(Reuters) - NetScout Systems Inc
The company, whose customers include the U.S. government, also said order bookings rose 27 percent during the second quarter.
Earnings doubled to $5.0 million, or 12 cents per share, from $2.4 million, or 6 cents per share, a year earlier.
Excluding items, NetScout earned 19 cents per share.
Revenue rose 21 percent to $76.5 million.
Non-GAAP operating margin was up 3 points at 17 percent.
Analysts on average had expected earnings of 18 cents per share on revenue of $74.7 million, according to Thomson Reuters I/B/E/S.
The Westford, Massachusetts-based company reaffirmed its full-year adjusted earnings of $1.21 to $1.30 per share on revenue of $340 million to $355 million.
Analysts were expecting earnings of $1.26 per share on revenue of $347.5 million.
Shares of NetScout, which competes with Opnet Technologies Inc
(Reporting by Shubham Singhal in Bangalore; Editing by Don Sebastian)