right.
Answer:
Explanation:
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.
NEW QUESTION 107
How is end-to-end microsegmentation enforced in a Cisco SD-Access architecture?
- A. VRFs are used to segment traffic at Layer 3.
- B. SGTs and SGTACLs are used to control access to various resources.
- C. 5-tuples and ACLs are used to permit or deny traffic.
- D. VLANs are used to segment traffic at Layer 2.
Answer: B
NEW QUESTION 108 
Refer to the exhibit. Customers report low video quality and delays when having point-to-point telepresence video calls between the two locations. An architect must optimize a design so that traffic follows the same path for egress and ingress traffic flows. Which technique optimizes the design?
- A. Configure the high metric on the router in area 4.
- B. Configure route leaking on the router in area 1.
- C. Configure route leaking on the router in area 2.
- D. Configure route filter on the router in area 4.
Answer: A
Explanation:
Section: WAN for Enterprise Networks
NEW QUESTION 109 
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 R1 and R2 connections, with R5 and R6 as ABRs
- B. a new OSPF area for R1, R2, R3, and R4 connections, with R1, R2, R3, and R4 as ABRs
- C. a newOSPFarea for R3andR4connections,with R3 and R4as ABRs
- D. a newOSPFarea for R1andR2connections,with R1 and R2as ABRs
- E. a newOSPFarea for R3andR4connections,with R5 and R6as ABRs
Answer: A,E
NEW QUESTION 110
Which PIM mode uses a shared tree only?
- A. dense
- B. sparse
- C. source-specific
- D. bidirectional
Answer: D
Explanation:
In bidirectional mode, traffic is routed only along a bidirectional shared tree that is rooted at the rendezvous point (RP) for the group https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-16/imc-pim-xe-16-book/imc-tech-oview.html#GUID-51D0D6DF-E7F1-4A0E-8E31-D7ED464DF2AC
NEW QUESTION 111
An engineer is designing an enterprise campus network. The LAN infrastructure consists of switches from multiple vendors, and Spanning Tree must be used as a Layer 2 loop prevention mechanism. All configured VLANs must be grouped in two SIP instances. Which standards-based Spanning Tree technology supports this design solution?
- A. RSTP
- B. Rapid PVST
- C. STP
- D. MSTP
Answer: D
NEW QUESTION 112
How are wireless endpoints registered in the HTDB in a Cisco SD-Access architecture?
- A. Fabric APs update the HTDB with the clients' ElD and RLOC
- B. Fabric edge nodes update the HTDB based on CAPPWAP messaging from the AP
- C. Fabric WLCs update the HTDB as new clients connect to the wireless network
- D. Border nodes first register endpoints and then update the HTDB
Answer: C
NEW QUESTION 113
Drag and drop the properties from the left onto the Cisco SD-WAN components that perform them on the right.
Answer:
Explanation:
NEW QUESTION 114
What is the purpose of an edge node in an SD-Access network fabric?
- A. Edge nodes resolve lookup requests from edge and border nodes to locate destination endpoint IDs.
- B. Edge nodes are the gateway between the fabric domain and network outside of the fabric.
- C. Edge nodes identify and authenticate endpoints and register endpoint information with control plane nodes.
- D. Edge nodes track endpoint IDs to location mappings, along with IPv4, IPv6, or MAC addresses.
Answer: C
NEW QUESTION 115 
Refer to the exhibit. An architect must create a stable and scalable EIGRP solution for a customer. The design must:
*conserve bandwidth, memory, and CPU processing
*prevent suboptimal routing
*avoid any unnecessary queries
Which two solutions must the architect select? (Choose two.)
- A. distribute lists
- B. prefix lists
- C. route summarization
- D. static redistribution
- E. stub routing
Answer: A,C
NEW QUESTION 116
Which consideration must be taken into account when using the DHCP relay feature in a Cisco SD-Access Architecture?
- A. DHCP-relay must be enabled on fabric edge nodes to provide the correct mapping of DHCP scope to the local anycast gateway.
- B. DHCP Option-82 must be enabled to map the circuit IP option to the access fabric node where the DHCP discover originated.
- C. A DHCP server must be enabled on the border nodes to allow subnets to span multiple fabric edges.
- D. DHCP servers must support Cisco SD-Access extensions to correctly assign IPs to endpoints in an SD-Access fabric with anycast gateway.
Answer: B
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-c
NEW QUESTION 117
An engineer uses Postman and YANG to configure a router with:
Which get-config replay verifies that the model set was designed correctly?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer: D
NEW QUESTION 118
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. BPDU guard
- B. PortFast
- C. UplinkFast
- D. root guard
Answer: B
NEW QUESTION 119
Drag and drop the components in a Cisco SD-Access architecture from the left onto their descriptions on the right.
Answer:
Explanation:
NEW QUESTION 120
Which feature must be incorporated into the campus LAN design to enable Wake on LAN?
- A. directed broadcasts on layer 3 devices
- B. proxy ARP on layer 3 devices
- C. dynamic ARP Inspection Snooping on layer 2 devices
- D. DHCP Snooping on layer 2 devices
Answer: A
NEW QUESTION 121
Which design consideration must be made when using IPv6 overlay tunnels?
- A. Overlay tunnels can be configured only between border devices and require only the IPv6 protocol stack.
- B. Overlay tunneling encapsulates IPv4 packets in IPv6 packets for delivery across an IPv6 infrastructure.
- C. Overlay tunnels that connect isolated IPv6 networks can be considered a final IPv6 network architecture.
- D. Overlay tunnels should only be considered as a transition technique toward a permanent solution.
Answer: D
Explanation:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/configuration/xe-3s/ir-xe-3s-book/ip6-ip4-gre-tunls-xe.pdf
"The use of overlay tunnels should be considered as a transition technique toward a network that supports both the IPv4 and IPv6 protocol stacks or just the IPv6 protocol stack."
NEW QUESTION 122
Which feature is required for graceful restart to recover from a processor failure?
- A. Stateful Switchover
- B. Bidirectional Forwarding Detection
- C. Cisco Express Forwarding
- D. Virtual Switch System
Answer: A
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 123
......
Authentic Best resources for 300-420 Online Practice Exam: https://dumpspdf.free4torrent.com/300-420-valid-dumps-torrent.html