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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"

  • Physical Layer
  • Datalink Layer
  • Network layer
  • It is router problem

Answer: Option A

Similar Questions :

1. Which mode provides interactive configuration dialog

  • User EXEC mode
  • Privileged mode
  • Global configuration mode
  • Setup mode

Answer: Option D

2. Command to delete NVRAM on a router

  • delete NVRAM
  • delete running-config
  • erase NVRAM
  • erase start

Answer: Option D

3. Which command will take cursor to one word back

  • Ctrl+A
  • Ctrl+B
  • Ctrl+F
  • Ctrl+D

Answer: Option B

4. Which command will end configuration mode and returns to EXEC

  • Ctrl+A
  • Ctrl+B
  • Ctrl+F
  • Ctrl+Z

Answer: Option D

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

  • Privileged mode
  • Global mode
  • Setup mode
  • There will be error

Answer: Option C

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