POWER OF ATTORNEY

        Know all by these presents, that the undersigned hereby constitutes and
appoints each of Jeff Levinson, Greg Sloan and Scott Hodgdon, signing
individually, the undersigned's true and lawful attorneys-in fact and agents to:

        (1)     execute for and on behalf of the undersigned, an officer,
director or holder of 10% of more of a registered class of securities of
NetScout Systems, Inc. (the "Company"), Forms 3, 4 and 5 in accordance with
Section 16(a) of the Securities Exchange Act of 1934, as amended (the "Exchange
Act") and the rules thereunder;

        (2)     do and perform any and all acts for and on behalf of the
undersigned that may be necessary or desirable to complete and execute such Form
3, 4 or 5, complete and execute any amendment or amendments thereto, and timely
file such forms or amendments with the United States Securities and Exchange
Commission and any stock exchange or similar authority;

        (3)     seek or obtain, as the undersigned's representative and on the
undersigned's behalf, information on transactions in the Company's securities
from any third party, including brokers, employee benefit plan administrators
and trustees, and the undersigned hereby authorizes any such person to release
any such information to each of the undersigned's attorneys-in-fact appointed by
this Power of Attorney and approves and ratifies any such release of
information; and

        (4)     take any other action of any nature whatsoever in connection
with the foregoing which, in the opinion of such attorney-in-fact, may be of
benefit, in the best interest of, or legally required by, the undersigned, it
being understood that the documents executed by such attorney-in-fact on behalf
of the undersigned pursuant to this Power of Attorney shall be in such form and
shall contain such terms and conditions as such attorney-in-fact may approve in
such attorney-in-fact's discretion.

        The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this power of attorney and the
rights and powers herein granted. The undersigned acknowledges that the
foregoing attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Exchange Act.

        This Power of Attorney shall remain in full force and effect until the
earliest to occur of (a) the undersigned is no longer required to file Forms 3,
4 and 5 with respect to the undersigned's holdings of and transactions in
securities issued by the Company, (b) revocation by the undersigned in a signed
writing delivered to the foregoing attorneys-in-fact or (c) as to any
attorney-in-fact individually, until such attorney-in-fact shall no longer be
employed by the Company.

        IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 12th day of December, 2016.

                                          /s/ Jean A. Bua
                                          ------------------------------
                                          Name: Jean A. Bua