Login with Authentication Token ID, Email-Id and password using api

Login with Authentication Token ID, Email-Id and password using api

Hi,
I have checked generating Auth token api which inputs Email-id and Password, refer below API -request url.

https://accounts.zoho.com/apiauthtoken/nb/create?SCOPE=Zohopeople/peopleapi&EMAIL_ID=ZOHO-Email-ID&PASSWORD=ZOHO-Password

The above Request url, returns a Auth token with result as TRUE/FALSE, but the problem here is Auth token restricted to a count of 10.

1.)  Can the Auth token restriction be removed ?.

2.)  Is there any other request url to check authentication with only Email-id/Username and Password without generating Auth token ?.

3.)  Any API to Authenticate with (Auth token), Email-Id/Username and Password ?.