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A network engineer receives reports about poor voice quality issues at a remote site. The network engineer does a packet capture and sees out-of-order packets being delivered. Which option can cause the VOIP quality to suffer?
A. traffic over backup redundant links
B. misconfigured voice vlan
C. speed duplex link issues
D. load balancing over redundant links
Correct Answer: D
An engineer is configuring a new MDS switch. The switch is powered on, the customer connects to the console, and the initial setup script is started.
Which two items can be configured during this setup process?
A. default port-channel mode
B. default port VSAN membership
C. default switch port interface state
D. default zone mode
E. default storage VDC
Correct Answer: CD
A network administrator creates a static route that points directly to a multi-access interface, instead of the next-hop IP address. The administrator notices that Cisco Express Forwarding ARP requests are being sent to all destinations. Which issue might this configuration create?
A. Low bandwidth usage
B. High memory usage
C. Cisco Express Forwarding routing loop
D. High bandwidth usage
E. IP route interference
Correct Answer: C
Which two actions must you perform to enable and use window scaling on a router? 400-151 dumps (Choose two.)
A. Execute the command ip tcp window-size 65536.
B. Set window scaling to be used on the remote host.
C. Execute the command ip tcp queuemax.
D. Set TCP options to “enabled” on the remote host.
E. Execute the command ip tcp adjust-mss.
Correct Answer: AB
Which two port types are needed to build out an FCoE pass-through switch in NPV mode while maintaining Fiber Channel packet visibility? (Choose two.)
A. VN Port
B. VE Port
C. VF Port
D. Edge Port
E. N Port
Correct Answer: BD
Which traffic characteristic is the reason that UDP traffic that carries voice and video is assigned to the queue only on a link that is at least 768 kbps?
A. typically is not fragmented
B. typically is fragmented
C. causes windowing
D. causes excessive delays for video traffic
Correct Answer: A
Which three TCP enhancements can be used with TCP selective acknowledgments? (Choose three.) 400-151 pdf
A. header compression
B. explicit congestion notification
D. time stamps
E. TCP path discovery
F. MTU window
Correct Answer: BCD
Which three are characteristics of IPv6? (Choose three.)
A. An IPv6 address is 128 bits long.
B. An IPv6 header is 20 bits long.
C. An IPv6 header contains the next header field.
D. An IPv6 header contains the protocol field.
E. IPv6 routers send RA messages.
F. An IPv6 header contains the header checksum field.
Correct Answer: ACE
What is the maximum working distance of a 1000BASE-ZE SFP transceiver when ordinary single mode fiber? 400-151 dumps
A. up to 70 kilometers
B. up to 40 kilometers
C. up to 550 meters
D. up to 10 kilometers
Correct Answer: D
Which option describes what a switch does after it items that a host has connected to a switch port?
A. Flood the frame only on all of its trunk ports.
B. Create a MAC to port mapping entry in MAC table.
C. Flood the frame only on all of its access ports.
D. Discard the frame.
Correct Answer: C
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