New Delhi, Aug. 29 -- The Centre on Friday appointed an IRS officer as director and another as joint secretary in the National Testing Agency (NTA), taking forward its ongoing overhaul of the testing body following a series of examination-related lapses. According to two separate orders issued by the department of personnel and training on Friday, Anshuman Sharma, IRS (IT:2005), has been appointed joint secretary in the NTA under the department of higher education for five years, or until further orders, whichever is earlier. The appointment has been made by temporarily upgrading a vacant deputy secretary/director-level post to joint secretary level for an initial period of two years, the order issued by the Appointments Committee of the Cabinet said....