单项选择题

Router B1, an internal router in area 1, displays the f……

Router B1, an internal router in area 1, displays the following output. The only two ABRs connected to area 1 are performing Type 3 LSA filterinG. Which of the following answers is true based on the information in the output from B1?（）
R1# show ip route 10.1.0.0 255.255.0.0 longer - prefixes
! Legend lines omitted for brevity
10.0.0.0/8 is variably subnetted, 17 subnets, 3 masks
O 10.1.2.0/24 [110/658] via 10.10.13.1, 00:00:32, Serial0/0/0.1
O IA 10.1.1.0/24 [110/658] via 10.10.23.2, 00:41:39, Ser ial0/0/0.2
O IA 10.1.3.0/24 [110/658] via 10.10.23.2, 00:41:39, Serial0/0/0.2

A. A Type 3 LSA for 10.2.2.0/24 was filtered by both ABRs
B. A Type 3 LSA for 10.1.2.0/24 was not filtered by both ABRs
C. A Type 3 LSA for 10.1.3.0/24 was not filtered by at least one ABR
D. A Type 3 LSA for 10.1.1.0/24 filtered by both ABRs

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热门试题

多项选择题Which of the following LSA types describe information related to topology or subnets useful for calculating routes for subnets inside the OSPF domain?（）

A. 1
B. 2
C. 3
D. 4
E. 5
F. 7

多项选择题The following output was taken from Router R3. A scan of R3s configuration shows that no bandwidth commands have been configured in this router. Which of the following answers lists configuration settings could be a part of a configuration tha t results in the following output?（） R3#show ip ospf interface brief Interface PID Area IP Address Mask Cost State Nbrs F C Se0 0 0.2 3 34 10.10.23.3 29 647 P2P 1 1 Se0 0 0.1 3 34 10.10.13.3 29 1000 P2P 1 1 Fa0 0 3 34 10.10.34.3 24 20 BDR 1 1

A. An a uto - cost reference - bandwidth 1000 command in router ospf mode
B. An auto - cost reference - bandwidth 2000 command in router ospf mode
C. An ip ospf cost 1000 interface S0/0/0.1 command in router ospf mode
D. An auto - cost reference - bandwidth 64700 command i n router ospf mode

多项选择题Which of the following LSA types describes topology information that, when changed, requires a router in the same area to perform an SPF calculation?（）

A. 1
B. 2
C. 3
D. 4
E. 5
F. 7

单项选择题R1 is internal to area 1, and R2 is internal to area 2. Subnet 10.1.1.0 24 exists in area 2 as a connected subnet off R2. ABR ABR1 connects area 1 to backbone area 0, and ABR2 c onnects area 0 to area 2. Which of the following LSAs must R1 use when calculating R1s best route for 10.1.1.0 24?（）

A. R2's Type 1 LSA
B. Subnet 10.1.1.0/24's Type 2 LSA
C. ABR1's Type 1 LSA in area 0
D. Subnet 10.1.1.0/24's Type 3 LSA in Area 0
E. Subnet 10.1.1.0/24's Type 3 LSA in Area 1

多项选择题Routers R1, R2, R3, and R4 connect to the same 10.10.10.0 24 LAN- based subnet. OSPF is fully working in the subnet. Later, R5, whose OSPF priority is higher than the other four routers, joins the subnet. Which of the following are true about the OSPF database exchange process over this subnet at this point?（）

A. R5 will send its DD, LSR, and LSU packets to the 224.0.0.5 all - DR - routers multicast address.
B. R5 will send its DD, LSR, and LSU pack ets to the 224.0.0.6 all - DR - routers multicast address.
C. The DR will inform R5 about LSAs by sending its DD, LSR, and LSU packets to the 224.0.0.6 all- SPF - routers multicast address.
D. The DR will inform R5 about LSAs by sending its DD, LSR, and LSU pa ckets to the 224.0.0.5 all- SPF - routers multicast address.