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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 commands affects interfaces/processes only

  • User EXEC mode
  • Privileged mode
  • Specific configuration mode
  • Setup mode

Answer: Option C

2. How many simultaneous sessions a Cisco router support by default

  • 3
  • 4
  • 5
  • 6

Answer: Option C

3. How to display configurable parameters and statistics of all interfaces on router

  • show running-config
  • show startup-config
  • show versions
  • show interfaces

Answer: Option D

4. Which mode provides interactive configuration dialog

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

Answer: Option D

5. What happens first after starting a router

  • Load IOS from flash memory
  • Power on self test of router
  • Searching by IOS of a valid configuration
  • None of above

Answer: Option B

Explanation:

When you bring up a router, it firstly run a Power on self test(POST), If it passes then it will load IOS from flash memory then after that IOS looks for a valid configuration.

Read more from - IOS Questions Answers
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