[Free] Download Latest (March 2016) Cisco 642-998 Real Exam 11-20

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QUESTION 11

Which two devices should you recommend to implement at the ToR in your data center design for access layer connectivity? (Choose two.)

 

A.	Cisco Nexus 2000 Series
B.	Cisco Nexus 3000 Series
C.	Cisco Nexus 4000 Series
D.	Cisco Nexus 5500 Series
E.	Cisco Nexus 7000 Series

 

Correct Answer: AD

 

 

QUESTION 12

 

What prefix in the IPv6 address does the Interface ID begin?

 

A.	/32
B.	/48
C.	/64
D.	/96

 

Correct Answer: C

Explanation:

Basic IPv6 Address Format

 

 

Image: The figure shows the three parts of an IPv6 address, which are described in the next text.

The leftmost three fields (48 bits) contain the site prefix. The prefix describes the public topology that is usually allocated to your site by an ISP or Regional Internet Registry (RIR). The next field is the 16-bit subnet ID, which you (or another administrator) allocate for your site. The subnet ID describes the private topology, also known as the site topology, because it is internal to your site.

The rightmost four fields (64 bits) contain the interface ID, also referred to as a token. The interface ID is either automatically configured from the interface’s MAC address or manually configured in EUI-64 format.

Reference: http://docs.oracle.com/cd/E23823_01/html/816-4554/ipv6-overview-10.html

 

 

QUESTION 13

You have a vPC domain that contains a Cisco Nexus 5000 Series pair. Which feature must you enable to make the Cisco Nexus pair operates as a single STP root?

 

A.	auto-recovery
B.	priority
C.	peer-switch
D.	peer-gateway

 

Correct Answer: C

 

 

QUESTION 14

You have designed a Cisco UCS Solution, and each Cisco UCS 6248UP Fabric Interconnect has these connections:

 

4 x Cisco UCS Chassis each with 4 x 10 Gb links per Fabric

4 x 10 Gb Unified Port Channel to the upstream Nexus switch

 

How many additional Fabric Interconnect port licenses are required?

 

A.	16
B.	0
C.	20
D.	4
E.	40

 

Correct Answer: A

 

QUESTION 15

Which technology provides the least amount of input to the data center solution requirements?

 

A.	cloud compute
B.	storage
C.	desktop
D.	network

 

Correct Answer: A

 

 

QUESTION 16

Which two options are reasons to use IP routing to segment a data center instead of Layer 2 routing? (Choose two.)

 

A.	Spanning Tree Protocol
B.	simplify design
C.	broadcast flooding
D.	ease of routing protocol configuration
E.	cost

 

Correct Answer: AC

 

 

QUESTION 17

Which tw
o actions must be performed when you configure Cisco VN-Link in hardware? (Choose two.)

 

A.	Create a distributed virtual switch in Cisco UCS Manager.
B.	Add an ESX host to the distributed virtual switch in Cisco UCS Manager.
C.	Create a port profile and profile clients in Cisco UCS Manager.
D.	Create a standard switch on an ESXi host and map the network adapters to the switch.
E.	Create a distributed virtual switch under the datacenter folder in VMware vCenter.

 

Correct Answer: AC

 

 

QUESTION 18

Which three options are benefits of using a modular approach during the design of a data center? (Choose three.)

 

A.	improves data center design
B.	slower deployment
C.	increases efficiency and responsiveness
D.	reduced operations flexibility
E.	reducing overall capital expenditures
F.	increasing operating expenses
G.	low density and high power use effectiveness

 

Correct Answer: ACE

 

 

 

QUESTION 19

What represents the number of bits in an IPv6 address?

 

A.	32-bit dotted hex
B.	48-bit dotted hex
C.	64-bit dotted hex
D.	128-bit dotted hex
E.	160-bit dotted hex

 

Correct Answer: D

 

 

QUESTION 20

Which three options are important benefits of selecting a VXLAN network architecture? (Choose three.)

 

A.	quality of service
B.	multitenant VLAN isolation
C.	increased virtual machine mobility
D.	data center load balancing
E.	optimized traffic flow
F.	support for more than 4,096 VLANs
G.	no encapsulation overhead

 

Correct Answer: BCE

 

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