Hello,

Cognizant will sent offer letter within 3-6 months.many students who got placement on campus in cognizant get call letter after some months so you will also get but it takes time.if you are from tier 1 colleges then they will call you early.

You can also contact hr department of company for your call letter at C2C@cognizant.com.many candidates get informaton from them.

Hope it helps!!!