JOINT FILING AGREEMENT
Exhibit 1
By this Agreement, the undersigned agree that this Statement on Schedule 13D being filed on or
about this date, and any subsequent amendments thereto filed by any of us, with respect to the
shares of Common Stock, par value $0.001 per share, of NetScout Systems, Inc. is being filed on
behalf of each of us.
DATED: November 9, 2007 |
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| SILVER LAKE PARTNERS, L.P. | ||||||
| By: | Silver Lake Technology Associates, L.L.C. | |||||
| its General Partner | ||||||
| By: | Silver Lake Group, L.L.C. | |||||
| its Managing Member | ||||||
| By: | /s/ Xxxx Xxxx | |||||
| Title: | Managing Director | |||||
| SILVER LAKE INVESTORS, L.P. | ||||||
| By: | Silver Lake Technology Associates, L.L.C. | |||||
| its General Partner | ||||||
| By: | Silver Lake Group, L.L.C. | |||||
| its Managing Member | ||||||
| By: | /s/ Xxxx Xxxx | |||||
| Title: | Managing Director | |||||
| SILVER LAKE TECHNOLOGY INVESTORS, L.L.C. | ||||||
| By: | Silver Lake Technology Management, L.L.C. | |||||
| its Manager | ||||||
| By: | /s/ Xxxx Xxxx | |||||
| Title: | Managing Director | |||||
| SILVER LAKE TECHNOLOGY ASSOCIATES, L.L.C. | ||||||
| By: | Silver Lake Group, L.L.C. | |||||
| its Managing Member | ||||||
| By: | /s/ Xxxx Xxxx | |||||
| Title: | Managing Director | |||||
| SILVER LAKE GROUP, L.L.C. | ||||||
| By: | /s/ Xxxx Xxxx | |||||
| Title: | Managing Director | |||||
| SILVER LAKE TECHNOLOGY MANAGEMENT, L.L.C. | ||||||
| By: | /s/ Xxxx Xxxx | |||||
| Title: | Managing Director | |||||
