[Free] 2017(June) Ensurepass Testking Cisco 300-320 Actual Tests 61-70

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Designing Cisco Network Service Architectures (ARCH)

QUESTION 61

IP multicast packets when designing IPSec VPN?

 

A.

IPSec forwarding using tunnel mode

B.

Encapsulation of trafic with GRE or VTI

C.

Additional bandwidth for headend

D.

IPSec forwarding using transport mode

 

Correct Answer: B

 

 

QUESTION 62

Which option is an advanced WAN services design consideration for a multipoint architecture that connects two or more customer devices using Ethernet bridging techniques over an MPLS network?

 

A.

VPLS

B.

Metro Ethernet

C.

MPLS

D.

SONET/SDH

 

Correct Answer: A

 

 

QUESTION 63

Voice and video-conferencing applications that support multistreaming use which protocol?

 

A.

TCP

B.

RTP

C.

Multipath TCP

D.

SCTP

 

Correct Answer: D

Explanation:

SCTP: Stream Control Transmission Protocol

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp/configuration/12-4/iap-12-4-book/iap-sctp.html

 

 

QUESTION 64

Which two features provide resiliency in a data center? (Choose two.)

 

A.

Cisco FabricPath

B.

VTP

C.

encryption

D.

vPC

E.

VRF

 

Correct Answer: AD

 

 

QUESTION 65

An engineer chose to design an architecture where distribution switches are in VSS and are connected to access switches using Multichassis Etherchannel. What is the resulting topology?

 

A.

Looped

B.

Ring

C.

Hybrid

D.

Star

 

Correct Answer: D

 

 

QUESTION 66

Which two practices will avoid Cisco Express Forwarding polarization? (Choose two.)

 

clip_image001

 

A.

The core layer should use default Layer 3 hash information.

B.

The core layer should use default Layer 4 hash information.

C.

The distribution layer should use default Layer 3 hash information.

D.

The distribution layer should use default Layer 4 hash information.

E.

The core layer should use Layer 3 and Layer 4 information as input to the Cisco Expressing Forwarding hashing algorithm.

F.

The distribution layer should use Layer 3 and Layer 4 information as input into the Cisco Expressing Forwarding hashing algorithm.

 

Correct Answer: AF

QUESTION 67

When designing a layer 2 STP-based LAN with Layer 3 FHRP, which design recommendation should be followed?

 

A.

Avoid modifying default STP and FHRP timers.

B.

Assign the native VLAN to the lowest number in use.

C.

Avoid configuring router preemption.

D.

Align the STP root with the active FHRP device.

 

Correct Answer: C

 

 

QUESTION 68

Which statement best describes Cisco OTV internal interfaces?

 

A.

They are Layer 2 interfaces that are configured as either access or trunk interfaces on the switch.

B.

They are interfaces that perform Layer 3 forwarding with aggregation switches.

C.

They are the interfaces that connect to the ISP.

D.

They are tunnel interfaces that are configured with GRE encapsulation.

 

Correct Answer: A

Explanation:

https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Data_Center/DCI/whitepaper/DCI3_OTV_Intro/DCI_1.html

 

“Internal Interfaces To perform OTV functionality, the edge device must receive the Layer 2 traffic for all VLANs that need to be extended to remote locations. The Layer 2 interfaces, where the Layer 2 traffic is usually received, are named internal interfaces”

 

 

QUESTION 69

Which L2 messaging protocol maintains VLAN configuration consistency?

 

A.

VTP

B.

STP

C.

LACP

D.

CDP

 

Correct Answer: A

 

 

QUESTION 70

An Engineer is designing a Cisco Application Centric Infrastructure network … What is the expected number of links between Spine switches?

 

A.

0

B.

1

C.

2

D.

4

 

Correct Answer: A

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