Online Access Free 642-874 Exam Questions

Which of the following facts must be considered when designing for IP telephony within an Enterprise Campus network?

• A.Though multi-VLAN access ports are set to dot1q and carry more than two VLANs they are not trunk ports.
• B.IP phones have no voice and data VLAN separation, so security policies must be based on upper layer traffic characteristics.
• C.Because the IP phone is a three-port switch, IP telephony extends the network edge, impacting the Distribution layer.
• D.Video and voice are alike in being bursty and bandwidth intensive, and thus impose requirements to be lossless, and have minimized delay and jitter.

DRAG DROP

Correct Answer:

Explanation:
Enable specifically at the network edge >STP Manually prune unused VLANs >Trunks Use specifically on fiber-optic interconnections that link switches >UDLD Ensure that an individual link failure will not result in an STP failure >Etherchannel Always use a number of links that is a power of 2 (2, 4, 8) to optimize the load balancing of traffic> VSS

Which four options are network virtualization technologies that are employed in the data center?
(Choose four.)

• A.VRP
• B.VPC
• C.VLC
• D.VLAN
• E.VRF
• F.VSAN

A campus network in a switch block design requires redundant distribution switches, load sharing across uplinks, a loop-free topology, and only one gateway IP address per VLAN. Which switching technology meets all of the requirements?

• A.Spanning Tree Protocol
• B.EtherChannel
• C.HSRP
• D.VSS

An engineer is designing a new data center network so that the topology maintains fewer uplinks to the aggregation layer to reduce STP processing requirements. What data center topology meets the RFP requirements?

• A.top of rack
• B.star
• C.mesh
• D.end of row