Pass 300-420 Exam - Real Test Engine PDF with 148 Questions
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Cisco 300-420: Key exam details
Cisco kindly reveals all the basic details and information about each of its exams, and the 300 420 test is not an exception. It consists of about 90-100 questions and the time allocated for a candidate to complete all of them is 90 minutes. The exam is known to be available in several languages, including Japanese and English. It is available at a cost of $300. This fee is applicable to those individuals taking the test within the United States. Those students who are applying for it in other countries should check the official website to find out the actual price of the exam. You can also know this information directly on the Pearson VUE platform.
NEW QUESTION 53
What are two valid scaling techniques when an EIGRP network is designed that consists of more than 1000 routers? (Choose two.)
- A. Modify delay parameters on the links
- B. Used sub-second timers
- C. Implement multiple EIGRP autonomous systems
- D. Use structured hierarchical topology with route summarization
- E. Use the distribute-list command to filter routes
Answer: C,D
NEW QUESTION 54
Which two steps can be taken to improve convergence in an OSPF network? (Choose two.)
- A. Tune OSPF parameters
- B. Merge all the areas into one backbone area
- C. Make all non-backbone areas stub areas
- D. Span the same IP network across multiple areas.
- E. Use Bidirectional Forwarding Detection
Answer: A,C
Explanation:
Section: Advanced Addressing and Routing Solutions
NEW QUESTION 55
Refer to the exhibit.
Which solution decreases the EIGRP convergence time?
- A. Enable subsecond timers
- B. Increase the hold time value
- C. Increase the dead timer value
- D. Enable stub routing on the spokes
Answer: D
NEW QUESTION 56
When designing interdomain multicast, which two protocols are deployed to achieve communication between multicast sources and receivers? (Choose two.)
- A. BIDIR-PIM
- B. MP-BGP
- C. MLD
- D. IGMPv2
- E. MSDP
Answer: B,E
NEW QUESTION 57
Which two techniques improve the application experience in a Cisco SD-WAN design? (Choose two.)
- A. implementing a stateful application firewall
- B. utilizing quality of service
- C. implementing AMP
- D. implementing Cisco Umbrella
- E. utilizing forward error correction
Answer: B,E
NEW QUESTION 58
A customer's current Layer 2 infrastructure is running Spanning Tree 802.1d, and all configuration changes are manually implemented on each switch. An architect must redesign the Layer 2 domain to achieve these goals:
* reduce the impact of topology changes
* reduce the time spent on network administration
* reduce manual configuration errors
Which two solutions should the architect include in the new design? (Choose two.)
- A. Implement Rapid PVST+ instead of STP.
- B. Configure dynamic trunking protocol to propagate VLAN information.
- C. Use VTP to propagate VLAN information and to prune unused VLANs.
- D. Implement MST instead of STP.
- E. Configure broadcast and multicast storm control on all switches.
Answer: C,E
Explanation:
Section: Advanced Enterprise Campus Networks
NEW QUESTION 59
A customer's current Layer 2 infrastructure is running Spanning Tree 802.1d, and all configuration changes are manually implemented on each switch. An architect must redesign the Layer 2 domain to achieve these goals:
* reduce the impact of topology changes
* reduce the time spent on network administration
* reduce manual configuration errors
Which two solutions should the architect include in the new design? (Choose two.)
- A. Implement Rapid PVST+ instead of STP.
- B. Configure dynamic trunking protocol to propagate VLAN information.
- C. Use VTP to propagate VLAN information and to prune unused VLANs.
- D. Implement MST instead of STP.
- E. Configure broadcast and multicast storm control on all switches.
Answer: C,E
NEW QUESTION 60
A network solution is being designed for a company that connects to multiple Internet service providers. Which Cisco proprietary BGP path attribute will influence outbound traffic flow?
- A. Community
- B. AS Path
- C. Weight
- D. Local Preference
- E. MED
Answer: C
Explanation:
Section: Advanced Addressing and Routing Solutions
NEW QUESTION 61
An engineer is designing a QoS policy that queues excess packets for later transmission. Which mechanism must be included in the design?
- A. shaping
- B. policing
- C. WRED
- D. RED
Answer: A
NEW QUESTION 62
Which feature is required for graceful restart to recover from a processor failure?
- A. Bidirectional Forwarding Detection
- B. Virtual Switch System
- C. Stateful Switchover
- D. Cisco Express Forwarding
Answer: D
NEW QUESTION 63
Which feature is required for graceful restart to recover from a processor failure?
- A. Bidirectional Forwarding Detection
- B. Virtual Switch System
- C. Stateful Switchover
- D. Cisco Express Forwarding
Answer: D
Explanation:
Section: Advanced Enterprise Campus Networks
NEW QUESTION 64
An engineer must design a QoS solution for a customer that is connected to an ISP over a 1Gbps link with a 100Mbps CIR. The ISP aggressively drops all traffic received over which is causing numerous TCP retransmissions. The customer is not using any RTP applications but wants to maximize bandwidth usage up to the CIR. Which QoS solution engineer choose?
- A. Policing
- B. Queuing
- C. Policer with markdown
- D. Traffic shaping
Answer: A
Explanation:
https://www.cisco.com/c/en/us/support/docs/quality-of-service-qos/qos-policing/19645-policevsshape.html
NEW QUESTION 65
Refer to the exhibit.
Which solution decreases the EIGRP convergence time?
- A. Enable subsecond timers
- B. Increase the hold time value
- C. Increase the dead timer value
- D. Enable stub routing on the spokes
Answer: D
NEW QUESTION 66
Which of the following features does GLBP provide, but not HSRP and VRRP? (Choose all that apply.)
- A. Support for multiple gateways
- B. Support for interface tracking
- C. Support for automatic load balancing
- D. Support for single active router
Answer: A,C
Explanation:
Support for automatic load balancing and support for multiple gateways are two features that are provided by Gateway Load Balancing Protocol (GLBP) but not by Hot Standby Routing Protocol (HSRP) or Virtual Router Redundancy Protocol (VRRP).
GLBP, HSRP, and VRRP provide a redundant and fault-tolerant solution in case of first-hop router failure in a network. The basic operation of these three protocols is the same. In all three protocols, a group of routers on the same LAN is formed. One of the routers is selected as the active router and another as the standby router.
The router with the highest priority is automatically selected as the active router. If the active router fails, the standby router assumes the responsibilities of the active router. The role of the active router is to forward the packets from the hosts to the virtual router (default gateway).
GLBP provides automatic load balancing between multiple routers by configuring multiple MAC addresses but a single virtual IP address. Every active virtual forwarder (AVF) in the group is configured with the virtual IP address but with different MAC addresses. All such AVFs can then participate in the packet-forwarding process. Multiple gateways then can share the load. On the contrary, HSRP and VRRP do not support automatic load balancing. Both these protocols require additional configuration on all the routers that need to load balance. The additional configuration involves using multiple groups on the routers or assignment of different default gateways for the hosts.
Note that GLBP and VRRP are supported by both Cisco and non-Cisco routers, whereas, HSRP is supported only by Cisco routers.
Single active router and interface tracking both are supported by GLBP, HSRP, and VRRP.
Objective:
Infrastructure Services
Sub-Objective:
Configure and verify first-hop redundancy protocols
References:
Home > End-of-Sale and End-of-Life Products > Cisco IOS Software Releases 12.2.T > Product Literature > White Papers > GLBP Gateway Load Balancing Protocol > Information About Gateway Load Balancing Protocol Home > Support > Technology Support > IP > IP Application Services > Design > Design Technotes > Hot Standby Router Protocol Features and Functionality > HSRP Background and Operations > HSRP Operation
NEW QUESTION 67
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 Application Policy Infrastructure Controller Enterprise Module
- B. Cisco Network Data Platform
- C. Cisco Identity Services Engine
- D. Cisco TrustSec
Answer: D
NEW QUESTION 68
An engineer is looking for a standards-driven YANG model to manage a multivendor network environment.
Which model must the engineer choose?
- A. OpenConfig
- B. Native
- C. IETF
- D. IEEE NETCONF
Answer: C
NEW QUESTION 69
A global organization with several branches hired a network architect to design an overlay VPN solution. The branches communicate with each other frequently. The customer expects to add more branches in the future. To meet the customer's security requirements, the architect plans to provide traffic protection using dynamic IPsec tunnels. Which solution should the architect choose?
- A. GETVPN
- B. EasyVPN
- C. DMVPN
- D. L2TP
Answer: C
NEW QUESTION 70
When IPsec VPNs are designed, what is a unique requirement if support for IP Multicast is required?
- A. IPsec forwarding using tunnel mode
- B. encapsulation of traffic with GRE or VTI
- C. additional bandwidth for headend
- D. IPsec forwarding using transport mode
Answer: B
Explanation:
Section: WAN for Enterprise Networks
Explanation/Reference:
NEW QUESTION 71
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. any-source multicast
- B. BIDIR-PIM
- C. PIM-SSM
- D. PIM-SM
Answer: C
NEW QUESTION 72
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:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_isis/configuration/15-mt/irs-15-mt-book/ip6-route-multi-isis.html
NEW QUESTION 73
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 C
- C. Option B
- D. Option D
Answer: D
NEW QUESTION 74
Which design element should an engineer consider when multicast is included in a Cisco SD-Access architecture?
- A. PIM SSM must run in the underlay.
- B. Rendezvous points must be used in a PIM SSM deployment.
- C. Multicast traffic is transported in the overlay and the EID space for wired and wireless clients.
- D. Multicast clients reside in the underlay, and the multicast source is outside the fabric or in the overlay.
Answer: D
NEW QUESTION 75
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 core to aggregation layer
- B. enabling BFD for EIGRP on the access layer uplinks
- C. reducing the EIGRP Hello / Hold timer values
- D. EIGRP summarization from access to aggregation layer
Answer: B
NEW QUESTION 76
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