IOS Questions Answers

• 15. Which command will end configuration mode and returns to EXEC

  1. Ctrl+A
  2. Ctrl+B
  3. Ctrl+F
  4. Ctrl+Z

  Answer And Explanation

  Answer: Option D

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• 16. Command to find the broadcast address from router

  1. show running-config
  2. show startup-config
  3. show interfaces
  4. show protocols

  Answer And Explanation

  Answer: Option C

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• 17. Command to show if DTE or DCE cable is plugged int o serial 0

  1. sh int s0
  2. sh int serial 0
  3. show serial 0 controllers
  4. show controllers s 0

  Answer And Explanation

  Answer: Option D

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• 18. How many simultaneous sessions a Cisco router support by default

  1. 3
  2. 4
  3. 5
  4. 6

  Answer And Explanation

  Answer: Option C

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• 19. Command to delete NVRAM on a router

  1. delete NVRAM
  2. delete running-config
  3. erase NVRAM
  4. erase start

  Answer And Explanation

  Answer: Option D

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• 20. Which layer of OSI model will have problem if you get message "Serial1 is down, line protocol is down" after typing "show interface serial 1"

  1. Physical Layer
  2. Datalink Layer
  3. Network layer
  4. It is router problem

  Answer And Explanation

  Answer: Option A

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• 21. If you delete contents of NVRAM and reboot router, in which mode you will enter

  1. Privileged mode
  2. Global mode
  3. Setup mode
  4. There will be error

  Answer And Explanation

  Answer: Option C

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