In the  PPPoE  the  PPP Session  price segment,  PPPoE Client  and  PPPoE server  Ethernet data frames exchanged between an object  MAC  address may be  ____  .

In the  PPPoE  the  PPP Session  price segment,  PPPoE Client  and  PPPoE server  Ethernet data frames exchanged between an object  MAC  address may be  ____  .A . widely broadcast  MAC  addressB . Group multicast  MAC  addressC . The  MAC  address of the  PPPoE clientD . The  MAC  address of the  PPPoE serverView...

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On what device in the  MPLS  network does the  MPLS  forwarding medium voltage label (  PUSH  ) operation occur  ?

On what device in the  MPLS  network does the  MPLS  forwarding medium voltage label (  PUSH  ) operation occur  ?A . The packet enters the  MPLS  network at the  LER  on deviceB . On  all  LSR  devices in the middle of the  MPLS  networkC . The packet leaves the  MPLS  network address  LER  on deviceD . On ...

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The frequency band used to transmit data in  ADSL2+  is  ____  .

The frequency band used to transmit data in  ADSL2+  is  ____  .A . 20KHz  ~ 1MHzB . 0  ~ 4 KHzC . 1.1MHz  ~ 2_2MHzD . 20KHz  ~ 2.2MHzE . High in  10MHZView AnswerAnswer:   D

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Among the commonly used  VLAN  division methods of  EPCN  networks , which method uses the double-layer  VLAN  planning  ?

Among the commonly used  VLAN  division methods of  EPCN  networks , which method uses the double-layer  VLAN  planning  ?A . PUPVB . PSPVC . PUPSPVD . PSVView AnswerAnswer:   C Explanation: Should be  C  ,  PSPV  is a normal single-layer  VLAN  ,  PUPSPV  is  QINQ  Layer  2 VLAN

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Among  the control messages defined by the  MPCP  protocol, the one sent by the  ONU  is  _____  .( Choose one or more )

Among  the control messages defined by the  MPCP  protocol, the one sent by the  ONU  is  _____  .( Choose one or more ) A .The GATE B.Report C.Register_Req D.Register E.Register AckView AnswerAnswer:   BCE Explanation: ONU  message:  report register-req register-ack

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According to different operating modes,  VPN  can be divided into the following  types____  .

According to different operating modes,  VPN  can be divided into the following  types____  .A . Intranet VPNB . Internet VPNC . CPE-Based VPND . Network-Based VPNView AnswerAnswer:   CD

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Common  VPI/VCI  values ​​ in  ADSL  applications include  ____  .( Choose one or more )

Common  VPI/VCI  values ​​ in  ADSL  applications include  ____  .( Choose one or more )A . 0/30B . 0/35C . 0/32D . 0/16View AnswerAnswer:   BC

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What  is correct about  DOS  attacks is  ____  .

What  is correct about  DOS  attacks is  ____  .A . DOS  attacks are aimed at reducing the ability of the attacked system to provide servicesB . on to  DOS  attacks in the  TCP FLOOD  attack, you can use  TCP  proxy mechanism to defenseC . for at  DOS  attack in the  FTP FLOOD  attack...

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Which of the following descriptions about  GRE  are correct  ?  ( Choose one or more )

Which of the following descriptions about  GRE  are correct  ?  ( Choose one or more )A . bearing carrier  IP  header to  UDP  port number  47  identifies the  GRE  headerB . GRE  uses the Ethernet protocol type  Ox0800 to  identify the payload packet as  IPC . GRE VPN  can transmit multicast dataD . adopted using  IP over...

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Among  the control messages defined by the  MPCP  protocol, the one sent by the  OLT  is  ______  .( Choose one or more )

Among  the control messages defined by the  MPCP  protocol, the one sent by the  OLT  is  ______  .( Choose one or more )A . GATEB . ReportC . Register_ReqD . RegisterE . Register_AckView AnswerAnswer:   AD Explanation:

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