A ctual 4 T est · Exam : 640-911 Title : Introducing Cisco Data Center Networking Vendor : Cisco Version : DEMO IT Certification Guaranteed, The Easy Way! 1 Instant Download - Best

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Exam : 640-911

Title : Introducing Cisco Data CenterNetworking

Vendor : Cisco

Version : DEMO

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NO.1 Which network topology is most closely associated with classical CSMA/CD?A. busB. token passing busC. starD. extended starE. ringAnswer: AExplanation:"For the bus topology, the "classical" access methods are the CSMA/CD.."http://books.google.com/books?id=tmJzufisExQC&pg=PA39&lpg=PA39&dq=classic+CSMA/CD+bus+topology&source=bl&ots=b1L_uaAcVR&sig=Tx8zfIavph8RFr9N5n5EDv2WZZo&hl=ru&sa=X&ei=jnDmUsTTD4no4gSd_oGwCw&ved=0CCwQ6AEwAQ#v=onepage&q=classic%20CSMA%2FCD%20bus%20topology&f=false

NO.2 A network engineer is tasked with installing a new switch into the network access layer.The switch needs to see VTP data, but does not need to participate in the VTP domain.What VTP mode should the switch be configured for?A. clientB. transparentC. serverD. offE. activeAnswer: B

NO.3 What are two advantages of employing an external router for inter-VLAN routing over an IEEE802.1Q trunk link? (Choose two.)A. Layer 3 functionality is not required on the switch.B. The router facilitates communication between VLANs.C. The single traffic path is optimized.D. Latency is reduced as packets leave the switch.E. Equal-Cost Multipath is supported.Answer: A,B

NO.4 VLAN 10 is assigned IP address 10.1.1.1 with subnet mask 255.255.255.0. Which configuration isused to route the IP subnet but not form OSPF neighbors on a Cisco Nexus 7000 switch?A)

B)


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C)

D)

A. Option AB. Option BC. Option CD. Option DAnswer: A

NO.5 What are three reasons that switches supersede bridges? (Choose three.)A. Smaller frame buffers decrease latency.B. Forward, filter, or flood frames.C. Multiple simultaneous communications between ports.D. Larger inspection engine allows for higher throughput.E. Switches have many ports.Answer: B,C,EExplanation:http://docwiki.cisco.com/wiki/Bridging_and_Switching_Basics

NO.6 Which two network topologies are the most popular in switching? (Choose two.)


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A. BusB. Token passing busC. StarD. Extended starE. RingAnswer: C,DExplanation:http://en.wikipedia.org/wiki/Network_topology

NO.7 In which layer of the OSI model are TCP port numbers defined?A. 2B. 3C. 4D. 6E. 7Answer: C

NO.8 On most keyboards, the Up arrow and Down arrow keys move through the command history.Which two key sequences can be used as alternatives? (Choose two.)A. Alt-AB. Alt-FC. Alt-ND. Alt-EE. Alt-PAnswer: C,EExplanation:"Alt-P History search backwards Alt-N History search forwards"http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli_rel_4_0_1a/begin.html

NO.9 What is the result when two data transmissions are sent at the same time?A. A collision occurs and both devices stop transmission and back off.B. A collision occurs and one device retransmits.C. All traffic continues to transmit.D. A collision occurs and both devices resend transmissions.Answer: A

NO.10 Refer to the exhibit. Which command allows the Cisco Nexus 5000 switch to continue to startup?A. switch(boot)# load n5000-uk9.5.2.1.N1.4.binB. switch(boot)# configure terminalswitch(boot-config)# admin-password Cisco123C. switch(boot)# load n5000-uk9-kickstart.5.2.1.N1.4.binD. switch(boot)# load system-latestAnswer: A

NO.11 What is the Cisco Nexus Operating System command to define a port as a Layer 3 port?A. Port routed


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B. No switchportC. l3 switchportD. Port switching offAnswer: BExplanation:"If you want to configure a Layer 3 interface for Layer 2, enter the switchport command. Then, if youchange a Layer 2 interface to a routed interface, enter the no switchport command. "http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/command/reference/layer2/n5kl2_cmds_n.pdf

NO.12 What are two attributes of a VLAN? (Choose two.)A. A VLAN defines a collision domain.B. A VLAN defines a broadcast domain.C. Broadcasts are flooded to all VLANs.D. Collisions are flooded to all VLANs.E. A Layer 3 device is required to route packets between VLANs.F. A Layer 2 device is required to route packets between VLANs.Answer: B,EExplanation:"In computer networking, a single layer-2 network may be partitioned to create multiple distinctbroadcast domains, which are mutually isolated so that packets can only pass between them via oneor more routers; such a domain is referred to as a virtual local area network, virtual LAN or VLAN." "Arouter (Layer 3 device) serves as the backbone for network traffic going across different VLANs."http://en.wikipedia.org/wiki/Virtual_LAN

NO.13 Which two features must be licensed on a Cisco Nexus 5548UP Switch? (Choose two.)A. Virtual Port ChannelB. Fibre ChannelC. FabricPathD. iSCSIAnswer: B,C

NO.14 Which device forwards data based on the destination IP address?A. repeaterB. bridgeC. switchD. routerE. hubAnswer: D

NO.15 Which two options are multicast addresses? (Choose two.)A. 239.1.1.255B. FF05::2C. 127.0.0.1D. 192.168.2.2E. FF05:0001:0:0:0:0:0:BAC0F. FD00::2


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Answer: A,B

NO.16 A network engineer is verifying Layer 2 connectivity of a server to a Cisco Nexus switch bychecking Address Resolution Protocol table statistics. Which command shows the MAC address,physical interface, VLAN, and IP address of a server on a Cisco Nexus switch?A. show ip arp detailB. show ip arpC. show ip arp interfaceD. show arp detailAnswer: A


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A ctual 4 T est · Exam : 640-911 Title : Introducing Cisco Data Center Networking Vendor : Cisco Version : DEMO IT Certification Guaranteed, The Easy Way! 1 Instant Download - Best