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单选题
What protocol enables Ethernet over SONET/SDH encapsulation interoperability between the G-series and ML-series Ethernet cards？（）
A
LEX
B
HDLC
C
GFP-F
D
PPP/BCP
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考题
POS（PacketOverSONET/SDH，SONET/SDH上的分组）将长度固定的数据包直接映射进SONET同步载荷中，使用SONET物理层传输标准，提供了一种高速、可靠、点到点的数据连接。
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Link Control Protocol（LCP） is used for denying PPP connections to unauthorized devices.C
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None of the above
考题
单选题On an ONS 15454 node you can tunnel a（n） （）.A
SDH circuit over a SONET network delivering it as an SDH signalB
SDH circuit over a SONET network delivering it as a SONET signalC
SONET circuit over an SDH network delivering it as an SDH signalD
SONET circuit over an SDH network delivering it as a SONET signal
考题
单选题You need to configure a new Company switch for trunking. Which switch command enables a trunking protocol that appends a four byte CRC to the packet？（）A
CompanySwitch（config-if）#switchport trunk encapsulation dot1qB
CompanySwitch（config-if）#switchport trunk encapsulation itefC
CompanySwitch（config-if）#switchport trunk encapsulation fddiD
CompanySwitch（config-if）#switchport trunk encapsulation islE
None of the other alternatives apply
考题
单选题A company implements video conferencing over IP on their Ethernet LAN. The users notice that the network slows down, and the video either stutters or fails completely. What is the most likely reason for this?（）A
minimum cell rate (MCR)B
quality of service (QoS)C
modulationD
packet switching exchange (PSE)E
reliable transport protocol (RTP)
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考题
单选题Refer to the exhibit.What is the reason that the interface status is “administratively down,line protocol down”?（）A
There is a mismatch in encapsulation typesB
The wrong type of cable is connected to the interfaceC
The interface has been configured with the shutdown commandD
The interface is not receiving any keepalivesE
The interface needs to be configured as a DTE deviceF
There is no encapsulation type configured
考题
单选题What is the encapsulation mode for MPLS running on Ethernet？（）A
Packet modeB
Frame modeC
Transparent modeD
Channel modeE
Tunnel mode
考题
单选题On an ONS 15454 node you can tunnel an （）.A
SDH circuit over a SONET network delivering it as an SDH signalB
SDH circuit over a SONET network delivering it as a SONET signalC
SONET circuit over an SDH network delivering it as an SDH signalD
SONET circuit over an SDH network delivering it as a SONET signal
考题
单选题What is the data encapsulation method for the VPLS virtual circuit （VC）？（）A
MAC over MPLSB
L2TPV3C
802.1 QinQD
Ethernet over MPLSE
GRE
考题
单选题Which of these technologies is characterized as being a multipoint Layer 2 VPN that connects twoor more customer devices using Ethernet bridging techniques？（）A
DPTB
MPLSC
VPLSD
CWDME
DWDMF
SONET/SDH
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