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CCNA QUESTIONS : PART 15

When creating a pool of global addresses, which of the following can be used instead of the net mask command?

  / (slash notation)

Prefix-length

 No mask

Block size

SHOW ANSWER

Which of the following would be a good starting point for troubleshooting if your router is not translating?

Reboot

Call cisco

 Check your interface for the correct configuration

Run the debug all command

SHOW ANSWER

Which command will allow you to see real-time translations on your router?

Show IP nat translation               

Show IP nat statistics    

Debug IP nat

Clear IP nat translations                   

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Each mapping in a NAT table consumes about.................... bytes of memory

160

190

 240

  610

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Which of the following is not an example of standard at the Data Link Layer?

HDLC

ADCCP

 TCP

None of the above

SHOW ANSWER

In OSI model, which of the following layer provided error-free delivery of data?

Network layer

Transport layer

Session layer

Data link layer

SHOW ANSWER

End-to end connectivity is provided from host-to-host in:

Network layer

Session layer

Transport layer

  Data link layer

SHOW ANSWER

In OSI model, which of the following layer transforms information from machine format into that understandable by user

Application

Session

  Physical

  Presentation

SHOW ANSWER

How many OSI layers are converted in the X.25 standard?

  Two

  Three

  Seven

  Six

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Two network layer and transport layer protocols commonly used on internet are

 TCP and SPX

TCP and IP

 RIP and NLSP

None of the above

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Virtual terminal protocols is an example of the

 Application layer

Presentation layer

Transport layer

 None of the above

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Which layer provides the service to user?

Application

Session

Presentation

Data link

SHOW ANSWER

Transmission data rate is decided by

 Network

Physical

Data link

Transport

SHOW ANSWER
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