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Cisco 300-420 (Designing Cisco Enterprise Networks) Certification Exam is designed for network professionals who wish to gain expertise in designing Cisco enterprise networks. 300-420 exam focuses on testing the candidate's knowledge and skills related to designing, implementing, and troubleshooting complex enterprise networks using Cisco technologies. Designing Cisco Enterprise Networks certification exam is ideal for network architects, network designers, and network engineers who are responsible for designing and implementing enterprise networks using Cisco technologies.
NEW QUESTION # 16
Which two BGP features will result in successful route exchanges between eBGP neighbors sharing the same AS number? (Choose two.)
- A. bestpath as-path ignore
- B. as-override
- C. client-to-client reflection
- D. advertise-best-external
- E. allow-as-in
Answer: B,E
Explanation:
Explanation
NEW QUESTION # 17
Refer to the exhibit.
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. stub routing
- B. route summarization
- C. distribute lists
- D. static redistribution
- E. prefix lists
Answer: B,C
NEW QUESTION # 18
Which consideration must be made when designing a Cisco SD-Access fabric underlay?
- A. Up to six control planes are supported.
- B. The default MTU should be increased.
- C. A unified policy must be used.
- D. Subnets must be reduced to decrease latency.
Answer: B
Explanation:
Explanation
Look under "Underlay Network Design". Its the second bullet point.
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html#Underlay_Network
NEW QUESTION # 19
Refer to the exhibit.
Refer to the exhibit. An engineer is designing an OSPF network for a client. Requirements dictate that the routers in Area 1 should receive all routes belonging to the network, including EIGRP, except the ones originated in the RIP domain. Which action should the engineer take?
- A. Make area 1 a stub.
- B. Make the area 1 routers part of area 0.
- C. Make area 1 a standard OSPF area.
- D. Make area 1 a NSSA.
Answer: D
Explanation:
NEW QUESTION # 20
Refer to the exhibit.
EIGRP has been configured on all links. The spoke nodes have been configured as EIGRP stubs, and the WAN links to R3 have higher bandwidth and lower delay than the links to R4. When a link failure occurs at the R1-R2 link, what happens to traffic on R1 that is destined for a subnet attached to R2?
- A. R1 has no route to R2 and drops the traffic
- B. R1 forwards the traffic to R3 in order to reach R2
- C. R1 load-balances across the paths through R3 and R4 to reach R2
- D. R1 forwards the traffic to R3, but R3 drops the traffic
Answer: B
NEW QUESTION # 21
What is the role of a control-plane node in a Cisco SD-Access architecture?
- A. map system that manages External Layer 3 networks
- B. fabric device that connects wired endpoints to the SD-Access fabric
- C. fabric device that connects APs and wireless endpoints to the SD-Access fabric
- D. map system that manages endpoint to device relationships
Answer: D
NEW QUESTION # 22
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 Export
- B. No-advertise
- C. Next-hop
- D. Maximum-prefix
Answer: D
NEW QUESTION # 23
An engineer must design an in-band management solution for a customer with branch sites. The solution must allow remote management of the branch sites using management protocols over an MPLS WAN. Queueing is implemented at the remote sites using these classes:
How must the solution prioritize the management traffic over the WAN?
- A. Mark the traffic with DSCP CS2 and map into Class2 with a minimum bandwidth assigned by reducing the bandwidth available to Class3
- B. Mark the traffic with DSCP CS6 and map into Class1 with a minimum bandwidth assigned by reducing the bandwidth available to Class2
- C. Mark the traffic with DSCP CS1 and map into Class2 with a minimum bandwidth assigned by reducing the bandwidth available to CIass3.
- D. Mark the traffic with DSCP EF and map into Class1 with a minimum bandwidth assigned by reducing the bandwidth available to Class2.
Answer: D
NEW QUESTION # 24
An engineer is designing an EIGRP network for a small branch site where there is only one Layer 3 router. The engineer wants the router to advertise the local LAN network to remote EIGRP neighbors without sending any unnecessary multicast messages on the local LAN. Which action should the engineer take?
- A. Use a static default route for this site instead of EIGRP
- B. Redistribute the local LAN network using the redistribute connected command
- C. Advertise the local LAN using the network command and the passive-interface feature
- D. Advertise the local LAN subnet as a stub network
Answer: C
Explanation:
Section: Advanced Addressing and Routing Solutions
NEW QUESTION # 25
Which OSPF area blocks LSA Type 3, 4 and 5, but allows a default summary route?
- A. totally stubby
- B. NSSA
- C. normal
- D. stub
Answer: A
NEW QUESTION # 26
Which two statements about VRRP object tracking are true? (Choose two)
- A. VRRP can track the status of interfaces and routes
- B. A VRRP group can track only one object at a time
- C. The VRRP interface priority must be manually configured by the administrator
- D. VRRP supports only interce tracking
- E. The priority of a VRRP device can change in accordance with the up or down status of a VRRP object
Answer: A,E
NEW QUESTION # 27
In a multicast network, which condition must be met for an RPF check to be performed on the RP address'?
- A. The PIM DM device receives a multicast packet and has no directly connected PIM neighbor
- B. The PIM DM device receives a multicast packet and has no directly connected members
- C. The PIM router or multilayer switch has a shared-tree state
- D. The PIM router or multilayer switch has a source-tree state
Answer: C
NEW QUESTION # 28
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 scheme, 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.
What is the solution to the fault condition?
- A. In configuration mode, using the interface range port-channel 13, port-channel 23, then configure switchport trunk allowed vlan none followed by switchport trunk allowed vlan 10,200 commands.
- B. In configuration mode, using the interface range port-channel 13, port-channel 23, then configure switchport trunk allowed vlan 10,200 followed by interface Fastethernet 1/0/1, then no shutdown commands.
- C. In configuration mode, using the interface range port-channel 23, port-channel 24, then configure switchport trunk allowed vlan none followed by switchport trunk allowed vlan 10,20, commands.
- D. In configuration mode, using the interface range port-channel 23, port-channel 24, then configure switchport trunk allowed vlan none followed by switchport trunk allowed vlan 10,20,200 commands.
Answer: A
Explanation:
Solution
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 # 29
An engineer uses Postman and YANG to configure a router with:
OSPF process ID 200
network 172.16.10.128/26 enabled for Area 0
Which get-config reply verifies that the model set was designed correctly?
- A.
- B.
- C.
- D.
Answer: A
NEW QUESTION # 30
Drag and drop the types of WAN connectivity from the left onto the connectivity use cases on the right.
Answer:
Explanation:
Explanation
Graphical user interface, application Description automatically generated
NEW QUESTION # 31
An engineer must design a management network that enables SSH, NTP, FTP, and SNMP over the production network. The design requires the management of routers and switches that exist across different networks. Which feature must the design include?
- A. dedicated management console connection per device
- B. dedicated management VRF connection per device
- C. Management Plane Protection
- D. terminal server
Answer: B
NEW QUESTION # 32
An engineer is designing a Layer 3 campus network running EIGRP between the core, aggregation, and access layers. The access layer switches will be connected to the aggregation layer using Layer 3 copper connections. The engineer wants to improve convergence time for access layer switch failures. Which technique must the design include?
- A. EIGRP summarization from access to aggregation layer
- B. enabling BFD for EIGRP on the access layer uplinks
- C. EIGRP summarization from core to aggregation layer
- D. reducing the EIGRP Hello / Hold timer values
Answer: B
Explanation:
Section: Advanced Enterprise Campus Networks
NEW QUESTION # 33
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 creating branch office as a temporary measure. The new branch office is assigned area 2. Which OSPF configuration enables all three locations to exchange routes?
- A. The existing branch office must be configured as a stub area
- B. A sham link must be configured between the new branch office and HQ
- C. The new branch office must be configured as a stub area
- D. A virtual link must be configured between the new branch office and HQ
Answer: D
NEW QUESTION # 34
Which two BGP features will result in successful route exchanges between eBGP neighbors sharing the same AS number? (Choose two.)
- A. bestpath as-path ignore
- B. as-override
- C. client-to-client reflection
- D. advertise-best-external
- E. allow-as-in
Answer: B,E
NEW QUESTION # 35
Drag and drop the characteristics from the left onto the telemetry mode they apply to on the right.
Answer:
Explanation:
NEW QUESTION # 36
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. IntServ
- B. WRED
- C. DiffServ
- D. LLQ
Answer: A
Explanation:
Explanation/Reference:
NEW QUESTION # 37
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