Aug-2021 Latest PracticeVCE 300-420 Exam Dumps with PDF and Exam Engine Free Updated Today!
Following are some new 300-420 Real Exam Questions!
NEW QUESTION 20 
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 a tunnel between routers E and F in area 10.
- B. Make area 10 a not-so-stubby area.
- C. Move the link between routers C and D to area 10.
- D. Create an OSPF virtual link between routers E and F.
Answer: C
NEW QUESTION 21
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. Advertise the local LAN using the network command and the passive-interface feature
- C. Redistribute the local LAN network using the redistribute connected command
- D. Advertise the local LAN subnet as a stub network
Answer: B
Explanation:
Section: Advanced Addressing and Routing Solutions
NEW QUESTION 22
Drag and drop the properties from the left onto the protocols they describe on the right.
Answer:
Explanation:
NEW QUESTION 23
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 a tunnel between routers E and F in area 10.
- B. Make area 10 a not-so-stubby area.
- C. Move the link between routers C and D to area 10.
- D. Create an OSPF virtual link between routers E and F.
Answer: C
NEW QUESTION 24
A network engineer must connect two sites across a public network using a secure tunneling technology that supports multicast traffic. Which technology must be chosen?
- A. IPsec
- B. PPTP
- C. GRE over IPsec
- D. GRE
Answer: C
NEW QUESTION 25
Which two statements about VRRP object tracking are true? (Choose two)
- A. VRRP supports only interface tracking
- B. VRRP can track the status of interfaces and routes
- C. The priority of a VRRP device can change in accordance with the up or down status of a VRRP object
- D. A VRRP group can track only one object at a time
- E. The VRRP interface priority must be manually configured by the administrator
Answer: B,C
Explanation:
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2019/pdf/BRKCRS-2821.pdf
NEW QUESTION 26
What is the purpose of a Cisco SD-Access underlay network?
- A. to abstract IP-based connectivity from physical connectivity
- B. to provide virtualization by encapsulating network traffic over IP tunnels
- C. to emulate LAN segments to transport Layer 2 frames over a Layer 3 network
- D. to establish physical connectivity between switches and routers
Answer: D
NEW QUESTION 27
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. PIM-SM
- B. any-source multicast
- C. PIM-SSM
- D. BIDIR-PIM
Answer: C
NEW QUESTION 28
An enterprise customer has these requirements:
* end-to-end QoS for the business-critical applications and VoIP services based on CoS marking.
* flexibility to offer services such as IPv6 and multicast without any reliance on the service provider.
* support for full-mesh connectivity at Layer 2.
Which WAN connectivity option meets these requirements?
- A. VPWS
- B. MPLS VPN
- C. DMVPN
- D. VPLS
Answer: D
NEW QUESTION 29
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. site-to-site IPv6 over IPv4 tunnels
- B. dual stack
- C. host-initiated tunnels
- D. AFT for public web presence
Answer: B
Explanation:
Section: Advanced Addressing and Routing Solutions
NEW QUESTION 30 
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 a tunnel between routers E and F in area 10.
- B. Make area 10 a not-so-stubby area.
- C. Move the link between routers C and D to area 10.
- D. Create an OSPF virtual link between routers E and F.
Answer: C
Explanation:
Section: Advanced Addressing and Routing Solutions
Explanation/Reference:
NEW QUESTION 31
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: 10.0.0.0/20
* Branch1: 10.0.64.0/21
* Branch2: 10.0.128.0/21 - B. * Campus: 10.0.0.0/10
* Branch1: 10.64.0.0/10
* Branch2: 10.128.0.0/10 - C. * Campus: 10.0.0.0/18
* Branch1: 10.0.192.0/21
* Branch2: 10.0.200.0/21 - D. * Campus: 10.0.0.0/16
* Branch1: 10.255.0.0/20
* Branch2: 10.255.16.0/20
Answer: C
NEW QUESTION 32
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 33
Refer to the exhibit. A customer needs to apply QoS to the network management traffic passing through the GigabitEthernet0/2 interface. All eight queuing classes are in use, so the new requirement must be integrated into the existing policy. Which solution must the customer choose?
- A. Mark the traffic to DSCP CS4 and assign it to the SIGNALLING class. Then, prioritize traffic within the class.
- B. Mark traffic to DSCP CS5 and assign it to the SIGNALLING class. Then, baseline existing queue sizes to determine if additional bandwidth can be provisioned to the SIGNALLING class.
- C. Mark the traffic to DSCP CS6 and assign it to the ROUTING class Then, prioritize traffic within the class.
- D. Mark the traffic to DSCP CS2 and assign it to the ROUTING class Then, baseline existing queue sizes to determine if additional bandwidth can be provisioned to the ROUTING class
Answer: D
NEW QUESTION 34
An architect is working on a design to connect a company's main site to several small to medium-sized remote branches. The solution must include redundant WAN links, but the customer has a limited budget and wants the ability to increase the link speed easily in the future. QoS will not on the branch routers so there is no need for consistent end-to-end QoS. Which solution does the architect propose?
- A. dual-homed WAN MPLS and Internet links via dual edge routers
- B. dual-homed Internet with a single edge router running a site-to-site VPN topology
- C. dual-homed WAN MPLS with single edge router
- D. dual-homed Internet with dual edge routers running a hub-and-spoke VPN topology
Answer: B
NEW QUESTION 35
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. LLQ
- C. WRED
- D. IntServ
Answer: D
Explanation:
Explanation/Reference:
NEW QUESTION 36
Drag and drop the properties from the left onto the Cisco SD-WAN components that perform them on the right.
Answer:
Explanation:
NEW QUESTION 37
When a first hop redundancy solution is designed, which protocol ensures that load balancing occurs over multiple routers using a single virtual IP address and multiple virtual MAC addresses?
- A. HSRP
- B. VRRP
- C. GLBP
- D. IRDP
Answer: C
NEW QUESTION 38 
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 R3 and R4 as ABRs
- B. a new OSPF area for R1 and R2 connections, with R5 and R6 as ABRs
- C. a new OSPF area for R1 and R2 connections, with R1 and R2 as ABRs
- D. a new OSPF area for R3 and R4 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: B,D
Explanation:
Section: Advanced Addressing and Routing Solutions
Explanation/Reference:
NEW QUESTION 39
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