Online Access Free H12-831_V1.0-ENU Exam Questions

On the network shown in the figure, OSPF runs on R1, R2, and R3, and OSPF BFD is enabled. R1 and R3 use loopback interfaces to establish an iBGP peer relationship. If GE0/0/1 of R2 is shut down, which of the following is the longest period after which the BGP peer relationship of R1 will change from Up to Down?

• A.40s
• B.180s
• C.3s
• D.60s

On an MPLS network, after an LSR receives a Hello message from a peer, the LSR establishes an LDP adjacency with the peer. The Hello message is sent in multicast or unicast mode.

• A.FALSE
• B.TRUE

The path that IP packets pass through on an MPLS network is called a label switched path (LSP). An LSP is a bidirectional path that specifies the transmission direction of data flows.

• A.FALSE
• B.TRUE

On the network shown in the figure, an administrator first completes the routing configuration and then enables MPLS and LDP on R1, R2, and R3 and their interconnected interfaces. In this manner, traffic from PC1 to PC2 can be forwarded based on MPLS . Which of the following routing configurations can implement this function?

Options:

• A.nginx
  CopyEdit
  R1
  ospf 1
  area 0
  network 1.1.1.1 0.0.0.0
  network 10.1.12.0 0.0.0.255
  R2
  ospf 1
  area 0
  network 2.2.2.2 0.0.0.0
  network 10.1.12.0 0.0.0.255
  network 10.1.23.0 0.0.0.255
  R3
  ospf 1
  area 0
  network 3.3.3.3 0.0.0.0
  network 10.1.23.0 0.0.0.255
• B.nginx
  CopyEdit
  R2
  ospf 1
  area 0
  network 2.2.2.2 0.0.0.0
  network 10.1.12.0 0.0.0.255
  network 10.1.23.0 0.0.0.255
  R3
  ospf 1
  area 0
  network 3.3.3.3 0.0.0.0
  network 10.1.23.0 0.0.0.255
  bgp 65000
  router-id 3.3.3.3
  peer 1.1.1.1 as-number 65000
  peer 1.1.1.1 connect-interface LoopBack 0
  network 10.3.3.0 24
  ip ip-prefix 1 index 10 permit 10.1.1.0 24
  route recursive-lookup tunnel ip-prefix 1
• C.nginx
  CopyEdit
  R1
  ospf 1
  area 0
  network 1.1.1.1 0.0.0.0
  network 10.1.12.0 0.0.0.255
  network 10.1.1.0 0.0.0.255
  R2
  ospf 1
  area 0
  network 2.2.2.2 0.0.0.0
  network 10.1.12.0 0.0.0.255
  network 10.1.23.0 0.0.0.255
  R3
  ospf 1
  area 0
  network 3.3.3.3 0.0.0.0
  network 10.1.23.0 0.0.0.255
  network 10.3.3.0 0.0.0.255
• D.nginx
  CopyEdit
  R1
  bgp 65000
  router-id 1.1.1.1
  peer 3.3.3.3 as-number 65000
  peer 3.3.3.3 connect-interface LoopBack 0
  network 10.1.1.0 24
  R3
  bgp 65000
  router-id 3.3.3.3
  peer 1.1.1.1 as-number 65000
  peer 1.1.1.1 connect-interface LoopBack 0
  network 10.3.3.0 24

On the OSPF network shown in the figure, area 1 is a common area, area 2 is a stub area, and area 3 is an NSSA. R5 imports an external route 10.0.5.5/32. Given this, which of the following routers does not have the route 10.0.5.5/32 in its routing table?

• A.R2
• B.R6
• C.R4
• D.R3