GATE Computer Science (CS) 2022 Shift 1 Solved Paper
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Consider routing table of an organization’s router shown below:
Which of the following prefixes in CIDR notation can be collectively used to correctly aggregate all of the subnets in the routing table?
| Subnet Number | Subnet Mask | Next Hop |
| 12.20.164.0 | 255.255.252.0 | R1 |
| 12.20.170.0 | 255.255.254.0 | R2 |
| 12.20.168.0 | 255.255.254.0 | Interface 0 |
| 12.20.166.0 | 255.255.254.0 | Interface 1 |
| default | R3 |
Which of the following prefixes in CIDR notation can be collectively used to correctly aggregate all of the subnets in the routing table?
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