Actually I am Cisco Voice domain and as per above answer for doing CCNA voice i need to be a CCENT only no need to give ICND2. If i am right please confirm.
One more thing where i need your answer , if I directly go for CCIE Voice, is there any prereqisites like CCNA and what is the validity for CCIE written exam, is it 3 years or i have to give immediately.
There is no prereq for the CCIE voice but that exam will be retired on February 13, 2014.
CCIE Voice will be retiring on February 13, 2014 and the new CCIE Collaboration will become the standard for telecom, unified communications, and video professionals.
The replacement is called CCIE collaboration. There is no prereq for that either. The written is valid for 3 years but you need to take the lab within 18 months.
Step One: CCIE Collaboration Written Exam
You must pass the two-hour, written qualification exam covering those technologies and applications that comprise a Cisco Enterprise Collaboration solution before you are eligible to schedule the lab exam.
Step Two: CCIE Collaboration Lab Exam
The eight-hour lab exam tests your ability to get the collaboration solution operating in a timed test situation. You must make an initial attempt of the CCIE lab exam within 18-months of passing the CCIE written exam. If you do not pass the lab exam within three years of passing the written exam, you must retake the written exam before being allowed to attempt the lab exam again.
So written is valid for 3 years but the first attempt must be within 18 months. When you are CCIE certified you need to recertify every 2 years by taking any expert level exam.
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