多項(xiàng)選擇題Which statements are correct for forwarding traffic into MPLS TE tunnels？（）

A.Autoroute causes the tunnel to be treated as a directly connected link to the head-end.
B.Autoroute causes the TE head-end to establish IGP adjacency with the tail-end over the tunnel.
C.Forwarding adjacency makes the TE head-end node advertise the Tunnel LSP into the IGP.
D.Forwarding adjacency supports unequal cost load balancing over multiple TE tunnels.


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1.單項(xiàng)選擇題Which of the following statements is correct regarding PIM Sparse Mode operations？（）

A.It does not support all underlying unicast routing protocols like GBP
B.It supports shared trees only assuming all hosts want the multicast traffic
C.Receivers are registered with RP by their first-hop router
D.Receivers are joinedto the Shared Tree（rooted the rp ）by their local Designated Router（DR）
E.From the RP，traffic flows down a Source Tree to each receiver

2.單項(xiàng)選擇題In the context of GMPLS，LMP stands for（）.

A.Loop Management Protocol
B.Label Management Protocol
C.Load Management Protocol
D.Link Management Protocol
E.None of above

3.單項(xiàng)選擇題Which of the following IOS commands cause syslog messages to be stamped with time and dates？（）

A.service timestamps log datetime
B.logging trap datetime
C.service logging datetime
D.logging datetime on
E.logging timestamps on

4.單項(xiàng)選擇題How would you characterize the source and type in a denial of service attack on a router？（）

A.By perfornubg a show ip interface to see the type and source of the attack based upon the access-listmatches
B.By performing a show interface to see the transmitted load "txload" and receive load "rxload" ；if the interface utilization is not maxed out ，there is no attack underway
C.By setting up an access-list to permit all ICMP，TCP，and UDP traffic with the log or log-input commands，then use the show access-list and show log commands to determine the type and sourceof attack
D.By applying an access-list to all incoming and outgoing interfaces，turning off route-cache on all interfaces，then，when telnetting into the router perform a debug IP packet detail

5.多項(xiàng)選擇題Which statements about MPLS Label Distribution Protocol（LDP） are valid？（）

A.LDP hello packets are sent to UDP port 646
B.LDP hello packets are sent to TCP port 711
C.LDP sessions are TCP sessions to port 646
D.LDP sessions are TCP sessions to port 711
E.LDP establishes a peer relationship with another router that must be directly attached
F.LDP can establishes a peer relationship with another router that is not directly attached