Where is the MPLS label imposed？（）

A . 32 B . 12 C . 20 D . 8

A . MPLS VPN B . switching path in MPLS core C . Cisco MPLS Traffic Engineering and Fast Reroute D . MPLS over ATM E . VPN over Traffic Engineering core F . any transport over MPLS

A . is nearest to the Earth B . is farthest from the Earth C . is on the opposite side of the Earth from the Moon D . and Moon and Earth are in line

A . A value of 4 represents the "Implicit NULL Label." B . A value of 0 represents the "IPv4 Explicit NULL Label." C . A value of 1 represents the "Router Alert Label". The use of this label is analogous to the use of the"Router Alert Option" in IP packets （for example， ping with record route option） D . A value of 2 represents the "IPv6 Explicit NULL Label" E . A value of 1 represents the "IPv1 Explicit NULL Label" F . A value of 3 represents the "Implicit NULL Label&quot

A . to enable label switching on the frame mode interface B . to restrict MPLS availability to predefined time periods C . to restrict end users from seeing the routers in the MPLS network D . to restrict label switching to a limited number of network

A . hub and spoke B . PE C . CE D . hub E . spoke

A . 流 B . 拓扑 C . 路由 D . IP

A . version B . experimental C . label D . protocol E . TTL F . bottom-of-stack indicato

A . and Moon and Earth form a right angle B . and Moon and Earth are in line C . crosses the celestial equator D . is farthest from the Earth

A . It removes the top label in the MPLS label stack. B . It adds a top label in MPLS label stack. C . It replaces the top label in the MPLS label stack with another value. D . It replaces the top label in the MPLS label stack with a set of labels. E . None of above.

A . It is a label distribution protocol for MPLS B . It is a set of procedures and messages by which LSRs establish Label Switch Paths （LSPs） through a network C . Tag distribution Protocol （TDP） was the basis for LDP D . All of the above are true

A . Show mpls Idp neighbor detail B . Show mpls Idp bindings C . Show mpls Idp parameters D . Show mpls Idp discovery

A . ClientID B . ID C . AssociatedControlID D . ControlID

A . VPI B . VCI C . VPI and VCI D . Specific 4 bytes label E . None of above

A . A、12 B . B、16 C . C、20 D . D、24

A . to make CEF tables smaller B . to enable label switching on the frame mode interface C . to restrict MPLS availability to predefined time periods D . to restrict label switching to a limited number of networks E . to restrict end users from seeing the routers in the MPLS network

A . show tag-switching tdp binding 1.1.1.0/24 B . show tag-switching tdp bindings neighbor 1.1.1.0 C . show tag-switching interface e0/0 D . A and B both will show the binding. E . All of the above.

A . The stack bit will only be used when LDP is the label distribution protocol B . The label is the last entry in the label stack. C . The stack bit is for Cisco implementations exclusively and will only be used when TDP is the label distribution protocol. D . The stack bit is reserved for future use.

A . It adds the VPN label into the top label in the MPLS label stack B . It replaces the top label in the MPLS label stack with a VPN label and propagates C . It replaces the bottom label in the MPLS label stack with a VPN label and propagates D . It removes the top label in the MPLS label stack and does a Layer 3 lookup on underlying IP packets E . None of above

A . 正确 B . 错误

A．Make out B．Make sure C．Make up D．Make for

A．gradability B．complementarity C．hyponymy D．homonymy