Which two steps can be taken to improve convergence in an OSPF network? (Choose two.)

Use Bidirectional Forwarding Detection

Merge all the areas into one backbone area

Make all non-backbone areas stub areas

Span the same IP network across multiple areas.

Which two statements describe source trees in a multicast environment? (Choose two.)

Source trees guarantee the minimum amount of network latency for forwarding multicast traffic

Source trees create an optimal path between the source and the receivers

Source trees guarantee the minimum amount of network latency for forwarding multicast traffic

Source trees create an optimal path between the source and the receivers

Source trees use a single common root placed at some chosen point in the network

Source trees can introduce latency in packet delivery

Source trees can create suboptimal paths between the source and the receivers

A company with multiple service providers wants to speed up BGP convergence time in the event a failure occurs with their primary link. Which approach achieves this goal and does not impact router CPU utilization?

Utilize BFD and keep the default BGP timers

Utilize BFD and tune the multiplier to 50

Decrease the BGP keepalive timer

Utilize BFD and keep the default BGP timers

What is the purpose of an edge node in an SD-Access network fabric?

Edge nodes identify and authenticate endpoints and register endpoint information with control plane nodes.

Edge nodes track endpoint IDs to location mappings, along with IPv4, IPv6, or MAC addresses.

Edge nodes are the gateway between the fabric domain and network outside of the fabric.

Edge nodes resolve lookup requests from edge and border nodes to locate destination endpoint IDs.

A branch office has a primary L3VPN MPLS connection back to the main office and an IPSEC VPN tunnel that serves as backup. Which design ensures that data is sent over the backup connection only if the primary MPLS circuit is down?

Use OSPF with a passive-interface command on the backup connection.

Use EIGRP to establish a neighbor relationship with the main office via L3VPN MPLS and the IPSEC VPN tunnel.

Use BGP with the multipath feature enabled to force traffic via the primary path when available.

Use static routes tied to an IP SLA to prefer the primary path while a floating static route points to the backup connection.

Use OSPF with a passive-interface command on the backup connection.

Company A recently acquired another company. Users of the newly acquired company must be able to access a server that exists on Company A’s network, both companies use overlapping IP address ranges. Which action conserves IP address space and provides access to the server?

Use a single IP address to create overload NAT

Use a single IP address to create a static NAT entry

Build one-to-one NAT translation for every user that needs access

Re-IP overlapping address space in the acquired company

In an SD-WAN architecture, which methods are used to bootstrap a vEdge router?

DHCP options or manual configuration

Which two statements about VRRP advertisements are true? (Choose two.)

They are sent only from the master router.

They include priority information.

They are sent from the master router and standby routers.

They include VRRP timer information.

They are sent only from the master router.

They include priority information.

They are sent every three seconds by default.

Which two statements about VRRP object tracking are true? (Choose two)

The priority of a VRRP device can change in accordance with the up or down status of a VRRP object

VRRP can track the status of interfaces and routes

The priority of a VRRP device can change in accordance with the up or down status of a VRRP object

The VRRP interface priority must be manually configured by the administrator

A VRRP group can track only one object at a time

VRRP can track the status of interfaces and routes

VRRP supports only interface tracking

Which common issue causes intermittent DMVPN tunnel flaps?

a routing neighbor reachability issue

that the GRE tunnel to hub router is not encrypted

Which two best practices must be followed when designing an out-of-band management network?(Choose two.)

Back up data using the management network

Ensure that the management network is a backup to the data network

How is internet access provided to a WAN edge router that is connected to a MPLS transport link?

TLOC extensions are used to route traffic to a WAN Edge router that is connected to the Internet transport network

OMP advertises a default route from a WAN Edge router that is connected to the MPLS and internet transport networks

Internet access must be provided at the WAN Edge router through either a 4G/5G link or local Internet circuit

An extranet must be provided in the MPLS transport network to allow private traffic to reach the public internet

TLOC extensions are used to route traffic to a WAN Edge router that is connected to the Internet transport network

A network engineer must segregate three interconnected campus networks using IS-IS routing. A two-layer hierarchy must be used to support large routing domains and to avoid more specific routes from each campus network being advertised to other campus network routers automatically. Which two actions does the engineer take to accomplish this segregation? (Choose two.)

Designate two IS-IS routers from each campus to act as Level 1/Level 2 backbone routers at the edge of each campus network.

Assign a unique IS-IS NET value for each campus, and configure internal campus routers with Level 1 routing.

Designate two IS-IS routers as BDR routers at the edge of each campus, and configure one BDR for all Level 1 routers and one BDR for all Level 2 routers.

Designate two IS-IS routers from each campus to act as Level 1/Level 2 backbone routers at the edge of each campus network.

Assign the same IS-IS NET value for each campus, and configure internal campus routers with Level 1/ Level 2 routing.

Utilize different MTU values for each campus network segment. Level 2 backbone routers must utilize a larger MTU size of 9216.

Assign a unique IS-IS NET value for each campus, and configure internal campus routers with Level 1 routing.

Refer to the exhibit. 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 new OSPF area for R3 and R4 connections, with R5 and R6 as ABRs

a new OSPF area for R1 and R2 connections, with R5 and R6 as ABRs

a new OSPF area for R1 and R2 connections, with R1 and R2 as ABRs

a new OSPF area for R3 and R4 connections, with R5 and R6 as ABRs

a new OSPF area for R3 and R4 connections, with R3 and R4 as ABRs

a new OSPF area for R1, R2, R3, and R4 connections, with R1, R2, R3, and R4 as ABRs

a new OSPF area for R1 and R2 connections, with R5 and R6 as ABRs

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?

Cisco Application Policy Infrastructure Controller Enterprise Module

What is the role of a control-plane node in a Cisco SD-Access architecture?

map system that manages endpoint to device relationships

fabric device that connects wired endpoints to the SD-Access fabric

map system that manages endpoint to device relationships

fabric device that connects APs and wireless endpoints to the SD-Access fabric

map system that manages External Layer 3 networks

How is end-to-end microsegmentation enforced in a Cisco SD-Access architecture?

SGTs and SGTACLs are used to control access to various resources.

VLANs are used to segment traffic at Layer 2.

5-tuples and ACLs are used to permit or deny traffic.

SGTs and SGTACLs are used to control access to various resources.

VRFs are used to segment traffic at Layer 3.

An engineer is upgrading a company’s main site to include a connection to a second ISP. The company will receive full Internet routing tables from both ISPs via BGP. The engineer must ensure that the company does not become a transit autonomous system. Which solution should be included in this design?

Tag incoming routes from both ISPs with BGP community no-export.

Lower the MED for updates sent to the secondary ISP.

Use a route-map to prevent all prefixes from being advertised to either ISP.

Modify the local-preference for routes incoming from the primary ISP.

Which two techniques improve the application experience in a Cisco SD-WAN design? (Choose two.)

utilizing forward error correction

implementing a stateful application firewall

How is redundancy achieved among Cisco vBond Orchestrators in a Cisco SD-WAN deployment?

The IP addresses of all Orchestrators are mapped to a single DNS name.

The closest Orchestrator to each Cisco WAN Edge router is selected.

Cisco WAN Edge routers are configured with all Orchestrators using their IP addresses and priority.

A single Cisco Orchestrator is deployed in each network.

Which design element should an engineer consider when multicast is included in a Cisco SD-Access architecture?

Multicast traffic is transported in the overlay and the EID space for wired and wireless clients.

PIM SSM must run in the underlay.

Multicast clients reside in the underlay, and the multicast source is outside the fabric or in the overlay.

Rendezvous points must be used in a PIM SSM deployment.

Multicast traffic is transported in the overlay and the EID space for wired and wireless clients.

What is the function of the multicast Reverse Path Forwarding check?

It allows for a loop-free distribution tree from the source to receivers.

It serves as an Auto RP Mapping agent.

It prevents bootstrap messages from reaching all routers.

It is used to discover and announce RP-set information.

A client is moving to Model-Driven Telemetry and requires periodic updates. What must the network architect consider with this design?

Periodic updates include a full copy of the data that is subscribed to.

Updates that contain changes within the data are sent only when changes occur.

Empty data subscriptions do not generate empty update notifications.

Periodic updates include a full copy of the data that is subscribed to.

The primary push update is sent immediately and cannot be delayed.

Cisco 300-420 Practice Test 2 - Free Online Exam Prep & Questions

Which two routing protocols allow for unequal cost load balancing? (Choose two.)

A.

EIGRP

B.

IS-IS

C.

BGP

D.

OSPF

E.

RIPng

Cisco 300-420 Practice Test 2

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