Refer to the exhibit. Which pair of crypto isakmp key commands would correctly configure PSK on the two routers?

Refer to the exhibit. Which pair of crypto isakmp key commands would correctly configure PSK on the two routers?

• R1(config)# crypto isakmp key cisco123 address 209.165.200.227
  R2(config)# crypto isakmp key cisco123 address 209.165.200.226
• R1(config)# crypto isakmp key cisco123 address 209.165.200.226
  R2(config)# crypto isakmp key cisco123 address 209.165.200.227
• R1(config)# crypto isakmp key cisco123 hostname R1
  R2(config)# crypto isakmp key cisco123 hostname R2
• R1(config)# crypto isakmp key cisco123 address 209.165.200.226
  R2(config)# crypto isakmp key secure address 209.165.200.227

Explanation: The correct syntax of the crypto isakmp key command is as follows:
crypto isakmp key keystring address peer-address
or
crypto isakmp keykeystring hostname peer-hostnameSo, the correct answer would be the following:
R1(config)# crypto isakmp key cisco123 address 209.165.200.227
R2(config)# crypto isakmp key cisco123 address 209.165.200.226

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