JN0-346 · Question #55
Which two prefixes are martian routes by default? (Choose two.)
The correct answer is B. 127.0.0.0/8 D. 192.0.0.0/24. Martian addresses are host or network addresses about which all routing inf ormation is ignored. When received by the routing device, these routes are ignored. They commonly are sent by improperly configured systems on the network and have destination addresses that are…
Question
Which two prefixes are martian routes by default? (Choose two.)
Options
- A127.0.0.0/16
- B127.0.0.0/8
- C192.0.0.0/16
- D192.0.0.0/24
How the community answered
(53 responses)- A6% (3)
- B79% (42)
- C15% (8)
Explanation
Martian addresses are host or network addresses about which all routing inf ormation is ignored. When received by the routing device, these routes are ignored. They commonly are sent by improperly configured systems on the network and have destination addresses that are obviously invalid. To view the default and configured martian routes, run the show route martians command. IPv4 Martian Addresses user@host> show route martians table inet. 0.0.0.0/0 exact -- allowed 0.0.0.0/8 orlonger -- disallowed 127.0.0.0/8 orlonger -- disallowed 192.0.0.0/24 orlonger -- disallowed 240.0.0.0/4 orlonger -- disallowed 224.0.0.0/4 exact -- disallowed 224.0.0.0/24 exact -- disallowed 0.0.0.0/0 exact -- allowed 0.0.0.0/8 orlonger -- disallowed 127.0.0.0/8 orlonger -- disallowed 192.0.0.0/24 orlonger -- disallowed 240.0.0.0/4 orlonger -- disallowed Etc. understanding.html
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