JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)(1)
EXHIBIT
A
JOINT
FILING AGREEMENT PURSUANT TO RULE 13d-1(k)(1)
This
agreement is made pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act
of 1934, as amended (the “Exchange Act”), by and among the parties listed below,
each referred to herein as a “Joint Filer”. The Joint Filers agree
that a statement of beneficial ownership as required by Section 13(d) of the
Exchange Act and the rules thereunder may be filed on each of their behalf on
Schedule 13D or Schedule 13G, as appropriate, with respect to their ownership of
the Common Stock, par value $0.001 per share, of Sycamore Networks, Inc., and
that said joint filing may thereafter be amended by further
joint filings. The Joint Filers state that they each
satisfy the requirements for making a joint filing under Rule
13d-1. This Agreement may be executed in any number of
counterparts, all of which taken together shall constitute
one and the same instrument.
IN
WITNESS WHEREOF, the undersigned hereby execute this Joint Filing Agreement
as of the 14th day
of January, 2010.
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/s/ Xxxxxxx Xxxxxxxxx *
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Xxxxxxx
Xxxxxxxxx, in his capacity as Manager
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of
Sparta Group MA LLC Series 4
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/s/ Xxxxxxx Xxxxxxxxx *
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Xxxxxxx
Xxxxxxxxx
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/s/ Xxxxxxxx Xxxxxxxxx *
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Xxxxxxxx
Xxxxxxxxx
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| *By | /s/ Servjeet X. Xxxxxx |
| Servjeet X. Xxxxxx | |
| Attorney-in-Fact | |
* Xx. Xxxxxxxx X. Xxxxxx is
signing as attorney-in-fact pursuant to powers of attorney dated January 13,
2010 granted by each Reporting Person, copies of which are filed as exhibits
hereto.
