from typing import Optional


def prepare_suffix(page: Optional[str] = '', limit: Optional[str] = '') -> str:
    """
    Create the relevant suffix for the domains command,
     Either there is a complete request that should be sent or page and limit arguments.
    :param page: The number of the requested page for domains command.
    :param limit: The limit of the queries to return from the domains command.
    :return: (str) with the suffix.
    """
    suffix = ''
    if page:
        suffix += f'page={page}&'
    if limit:
        suffix += f'limit={limit}&'
    return suffix