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单选题
Which certification-based protocol is implemented for wireless QoS between an AP and a wireless client over RF media？（）
A
WMM using DCF
B
WMM using EDCAF
C
802.1e using DCF
D
802.1e using EDCAF
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Which three statements are correct about the differences in IS － IS and OSPF?()
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Under which two circumstances should Spanning Tree Protocol be implemented?()
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Which certification-based protocol is implemented for wireless QoS between an AP and a wireless client over RF media？（）A、WMM using DCFB、WMM using EDCAFC、802.1e using DCFD、802.1e using EDCAF
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考题
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单选题A user on a network cannot access any network resources. The link light on the computer showsthat a connection is present. Which of the following is the MOST likely cause of the problem?（）A
The wrong cable type has been used.B
. IDS has shut down the computer's switch port.C
The port on the switch is configured incorrectlyD
Spanning tree protocol was implemented.
考题
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EAP-TLSB
EAP-MD5C
PAPD
EAP-MSCHAPv2
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多选题Under which two circumstances should Spanning Tree Protocol be implemented？ （）Ato ensure a loop-free topologyBto protect against user-side loopsCwhen a VLAN spans access layer switchesDfor the most deterministic and highly available network topologyEbecause of the risk of lost connectivity without Spanning Tree Protocol
考题
单选题Which of the following is true regarding Label Distribution Protocol （LDP）？（）A
It is a label distribution protocol for MPLSB
It is a set of procedures and messages by which LSRs establish Label Switch Paths （LSPs） through a networkC
Tag distribution Protocol （TDP） was the basis for LDPD
All of the above are true
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OSPFB
LDPC
BGPD
IS-ISE
RSVP
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SMBB
RTSPSC
CIFSD
HTTPS
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考题
单选题Which spanning Tree Protocol has been implemented on switch 2？ （）A
STP/IEEE 802.1DB
MSTP/IEEE 802.1sC
PVST+D
PVRSTE
None of the other alternatives apply
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