Document:

INCENTIVE STOCK OPTION AGREEMENT
                                       FOR
                 OPTIONEE OF RESTATED 1991 STOCK OPTION PLAN

      This Agreement is made as of the 21st day of February, 2001, between
ELECSYS CORPORATION., a Kansas corporation (the "Company"), and Kyle Reinoehl,
an employee to the Company or any Subsidiary ("Optionee").

     1. BACKGROUND. In order to attract and retain the best available personnel
for positions of substantial responsibility in the Company or any Subsidiary and
to promote the success of the Company's business, the Company has adopted the
Restated 1991 Stock Option Plan (the "Plan"), a copy of which is attached hereto
as Exhibit A. Pursuant to the Plan certain Employees and Consultants of the
Company or any Subsidiary may be designated by the Board of Directors of the
Company to receive an option to purchase shares of Common Stock of the Company
("Common Stock"). Capitalized terms used herein and otherwise not defined have
the meaning ascribed to them in the Plan.

     2. GRANT OF OPTION. The Company hereby grants to Optionee an option to
purchase up to an aggregate of 15,000 Shares of Common Stock of the Company (the
"Option Shares"), in accordance with the vesting schedule set forth in Section 3
hereof (the "Option"); provided however, that the Option is subject to the terms
of the Plan and the Stock Transfer Restriction Agreement for Exercise of Stock
Option attached hereto as Exhibit B ("Stock Restriction Agreement"), the
provisions of which are incorporated herein by reference and the terms of which
shall control in the event of any conflict with the terms hereof. The Option
hereby granted is an Incentive Stock Option.

     3. VESTING OF SHARES. The option to purchase shares of Common Stock shall
cumulatively vest and be exercisable for 5,000 shares of Common Stock on
February 21, 2002, 5,000 shares of Common Stock on February 21, 2003 and 5,000
shares of Common Stock on February 21, 2004; provided, however, that the
unvested portions of the Options shall vest and be exercisable immediately prior
to any of the following transactions: (i) the closing of the Company's sale of
all or substantially all of its assets or (ii) the acquisition of the Company by
another entity by means of a merger or consolidation resulting in the exchange
of the outstanding shares of Company's capital stock for securities or
consideration issued or caused to be issued by the acquiring entity or its
subsidiary or (iii) the acquisition from one or more of the shareholders of the
Company of more than fifty percent (50%) of the Common Stock by a single person
or group of persons acting together (collectively, a "Change in Control
Transaction"); provided further, however, that if the Change in Control
Transaction is with any person who is a holder of Common Stock on the date
hereof, or an entity under the control of such person through stock ownership or
otherwise, the unvested portion of the options shall not vest and the options
shall remain in effect to vest in accordance with the vesting schedule set forth
in this Section 3.

<PAGE>

      4.  EXERCISE OF OPTION

     (a) An Option shall be deemed to be exercised when the Optionee or other
authorized person gives to the Company written notice of such exercise and full
payment for the Option Shares with respect to which the Option is exercised has
been received by the Company. As a condition to the exercise of an Option, the
Company will require the Optionee to execute a Stock Restriction Agreement.

     (b) Until the issuance (as evidenced by the appropriate entry on the books
of the Company or of a duly authorized transfer agent of the Company) of the
stock certificate evidencing such Option Shares, no right to vote or receive
dividends or any other rights as a shareholder shall exist with respect to the
Option Shares, notwithstanding the exercise of the Option. The Company shall
issue (or cause to be issued) such stock certificates promptly upon exercise of
the Option. No adjustment will be made for a dividend or other right for which
the record date is prior to the date of the stock certificate is issued, except
as provided in Section 12 of the Plan.

     (c) Exercise of an Option in any manner shall result in a decrease in the
number of Option Shares that thereafter may be available, both for purposes of
the Plan and for sale under the Option, by the number of Option Shares as to
which the Option is exercised.

     5. EXERCISE PRICE AND CONSIDERATION.

     (a) EXERCISE PRICE. The per Share exercise price for the Option Shares to
be issued pursuant to exercise of an Option shall be $1.50, which is equal to
the closing price per share of the Common Stock on the date hereof as listed on
the American Stock Exchange as reported in The Wall Street Journal.

     (b) FORM OF CONSIDERATION. The consideration to be paid for the Option
Shares to be issued upon exercise of an Option, including the method of payment,
shall be determined by the Board of Directors and may consist entirely of cash,
check, other shares of Common Stock having a fair market value on the date of
surrender equal to the aggregate exercise price of the Option Shares as to which
said option shall be exercised, or any combination of such methods of payment,
or such other consideration and method of payment for the issuance of Option
Shares to the extent permitted under the laws of the state of incorporation of
the Company. In making its determination as to the type of consideration to
accept, the Board of Directors shall consider if acceptance of such
consideration may be reasonably expected to benefit the Company.

     (c) FAIR MARKET VALUE. The fair market value of shares of Common Stock
delivered to the Company as payment of the purchase price upon exercise of an
Option shall be determined by the Board in its discretion; provided, however,
that where there is a public market for the Common Stock, the fair market value
per share of Common Stock shall be the mean of the bid and asked prices (or the
closing price per share if the Common Stock is listed on the American Stock
Exchange) of the Common Stock for the date of grant, as reported in The Wall
Street Journal (or, if not so reported, as otherwise reported by the American
Stock Exchange) or,

<PAGE>

if the Common Stock is listed on a stock exchange, the fair market value per
share shall be the closing price on such exchange on the date of grant of the
Option, as reported in The Wall Street Journal.

     6. TERM OF OPTION.

     (a) GENERAL RULE. Except as provided in Section 6(b) and Section 6(c)
hereof and in Section 10 and Section 12 of the Plan, the term of each Option
granted pursuant to Section 2 hereof shall be ten (10) years from the date
hereof.

     (b) EMPLOYMENT OF OPTIONEE TERMINATED. Notwithstanding anything provided to
the contrary in the Plan, if Optionee's employment with the Company or any
Subsidiary is terminated by the Company or any Subsidiary (i) for fraud or
dishonesty of Optionee in connection with fulfillment of his duties and
responsibilities as an employee of the Company or any Subsidiary, including
without limitation, embezzlement of Company or Subsidiary funds; or (ii) because
employee is charged with a felony under any applicable criminal code or statute,
or (iii) if Optionee quits the employment of the Company or any Subsidiary, then
all unexercised Options, whether vested or unvested, shall terminate immediately
upon such termination of employment. If Optionee's employment with the Company
or any subsidiary is terminated for a reason other than those described in the
preceding sentence the unvested portion of the Option shall terminate
immediately and the entire portion of the Option which was vested prior to
termination of Employee's employment, to the extent that it was exercisable for
sixty (60) days following Employee's termination date. To the extent that the
Option was not exercisable on the Employee's termination date, or if the Option
is not exercised (to the extent it was entitled to be exercised), within the 60
day period, the Option shall terminate.

     (c) BREACH OF NON-DISCLOSURE COVENANT NOT TO COMPETE. Notwithstanding
anything provided to the contrary in the Plan, if Optionee breaches any
applicable nondisclosure covenant or covenant not to compete set forth in any
employment agreement between Optionee and the Company or a Subsidiary, or
otherwise applicable to Optionee under the law of the jurisdiction where
Optionee is employed, then all unexercised Options, whether vested or unvested,
shall immediately terminate.

     7. NON-TRANSFERABILITY OF OPTIONS. The Option may not be sold, pledged,
assigned, hypothecated, transferred, or disposed of in any manner other than by
will or by the laws of descent or distribution and may be exercised, during the
lifetime of the Optionee, only by the Optionee.

     8. CONDITIONS UPON ISSUANCE OF OPTION SHARES.

     (a) Option Shares shall not be issued pursuant to the exercise of an Option
unless the exercise of such Option and the issuance and delivery of such Option
Shares pursuant thereto shall comply with all relevant provisions of law,
including, without limitation, the Securities Act of 1933, as amended, the
Securities Exchange Act of 1934, as amended, the rules and regulations
promulgated thereunder, and the requirements of any stock exchange upon which
the Common

<PAGE>

Stock may then be listed, and shall be further subject to the reasonable
approval of counsel for the Company with respect to such compliance.

     (b) As a condition to the exercise of an Option, the Company may require
the person exercising such Option to represent and warrant at the time of any
such exercise that the Option Shares are being purchased only for investment and
without any present intention to sell or distribute such Option Shares if, in
the reasonable opinion of counsel for the Company, such a representation is
required by any of the aforementioned relevant provisions of law.

     (c) As a condition to the issuance of Option Shares, the Optionee shall (a)
remit to the Company at the time of any exercise of the Option any taxes
required to be withheld by the Company under federal, state or local laws as a
result of the exercise of the Option, and/or (b) instruct the Company to
withhold in accordance with applicable law from any compensation payable to the
Optionee the taxes required to be held by the Company under federal, state or
local laws result of the exercise of the Option. The determination of the amount
of any such withholding shall be made by the Company in its sole discretion.

     (d) All Option Shares issued pursuant to the exercise of the Option shall
be subject to the terms and provisions of the Stock Restriction Agreement, an
example of which is attached hereto as Exhibit B.

      IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the date first above written.

                                    OPTIONEE

                                    --------------------------------------
                                    Name:

                                    ELECSYS CORPORATION
                                    a Kansas corporation

                                    By:
                                       ---------------------------------------
                                          Keith S. Cowan, President

Exhibits

A.    Restated 1991 Stock Option Plan
B.    Stock Transfer Restriction Agreement<PAGE>

                                                                    EXHIBIT 10.1

                                NAVISITE, INC.

                             COMMON STOCK WARRANT

                                     No. 1

                               December 15, 2000
                                  __________

THIS COMMON STOCK WARRANT AND ANY SECURITIES ISSUABLE UPON THE EXERCISE OR
CONVERSION OF THIS COMMON STOCK WARRANT HAVE NOT BEEN REGISTERED UNDER THE
SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE TRANSFERRED OR OTHERWISE
DISPOSED OF UNLESS THEY HAVE BEEN REGISTERED UNDER SUCH ACT OR PURSUANT TO AN
EXEMPTION FROM REGISTRATION UNDER SUCH ACT.

                                   __________

                      Warrant to Purchase 2,601,626 Shares
                                of Common Stock

     NaviSite, Inc., a Delaware corporation (the "Company"), hereby certifies
that, for value received, CMGI, Inc., a Delaware corporation ("CMGI"), or any
transferee to whom this warrant (the "Warrant") is properly transferred (the
"Holder"), is entitled, on the terms set forth below, to purchase from the
Company at any time until 5:00 p.m., Boston time, on December 15, 2005 (the
"Expiration Date") 2,601,626 fully paid and nonassessable shares of the Common
Stock, par value $0.01 per share (the "Common Stock"), of the Company, at a
price per share equal to $5.765625, subject to adjustments as provided below
(the "Purchase Price").

     This Warrant is being issued pursuant to the Note and Warrant Purchase
Agreement dated December 12, 2000 between the Company and CMGI (the "Note and
Warrant Purchase Agreement").

     1.   Exercise of Warrant; Conversion of Warrant; Transfer of Warrant.

          (a)  Exercise of Warrant.  At any time prior to 5:00 p.m. on the
               -------------------
Expiration Date, the rights represented by this Warrant may be exercised by the
Holder, in whole or in part, upon surrender of this Warrant to the Company,
together with an executed Notice of Exercise or Conversion, substantially in the
form attached hereto as Exhibit A, at the Company's primary executive office,
                        ---------
with payment by check to the Company of the amount obtained by multiplying
<PAGE>

the number of shares of Common Stock with respect to which this Warrant is being
exercised by the Purchase Price.

          (b)  Conversion of Warrant.  In addition to, and without limiting, any
               ----------------------
other rights of the Holder hereunder, the Holder may elect to convert this
Warrant, in whole or in part, into shares of Common Stock at any time prior to
5:00 p.m. on the Expiration Date by surrendering this Warrant to the Company,
together with an executed Notice of Exercise or Conversion substantially in the
form attached hereto as Exhibit A, at the Company's primary executive office.
                        ---------
Upon receipt of such notice and surrender of the Warrant by the Holder, or on
such later date as specified in the Notice of Exercise or Conversion, the
Company shall deliver to the Holder within a reasonable time, without payment by
the Holder of any cash or other consideration, that number of shares of Common
Stock computed using the following formula:

          X =  Y(A-B)
               ------
                 A

Where:   X =   the number of shares of Common Stock to be issued to the Holder.

         Y =   the number of shares of Common Stock with respect to which this
               Warrant is being converted.

         A =   the Fair Market Value, as defined below, of one share of Common
               Stock.

         B =   Purchase Price.

              If the Common Stock is traded on the Nasdaq National Market, the
Fair Market Value of one share of Common Stock shall be the closing price quoted
on the Nasdaq National Market, as published in The Wall Street Journal on the
                                               -----------------------
date of determination of Fair Market Value. If the Common Stock is not traded on
the Nasdaq National Market, but is traded on an exchange or over-the-counter,
the Fair Market Value of one share of Common Stock shall be the closing price
quoted on the exchange on which the Common Stock is listed or the average of the
closing bid and asked prices of the Common Stock quoted in the Over-the-Counter
Market Summary, whichever is applicable, on the date of determination of Fair
Market Value. In all other cases, the Fair Market Value of one share of Common
Stock shall be determined in good faith by the Company's Board of Directors (the
"Board").

          (c)  Partial Exercise.  Upon any partial exercise or conversion, the
               -----------------
Company will issue to the Holder a new Warrant for the number of shares of
Common Stock as to which this Warrant was not exercised or converted.

          (d)  Fractional Shares.  No fractional shares of Common Stock shall be
               ------------------
issued upon any exercise or conversion of this Warrant. Instead of any
fractional share which would otherwise be issuable upon exercise or conversion,
the Company shall pay a cash amount in respect of each fractional share at a
price equal to an amount calculated by multiplying such

                                       2
<PAGE>

fractional share (calculated to the nearest 1/100th of a share) by the Fair
Market Value of a share of Common Stock on the date of exercise or conversion,
as applicable, minus the Purchase Price. Payment of such amount shall be made in
cash or by check payable to the order of the Holder at the time of delivery of
any certificate or certificates arising upon such exercise or conversion.

     (e) Taxes.  The Company will not be required to pay any tax imposed in
         ------
connection with any transfer involved in the issuance of a Warrant or a
certificate for shares of Common Stock in any name other than that of the Holder
hereof, and in such case, the Company will not be required to issue or deliver
any stock certificate or Warrant until such tax is paid.

          (f)  Transfer of Warrant.  Transfer of this Warrant to a third party
               --------------------
shall be effected by execution and delivery of the Notice of Assignment attached
hereto as Exhibit B and surrender of this Warrant for registration of transfer
          ---------
of this Warrant at the primary executive office of the Company, together with
funds sufficient to pay any applicable transfer tax.  Upon receipt of the duly
executed Notice of Assignment and the necessary transfer tax funds, if any, the
Company, at its expense, shall execute and deliver, in the name of the
designated transferee or transferees, one or more new Warrants representing the
right to purchase a like aggregate number of shares of Common Stock.

     2.   Antidilution Provisions.

          (a)  Reorganization, Reclassification or Recapitalization of the
               -----------------------------------------------------------
Company. In case of (i) a capital reorganization, reclassification or
-------
recapitalization of the Company's capital stock (other than in the cases
referred to in Section 2(c) hereof), (ii) the Company's consolidation or merger
with or into another corporation in which the Company is not the surviving
entity, or a merger in which the Company is the surviving entity but the shares
of the Company's capital stock outstanding immediately prior to the merger are
converted, by virtue of the merger, into other property, whether in the form of
securities, cash or otherwise, or (iii) the sale or transfer of all or
substantially all of the Company's assets, then, as part of such reorganization,
reclassification, recapitalization, merger, consolidation, sale or transfer,
lawful provision shall be made so that there shall thereafter be deliverable
upon the exercise of this Warrant or any portion thereof (in lieu of or in
addition to the number of shares of Common Stock theretofore deliverable, as
appropriate) and without payment of any additional consideration, the number of
shares of stock or other securities of property to which the holder of the
number of shares of Common Stock which would otherwise have been deliverable
upon the exercise or conversion of this Warrant or any portion thereof at the
time of such reorganization, reclassification, recapitalization, consolidation,
merger, sale or transfer would have been entitled to receive in such
reorganization, reclassification, recapitalization, consolidation, merger, sale
or transfer. This Section 2(a) shall apply to successive reorganizations,
reclassifications, recapitalizations, consolidations, mergers, sales and
transfers and to the stock or securities of any other corporation that are at
the time receivable upon the exercise or conversion of this Warrant or any
portion thereof. If the per share consideration payable to the Holder for shares
of Common Stock in connection with any transaction described in this Section
2(a) is in a form other than cash or marketable securities, then the value of
such consideration shall be determined in good faith by the Board.

                                       3
<PAGE>

          (b)  Splits and Combinations.  If the Company at any time or from time
               ------------------------
to time after the date of this Warrant subdivides any of its outstanding shares
of Common Stock into a greater number of shares, the Purchase Price in effect
immediately prior to such subdivision shall be proportionately reduced, and,
conversely, if the outstanding shares of Common Stock are combined into a
smaller number of shares, the Purchase Price in effect immediately prior to such
combination shall be proportionately increased.

          (c)  Reclassifications.  If the Company reclassifies or otherwise
               -----------------
changes any of the securities into which this Warrant may be convertible into
the same or a different number of securities of any other class or classes, this
Warrant shall thereafter be convertible into such number and kind of securities
as would have been issuable as the result of such change with respect to the
securities into which this Warrant was convertible immediately prior to such
reclassification or other change and the Purchase Price therefor shall be
appropriately adjusted.

          (d)  Liquidation; Dissolution.  If the Company shall dissolve,
               -------------------------
liquidate or wind up its affairs, the Holder shall have the right, but not the
obligation, to exercise this Warrant effective as of the date of such
dissolution, liquidation or winding up. If any such dissolution, liquidation or
winding up results in any cash distribution to the Holder in excess of the
aggregate Purchase Price for the shares of Common Stock for which this Warrant
is exercisable, then the Holder may, at its option, exercise this Warrant
without making payment of such aggregate Purchase Price and, in such case, the
Company shall, upon distribution to the Holder, consider such aggregate Purchase
Price to have been paid in full, and in making such settlement to the Holder,
shall deduct an amount equal to such aggregate Purchase Price from the amount
payable to the Holder.

          (e)  Adjustment Certificates.  Upon any adjustment of the Purchase
               ------------------------
Price or the number of shares of Common Stock issuable upon exercise or
conversion of this Warrant, a certificate, signed by (i) the Company's President
and Chief Financial Officer or (ii) any independent firm of certified public
accountants of recognized national standing the Company selects at its own
expense, setting forth in reasonable detail the events requiring the adjustment
and the method by which such adjustment was calculated, shall be mailed to the
Holder at the address set forth in Section 6 hereof and shall specify the
adjusted Purchase Price and the number of shares of Common Stock issuable upon
exercise or conversion of the Warrant after giving effect to the adjustment.

          (f)  No Impairment.  The Company shall not, by amendment of its
               --------------
Certificate of Incorporation or through any reorganization, recapitalization,
transfer of assets, consolidation, merger, dissolution, issue or sale of
securities or any other voluntary action, avoid or seek to avoid the observance
or performance of any of the terms to be observed or performed hereunder by the
Company, but shall at all times in good faith assist in the carrying out of all
provisions of this Section 2 and in the taking of all such action as may be
necessary or appropriate in order to protect the rights of the Holder against
impairment. The Company shall not be deemed to have avoided or to be seeking to
avoid the observance or performance of any of the terms to be

                                       4
<PAGE>

observed or performed hereunder by issuing securities after the Closing Date for
a consideration per share less than the Purchase Price then in effect.

          (g)  Application.  Except as otherwise provided herein, all
               ------------
subsections of this Section 2 are intended to operate independently of one
another. If an event occurs that requires the application of more than one
subsection, all applicable subsections shall be given independent effect.

     3.   Notices of Record Date.  In case (a) the Company takes a record of the
holders of the Common Stock for the purpose of entitling them to receive any
dividend or other distribution, or any right to subscribe for or purchase any
shares of stock of any class or any other securities;  (b) of any capital
reorganization of the Company, any reclassification of the capital stock of the
Company, any consolidation or merger of the Company with or into another
corporation, or any conveyance of all or substantially all of the assets of the
Company to another corporation; or (c) of any voluntary dissolution, liquidation
or winding-up of the Company; then, in each such case, the Company will mail or
cause to be mailed to each Holder of a Warrant at the time outstanding a notice
specifying, as the case may be, (i) the date on which a record is to be taken
for the purpose of such dividend, distribution or right, and stating the amount
and character of such dividend, distribution or right, or (ii) the date on which
such reorganization, reclassification, consolidation, merger, conveyance,
dissolution, liquidation or winding-up is to take place, and time, if any is to
be fixed, as of which the holders of record of Common Stock (or such other stock
or securities at the time receivable upon the exercise or conversion of the
Warrant) will be entitled to exchange their shares of Common Stock (or such
other stock or securities) for securities or other property deliverable upon
such reorganization, reclassification, consolidation, merger, conveyance,
dissolution, liquidation or winding-up, and, in the case of a reorganization,
consolidation, merger or conveyance, the fair market value of such securities or
other property as determined by the Board.  Such notice shall be mailed at least
ten days prior to the date specified therein.

     4.   Replacement of Warrant.  Upon receipt of evidence reasonably
satisfactory to the Company of the loss, theft, destruction or mutilation of
this Warrant and (in the case of loss, theft or destruction) upon delivery of an
indemnity agreement in such reasonable amount as the Company may determine, or
(in the case of mutilation) upon surrender and cancellation thereof, the Company
at its expense, will issue a replacement.

     5.   Transferability of Warrant; No Redemption.  This Warrant and all
rights hereunder are freely transferable by the Holder, subject to compliance
with applicable state and federal securities laws. This Warrant shall not be
redeemable by the Company, in whole or in part, at any time.

     6.   Notices.   All notices, instructions and other communications given
hereunder or in connection herewith shall be in writing. Any such notice,
instruction or communication shall be sent either (i) by certified mail, return
receipt requested, postage prepaid, (ii) via a reputable nationwide overnight
courier service or (iii) by facsimile (with "answer-back" confirmation), in

                                       5
<PAGE>

each case to the address set forth below. Any such notice, instruction or
communication shall be deemed to have been delivered upon receipt of
confirmation of delivery after it is sent by certified mail, return receipt
requested, postage prepaid, one business day after it is sent via a reputable
nationwide overnight courier service, or upon receipt of confirmation of
delivery of a facsimile.

If to the Company to:    NaviSite, Inc.
                         400 Minuteman Road
                         Andover, MA 01810
                         Attention:  General Counsel
                         Facsimile:  (978) 688-8100

With a copy to:          Hale and Dorr LLP
                         60 State Street
                         Boston, MA 02109
                         Attention: Mark G. Borden, Esq.
                         Facsimile: (617) 526-5000

If to the Holder to:     CMGI, Inc.
                         100 Brickstone Square
                         Andover, MA 01810
                         Attention: William Williams, II, Esq.
                         Facsimile: (978) 684-3601

With a copy to:          Skadden, Arps, Slate Meagher & Flom LLP
                         One Beacon Street
                         Boston, MA  02108
                         Attention:  David T. Brewster, Esq.
                         Facsimile:  (617) 573-4822

Either party may give any notice, instruction or communication in connection
with this Warrant using any other means (including personal delivery or ordinary
mail), but no such notice, instruction or communication shall be deemed to have
been delivered unless and until it is received by the party to whom it was sent.
Either party may change the address to which notices, instructions or
communications are to be delivered by giving the other party to this Warrant
notice thereof in the manner set forth in this Section 6.

     7.   Change; Waiver.  This Warrant except by agreement may not be changed,
amended or modified in writing signed by the Company and the Holder.

     8.   No Rights as Stockholder.  This Warrant does not entitle the Holder to
any voting rights or other rights as a stockholder of the Company prior to the
exercise of this Warrant.

                                       6
<PAGE>

     9.   Headings.  The headings in this Warrant are for purposes of reference
only and shall not be deemed to constitute a part hereof.

     10.  Governing Law.  This Warrant is delivered in the State of Delaware and
shall be construed in accordance with and governed by the laws of such state
without regard to its conflicts of laws rules.

Dated:  December 15, 2000

                                 NAVISITE, INC.

                                 By: /s/ Kenneth W. Hale as CFO
                                    ---------------------------------------

                                 Title: CFO
                                       ------------------------------------

                                       7
<PAGE>

                                                                       EXHIBIT A
                        NOTICE OF EXERCISE OR CONVERSION

TO:  NAVISITE, INC.

     1.   The undersigned hereby elects to receive __________ shares of Common
Stock of NaviSite, Inc., pursuant to the terms of the attached Warrant.

     2.   Method of Exercise (Please initial the applicable blank):

          ___  The undersigned elects to exercise the attached Warrant by means
               of a cash payment, and tenders herewith payment in full for the
               purchase price of the shares being purchased, together with all
               applicable transfer taxes, if any.

          ___  The undersigned elects to convert the attached Warrant by means
               of the conversion provisions of Section 2(b) of the Warrant.

     3.   Please issue a certificate or certificates representing said shares of
Common Stock in the name of the undersigned or in such other name as is
specified below:

                      ___________________________________
                                    (Name)
                      ___________________________________

                      ___________________________________
                                   (Address)

     4.   The undersigned represents that the aforesaid shares of Common Stock
are being acquired for the account of the undersigned for investment and not
with a view to, or for resale in connection with, the distribution thereof and
that the undersigned has no present intention of distributing or reselling such
shares.

          All capitalized terms used but not otherwise defined herein shall have
the meaning ascribed to such terms in the Warrant.

                      ___________________________________
                                 Name of Holder

                      ___________________________________
                       Signature of Authorized Signatory

                      ___________________________________
                              Print Name and Title

                      ___________________________________
                                     Date

                                       8
<PAGE>

                                                                       EXHIBIT B

                                ASSIGNMENT FORM

(To be executed only upon the assignment of the within Warrant)

     FOR VALUE RECEIVED, the undersigned registered Holder of the within Warrant
hereby sells, assigns and transfers unto _____________________, whose address is
___________________
all of the rights of the undersigned under the within Warrant, with respect to
shares of Common Stock (as defined within the Warrant) of NaviSite, Inc., and,
if such shares of Common Stock shall not include all the shares of Common Stock
issuable as provided in the within Warrant, that a new Warrant of like tenor for
the number of shares of Common Stock not being transferred hereunder be issued
in the name of and delivered to the undersigned, and does hereby irrevocably
constitute and appoint _________________ attorney to register such transfer on
the books of NaviSite, Inc. maintained for that purpose, with full power of
substitution in the premises.

Dated:________________

Signature Guaranteed

                            By:_______________________________________
                                 (Signature of Registered Holder)
                            Title:  __________________________________

NOTICE:        The signature to this Notice of Assignment must correspond with
               the name upon the face of the within Warrant in every particular,
               without alteration or enlargement or any change whatever.

               The signature to this Notice of Assignment must be guaranteed by
               a commercial bank or trust company in the United States or a
               member firm of the New York Stock Exchange.

                                       9

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