GB0-391-ENU

Among  the broadband access transmission media, the highest achievable transmission rate is  ____  .A . same coaxial cableB . Copper quality UTPC . no radio wavesD . optical fiberE . electric power lineView AnswerAnswer:   D

Which of the following descriptions about  GRE  are correct  ?  ( Choose one or more )A . bearing carrier  lP  head is  lP  protocol number  47  identifies the  GRE  headerB . the GRE  with the Ethernet protocol type  0 x0806  identified load package for  lPC . GRE VPN  can transmit multicast dataD . adopted using  IP over IP ...

Hereinafter  GREVPN  and  BGP / MPLS VPN  described above are correct  ____  .A . Both can separate the address spaceB . both point to point tunnelC . GREVPN  does not separate address space,  BGP/MPLS VPN  can separate address spaceD . GRE VPN  can provide advanced security such as data encryption, but  BGP/MPLS VPN ...

The  following are functions of the access layer  ____  .( Choose one or more )A . owns a large number of interfaces, and for the final connected user computerB . access into the security controlC . High -speed packet-switchedD . complex routing strategies complicatedView AnswerAnswer:   AB

What  is incorrect about the description of  L2TP VPN  and  SSL VPN?A . have no need to install, maintain clientB . Both support  Web  accessC . All support  lP  access modeD . are based on  TCP  packageView AnswerAnswer:   ABD

The  VPI/VCI  parameters of  ADSL  connection are negotiated and determined in  ____  .A . Line Road activateB . DMT  modulationC . Jian Li low-level link  VCCD . PPPoE  negotiationView AnswerAnswer:   C

Which of the following are measurement standards for voice quality  ?A . MOSB . PESQC . PQSMD . PSQMView AnswerAnswer:   ABD

The  following description does not belong to  SSL  handshake protocol layer function are  ____  .A . Negative responsible for the establishment, maintenance  SSL  sessionB . insurance certificate, reliable data transmissionC . isobutyl the normally turned off  SSL  connectionD . verify the integrity of the card dataView AnswerAnswer:   BD

In  EPON  applications, if the home gateway or switch on the user side is provided by the operator and unified  VLAN  management, then the  VLAN  operation mode on the  UNI  port should be configured as  ____  .A . VLAN  tagging modeB . VLAN  transparent transmission modeC . VLAN Translation  ModeD . VLAN...

The following of  GRE VPN  and  BGP / MPLS VPN  correctly described  ____  .A . Both can separate the address spaceB . both point to point tunnelC . GRE VPN  can separate address space,  BGP/MPLS VPN  cannot separate address spaceD . GRE VPN  cannot separate address space,  BGP/MPLS VPN  can separate address...