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Cisco Network Programmability Design and Implementation Specialist 300-550 Dumps Exam Questions And Answers (1-20)
What IE is not mandatory in a Q.931 Service msg?
The purpose of Administrative Distance, as used by Cisco routers, is:
A.To choose between routes from different routing protocols when receiving updates for the same network
B.To identify which routing protocol forwarded the update
C.To define the distance to the destination used in deciding the best path
D.To be used only for administrative purposes
What is the maximum PMD value of a 100km fiber segment if the cable is specified with 0.5ps/km ? (worst case)?
What is the equivalent of 50 GHz spacing in DWDM in terms of nm?
A router is set to boot from flash, but cannot find boot commands in the configuration. Also, valid files do not exist in the default flash device. The router will:
A. Boot from ROM, since there are no valid sources
B. Try to boot from the network, using a default filename
C. Terminate the boot process with an error message
D. Try to boot from the network, then boot from ROM as a backup
Correct Answer: D
If a host sends a TCP segment with the RST flag set, it means:
A.The receiver should send all data in the reassembly buffer to the application receiving it immediately.
B.The receiver should reset the session.
C.Any routers between the source and destination hosts should reset the state of the connection in their buffers.
D.The receiver should make certain its send buffer is pushed onto the wire.
How many E1 channels can STM-1 frame transport?
BGP can implement a policy of ‘Route Dampening’ to control route instability. 300-550 dumps What statement about route dampening is NOT correct?
A.A numeric penalty is applied to a route each time it flaps.
B.The penalty is exponentially decayed according to parameters, such as half-life-time.
C.The history of unstable routes is forwarded back to the sender to control future updates.
D.The route is eventually suppressed based on a configurable ‘suppress limit’.
MPLS traffic engineering data is carried by:
A.Opaque LSAs or IS-IS TLVs
C.RTP or RTCP packets
A network administrator is using debug commands to check the performance of a network. What steps can the administrator take to ensure that the “debug” will not require too much CPU, or at least that she will not have to reboot the router to disable debug? (multiple answer)
A. Make the debug command as specific as possible
B. Use the max-time parameter of the debug command
C. In configuration mode, enter scheduler interval 15
D. Configure a loopback to channel debug traffic
Correct Answer: AC
How many E-1s can be aggregated (maximum) and mapped into a VC-12 Signal?
What is Fast EtherChannel?
A.A feature to bundle multiple Ethernet point-to-point links quickly into one logical high speed link
B.A feature to bundle multiple Fast-Ethernet point-to-point links into one logical high speed link
C.Another name for full-duplex Fast Ethernet
D.Another name for Gigabit Ethernet
E.None of the above
If there are two different headends with two different frequencies available sharing the same plant, what frequency will the two groups of cable modems, which are brand new, and have never been on-line, lock on?
A. They will lock on the frequency configured on the linecard.
B. They will lock on the frequency configured on the upconverter.
C. They will lock on the first frequency they find.
D. They will lock on the lowest frequency.
E. They will lock on the last frequency remembered in ram.
Correct Answer: C
Which are HFC cable television forward path networks aligned to provide? (multiple answer)
A. For asymmetrical gain since the downstream and upstream bandwidths are also asymmetrical
B. For unity gain with a fixed input level and varying output levels adjusted by the selection of a fixed value attenuator and equalizer at the output stage in each of the forward amplifiers in the network
C. For unity gain with a fixed output level and varying input levels adjusted by the selection of a fixed value attenuator & equalizer at the input stage of each of the forward amplifiers in the network
D. It is not necessary to align the forward path amplifiers since the CMTS will automatically compensate for forward path gain discrepancies.
E. For unity gain and are level compensated by automatic gain and slope control systems utilizing RF pilot reference carriers
Correct Answer: CE
HFC cable television return path networks are aligned to provide: (multiple answer)
A. Asymmetrical gain since the downstream and upstream bandwidths are also asymmetrical
B. Unity gain with a fixed input level and varying output levels adjusted by the selection of a fixed value attenuator and equalizer at the output stage in each of the return amplifiers in the network
C. Unity gain with a fixed output level and varying input levels adjusted by the selection of a fixed value attenuator and equalizer at the input stage of each of the return amplifiers in the network
D. Cable modems the ability to power range comfortably within their output power dynamic range
E. It is not necessary to align the return path amplifiers since the CMTS will automatically adjust the cable modem transmit power levels.
Correct Answer: BD
Given a PAL HFC and 8 MHz channel lineup in the downstream, is it possible to utilize 6 MHz DOCSIS cable modems and signals on the network?
A. No, only 8 MHz channel spacing is available for Downstream data signals
B. Yes, as long as the 6 MHz DOCSIS signal is within a valid 8 MHz channel
C. Yes, as long as the DOCSIS signal is upconverted through a PAL upconverter
D. No, DOCSIS cannot be mixed with EuroDOCSIS in the Donwstream
E. DOCSIS must be used only in an EIA-542 channel plans
Correct Answer: B
Which three events might you diagnose as the cause of a line switching event?
A.Loss of signal and frame
B.Line AIS (all ones in STS pointer)
D.Excessive signaling messages
E.Excessive bit errors in overhead
F.Switched photon elements
Correct Answer:A B E
While entering commands on a console, the break key is pressed accidentally and the router reboots. 300-550 dumps What action could disable this problem?
A.In configuration mode, enter disable break.
B.In configuration mode, enter no service break.
C.Change the configuration register.
D.Replace the router – this is an invalid response to pressing the break key when past 60 seconds after boot.
What is NOT an ATM class of service?
What describes a technique, used to encapsulate voice (NOT data) over ATM?
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