Ensurepass

QUESTION 131

A Service Provider is designing a solution for a managed CE service to a number of local customers using a single CE platform and wants to have logical separation on the CE platform using Virtual Routing and Forwarding (VRF) based on IP address ranges or packet length. Which is the most scalable solution to provide this type of VRF Selection process on the CE edge device?

 

A.

Static Routes for Route Leaking

B.

Policy Based Routing

C.

Multi-Protocol BGP

D.

OSPF per VRF Instance

 

Correct Answer: B

 

 

QUESTION 132

You are designing an Out of Band Cisco Network Admission Control, Layer 3 Real-IP Gateway deployment for a customer. Which VLAN must be trunked back to the Clean Access Server from the access switch?

 

A.

untrusted VLAN

B.

user VLAN

C.

management VLAN

D.

authentication VLAN

 

Correct Answer: A

 

 

QUESTION 133

How should multiple OSPF areas be designed when deployed on a classic three-layer (core/distribution/access) network hierarchy?

 

A.

The OSPF flooding domain boundary should be at the edge of the core layer.

B.

The OSPF flooding domain boundary should be within the distribution layer.

C.

OSPF should generally be deployed in a three-layer domain hierarchy to align with the physical three-layer hierarchy.

D.

OSPF flooding domain boundaries should be placed with route aggregation in mind.

 

Correct Answer: D

 

 

QUESTION 134

Which two techniques are used in a network design to slow down the distribution of topology information caused by a rapidly flapping link? (Choose two.)

 

A.

Bidirectional Forwarding Detection

B.

IP event dampening

C.

link-state incremental SPF

D.

link-state partial SPF

E.

LSA throttling

F.

SPF throttling

 

Correct Answer: BE

QUESTION 135

Which three factors slow down network convergence? (Choose three.)

 

A.

constant interface flapping

B.

lack of redundant paths

C.

inconsistent topology states between routers

D.

transport network failing to generate LoS

E.

wrong summarization in ABRs

 

Correct Answer: ACD

 

 

QUESTION 136

Which two features can be used to extend VRFs across a campus? (Choose two.)

 

A.

802.1q trunks

B.

LDP

C.

MPLS TE

D.

GRE

E.

port channels

 

Correct Answer: AD

 

 

QUESTION 137

Your design client has requested that you ensure that the client devices are not dynamically configured with incorrect DNS information. When finalizing the network design, which security option must be configured on the switches?

 

A.

IGMP snooping

B.

DHCP snooping

C.

root guard

D.

DNS snooping

 

Correct Answer: B

 

 

QUESTION 138

Which design concern should be accounted for in all Layer 3 virtualization technologies?

 

A.

Layer 3 redundancy

B.

packet sizing

C.

application usage

D.

Layer 3 stability

 

Correct Answer: B

 

 

 

 

 

 

 

QUESTION 139

You are the lead network designer hired by Service Provider XYZ to deploy CoS functionality on the core MPLS network (P routers). The goal of the network design is to provide a complete CoS solution to all customers that purchase services such as dedicated Internet access, MPLS L3VPN, and L2VPN (pseudowire). Service Provider XYZ has these design requirements:

 

clip_image002The network supports four service queues with equal treatment for delay, jitter, and packet loss.

clip_image002[1]Queues are numbered 0-3, where 0 is the default queue.

clip_image002[2]Three queues have one treatment.

clip_image002[3]One queue has either one or two treatments.

 

If your design includes eight CoS queues on the Service Provider XYZ MPLS PE router ingress (CE facing) interface, how will customer traffic be classified as it enters the MLS P routers?

 

A.

The eight CoS queues in the MPLS P router are remapped to the eight CoS queues.

B.

Traffic is classified on the MPLS PE routers on core facing interface. The DSCP value is mapped into EXP field where multiple EXP settings (2+) will be assigned to a single queue throughout the MPLS P routers.

C.

Discard the traffic from the eight CoS queues that does not match the four CoS queues of the MPLS P routers.

D.

The 8 CoS queues in the MPLS P router are remapped to four 4 flow-label queues.

 

Correct Answer: B

 

 

QUESTION 140

What is a key benefit of a layered network design?

 

A.

cost savings

B.

increased security

C.

increased flexibility

D.

decreased broadcast

 

Correct Answer: C

 

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