640-911 Exam

Introducing Cisco Data Center Networking - (DCICN)

  • Exam Number/Code : 640-911
  • Exam Name : Introducing Cisco Data Center Networking - (DCICN)
  • Questions and Answers : 209 Q&As
  • Update Time: 2017-06-20
  • Price: $ 99.00 $ 39.00

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Exam Description or Exam Demo

Exam Code : 640-911

Exam Name : Introducing Cisco Data Center Networking - (DCICN)

Version : Demo

How many bits are in an IPv4 address? 

A. 32 

B. 24 

C. 8 

D. 4 

Answer: A 

Question No : 2 


Which two options are groups of network protocols that are categorized into the following OSI layers: application, data link, network, and transport? (Choose two.) 




D. Telnet, ICMP, EIGRP, FTP 



Answer: B,C 

Question No : 3 


A customer wants to connect to their SAN via Fibre Channel. Which two devices can be used to provide connectivity? (Choose two.) 

A. Cisco MDS 9148 Multilayer Fabric Switch 

B. Cisco Nexus 7010 Switch 

C. Cisco Nexus 5548UP Switch 

D. Cisco Catalyst 6509 Switch 

E. Cisco Nexus 2248TP GE Fabric Extender 


Answer: A,C 

Question No : 4 


Which device forwards data based on the destination IP address? 

A. repeater 

B. bridge 

C. switch 

D. router 

E. hub 


Answer: D 

Question No : 5 


Which three options describe routers compared to switches? (Choose three.) 

A. use IP address tables for information lookup 

B. concerned with packet forwarding 

C. operate at Layer 3 of the OSI model 

D. operate at Layer 2 of the OSI model 

E. use MAC address tables for information lookup 

F. concerned with the local delivery of frames 


Answer: A,B,C 

Question No : 6 


Which command should you use to configure a Cisco Nexus switch port for Layer 2 operation? 

A. nexus(config-if)#switchport 

B. nexus(config-if)#layer-2 

C. nexus(config-if)#routed 

D. nexus(config)#interface vlan 10nexus(config-if)#switchport 

Answer: A 



"If you want to configure a Layer 3 interface for Layer 2, enter the switchport command. Then, if you change a Layer 2 interface to a routed interface, enter the no switchport command." 




Question No : 7 


Which protocol operates at Layer 3 of OSI model and is used for host addressing? 






C. IP 



Answer: C 

Question No : 8 


Which two networking devices forward data based on destination MAC address? (Choose two.) 

A. Repeater 

B. Bridge 

C. Switch 

D. Router 

E. Hub 

Answer: B,C 





A. 15 seconds 

B. 30 seconds 

C. 45 seconds 

D. 60 seconds 

E. 90 seconds 

F. RIPv1 only sends routing updates when the topology changes. 

Answer: B 



"Originally, each RIP router transmitted full updates every 30 seconds." http://en.wikipedia.org/wiki/Routing_Information_Protocol 

Question No : 10 



Refer to the exhibit. When PC-A communicates with the Server what will the source MAC address be in the received frames at PC-A? 

A. MAC address of router interface Eth1 

B. MAC address of router interface Eth2 

C. MAC address of the NIC in the Server 

D. MAC address of switch interface E1/9 


Answer: A 

Question No : 11 


What is the maximum distance that is supported by Cisco passive Twinax cables? 

A. 3 m 

B. 4 m 

C. 5 m 

D. 10 m 


Answer: C 

Question No : 12 


What is the dotted hexadecimal representation of the IP address 

A. AC.0D.63.E1 

B. AB.63.99.D5 

C. E2.1D.E1.66 

D. BC.0C.C3.1F 

E. CC.0D.F3.21 



Answer: A 

Question No : 13 


Which two VTP modes allow the creation of local VLANs? (Choose two.) 


A. transparent 

B. native 

C. server 

D. client 


E. on 

Answer: A,C 

Question No : 14 


Which network topology is most closely associated with classical CSMA/CD? 

A. bus 

B. token passing bus 

C. star 

D. extended star 

E. ring 

Answer: A 



"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+CSM A/CD+bus+topology&source=bl&ots=b1L_uaAcVR&sig=Tx8zfIavph8RFr9N5n5EDv2WZZo &hl=ru&sa=X&ei=jnDmUsTTD4no4gSd_oGwCw&ved=0CCwQ6AEwAQ#v=onepage&q=cl assic%20CSMA%2FCD%20bus%20topology&f=false 


Question No : 15 


What is the maximum number of fabric modules that can be installed in a Cisco Nexus 7000 chassis? 



A. 4 

B. 5 

C. 6 

D. 7 

Answer: B 


Question No : 16 HOTSPOT 










99, 750-759, 990, 1006-1010 

Use the “show spanning tree” command to see which switch is the root for each VLAN. 



Question No : 17 


Which two layers of the OSI model relate to the transmission of bits over the wire and packet forwarding based on destination IP address? (Choose two.) 



A. 1 

B. 2 

C. 3 

D. 4 

E. 5 

Answer: A,C 


Bits - 1 layer Packets - 3 layer http://en.wikipedia.org/wiki/OSI_model 


Question No : 18 


Which option is the proper shortened representation of the IPv6 address FDFA:0000:0000:2314:00BA:AF34:0:0121? 

A. FDFA::2314:BA:AF34:0:121 

B. FDFA::2314::BA:AF34:0:0121 

C. FDFA::2314:BA:AF34:121 

D. FDFA::2314:BA:AF34::121 



Answer: A 

Question No : 19 


Unlike IPv6, which feature is available only in IPv4? 

A. broadcast 

B. anycast 

C. multicast 

D. unicast 


Answer: A 

Question No : 20 


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. client 

B. transparent 

C. server 

D. off 

E. active 


Answer: B 

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