4A0-103 無料問題集「Alcatel-Lucent Multi Protocol Label Switching」

（A）It is used to carry the Ether type value.

（B）It is used to carry fragmentation flag information.

（C）It is used to carry QoS classification.

（D）Each implementation can use it as they see fit.

（E）It is used to carry the TTL value.

（A）3

（B）1

（C）4

（D）2

（A）CSPF looks for the entire bandwidth requested, implementing MBB.

（B）After 5 failed attempts to find the bandwidth requested, the head end disables the LSP.

（C）CSPF looks for the delta bandwidth, implementing make-before-break.

（D）CSPF looks for the delta bandwidth, taking down the first path if necessary.

（A）It specifies the packet's header length

（B）It identifies the origin of the packet.

（C）It identifies the FEC.

（D）It specifies the type of data contained in the packet

（A）Each downstream router updates information inside the ERO.

（B）ERO is not always present in the PATH message.

（C）ERO contains label information used to signal an LSP path.

（D）ERO is used by downstream routers to determine the next-hop for the LSP.

（A）The detour LSP can take one or more hops before merging back on the protected LSP.

（B）The merge point of the protected LSP must be the next-next-hop node

（C）The label recording desired flag must be set in the session attribute object in order for the PLR to know what label to swap when using the detour LSP.

（D）The ingress router will set the local protection desired flag in the session attribute object of the path message to inform all routers along the protected LSP path to establish detour LSPs.

（E）Each PLR signals a detour LSP that avoids the downstream node. If the downstream node cannot be avoided, a detour LSP that avoids the downstream link is signaled.

（A）The customer's Layer 2 Header is preserved at the iLER for Layer 3 services.

（B）The service provider's Layer 2 header is added at the iLER for Layer 2 services.

（C）The customer's Layer 2 header is preserved at the iLER for Layer 2 services.

（D）The service provider's Layer 2 header is added at the iLER for Layer 3 services.

（A）LSP-3 takes R1-R3-R5-R6 and LSP-4 takes R1-R2-R4-R6.

（B）LSP-3 takes R1-R2-R4-R6 and LSP-4 has no available path.

（C）LSP-3 takes R1-R2-R4-R6 and LSP-4 takes R1-R3-R5-R6.

（D）LSP-3 takes R1-R3-R5-R6 and LSP-4 has no available path.

（A）The ingress router will set the local protection desired flag in the session attribute object of the path message to inform all routers along the protected LSP path to establish bypass tunnels.

（B）Each PLR will signal a bypass tunnel that avoids the next-hop node or link.

（C）When the bypass tunnel is in use, the MP will include the RRO object in its PathErr message, with the local protection in use flag set to notify the ingress router that it is using the bypass tunnel.

（D）The ingress router will include a RRO object in the path message to indicate the routers that should be PLRs and MPs along the protected path.

（E）When a failure occurs, the PLR will push an additional label onto the label stack and start forwarding traffic onto its bypass tunnel.

（A）Frame mode requires multiple sessions between peers.

（B）The lower transport address initiates the session.

（C）An LDP session is established immediately after Init messages are exchanged between
peers.

（D）Established LDP sessions run over a TCP connection.

（A）It eliminates the need to run IGP on all routers within an AS.

（B）It eliminates double route lookups on all routers within an AS.

（C）It makes use of MPLS resiliency features available within an AS.

（D）It eliminates the need for an iBGP full mesh on all core routers.

（A）Label values may be dynamically assigned by IGP.

（B）Label values may be dynamically assigned by RSVP-TE.

（C）Label values may be reserved for special uses.

（D）Label values may be dynamically assigned by LDP.

（A）The secondary path will take R1-R2-R3-R5-R6.

（B）The secondary path will take R1-R3-R2-R4-R5-R6.

（C）The secondary path will take R1-R2-R4-R6.

（D）The secondary path will take R1-R3-R2-R4-R6.

（A）The router has new entries added for the given FEC in its FI

（B）The router has multiple LSP tunnels for the given FEC.

（C）The router has new entries added for the given FEC in its LIB.

（D）The router generates a single label for the given FEC and advertises it to all its peers,

（A）IGP-based LSPs must use LDP signaling.

（B）IGP-based LSPs are established solely from information contained in routing tables.

（C）The constraint-based routed LSP is calculated at each hop of the LSP, based on the route table and user defined constraints.

（D）The constraint-based routed LSP is calculated at the ingress of the network, based on the router database and user defined constraints.

（A）The LSR looks up the PATH message's destination IP address in the FIB.

（B）The LSR forwards the PATH message based on the HOP object in the RSB.

（C）The LSR regenerates and forwards a new PATH message.

（D）The LSR stores the PATH message in the PS

（A）The eLER will receive packets with a top label value of 0.

（B）The eLER will receive packets with a top label value of 3.

（C）The penultimate router will forward packets to the eLER, based on the IP header.

（D）The penultimate router will pop the top label from the packets.

（A）Enable LDP aggregate prefix match.

（B）Disable LDP exact match on 10.10.10.2/32 and 10.10.10.4/32.

（C）Disable route summarization on router R3.

（D）Create an import policy to accept 10.10.10.2/32 and 10.10.10.4/32.

（A）To

（B）Tunnel ID

（C）Name

（D）LSP ID