Document:

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         NEITHER THIS WARRANT NOR THE SHARES OF STOCK ISSUABLE UPON EXERCISE
         HEREOF HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
         AMENDED. NO SALE, TRANSFER OR OTHER DISPOSITION OF THIS WARRANT OR SAID
         SHARES MAY BE EFFECTED WITHOUT (I) AN EFFECTIVE REGISTRATION STATEMENT
         RELATED THERETO, (II) AN OPINION OF COUNSEL FOR THE HOLDER THAT SUCH
         REGISTRATION IS NOT REQUIRED OR (III) RECEIPT OF A NO-ACTION LETTER
         FROM THE SECURITIES AND EXCHANGE COMMISSION TO THE EFFECT THAT
         REGISTRATION UNDER THE ACT IS NOT REQUIRED.

                         Void after 5:00 p.m., Utah Time
                              on January ___, 2003

                                SENTO CORPORATION

                               WARRANT TO PURCHASE
                             SHARES OF COMMON STOCK

                           --------------------------

         This certifies that, for value received, ____________________ (the
"PURCHASER") or registered assigns (the Purchaser or such assignee, as
applicable, being referred to herein as the "HOLDER"), is entitled, subject to
the provisions of that certain Subscription Agreement, dated as of February 1,
2000 between the Company and Purchaser (the "SUBSCRIPTION AGREEMENT"), to
_______________ (___) warrants, each such warrant entitling the Holder to
purchase one (1) share of the common stock, par value $0.25 per share (the
"COMMON STOCK"), of Sento Corporation, a Utah corporation (the "COMPANY"), at a
price of Six and 25/100 Dollars ($6.25) per share (the "EXERCISE PRICE") (such
warrants and this certificate evidencing such warrants being referred to herein,
collectively, as this "WARRANT"). The number of shares of Common Stock to be
received upon the exercise of this Warrant (the "WARRANT SHARES") and the
Exercise Price may be adjusted from time to time as hereinafter set forth. This
Warrant is issued in connection with a 7% Convertible Subordinated Debenture,
dated as of January ____, 2000, issued by the Company to Purchaser in the
original principal amount of $__________________ (the "DEBENTURE").

         1.   EXERCISE OF WARRANT. Subject to the provisions of Section 2
below, this Warrant may be exercised in whole (but not in part) at any time
or from time to time on or after the date hereof, but in any event no later
than 5:00 p.m., Utah time, on January _____, 2003, or if such date is a day
on which federal or state-chartered banking institutions in Utah are
authorized by law to close, then on the next succeeding day which shall not
be such a day. Such exercise shall be effective upon presentation and
surrender to the Company at its principal office or at the office of its
stock transfer agent, if any, of this Warrant with the duly executed Notice
of Exercise form set forth on Exhibit A (attached hereto and made

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a part hereof by this reference) (the "NOTICE OF EXERCISE") indicating
whether such exercise is being made in accordance with Section 1(a) or 1(b)
below and the form of payment necessary to comply with the provisions of such
Section. The number of Warrant Shares which may be purchased upon exercise of
this Warrant shall initially be equal to the number of warrants granted by
this Warrant as identified above, which number may be adjusted, if at all, in
accordance with Section 7 below. The Company may require the purchaser to
execute such further documents and make certain representations and
warranties as the Company deems necessary to ensure compliance with
exemptions from applicable federal and state securities laws as required by
Section 2 below.

              (a)  CASH PAYMENT UPON EXERCISE. If the Notice of Exercise
specifies that the exercise of this Warrant is made pursuant to this Section
1(a), then the Notice of Exercise shall be accompanied by payment, in cash or
by certified or official bank check, payable to the order of the Company, in
the amount of the Exercise Price for the number of the Warrant Shares,
together with all taxes applicable upon such exercise.

              (b)  CASHLESS EXERCISE. If the Notice of Exercise specifies
that the exercise of this Warrant is made pursuant to this Section 1(b), then
the Company shall deliver to Holder, without payment by Holder of any
Exercise Price or any cash or other consideration, that number of Warrant
Shares computed using the following formula:

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

WHERE:                     X  =     the number of Warrant Shares to be issued
                                    to the Holder pursuant to the exercise of
                                    this Warrant pursuant to this Section 1(b);

                           Y  =     the number of Warrant Shares that may be
                                    purchased upon the exercise of this Warrant;

                           A  =     the Market Price (as defined in the
                                    Debenture) of one share of Common Stock; and

                           B  =     the Exercise Price per Warrant Share and
                                    the amount of taxes per Warrant Share
                                    payable upon the exercise of this Warrant or
                                    the issuance of the Warrant Shares pursuant
                                    to this Section 1(b) (assuming the full
                                    issuance of the Warrant Shares that may be
                                    purchased upon the exercise of this
                                    Warrant).

         2.   COMPLIANCE WITH SECURITIES LAWS. This Warrant may not be
exercised by the Holder unless at the time of exercise (i) a registration
statement registering the Warrant Shares upon such exercise is effective
under the Securities Act of 1933, as amended (and together with the rules and
regulations promulgated thereunder, collectively, the "SECURITIES ACT"), or
the transaction in which such Warrant Shares are to be issued is exempted
from the application of the registration requirements of the Securities Act,
and (ii) the Warrant Shares have been registered or qualified under any
applicable state securities laws or an exemption from registration or
qualification is available under such laws. The Holder may have

                                       2

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certain registration rights with respect to the Warrant Shares under the
Registration Rights Agreement dated as of _______________, 2000, between the
Purchaser and the Company (the "REGISTRATION RIGHTS AGREEMENT"), pursuant to
which the holder of Warrant Shares may, in certain limited circumstances,
obligate the Company to register or qualify such Warrant Shares under federal
or state securities laws. This Warrant may not be exercised so long as
Purchaser is in default under the representations, warranties or covenants of
this Warrant, the Debenture or the Subscription Agreement.

         3.   STOCK FULLY PAID; RESERVATION OF SHARES. All Warrant Shares
that may be issued upon the exercise of this Warrant shall, upon issuance, be
duly authorized, validly issued, fully paid and nonassessable, and free from
all taxes, liens and charges with respect to the issue thereof. The Company
hereby covenants and agrees that at all times during the period this Warrant
is exercisable it shall reserve from its authorized and unissued Common Stock
for issuance and delivery upon exercise of this Warrant such number of shares
of its Common Stock as shall be required for issuance and delivery upon
exercise of this Warrant. The Company agrees that its issuance of this
Warrant shall constitute full authority to its officers who are charged with
the duty of executing stock certificates to execute and issue the necessary
certificates for shares of Common Stock upon the exercise of this Warrant.

         4.   FRACTIONAL SHARES. No fractional shares or stock representing
fractional shares shall be issued upon the exercise of this Warrant. In lieu
of any fractional shares which would otherwise be issuable, the Company
shall, in its sole discretion, either (i) pay cash equal to the product of
such fraction multiplied by the fair market value of one share of Common
Stock on the date of exercise, as determined in good faith by the Company's
Board of Directors or (ii) issue the next largest whole number of Warrant
Shares.

         5.   TRANSFER, EXCHANGE, ASSIGNMENT OR LOSS OF WARRANT OR
CERTIFICATES.

              (a)  This Warrant may not be assigned or transferred except as
provided herein and in accordance with and subject to the provisions of the
Securities Act and any applicable state securities laws. Any purported
transfer or assignment made other than in accordance with this Section 5 and
Section 9 hereof shall be null and void and of no force and effect.

              (b)  This Warrant shall be transferable only upon the receipt
of an opinion of counsel satisfactory to the Company to the effect that (i)
the transferee is a person to whom the Warrant may be legally transferred
without registration under the Securities Act or any state securities laws;
and (ii) such transfer will not violate any applicable law or governmental
rule or regulation including, without limitation, any applicable federal or
state securities law. Prior to any transfer or assignment of this Warrant,
the assignor or transferor shall reimburse the Company for its reasonable
expenses, including attorneys' fees, incurred in connection with the transfer
or assignment.

              (c)  Any assignment permitted hereunder shall be made by
surrender of this Warrant to the Company at its principal office with the
duly executed Assignment Form set forth on Exhibit B attached hereto and made
a part hereof by this reference and funds sufficient to pay any transfer tax.
In such event, the Company shall, without charge, execute and deliver a new
Warrant in the name of the assignee named in such Assignment Form, and this
Warrant shall promptly be cancelled. This Warrant may be divided or combined
with other Warrants which carry the same rights upon presentation thereof at
the principal office of the Company together with a written notice signed by
the Holder thereof,

                                       3

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specifying the names and denominations in which new Warrants are to be
issued. The terms "Warrant" and "Warrants" as used herein include any Warrants
in substitution for or replacement of this Warrant, or into which this Warrant
may be divided or exchanged.

              (d)  Upon receipt by the Company of evidence satisfactory to it
of the loss, theft, destruction or mutilation of this Warrant or any stock
certificate representing Warrant Shares issued upon the exercise hereof and,
in the case of any such loss, theft or destruction, upon receipt of an
indemnity reasonably satisfactory to the Company, and, in the case of any
such mutilation, upon surrender and cancellation of this Warrant or such
stock certificate, the Company will execute and deliver a new Warrant or
stock certificate of like tenor and date, and any such lost, stolen,
destroyed or mutilated Warrant or stock certificate shall thereupon become
void.

         Each Holder of this Warrant, the Warrant Shares or any other
security issued or issuable upon exercise of this Warrant shall indemnify and
hold harmless the Company, its directors and officers, and each person, if
any, who controls the Company, against any losses, claims, damages or
liabilities, joint or several, to which the Company or any such director,
officer or any such person may become subject under the Securities Act or any
statute or common law, insofar as such losses, claims, damages or
liabilities, or actions in respect thereof, arise out of or are based upon
the disposition by such Holder of the Warrant, the Warrant Shares or other
such securities in violation of the terms of this Warrant.

         6.   RIGHTS OF THE HOLDER. The Holder shall not, by virtue hereof,
be entitled to any rights of a shareholder in the Company, either at law or
equity, and the rights of the Holder by virtue hereof are limited to those
expressed in this Warrant and are not enforceable against the Company except
to the extent set forth herein.

         7.   ADJUSTMENT OF EXERCISE PRICE AND NUMBER OF SHARES. The number
and kind of securities issuable upon the exercise of this Warrant and the
Exercise Price of such securities shall be subject to adjustment from time to
time upon the happening of certain events as follows:

              (a)  SUBDIVISION OR COMBINATION OF COMMON Stock. If the Company
at any time subdivides (by any stock split, stock dividend or otherwise) one
or more classes of its outstanding shares of Common Stock into a greater
number of shares, or combines by reverse stock split or otherwise) one or
more classes of its outstanding shares of Common Stock into a smaller number
of shares, the number of Warrant Shares purchasable upon exercise of this
Warrant immediately prior thereto shall be adjusted so that the Holder of
this Warrant shall be entitled to receive the kind and number of Warrant
Shares or other securities of the Company which it would have owned or have
been entitled to receive after the happening of any of the events described
above had this Warrant been exercised immediately prior to the happening of
such event or any record date with respect thereto. If the Holder is entitled
to receive shares of two or more classes of capital stock of the Company
pursuant to the foregoing upon exercise of the Warrant, the Company shall
determine the allocation of the adjusted Exercise Price between the classes
of capital stock. After such allocation, the exercise privilege and the
Exercise Price of each class of capital stock shall thereafter be subject to
adjustment on terms comparable to those applicable to Common Stock in this
Section. An adjustment made pursuant to this paragraph (a) shall become
effective immediately after the effective date of such event retroactive to
the record date, if any, for such event. Such adjustment shall be made
successively whenever such a payment, subdivision, combination or
reclassification is made.

                                       4

<PAGE>

              (b)  ADJUSTMENT IN EXERCISE PRICE. Except as set forth in
Section 7(c) below, whenever the number of Warrant Shares purchasable upon
the exercise of each Warrant is adjusted as provided in this Section, the
Exercise Price payable upon exercise of each Warrant shall be adjusted by
multiplying such Exercise Price immediately prior to such adjustment by a
fraction, of which the numerator shall be the number of Warrant Shares
purchasable upon the exercise of each Warrant immediately prior to such
adjustment, and of which the denominator shall be the number of Warrant
Shares purchasable immediately thereafter.

              (c)  RESET OF EXERCISE PRICE. If the Market Price (as defined
in the Debenture) of the Common Stock does not equal or exceed $6.00 per
share for any period of 20 consecutive trading days occurring during the
period between the date set forth on the signature page hereof and December
31, 2000, then the Exercise Price shall be equal to $5.00 from and after
December 31, 2000.

         8.   OFFICER'S CERTIFICATE. Whenever the Exercise Price or the
number of Warrant Shares issuable on exercise of this Warrant shall be
adjusted as required by the provisions of Section 7 hereof, the Company shall
forthwith file with its Secretary or an Assistant Secretary at its principal
office, and with its stock transfer agent, if any, an officer's certificate
showing the adjusted Exercise Price and number of Warrant Shares determined
as herein provided and setting forth in reasonable detail the facts requiring
such adjustment. Each such officer's certificate shall be made available at
all reasonable times for inspection by the Holder, and the Company shall,
forthwith after each such adjustment, deliver a copy of such certificate to
the Holder.

         9.   TRANSFER TO COMPLY WITH THE SECURITIES ACT.

              (a)  This Warrant and the Warrant Shares or any other security
issued or issuable upon exercise of this Warrant may not be sold, transferred
or otherwise disposed of except (i) as contemplated by the Registration
Rights Agreement or (ii) to a person who, in the opinion of counsel
reasonably satisfactory to the Company, is a person to whom this Warrant or
such Warrant Shares may legally be transferred pursuant to Section 5 hereof
without registration and without the delivery of a current prospectus under
the Securities Act with respect thereto and then only against receipt of an
agreement of such person to comply with the provisions of this Section 9 with
respect to any resale or other disposition of such securities unless, in the
opinion of such counsel, such agreement is not required.

              (b)  The Holder, by acceptance of this Warrant, agrees that the
Warrant Shares to be issued upon exercise hereof are being acquired for the
account of the Holder for investment and not with a view to, or for resale in
connection with, the distribution thereof and that the Holder will not offer,
sell or otherwise dispose of such Warrant Shares except under circumstances
which will not result in a violation of the Securities Act and all applicable
state securities laws. The Holder represents that the Holder has no present
intention of distributing or reselling the Warrant Shares.

              (c)  The Company may cause the following legend, or one of
similar substance, to be set forth on each certificate representing Warrant
Shares or any other security issued or issuable upon exercise of this
Warrant, unless counsel for the Company is of the opinion as to any such
certificate that such legend is unnecessary:

                                       5

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            THE SECURITIES OF THE COMPANY EVIDENCED BY THIS CERTIFICATE
            HAVE NOT BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE
            COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN
            RELIANCE UPON EXEMPTIONS FROM THE REGISTRATION REQUIREMENTS OF
            THE SECURITIES ACT OF 1933, AS AMENDED, AND VARIOUS APPLICABLE
            STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE SOLD,
            TRANSFERRED, PLEDGED OR ASSIGNED OR A SECURITY INTEREST
            CREATED THEREIN, UNLESS THE PURCHASE, TRANSFER, ASSIGNMENT,
            PLEDGE OR GRANT OF SUCH SECURITY INTEREST COMPLIES WITH ALL
            STATE AND FEDERAL SECURITIES LAWS (I.E., SUCH SHARES OF COMMON
            STOCK ARE REGISTERED UNDER SUCH LAWS OR AN EXEMPTION FROM
            REGISTRATION IS AVAILABLE THEREUNDER) AND UNLESS THE SELLER,
            TRANSFEROR, ASSIGNOR, PLEDGOR OR GRANTOR OF SUCH SECURITY
            INTEREST PROVIDES AN OPINION OF COUNSEL REASONABLY
            SATISFACTORY TO THE COMPANY THAT THE TRANSACTION CONTEMPLATED
            WOULD NOT BE IN VIOLATION OF THE SECURITIES ACT OF 1933, AS
            AMENDED, OR ANY APPLICABLE STATE SECURITIES LAWS.
            TRANSFERABILITY OF THE SECURITIES IS THEREFORE LIMITED AND
            INVESTORS MUST BEAR THE ECONOMIC RISK OF THEIR INVESTMENT FOR
            AN INDEFINITE PERIOD OF TIME.

         10.  GOVERNING LAW. This Warrant shall be governed by, and construed
in accordance with, the laws of the State of Utah applicable to contracts
entered into and to be performed wholly within such State.

         11.  MODIFICATION AND WAIVER. This Warrant and any provision hereof
may be modified, amended, waived or discharged only by an instrument in
writing signed by the party against which enforcement of the same is sought.

         12.  NOTICE. Notices and other communications to be given to the
Holder shall be delivered by hand or mailed, postage prepaid, to such address
as the Holder shall have designated by written notice to the Company as
provided in this Section. Notices or other communications to the Company
shall be deemed to have been sufficiently given if delivered by hand or
mailed postage prepaid to the Company at 808 East Utah Valley Drive, American
Fork, Utah 84003, or such other address as the Company shall have designated
by written notice to the Holder as provided in this Section. Notice by mail
shall be deemed given when deposited in the United States mail, postage
prepaid, as herein provided.

         13.  CONSTRUCTION. The descriptive headings of the several
paragraphs and sections of this Warrant are inserted for convenience only and
do not constitute a part of this Warrant. Unless otherwise indicated,
references to sections shall be construed as references to the corresponding
Sections of this Warrant.

                                       6

<PAGE>

         IN WITNESS WHEREOF, the Company has executed this Warrant effective as
of the _____ day of _____________, 2000.

                                       SENTO CORPORATION, a Utah corporation

                                       By:
                                          -----------------------------------
                                       Its:
                                           ----------------------------------

                                       7

<PAGE>

                                    EXHIBIT A

                               NOTICE OF EXERCISE

TO:     SENTO CORPORATION (the "COMPANY"):

        1.    The undersigned holder of the attached warrant (the "WARRANT")
hereby elects to purchase the Warrant Shares (as defined in the Warrant)
pursuant to (Select (a) or (b) below):

_______       (a) Section 1(a) of the Warrant and the terms and conditions of
Initial       the Warrant and tenders here with payment of the purchase price
Here          of such shares in full; or

_______       (b) Section 1(b) of the Warrant and the terms and conditions of
Initial       the Warrant.
Here

        2.     Please issue a certificate or certificates representing the
Warrant Shares in the name of the undersigned.

---------------
    (DATE)

                                          -------------------------------------
                                          (SIGNATURE)

                                          -------------------------------------
                                          (PRINT OR TYPE NAME)

                                       8

<PAGE>

                                    EXHIBIT B

                                 ASSIGNMENT FORM

                                                     Dated: ____________________

        FOR VALUE RECEIVED, _____________________ hereby sells, assigns, and
transfers unto ______________________ (please type or print)
______________________________ (address) the right to purchase Common Stock
represented by the warrant attached hereto to the extent of _____________ shares
as to which such right is exercisable and does hereby irrevocably constitute and
appoint the Sento Corporation (the "COMPANY") and/or its transfer agent as
attorney to transfer the same on the books of the Company with full power of
substitution in the premises.

                                        ---------------------------------------
                                        (SIGNATURE)

                                       9<PAGE>

                           LOAN MODIFICATION AGREEMENT

BETWEEN: Sento Corporation, Sento Training Corporation, Sento Consulting
         Corporation and Sento Technical Services Corporation (jointly and
         severally, the "Borrower"), whose address is 808 East Utah Valley
         Drive, American Fork, Utah 84003;

AND:     Silicon Valley Bank ("Bank"), whose address is 3003 Tasman Drive, Santa
         Clara, California 95054;

DATE:    April _____, 2000

     This Loan Modification Agreement is entered into on the above date by
Borrower and Bank.

         1. BACKGROUND. Borrower entered into an Amended and Restated Loan and
Security Agreement with Bank on December 22, 1999 (as amended and modified from
time to time, the "Loan Agreement"). Capitalized terms used in this Loan
Modification Agreement shall, unless otherwise defined in this Agreement, have
the meaning given to such terms in the Loan Agreement.

         Bank and Borrower are entering into this Agreement to state the terms
and conditions of certain modifications to the Loan Agreement, as amended prior
to the date of this Agreement.

         2. MODIFICATIONS TO LOAN AGREEMENT.

                  2.1 Borrower acknowledges and agrees that all Obligations,
including without limitation Borrower's obligation to repay amounts advanced by
Bank to Borrower on the terms of the Loan Agreement as modified by this Loan
Modification Agreement, are secured by all liens and security interests granted
by Borrower to Bank in the Loan Agreement.

                  2.2 Section 13.1 of the Loan Agreement is hereby amended to
substitute the following definitions for those currently set forth in the Loan
Agreement:

         "BORROWING BASE" is 80% of Eligible Accounts.

         "COMMITTED REVOLVING LINE" is a Credit Extension of up to $3,000,000.

         "ELIGIBLE ACCOUNTS" has the meaning given in the Loan Agreement, except
that subsection (d) is hereby replaced with the following:

                  (a)    Accounts for an Account Debtor, including affiliates,
                         whose total obligations to Borrower exceed 25% of all
                         Accounts for the amounts that exceed that percentage,
                         except for Gateway Corporation (US) and Network
                         Associates (US), whose accounts shall not exceed 50%
                         of all Accounts, unless Bank approves in writing;

<PAGE>

         "ELIGIBLE FOREIGN ACCOUNTS" are Accounts for which the account debtor
does not have its principal place of business in the United States but are: (1)
covered by credit insurance satisfactory to Bank, less any deductible; or (2)
supported by letter(s) of credit acceptable to Bank; or (3) that Bank approves
in writing, which as of the date hereof consists of Network Associates Europe
and Gateway Europe, subject to the limitations applicable to all "Eligible
Accounts."

         "REVOLVING MATURITY DATE" is April 15, 2002.

                  2.3  Section 2.1.1(b) is hereby amended as follows:

                         The applicable interest rate is reduced from a per
                         annum rate of 2.00 percentage points above the Prime
                         Rate to 1.25 percentage points above the Prime Rate.

                  2.4  Section 2.1.2 of the Loan Agreement is hereby amended
                       as follows:

                         The limitation on the face amount of outstanding
                         letters of credit (including drawn by unreimbursed
                         Letters of Credit and any Letter of Credit Reserve)
                         is increased from not more than $2,000,000 to not
                         more than $3,000,000.

                  2.5  Section 13.1 of the Loan Agreement is hereby amended to
add the following definitions:

         "TERM LOAN ADVANCE" is an advance or advances under the Term Loan
Commitment.

         "TERM LOAN BORROWING BASE", for each advance under the Term Loan
Commitment, is equivalent to 100% of the invoice amount of equipment purchased
within the previous 90 days, plus charges for taxes, shipping, warranty charges,
freight discounts and installation ("Soft Costs"). However, not more than 15% of
the amount of each advance under this facility may be used to fund Soft Costs.

         "TERM LOAN COMMITMENT" is equal to Term Loan Advances in an aggregate
amount of up to $500,000 pursuant to Section 2.1.5 herein.

         "TERM LOAN MATURITY DATE" is defined in Section 2.1.5.

         "TERM PERIOD" means that period beginning at the end of the Advance
Period and ending on the Term Loan Maturity Date during which the principal
balance outstanding under the Term Loan Commitment shall be fully amortized.

                                       2
<PAGE>

                  2.6 Section 2 of the Loan Agreement is hereby amended to
add the following Section 2.1.5:

         2.1.5    TERM LOAN ADVANCES.

                  (a)    Bank will make Term Loan Advances not exceeding the
                         lesser of (A) the Term Loan Commitment or (B) the
                         Term Loan Borrowing Base. Amounts borrowed under this
                         Section once repaid may not be reborrowed during the
                         term of this Agreement. There is no prepayment
                         penalty associated with this facility. Bank shall
                         make Term Loan Advances under the Term Loan
                         Commitment, in accordance with the conditions
                         described above, during the period beginning with the
                         date of this Agreement, and ending on October 15,
                         2000. Each Term Loan Advance shall amortize
                         separately over thirty-six (36) months, with
                         thirty-six (36) equal monthly payments of principal,
                         plus accrued interest. The first monthly payment of
                         principal and interest shall be due and payable on
                         the first day of the first full month following the
                         date of the Term Loan Advance.

                  (b)    The interest rate applicable to the Committed Term
                         Loan shall be a rate equal to the Prime Rate in
                         effect from time to time, plus 1.50%. Interest
                         calculations shall be made on the basis of a 360-day
                         year and the actual number of days elapsed. The
                         interest rate shall change on each date there is a
                         change in the Bank's Prime Rate.

                  (c)    Borrower shall pay to Bank a fee of $2,500 for the
                         Committed Term Loan, which shall be fully earned and
                         due and payable as of the date of this Agreement.

                  2.7 Loan Fee. In addition to the fee for the Committed Term
Loan fee above, Borrower shall pay a fee of $30,000 for renewal and extension of
the Committed Revolving Line, which shall be fully earned and due and payable as
of the date of this Agreement. In addition, Borrower shall reimburse Bank for
all out-of-pocket expenses associated with this Agreement, including legal fees.

                  2.8 Sections 6.2(a), (b) and (d) of the Loan Agreement are
hereby amended as follows:

                         (a) Borrower will deliver to Bank: (i) as soon as
                         available, but no later than 30 days after the last
                         day of each month, a company prepared consolidated
                         balance sheet and income statement for Sento
                         Corporation covering Borrowers' consolidated
                         operations during the period, in a form acceptable to
                         Bank and certified by a Responsible Officer; (ii)
                         within 5 days of filing, copies of all statements,
                         reports and notices made available to Borrower's
                         security holders or to any holders of Subordinated
                         Debt and all reports Form 10-K and 10-Q with the
                         Securities and Exchange Commission; (iii) a prompt
                         report of any legal actions pending or threatened
                         against Borrower or any Subsidiary that could result
                         in

                                       3
<PAGE>

                         damages or costs to Borrower or any Subsidiary of
                         $100,000 or more; and (iv) budgets, sales
                         projections, operating plans or other financial
                         information Bank reasonably requests.

                         (b)    Borrower will deliver to Bank within 20 days
                                of the last day of each month a Borrowing
                                Base Certificate signed by a Responsible
                                Officer in the form of Exhibit C, with aged
                                listings of accounts receivable and accounts
                                payable.

                         (d)    Bank has the right to audit Borrower's
                                Accounts at Borrower's expense, but the
                                audits will be conducted no more often than
                                once every 12 months unless an Event of
                                Default has occurred and is continuing.

                  2.9 Section 6.6 of the Loan Agreement is hereby amended to (i)
modify the Quick Ratio covenant as set forth below, (ii) delete the Debt/Net
Worth Ratio, Tangible Net Worth and Maximum Net Losses covenants, and (iii) add
the Profitability and Debt Service Coverage covenants as set forth below.

                  Borrower shall maintain (a) and (b) as of the last day of each
                  month, and (c) as of the last day of each quarter:

                  (a)    QUICK RATIO. A ratio of Quick Assets to Current
                         Liabilities of at least 1.50:1.00.

                  (b)    PROFITABILITY. Borrower shall not incur a loss (as
                         defined below) for any two consecutive months, and
                         shall not incur an aggregate loss for any fiscal
                         quarter. For purposes of this covenant, "loss" means
                         net income after taxes of less than $0.00, as
                         reported on Borrower's consolidated financial
                         statement.

                  (c)    DEBT SERVICE COVERAGE RATIO. A Debt Service Coverage
                         Ratio of not less than 1.50:100. For purposes of this
                         covenant, "Debt Service Coverage Ratio" means
                         earnings before interest, taxes, depreciation and
                         amortization for the quarter, annualized (multiplied
                         by four)("EBITDA"), divided by the current maturities
                         of long-term debt ("CMLTD") plus interest for the
                         quarter, annualized (multiplied by four).

         3. CONDITIONS PRECEDENT. This Loan Modification Agreement shall not
take effect until Borrower delivers to Bank a Certified Resolution of Borrower
and such other documents and fees as Bank shall reasonably require to give
effect to the terms of this Loan Modification Agreement.

                                       4
<PAGE>

         4. NO OTHER MODIFICATIONS. Except as expressly modified by this Loan
Modification Agreement, the terms of the Loan Agreement, as amended prior to
the date of this Loan Modification Agreement, shall remain unchanged and in
full force and effect. Bank's agreement to modify the Loan Agreement pursuant
to this Loan Modification Agreement shall not obligate Bank to make any
future modifications to the Loan Agreement or any other loan document.
Nothing in this Loan Modification Agreement shall constitute a satisfaction
of any indebtedness of any Borrower to Bank. It is the intention of Bank and
Borrower to retain as liable parties all makers and endorsers of the Loan
Agreement or any other loan document. No maker, endorser, or guarantor shall
be released by virtue of this Loan Modification Agreement. The terms of this
paragraph shall apply not only to this Loan Modification Agreement, but also
to all subsequent loan modification agreements.

         5. REPRESENTATIONS AND WARRANTIES.

                  5.1  The Borrower represents and warrants to Bank that the
execution, delivery and performance of this Agreement are within the Borrower's
corporate powers, and have been duly authorized and are not in contravention of
law or the terms of the Borrower's articles of incorporation, bylaws or of any
undertaking to which the Borrower is a party or by which it is bound.

                  5.2  The Borrower understands and agrees that in entering
into this Agreement, Bank is relying upon the Borrower's representations,
warranties and agreements as set forth in the Loan Agreement and other loan
documents. Borrower hereby reaffirms all representations and warranties in
the Loan Agreement, all of which are true as of the date of this Agreement.

                                       5
<PAGE>

         6. STATUTORY NOTICE. UNDER OREGON LAW, MOST AGREEMENTS, PROMISES AND
COMMITMENTS MADE BY BANK AFTER OCTOBER 3, 1989, CONCERNING LOANS AND OTHER
CREDIT EXTENSIONS WHICH ARE NOT FOR PERSONAL, FAMILY OR HOUSEHOLD PURPOSES OR
SECURED SOLELY BY THE BORROWER'S RESIDENCE MUST BE IN WRITING, EXPRESS
CONSIDERATION AND BE SIGNED BY BANK TO BE ENFORCEABLE.

BANK:                                     BORROWER:

SILICON VALLEY BANK                       SENTO CORPORATION

By:                                       By:
       ------------------------------            ------------------------------
Name:                                     Name:
       ------------------------------            ------------------------------
Title:                                    Title:
       ------------------------------            ------------------------------

                                          SENTO TRAINING CORPORATION

                                          By:
                                                 ------------------------------
                                          Name:
                                                 ------------------------------
                                          Title:
                                                 ------------------------------

                                          SENTO CONSULTING CORPORATION

                                          By:
                                                 ------------------------------
                                          Name:
                                                 ------------------------------
                                          Title:
                                                 ------------------------------

                                          SENTO TECHNICAL SERVICES
                                          CORPORATION

                                          By:
                                                 ------------------------------
                                          Name:
                                                 ------------------------------
                                          Title:
                                                 ------------------------------

                                       6

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