The 640-911 DCICN Introducing Cisco Data Center Networking is one of the exams associated with the CCNA Datacenter Certification. This exam tests a candidate's knowledge of networking concepts for the Data Center environment, based on Nexus-OS. You will learn fundamental information on how a Data center network works, how to configure virtualization in the network, addressing schemes, troubleshooting and configuration skills. Candidates can prepare for this exam by taking the course DCICN, Introducing Cisco Data center Networking.
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NO.1 Which action will a router take if it does not know the destination MAC
address of a host?
A. Flood the packet out of every port.
B. Drop the
packet.
C. Send an ARP request.
D. Send a proxy ARP request.
E. Send an
ICMP unreachable message back to the source.
Answer: C
NO.2 Which two
features must be licensed on a Cisco Nexus 5548UP Switch? (Choose two.)
A.
Virtual Port Channel
B. Fibre Channel
C. FabricPath
D. iSCSI
Answer:
B,C
NO.3 Where does Cisco Nexus Operating System store the startup
configuration file?
A. RAM
B. flash
C. bootflash
D. volatile
E.
NVRAM
Answer: E
NO.4
Which transport protocol requires a three-way handshake to establish a new
connection?
A. ARP
B. UDP
C. IP
D. TCP
Answer:
D
NO.5
What action does a switch take if the destination MAC address is unknown?
A.
Discard frame
B. Send ICMP unreachable message to source
C. Flood packet
on all ports
D. Compare destination IP address against an ACL to determine if
it is permitted
E. Send gratuitous ARP on all ports and wait for reply before
forwarding
Answer: C
Explanation:
"What happens though when the switch
receives a frame with a destination MAC address that is not
included in the
table? In that case the switch will just broadcast/flood the frame with
theunknown
destination address to all of its ports (apart from the port where
the frame came from). This process
is called unknown unicast flooding. "
http://telconotes.wordpress.com/2013/03/09/how-a-switch-
works/
NO.6
What is the command sequence to force a Cisco Nexus 6000 switch to boot using
the golden
BIOS image?
A. Press Ctrl-Shift-6 within 30 seconds of when
power is supplied to the switch.
B. Press Ctrl-] within 2 seconds of when
power is supplied to the switch.
C. Press Ctrl-] within 30 seconds of when
power is supplied to the switch.
D. Press Ctrl-Shift-6 within 2 seconds of
when power is supplied to the switch.
Answer: D
NO.8 You are designing a network that provides FCoE,
FabricPath, OTV, and Layer 3 functionalities.
Which device can perform these
functionalities?
A. Cisco Nexus 5500 Series Switches
B. Cisco Nexus 7000
Series Switches
C. Cisco Catalyst 6500 Series Switches
D. Cisco ASR 1001
Router
Answer: B
address of a host?
A. Flood the packet out of every port.
B. Drop the
packet.
C. Send an ARP request.
D. Send a proxy ARP request.
E. Send an
ICMP unreachable message back to the source.
Answer: C
NO.2 Which two
features must be licensed on a Cisco Nexus 5548UP Switch? (Choose two.)
A.
Virtual Port Channel
B. Fibre Channel
C. FabricPath
D. iSCSI
Answer:
B,C
NO.3 Where does Cisco Nexus Operating System store the startup
configuration file?
A. RAM
B. flash
C. bootflash
D. volatile
E.
NVRAM
Answer: E
NO.4
Which transport protocol requires a three-way handshake to establish a new
connection?
A. ARP
B. UDP
C. IP
D. TCP
Answer:
D
NO.5
What action does a switch take if the destination MAC address is unknown?
A.
Discard frame
B. Send ICMP unreachable message to source
C. Flood packet
on all ports
D. Compare destination IP address against an ACL to determine if
it is permitted
E. Send gratuitous ARP on all ports and wait for reply before
forwarding
Answer: C
Explanation:
"What happens though when the switch
receives a frame with a destination MAC address that is not
included in the
table? In that case the switch will just broadcast/flood the frame with
theunknown
destination address to all of its ports (apart from the port where
the frame came from). This process
is called unknown unicast flooding. "
http://telconotes.wordpress.com/2013/03/09/how-a-switch-
works/
NO.6
What is the command sequence to force a Cisco Nexus 6000 switch to boot using
the golden
BIOS image?
A. Press Ctrl-Shift-6 within 30 seconds of when
power is supplied to the switch.
B. Press Ctrl-] within 2 seconds of when
power is supplied to the switch.
C. Press Ctrl-] within 30 seconds of when
power is supplied to the switch.
D. Press Ctrl-Shift-6 within 2 seconds of
when power is supplied to the switch.
Answer: D
NO.8 You are designing a network that provides FCoE,
FabricPath, OTV, and Layer 3 functionalities.
Which device can perform these
functionalities?
A. Cisco Nexus 5500 Series Switches
B. Cisco Nexus 7000
Series Switches
C. Cisco Catalyst 6500 Series Switches
D. Cisco ASR 1001
Router
Answer: B