Select the operations master role that is responsible for providing backward compatibility with windows nt servers configured as windows nt backup domain controllers or member servers.?

PDC emulator master.

Explanation:

The PDC or primary domain control emulator master is the primary domain control for windows NT and other pre-windows operating system like windows 2000, windows 98, windows 95. It help the windows NT4.0 to authenticate and process passwords, since it can inter-replicate passwords from other domain controls in an active directory. It is the first server used as a domain control in a domain and can only be allowed in one domain control at a time in an active directory.

i would first let him be aware that a cover letter is official and confidential and it requires a proper formatting so that the employer doesn't have hard time when going through it. he should write it in paragraphs of about two to four sentences and use proper grammar a , spelling and proper punctuation. i will also advice him not to be emotional and not also to use images.then base his attention to the details of the job described and not other things. that is he be specific to the responsibilities and to the employers requirements. on this he should make sure that the letter reflects how good he is for the requirements detailed by the employer

the letter should not be too long nor too short.