Presencial-Architecture CCNP ENCOR 350-401

What is the difference between CEF and process switching?

CEF processes packets that are too complex for process switching to manage.
Process switching is faster than CEF.
CEF uses the FIB and the adjacency table to make forwarding decisions, whereas process switching punts each packet.
CEF is more CPU-intensive than process switching.

Which statement about Cisco Express Forwarding is true?

The CPU of a router becomes directly involved with packet-switching decisions.
It uses a fast cache that is maintained in a router data plane.
It maintains two tables in the data plane: the FIB and adjacency table.
It makes forwarding decisions by a process that is scheduled through the IOS scheduler

How does the RIB differ from the FIB?

The FIB maintains network topologies and routing tables. The RIB is a list of routes to particular network destinations.
The FIB includes many routes to a single destination. The RIB is the best route to a single destination.
The RIB is used to create network topologies and routing tables. The FIB is a list of routes to particular network destinations.
The RIB includes many routes to the same destination prefix. The FIB contains only the best route.

What is the difference between a RIB and a FIB?

The FIB is populated based on RIB content.
The RIB maintains a mirror image of the FIB.
The RIB is used to make IP source prefix-based switching decisions.
The FIB is where all IP routing information is stored.

What are two differences between the RIB and the FIB? (Choose two.)

FIB is a database of routing prefixes, and the RIB is the information used to choose the egress interface for each packet.
The FIB is derived from the data plane, and the RIB is derived from the FIB.
The RIB is a database of routing prefixes, and the FIB is the information used to choose the egress interface for each packet.
The RIB is derived from the control plane, and the FIB is derived from the RIB.
The FIB is derived from the control plane, and the RIB is derived from the FIB.

A company plans to implement intent-based networking in its campus infrastructure.

Which design facilities a migrate from a traditional campus design to a programmer fabric designer?

Layer 2 access
three-tier
two-tier
routed access

Which benefit is offered by a cloud infrastructure deployment but is lacking in an on-premises deployment?

efficient scalability
virtualization
storage capacity
supported systems

What are two reasons a company would choose a cloud deployment over an on-prem deployment? (Choose two.)

Cloud costs adjust up or down depending on the amount of resources consumed. On-prem costs for hardware, power, and space are on-going regardless of usage.
Cloud resources scale automatically to an increase in demand. On-prem requires additional capital expenditure.
In a cloud environment, the company is in full control of access to their data. On-prem risks access to data due to service provider outages.
In a cloud environment, the company controls technical issues. On-prem environments rely on the service provider to resolve technical issues.
Cloud deployments require long implementation times due to capital expenditure processes. On-prem deployments can be accomplished quickly using operational expenditure processes.

In a three-tier hierarchical campus network design, which action is a design best-practice for the core layer?

provide QoS prioritization services such as marking, queueing, and classification for critical network traffic
provide redundant Layer 3 point-to-point links between the core devices for more predictable and faster convergence
provide advanced network security features such as 802.1X, DHCP snooping, VACLs, and port security
provide redundant aggregation for access layer devices and first-hop redundancy protocols such as VRRP

In a three-tier hierarchical campus network design, which action is a design best-practice for the core layer?

provide QoS prioritization services such as marking, queueing, and classification for critical network traffic
provide redundant Layer 3 point-to-point links between the core devices for more predictable and faster convergence
provide advanced network security features such as 802.1X, DHCP snooping, VACLs, and port security
provide redundant aggregation for access layer devices and first-hop redundancy protocols such as VRRP

What is a benefit of deploying an on-premises infrastructure versus a cloud infrastructure deployment?

faster deployment times because additional infrastructure does not need to be purchased
lower latency between systems that are physically located near each other
less power and cooling resources needed to run infrastructure on-premises
ability to quickly increase compute power without the need to install additional hardware

Which two network problems indicate a need to implement QoS in a campus network? (Choose two.)

port flapping
excess jitter
misrouted network packets
duplicate IP addresses
bandwidth-related packet loss

During deployment, a network engineer notices that voice traffic is not being tagged correctly as it traverses the network. Which COS to DSCP map must be modified to ensure that voice traffic is treated properly?

COS of 5 to DSCP 46
COS of 7 to DSCP 48
COS of 6 to DSCP 46
COS of 3 to DSCP of 26

Which QoS queuing method transmits packets out of the interface in the order the packets arrive?

custom
weighted- fair
FIFO
priority

Which marking field is used only as an internal marking within a router?

QOS Group
Discard Eligiblity
IP Precedence
MPLS Experimental

Which statement about the default QoS configuration on a Cisco switch is true?

All traffic is sent through four egress queues
Port trust is enabled
The Port Cos value is 0
The Cos value of each tagged packet is modified

An engineer is describing QoS to a client.

Which two facts apply to traffic policing? (Choose two.)

Policing should be performed as close to the source as possible.
Policing adapts to network congestion by queuing excess traffic.
Policing should be performed as close to the destination as possible
Policing drops traffic that exceeds the defined rate.
Policing typically delays the traffic, rather than drops it.

What is the difference between the MAC address table and TCAM?

TCAM is used to make L2 forwarding decisions. CAM is used to build routing tables.
Router prefix lookups happen in TCAM. MAC address table lookups happen in CAM.
The MAC address table supports partial matches. TCAM requires an exact match.
The MAC address table is contained in TCAM. ACL and QoS information is stored in TCAM.

How does QoS traffic shaping alleviate network congestion?

It drops packets when traffic exceeds a certain bitrate.
It buffers and queues packets above the committed rate.
It fragments large packets and queues them for delivery.
It drops packets randomly from lower priority queues.

Which QoS component alters a packet to change the way that traffic is treated in the network?

policing
classification
marking
shaping

In a Cisco Catalyst switch equipped with two supervisor modules an administrator must temporally remove the active supervisor from the chassis to perform hardware maintenance on it. Which mechanism ensure that the active supervisor removal is not disruptive to the network operation?

NSF/NSR
SSO
HSRP
VRRP

What are two considerations when using SSO as a network redundancy feature? (Choose two)

must be combined with NSF to support uninterrupted Layer 2 operations
must be combined with NSF to support uninterrupted Layer 3 operations
both supervisors must be configured separately
the multicast state is preserved during switchover
requires synchronization between supervisors in order to guarantee continuous connectivity

Which component handles the orchestration plane of the Cisco SD-WAN?

vBond
tvSmart
vManage
WAN Edge

In a Cisco SD-WAN solution, how is the health of a data plane tunnel monitored?

with IP SLA
ARP probing
using BFD
with OMP

When a wired client connects to an edge switch in an SDA fabric, which component decides whether the client has access to the network?

control-plane node
Identity Service Engine
RADIUS server
edge node

What are two device roles in Cisco SD-Access fabric? (Choose two)

core switch
vBond controller
edge node
access switch
border node

In an SD-Access solution what is the role of a fabric edge node?

to connect external Layer 3- network to the SD-Access fabric
to connect wired endpoint to the SD-Access fabric
to advertise fabric IP address space to external network
to connect the fusion router to the SD-Access fabric

Which control plane protocol is used between Cisco SD-WAN routers and vSmart controllers?

BGP
OMP
TCP
UDP

What is a VPN in a Cisco SD-WAN deployment?

common exchange point between two different services
attribute to identify a set of services offered in specific places in the SD-WAN fabric
virtualized environment that provides traffic isolation and segmentation in the SD-WAN fabric
virtual channel used to carry control plane information

What is the role of the vSmart controller in a Cisco SD-WAN environment?

It performs authentication and authorization.
It manages the control plane.
It is the centralized network management system.
It manages the data plane.

Which controller is the single plane of management for Cisco SD-WAN?

vBond
vEdge
vSmart
vManage

Which action is the vSmart controller responsible for in a Cisco SD-WAN deployment?

onboard WAN Edge nodes into the Cisco SD-WAN fabric
gather telemetry data from WAN Edge routers
distribute policies that govern data forwarding performed within the Cisco SD-WAN fabric
handle, maintain, and gather configuration and status for nodes within the Cisco SD-WAN fabric

Which action is the vSmart controller responsible for in an SD-WAN deployment?

onboard vEdge nodes into the SD-WAN fabric
distribute security information for tunnel establishment between vEdge routers
manage, maintain, and gather configuration and status for nodes within the SD-WAN fabric
gather telemetry data from vEdge routers

Where is radio resource management performed in a Cisco SD-Access wireless solution?

DNA Center
control plane node
wireless controller
Cisco CMX

Which technology is used to provide Layer 2 and Layer 3 logical networks in the Cisco SD-Access architecture?

underlay network
VPN routing/forwarding
easy virtual network
overlay network

Which statement about a fabric access point is true?

It is in local mode and must be connected directly to the fabric border node
It is in FlexConnect mode and must be connected directly to the fabric border node
It is in local mode an must connected directly to the fabric edge switch
It is in FlexConnect mode and must be connected directly to the fabric edge switch

In a Cisco SD-Access wireless architecture, which device manages endpoint ID to edge node bindings?

fabric control plane node
fabric wireless controller
fabric border node
fabric edge node

Which statement about a Cisco APIC controller versus a more traditional SDN controller is true?

APIC uses a policy agent to translate policies into instructions
APIC supports OpFlex as a Northbound protocol
APIC does support a Southbound REST API
APIC uses an imperative model

What the role of a fusion in an SD-Access solution?

provides connectivity to external networks
acts as a DNS server
performs route leaking between user-defined virtual networks and shared services
provides additional forwarding capacity to the fabric

On which protocol or technology is the fabric data plane based in Cisco SD-Access fabric?

LISP
IS-IS
Cisco TrustSec
VXLAN

Which description of an SD-Access wireless network infrastructure deployment is true?

The access point is part of the fabric underlay
The WLC is part of the fabric underlay
The access point is part the fabric overlay
The wireless client is part of the fabric overlay

In a Cisco SD-Access fabric, which control plane protocol is used for mapping and resolving endpoints?

LISP
DHCP
SXP
VXLAN

Which description of an SD-Access wireless network infrastructure deployment is true?

The access point is part of the fabric underlay
The WLC is part of the fabric underlay
The access point is part the fabric overlay
The wireless client is part of the fabric overlay

In a Cisco SD-Access fabric, which control plane protocol is used for mapping and resolving endpoints?

LISP
DHCP
SXP
VXLAN

What is the function of the fabric control plane node in a Cisco SD-Access deployment?

It is responsible for policy application and network segmentation in the fabric.
It performs traffic encapsulation and security profiles enforcement in the fabric.
It holds a comprehensive database that tracks endpoints and networks in the fabric.
It provides integration with legacy nonfabric-enabled environments.

In a Cisco SD-Access wireless architecture, which device manages endpoint ID to Edge Node bindings?

fabric control plane node
fabric wireless controller
fabric border node
fabric edge node

In a wireless Cisco SD-Access deployment, which roaming method is used when a user moves from one access point to another on a different access switch using a single WLC?

Layer 3
inter-xTR
auto anchor
fast roam

Which protocol is responsible for data plane forwarding in a Cisco SD-Access deployment?

VXLAN
IS-IS
OSPF
LISP

Which tunneling technique is used when designing a Cisco SD-Access fabric data plane?

VXLAN
VRF Lite
VRF
LISP

Presencial-Architecture CCNP ENCOR 350-401

Presencial-Architecture CCNP ENCOR 350-401

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