Ensurepass

QUESTION 21

Refer to the exhibit. A service provider would like to use Ethernet OAM to detect end-to-end connectivity failures between SP-SW1 and SP-SW2. In which two of these ways can you design this solution? (Choose two.)

 

clip_image002

 

A.

Enable Y.1731 Connectivity Fault Management on the SP switches.

B.

E-LMI PDUs must be forwarded over VPLS.

C.

Cisco Discovery Protocol PDUs must be forwarded over the VPLS.

D.

Use upward maintenance endpoints on the SP switches.

E.

Enable IEEE 802.1ag Connectivity Fault Management on the SP switches.

 

Correct Answer: DE

 

 

 

 

 

 

 

QUESTION 22

A company wants to connect two data center sites using a hub-and-spoke design with 2000 remote sites. One design consideration is the requirement to transfer MPLS packets over the public Internet. In addition, one router at each site should be used, and the MPLS packets must be encapsulated inside IP packets because the public Internet cannot transfer native MPLS packets. Which feature can be used to simplify the network design?

 

A.

GET VPN can be used to encrypt the MPLS packets with IPsec.

B.

DMVPN can be used to build up GRE tunnels dynamically with MPLS encapsulation inside.

C.

L2TPv3 can be used to encapsulate the MPLS packets.

D.

Site-to-site IPsec without GRE can be used to encapsulate the MPLS packets.

E.

PPPoE can be used to encapsulate the MPLS packets.

 

Correct Answer: B

 

 

QUESTION 23

You have created a network design that has two point-to-point Metro Ethernet circuits extending a single production VLAN between two data centers. Under normal circumstances, one circuit will carry traffic and spanning tree will block the other. If the company wants you to make use of both circuits to carry production traffic, which two technologies and features will you investigate to integrate into your network design? (Choose two.)

 

A.

EtherChannel

B.

MST

C.

Multichassis EtherChannel

D.

PVST+

 

Correct Answer: AC

 

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QUESTION 24

Your network operations team is deploying Access Control Lists (ACLs) across your Internet gateways. They wish to place an ACL inbound on the Internet gateway interface facing the core network (the “trusted” interface). Which one of these addresses would the ACL need for traffic sourced from the inside interface, to match the source address of the traffic?

 

A.

inside local

B.

outside local

C.

inside global

D.

outside global

 

Correct Answer: A

 

 

QUESTION 25

You have been hired to redesign a network due to issues with congestion. How will a router function if the QoS mechanism of congestion avoidance is integrated into the existing network design?

 

A.

the router handles the overflow of traffic by using FIFO

B.

the router handles the possible buildup of congestion by using WRED

C.

the router forces inbound and outbound traffic to stay within a defined profile by using rate limiting

D.

the router separates packets based on certain characteristics by using NBAR

E.

the router marks packets based on certain characteristics by using PBR

 

Correct Answer: B

 

 

QUESTION 26

You have been tasked to create a Layer 2 network design that uses vPC to provide resiliency and avoid loops. vPC removes Layer 2 loops while providing redundancy through which mechanism?

 

A.

dual-active detection

B.

address synchronization

C.

strict forwarding rules

D.

Bridge Assurance

 

Correct Answer: C

 

 

QUESTION 27

You are identifying performance management requirements for a VoIP migration. What three key performance indicators would you use to track media quality? (Choose three.)

 

A.

delay

B.

trunk group usage

C.

jitter

D.

packet loss

E.

call processing (call detail records)

F.

call processing (performance counters)

G.

echo

H.

crosstalk

 

Correct Answer: ACD

 

 

QUESTION 28

Service provider XYZ plans to provide dedicated Internet access and MPLS L3VPN services to business customers. XYZ has these design specifications:

 

clip_image004MP-BGP running on the core MPLS P routers with external Internet routes.

clip_image004[1]The core network will include 16 Point of Presence IP POPs throughout the Asia- Pacific region.

clip_image004[2]An additional nine non-P routers will use EBGP peering with multiple providers for Internet traffic.

clip_image004[3]An additional 50 PE routers will provide end customers with dedicated Internet access and L3VPN services throughout the Asia-Pacific region.

 

In what two ways can the MP-BGP be removed from the MPLS P core routers and still provide dedicated Internet access and MPLS L3VPN services? (Choose two.)

 

A.

Disable BGP from the MPLS core P routers and have the MPLS core P routers run OSPF and LDP.

B.

Enable separate BGP control plane routers using a route reflector server concept that will be fully meshed with peer route reflector servers and have clients as MPLS PE routers and EBGP peering routers.

C.

Enable all EBGP routers as route reflector servers and MPLS PE routers as their clients.

D.

It is not possible to disable BGP from the MPLS core P routers without impacting the dedicated Internet access and MPLS L3VPN services.

 

Correct Answer: BC

 

 

QUESTION 29

ACME Corporation is integrating IPv6 into their network, which relies heavily on multicast distribution of data. Which two IPv6 integration technologies support IPv6 multicast? (Choose two.)

 

A.

6VPE

B.

6PE

C.

dual stack

D.

ISATAP

E.

6to4

F.

IPv6INIP

 

Correct Answer: CF

 

 

QUESTION 30

Refer to the exhibit. You are designing a loop-free hierarchical VPLS service. Which two design considerations should be implemented for the pseudowires between the N-PE and U-PE routers? (Choose two.)

 

clip_image006

 

A.

Disable split horizon toward the N-PE routers.

B.

Disable split horizon toward the U-PE router.

C.

Enable split horizon toward the U-PE router.

D.

Enable split horizon toward the N-PE routers.

E.

Disable MAC learning on the U-PE route.

F.

Disable MAC learning on the N-PE routers.

 

Correct Answer: BD

 

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