Which statement describes the packet loss ratio requirement of the voice service for the IP bearer network?

• A.No strict requirement
• B.Allowed maximum packet loss =1%
• C.Allowed maximum packet loss =1%
• D.Allowed maximum packet loss =10-6

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Which message does the pseudo wire emulation edge-to-edge (PWE3) add for LDP signaling extension compared with Martini VLL?

• A.Notification
• B.Request
• C.Withdraw
• D.Mapping
• E.Release

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With the NAT technology, which of the following elements can be translated?

• A.Destination port number
• B.Source port number
• C.Source IP
• D.Session table
• E.Destination IP

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Which statement about the Hub s MPLS VPN networking is false?

• A.The Hub PE advertises the routes learned from one Spoke PE to other Spoke PEs. Therefore, Spoke sites
  can access other through the Hub site.
• B.The Hub PE can receive the VPN_IPv4 routes advertised by all Spoke PEs.
• C.All Spoke PEs can receive the VPN-IPv4 routes advertised by the Hub PE.
• D.When an MP-IBGB neighbor relationship is established between two spoke PEs, the value of the Import
  VPN Target attribute of one Spoke PE can be the same as tat of the Export VPN Target attribute of the
  other Spoke PE.

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As shown in the figure, RTA, RTB, RTC are interconnected over IS-IS, RTA, RTD, RTE, and RTC are interconnected over OSPF. Both IS-IS and OSPF use the default costs. RSVPTE is enabled on all routers and the interfaces between these routers. The Loopback0 interface of RTC is 192.168.0.3/32 and is advertised in both OSPF and ISIS areas. 192.168.0.3/32 is also the LSR ID of MPLS. Configurations of the MPLS and tunnel on RTA:
#
mpls lsr-id 192.168.0.1
mpls
mpls te
mpls rsvp-te
mpls te cspf
interface Tunnel1/0/0
tunnel-protocol mpls te
destination 192.168.0.3
mpls te tunnel-id 1
mpls te path metric-type igp
mpls te igp metric absolute 1
mpls te commit
#
Which path will be selected when the tunnel becomes Up? What is the metric of this tunnel?

• A.RTA-RTD-RTE-RTC; 3
• B.RTA-RTD-RTE-RTC; 1
• C.RTA-RTB-RTC; 20
• D.RTA-RTB-RTC; 1

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