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Exam Code: 400-101
Exam Name: CCIE Routing and Switching Written Exam v5.0
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400-101 Exam Dumps Total Q&A: 650 Questions and Answers

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Exam Code: 350-080
Exam Name: CCIE Data Center Written Exam
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350-080 Exam Dumps Total Q&A: 375 Questions and Answers

350-080 Exam Cram Detail : 350-080 Exam Dumps

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NO.1 Which three options are sources from which a SPAN session can copy traffic? (Choose three.)
A. ports
B. EtherChannels
C. VLANs
D. subnets
E. primary IP addresses
F. secondary IP addresses
Answer: A,B,C

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Explanation:
The interfaces from which traffic can be monitored are called SPAN sources. Sources designate the
traffic to monitor and whether to copy ingress, egress, or both directions of traffic. SPAN sources
include the following:
Ethernet ports
Port channels
The inband interface to the control plane CPU-You can monitor the inband interface only from the
default VDC. Inband traffic from all VDCs is monitored.
VLANs-When a VLAN is specified as a SPAN source, all supported interfaces in the VLAN are
SPAN sources.
Remote SPAN (RSPAN) VLANs
Fabric port channels connected to the Cisco Nexus 2000 Series Fabric Extender
Satellite ports and host interface port channels on the Cisco Nexus 2000 Series Fabric

NO.2 Which two actions can you take to allow the greatest number of pertinent packets to be
stored in the temporary buffer of Cisco IOS Embedded Packet Capture? (Choose two.)
A. Specify the sampling interval.
B. Specify the capture buffer type.
C. Specify a reflexive ACL.
D. Specify the minimum packet capture rate.
E. Specify the packet size.
F. Store the capture simultaneously onto an external memory card as the capture occurs.
Answer: A,B

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Explanation:
Embedded Packet Capture (EPC) provides an embedded systems management facility that helps in
tracing and troubleshooting packets. This feature allows network administrators to capture data
packets flowing through, to, and from a Cisco device. The network administrator may define the
capture buffer size and type (circular, or linear) and the maximum number of bytes of each packet to
capture. The packet capture rate can be throttled using further administrative controls. For example,
options allow for filtering the packets to be captured using an Access Control List and, optionally,
further defined by specifying a maximum packet capture rate or by specifying a sampling interval.
Reference. http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/epc/configuration/xe-
3s/asr1000/epcxe-3s-asr1000-book/nm-packet-capture-xe.html

NO.3 Which statement describes the native VLAN concept in an ISL trunk?
A. It is the VLAN ID that is assigned to untagged packets.
B. It is the VLAN with highest priority.
C. It is the default VLAN for a trunk.
D. There is no native VLAN concept in an ISL trunk.
Answer: D

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Explanation:
ISL has no native VLAN concept because it places the entire ethernet frame in the payload of an ISL
frame. Native VLANs is an 802.1Q specific concept

NO.4 Which congestion-avoidance or congestion-management technique can cause global
synchronization?
A. Tail drop
B. Random early detection
C. Weighted random early detection
D. Weighted fair queuing
Answer: A

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Explanation:
Tail Drop Tail drop treats all traffic equally and does not differentiate between classes of service.
Queues fill during periods of congestion. When the output queue is full and tail drop is in effect,
packets are dropped until the congestion is eliminated and the queue is no longer full. Weighted
Random Early Detection WRED avoids the globalization problems that occur when tail drop is used as
the congestion avoidance mechanism on the router. Global synchronization occurs as waves of
congestion crest only to be followed by troughs during which the transmission link is not fully utilized.
Global synchronization of TCP hosts, for example, can occur because packets are dropped all at once.
Global synchronization manifests when multiple TCP hosts reduce their transmission rates in
response to packet dropping, then increase their transmission rates once again when the congestion
is reduced. Reference.
http://www.cisco.com/c/en/us/td/docs/ios/12_2/qos/configuration/guide/fqos_c/qcfconav.html#w
p1 002048

NO.5 Which flag in a configuration BPDU instructs all switches to shorten their bridge table aging
process from the default 300 seconds to the current forward delay value?
A. topology change bit
B. topology change acknowledgment bit
C. priority bit
D. max-age bit
Answer: A

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Explanation:
The Root Bridge continues to set the Topology Change flag (TCN bit) in all Configuration BPDUs that it
sends out for a total of Forward Delay + Max Age seconds (default = 35 (20+15) seconds). This flag
instructs all bridges to shorten their MAC address table (Bridge table) aging process from the default
value of 300 seconds to the current Forward Delay value of the bridge (default=15 seconds). The TCA
flag is set by the upstream bridge to tell the downstream bridges to stop sending TCN BPDUs. The TC
flag is set in configuration BPDU by the Root Bridge to shorten the bridge table age-out period from
default 300 seconds to Forward Delay seconds.

NO.6 Refer to the exhibit.
Which two statements about the implementation are true? (Choose two.)
A. The PPP multilink protocol header is omitted on delay-sensitive packets.
B. The maximum number of fragments is 1.
C. Small real-time packets are multilink-encapsulated.
D. A transmit queue is provided for smaller packets.
Answer: A,D

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