Document:

ATTACHMENT
      TO THE 

    CERTIFICATE
      OF DESIGNATION OF 

    SERIES
      A
      CONVERTIBLE PREFERRED STOCK

    OF

    SENTRA
      CONSULTING CORP.

    

    It
      is
      hereby certified that:

    

    a) The
      name
      of the corporation (hereinafter called the “Company) is Sentra Consulting
      Corp.

    

    b) The
      articles of incorporation of the Company authorizes issuance of 10,000,000
      shares of preferred stock, par value $0.001 per share, and expressly vests
      in
      the Board of Directors of the Company the authority provided therein to issue
      any or all of said shares in one or more series and by resolution or
      resolutions, with each such series to have such designation, relative rights,
      preferences or limitations, as shall be stated and expressed in the resolution
      or resolutions providing for the issue of such series adopted by the Board
      of
      Directors of the Company.

    

    c) The
      Board
      of Directors of the Company, pursuant to the authority expressly vested in
      it as
      aforesaid, has adopted the following resolutions creating a Series A issue
      of
      convertible Preferred Stock:

    

    RESOLVED,
      that there be and hereby is authorized and created a series of preferred stock,
      hereby designated as the Series A Convertible Preferred Stock, which shall
      have
      the voting powers, designations, preferences and relative participating,
      optional or other rights, if any, or the qualifications, limitations, or
      restrictions, set forth in such articles of incorporation and in addition
      thereto, those following:

    

    1. Designation
      and Amount.
      The
      preferred stock subject hereof shall be designated Series A Convertible
      Preferred Stock (“Series A Preferred”), and the number of shares constituting
      Series A Preferred shall be three thousand (3,000). No other shares of preferred
      stock shall be designated as Series A Preferred. 

    

    2. Dividends.
      Dividends may be paid on the Series A Preferred as and when declared by the
      Board of Directors. The dividends shall be distributed among the holders of
      the
      Series A Preferred and the Company’s common stock, par value $0.001 (the “Common
      Stock”), pro rata in proportion to the total number of shares of Common Stock
      held by each holder (assuming the conversion into Common Stock of all
      outstanding shares of Series A Preferred). 

    

    3. Conversion.
      The
      holders of the Series A Preferred shall have conversion rights as follows (the
      “Conversion Rights”):

    

    
      
         

      

      
         

        
          

        

      

      
         

      

       

    

    (a) Right
      to Convert.
      At the
      option of the holder thereof, at any time and from time to time, each share
      of
      Series A Preferred shall be convertible into such number of fully paid and
      non-assessable shares of Common Stock as is determined by dividing the Original
      Issue Price (as defined below) by the lower of (i) a conversion price of $0.50
      per share as adjusted as provided herein (the “Conversion Price”), or (ii) the
      daily volume weighted average market price of the Common Stock as quoted by
      Bloomberg, LP for the 30 trading days immediately preceding the Conversion
      Date
      (as defined below) less a 10% discount thereof, provided,
      however,
      that
      under no circumstances shall said number be reduced to less than $0.20 per
      share. The Original Issue Price for each share of Series A Preferred shall
      be
      one thousand dollars ($1,000) per share.

    

    Notwithstanding
      anything contained herein to the contrary, the holder shall not be entitled
      to
      convert any Series A Preferred until the 90th
      day
      after the issuance date of the Series A Preferred.

    

    (b) Mechanics
      of Conversion. Before
      any holder of Series A Preferred shall be entitled to convert the same into
      shares of Common Stock, such holder shall surrender the certificate or
      certificates therefore, duly endorsed, at the office of the Company or of any
      transfer agent for the Series A Preferred, and shall give written notice to
      the
      Company at its principal corporate office, of the election to convert the same
      and shall state therein the name or names in which the certificate or
      certificates for shares of Common Stock are to be issued. The Company shall,
      as
      soon as practicable thereafter, issue and deliver at such office to such holder
      of Series A Preferred, or to the nominee or nominees of such holder, a
      certificate or certificates for the number of shares of Common Stock to which
      such holder shall be entitled as aforesaid. Such conversion shall be deemed
      to
      have been made immediately prior to the close of business on the date of such
      surrender of the shares of Series A Preferred to be converted (the “Conversion
      Date”), and the person or persons entitled to receive the shares of Common Stock
      issuable upon such conversion shall be treated for all purposed as the record
      holder or holders of such shares of Common Stock as of such date. All
      shares of Series A Preferred which shall have been surrendered for conversion
      as
      herein provided shall no longer be deemed to be outstanding and all rights
      with
      respect to such shares, including the rights, if any, to receive notices and
      to
      vote, shall immediately cease and terminate on the Conversion Date, except
      only
      the right of the holders thereof to receive shares of Common Stock in exchange
      therefor. 

     

    (c) Conversion
      Price Adjustments of Series A Preferred for Certain Splits and
      Combinations.
      The
      Conversion Price of the Series A Preferred shall be subject from time to time
      as
      follows:

    

    (i) Stock
      Splits, Etc.
      In the
      event the Company should at any time or from time to time after the date upon
      which any shares of the Series A Preferred were first issued (the “Purchase
      Date”) fix a record date for the effectuation of a split or subdivision of the
      outstanding shares of Common Stock or for the determination of the outstanding
      shares of Common Stock entitled to receive a dividend or other distribution
      payable in additional shares of Common Stock without payment of any
      consideration by such holder for the additional shares of Common Stock, then,
      as
      of such record date (or the date of such dividend, distribution, split or
      subdivision if no record date is fixed), the Conversion Price in effect
      immediately prior to such split, subdivision, dividend or other distribution,
      as
      the case may be, shall be adjusted appropriately. 

    

    
      
         

      

      
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    (ii) Other
      Distributions.
      In the
      event the Company shall declare a distribution payable in securities of other
      persons, evidences of indebtedness issued by the Company to other persons,
      assets (excluding cash dividends) or options or rights not referred to in
      subsection 3(c)(i), then, in each such case for the purpose of this subsection
      (ii), the holders of the Series A Preferred shall be entitled to a proportionate
      share of any such distribution as though they were the holders of the number
      of
      shares of Common Stock of the Company into which their shares of Series A
      Preferred are convertible as of the record date fixed for the determination
      of
      the holders of Common Stock of the Company entitled to receive such
      distribution.

    

    (iii) Recapitalizations.
      In the
      event there shall be a recapitalization of the Common Stock (other than a
      subdivision, combination or merger or sale of assets transaction provided for
      elsewhere in Section 3), provision shall be made so that the holders of the
      Series A Preferred shall thereafter be entitled to receive upon conversion
      of
      the Series A Preferred the number of shares of stock or other securities or
      property of the Company or otherwise, which a holder of Common Stock deliverable
      upon conversion immediately prior to such recapitalization would have been
      entitled to receive on such recapitalization. In any such case, appropriate
      adjustment shall be made in the application of the provisions of this Section
      3
      with respect to the rights of the holders of the Series A Preferred after the
      recapitalization to the end that the provisions of this Section 3 (including
      adjustment of the Conversion Price then in effect and the number of shares
      purchasable upon conversion of the Series A Preferred) shall be applicable
      after
      that event as nearly equivalently as may be practicable.

    

    (d) Adjustment
      of Conversion Price Upon Issuance of Additional Shares of Common
      Stock. In
      the
      event that the Company shall issue Additional Shares of Common Stock (as defined
      below) without consideration or for a consideration per share less than the
      applicable Conversion Price in effect on the date of and immediately prior
      to
      such issue, then and in such event such Conversion Price shall be reduced,
      concurrently with such issue, to such issuance price, which thereafter shall
      be
      the Conversion Price, provided, however,
      that in
      no event shall the Conversion Price shall less than $0.20 per share. No
      adjustment in the Conversion Price shall be made in respect of the issuance
      of
      Additional Shares of Common Stock unless the consideration per share for an
      Additional Share of Common Stock issued or deemed to be issued by the Company
      is
      less than the Conversion Price in effect on the date of, and immediately prior
      to such issue.

    

    (i) Definition
      of Additional Shares of Common Stock.
      Additional Shares of Common Stock shall mean all shares of Common Stock issued
      (or deemed to be issued pursuant to Section 3(d)(ii)) by the Company after
      the
      Purchase Date, other than shares of Common Stock issued, issuable or, deemed
      to
      be issued:

    

    
      
         

      

      
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    1)
      upon
      conversion of shares of the Series A Preferred;

     

    2)
      to
      officers, directors, or employees of, or consultants to, the Company pursuant
      to
      stock grant, option plan or other stock incentive program or arrangement
      approved by the Board of Directors for employees, officers, directors or
      consultants of the Company;

     

    3)
      as a
      dividend or distribution on the Series A Preferred;

     

    4)
      in
      connection with any transaction for which adjustment is made pursuant to Section
      3 hereof;

     

    5)
      securities of the Company issued to a Strategic Investor. As used herein, the
      term “Strategic Investor” shall mean that a majority of the Company’s Board of
      Directors determines that such investor is a strategic investor; and

     

    6)
      securities of the Company issued pursuant to an offering to all of the then
      current stockholders of the Company pro-rata to the number of shares of the
      Company held by such stockholders (assuming the conversion into Common Stock
      of
      all the then outstanding shares of Series A Preferred). 

    

    (ii) Options
      and Convertible Securities.
      In the
      event that the Company at any time after the Purchase Date shall issue any
      rights, options or warrants to subscribe for, purchase or otherwise acquire
      Common Stock (“Options”) or any evidences of indebtedness, preferred stock or
      other securities convertible into or exchangeable for Common Stock (“Convertible
      Securities”) or shall fix a record date for the determination of holders of any
      class of securities entitled to receive any such Options or Convertible
      Securities and the exercise or conversion price of said Options or Convertible
      Securities is less than the Conversion Price, then the issuance of such Options
      or Convertible Securities shall be deemed to be Additional Shares of Common
      Stock issued as of the time of such issue or, in case such a record date shall
      have been fixed, as of the close of business on such record date; provided,
      however,
      that in
      any such case in which Additional Shares of Common Stock are deemed to be
      issued:

    

    1) the
      aggregate maximum number of shares of Common Stock deliverable upon exercise
      of
      such Options or Convertible Securities shall be deemed to have been issued
      for a
      consideration equal to the consideration received by the Company for the
      issuance of such Options or Convertible Securities as the case may be, plus
      the
      exercise price provided for in such Options or Convertible Securities for the
      Common Stock covered thereby;

    

    2) no
      further adjustment in the Conversion Price shall be made upon the subsequent
      issue of Convertible Securities or shares of Common Stock upon the exercise
      of
      such Options or conversion or exchange of such Convertible Securities, in each
      case, pursuant to their respective terms;

    

    
      
         

      

      
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    3) if
      such
      Options or Convertible Securities by their terms provide, with the passage
      of
      time or otherwise, for any increase in the consideration payable to the Company,
      or decrease in the number of shares of Common Stock issuable, upon the exercise,
      conversion or exchange thereof, the Conversion Price computed upon the original
      issue thereof (or upon the occurrence of a record date with respect thereto),
      and any subsequent adjustments based thereon, shall, upon any such increase
      or
      decrease becoming effective, be recomputed to reflect such increase or decrease
      insofar as it affects such Options or the rights of conversion or exchange
      under
      such Convertible Securities;

    

    4) upon
      the
      expiration of any such Options or any rights of conversion or exchange under
      such Convertible Securities which shall not have been exercised, the Conversion
      Price computed upon the original issue thereof (or upon the occurrence of a
      record date with respect thereto), and any subsequent adjustments based thereon,
      shall, upon such expiration, be recomputed as if:

    

    (A) in
      the
      case of Convertible Securities or Options for Common Stock, the only Additional
      Shares of Common issued were shares of Common Stock, if any, actually issued
      upon the exercise of such Options or the conversion or exchange of such
      Convertible Securities and the consideration received therefor was the
      consideration actually received by the Company for the issue of all such
      Options, whether or not exercised, plus the consideration actually received
      by
      the Company upon such exercise, or for the issue of all such Convertible
      Securities which were actually converted or exchanged, plus the additional
      consideration, if any, actually received by the Company upon such conversion
      or
      exchange, and

    

    (B) in
      the
      case of Options for Convertible Securities, only the Convertible Securities,
      if
      any, actually issued upon the exercise thereof were issued at the time of issue
      of such Options, and the consideration received by the Corporation for the
      Additional Shares of Common deemed to have been then issued was the
      consideration actually received by the Corporation for the issue of all such
      Options, whether or not exercised, plus the consideration deemed to have been
      received by the Company upon the issue of the Convertible Securities with
      respect to which such Options were actually exercised.

     

    (e) No
      Impairment.
      The
      Company will not, by amendment of its Article 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 will at all times in good faith
      assist in the carrying out of all the provisions of this Section 3 and in the
      taking of all such action as may be necessary or appropriate in order to protect
      the conversion rights of the holders of the Series A Preferred against
      impairment.

    

    
      
         

      

      
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    (f) No
      Fractional Shares and Certificate as to Adjustment.
      No
      fractional shares shall be issued upon the conversion of any share or shares
      of
      the Series A Preferred, and the number of shares of Common Stock to be issued
      shall be rounded to the nearest whole share. Whether or not fractional shares
      are issuable upon such conversion shall be determined on the basis of the total
      number of shares of Series A Preferred the holder is at the time converting
      into
      Common Stock and the number of shares of Common Stock issuable upon such
      aggregate conversion. Upon the occurrence of each adjustment or readjustment
      of
      the Conversion Price of the Series A Preferred pursuant to this Section 3,
      the
      Company, at its expense, shall promptly compute such adjustment or readjustment
      in accordance with the terms hereof and prepare and furnish to each holder
      of
      Series A Preferred a certificate setting forth such adjustment or readjustment
      and showing in detail the facts upon which such adjustment or readjustment
      is
      based.

    

    (g) Notices
      of Record Date.
      In the
      event of any taking by the Company of a record of the holders of any class
      of
      securities for the purpose of determining the holders thereof who are entitled
      to receive any dividend (other than a cash dividend) or other distribution,
      any
      right to subscribe for, purchase or otherwise acquire any shares of stock of
      any
      class or any other securities or property, or to receive any other right, the
      Company shall mail to each holder of Series A Preferred, at least ten (10)
      days
      prior to the date specified therein, a notice specifying the date on which
      any
      such record is to be taken for the purpose of such dividend, distribution or
      right, and the amount and character of such dividend, distribution or right.
      Any
      notice required by the provisions of this Section 3 to be given to the holders
      of shares of Series A Preferred shall be deemed given within ten (10) days
      of
      deposit in the United States mail, postage prepaid, and addressed to each holder
      of record at his address appearing on the books of the Company.

    

    (h) Reservation
      of Stock Issuable Upon Conversion.
      The
      Company shall at all times reserve and keep available out of its authorized
      but
      unissued shares of Common Stock, solely for the purpose of effecting the
      conversion of the shares of the Series A Preferred, such number of its shares
      of
      Common Stock as shall from time to time be sufficient to effect the conversion
      of all outstanding shares of the Series A Preferred; and if at any time the
      number of authorized but unissued shares of Common Stock shall not be sufficient
      to effect the conversion of all then outstanding shares of the Series A
      Preferred, in addition to such other remedies as shall be available to the
      holder of such Series A Preferred, the Company will take such corporate action
      as may, in the opinion of its counsel, be necessary to increase its authorized
      but unissued shares of common stock to such number of shares as shall be
      sufficient for such purposes.

    

    4. Voting
      Rights.  Except
      as
      otherwise provided herein or by law, each holder of shares of Series A Preferred
      shall be entitled to the number of votes equal to the number of shares of Common
      Stock into which such shares of Series A Preferred could be converted and shall
      have voting rights and powers equal to the voting rights and powers of the
      Common Stock (except as otherwise expressly provided herein or as required
      by
      law, voting together with the Common Stock as a single class). The holders
      of
      Series A Preferred shall be entitled to notice of any stockholders’ meeting in
      accordance with the Bylaws of the Company and applicable law. Fractional votes
      shall not, however, be permitted, and any fractional voting rights resulting
      from the above formula (after aggregating all shares into which shares of Series
      A Preferred held by each holder could be converted) shall be rounded to the
      nearest whole number (with one-half being rounded upward). Each holder of Common
      Stock shall be entitled to one (1) vote for each share of Common Stock
      held.

    

    
      
         

      

      
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    Notwithstanding
      anything contained herein to the contrary, the Company shall not, without the
      approval by vote or written consent of the holders of the majority of the Series
      A Preferred then outstanding: (i) amend its Certificate of Incorporation in
      any
      manner that would alter or change the rights, preferences, privileges or
      restrictions of the Series A Preferred, so as to materially adversely affect
      such Series A Preferred; (ii) reclassify any outstanding shares of securities
      of
      the Company into shares having rights, preferences or privileges senior to
      or on
      a parity with the Series A Preferred; or (iii) authorize any other equity
      security, including any other security convertible into or exercisable for
      any
      equity security, having rights or preferences senior to or being on a parity
      with the Series A Preferred as to dividend rights or liquidation or voting
      preferences.

    

    5. Right
      of First Purchase.
      Each
      holder of Series A Preferred shall have a right to purchase their respective
      pro
      rata portion of all, or any part, of New Securities (as defined below) that
      the
      Company may, from time to time, propose to sell and issue. This right of first
      offer shall be subject to the following provisions:

    

    (a) “New
      Securities” shall mean any shares of common or preferred stock of any kind of
      the Company, whether now or hereafter authorized, and rights, options, or
      warrants to purchase said shares of common or preferred stock, and securities
      of
      any type whatsoever that are, or may become, convertible into said shares of
      common or preferred stock; provided,
      however,
      that
      "New Securities" shall not include shares issued: (i) pursuant to the conversion
      or exercise of convertible or exercisable securities so long as this preemptive
      right in this Section 5 applied with respect to the initial sale or grant by
      the
      Company of such security; (ii) to officers, directors or employees of, or
      consultants to, the Company pursuant to a stock grant, option plan or purchase
      plan or other stock incentive program or arrangement approved by the Board
      of
      Directors; (iii) in connection with stock splits, stock dividends and similar
      events; (iv) upon the exercise of warrants, options, notes or other rights
      to
      acquire securities of the Company which were outstanding as of the date of
      the
      Purchase Date; or (v) in connection with the acquisition of another corporation,
      business entity or line of business of another business entity by the Company
      by
      merger, consolidation, purchase of all or substantially all of the assets and/or
      shares, or other reorganization as a result of which the Company owns more
      than
      fifty percent (50%) of the voting power of such corporation. 

    

    
      
         

      

      
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    (b) If
      the
      Company proposes to issue New Securities, it shall give each holder of Series
      A
      Preferred written notice (the “Rights Notice”) of its intention thereof,
      describing the New Securities, the price, the general terms upon which the
      Company proposes to issue them, and the number of shares that each holder has
      the right to purchase under this Section 5. Each holder shall have ten (10)
      days
      from delivery of the Rights Notice to agree to purchase (i) all or any part
      of its pro-rata share of such New Securities and (ii) all or any part of
      the pro-rata share of any other holder of Series A Preferred (including for
      this
      purpose any permitted transferee of the Series A Preferred holder) entitled
      to
      such rights to the extent that such other holder does not elect to purchase
      its
      full pro-rata share, in each case for the price and upon the general terms
      specified in the Rights Notice, by giving written notice to the Company setting
      forth the quantity of New Securities to be purchased. If the holders who elect
      to purchase their full pro-rata shares also elect to purchase in the aggregate
      more than one hundred percent (100%) of their pro-rata share of the New
      Securities, such New Securities shall be sold to such holders of Series A
      Preferred in accordance with their respective pro-rata share. The consummation
      of such purchase by the holder must occur no later than twenty-one (21) days
      from the date of the delivery of the Rights Notice.

     

    (c) If
      the
      holders of the Series A Preferred fail to exercise in full the preemptive right
      within the period or periods specified in Section 5(b), the Company shall have
      one hundred twenty (120) days after delivery of the Rights Notice to sell the
      unsold New Securities at a price and upon general terms no more favorable to
      the
      purchasers thereof than specified in the Company's notice. If the Company has
      not sold the New Securities within said one hundred twenty (120) day period
      the
      Company shall not thereafter issue or sell any New Securities without first
      offering such securities to the holders of the Series A Preferred in the manner
      provided above.

    

    (d) Notwithstanding
      any provision in this Section 5 to the contrary, any holder of Series A
      Preferred which chooses to exercise the right of first offer set forth in this
      Section 5 may designate as purchasers under such right itself or its partners
      or
      affiliates in such proportions as it deems appropriate. 

    

    6. Preference
      and Participation Upon Liquidation, Dissolution or Winding Up.
      Upon
      any voluntary or involuntary liquidation, dissolution or winding up of the
      Company, each holder of Series A Preferred shall be entitled to receive, out
      of
      the assets of the Company available for distribution, an aggregate amount equal
      to the Original Issue Price plus the sum of any accrued but unpaid cumulative
      dividends (the “Preference Amount”) in preference to any distribution to the
      holders of Common Stock. After the payment of the Preference Amount to the
      holders of Series A Preferred, the remaining assets will be distributed among
      and paid to the holders of the Series A Preferred (assuming the conversion
      into
      Common Stock of all then outstanding shares of Series A Preferred) and the
      holders of the Common Stock on a pro rata basis. For purposes of this Section
      6,
      a liquidation, dissolution or winding up of the Company shall be deemed to
      be
      occasioned by, or to include (i) the sale, conveyance, exchange or transfer
      of
      all or substantially all of the property or assets of the Company or (ii) the
      acquisition of the Company by any other person by means of consolidation or
      merger of the Company with or into one or more persons (excluding any merger
      of
      the Company for the purpose of changing the domicile of the Company); unless,
      in
      either event, the Company’s stockholders of record immediately prior to such
      acquisition or sale will, immediately after such acquisition or sale, hold
      at
      least 50% of the voting power of the surviving entity.

    

    
      
         

      

      
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    7. Redemption. At
      any
      time following the two-year anniversary of the Purchase Date, the Company shall
      have the right, upon 10-days prior notice to the holders of the Series A
      Preferred, to (i) redeem all of the issued and outstanding Series A Preferred
      at
      a redemption price equal to the Original Issue Price or (ii) convert all the
      issued and outstanding shares of Series A Preferred to Common Stock at the
      then
      applicable conversion rate as set forth in Section 3. 

    

    8. Status
      of Acquired Shares.
      Shares
      of
      Series A Preferred acquired by the Company shall be restored to the status
      of
      authorized but unissued shares of capital stock, without designation as to
      series, and, subject to the other provisions hereof, may thereafter be
      issued.

    

    9. Other
      Preferences.
      The
      shares of the Series A Preferred shall have no other preferences, rights,
      restrictions, or qualifications, except as otherwise provided by law or the
      articles of incorporation of the Company.

    

    
      
         

      

      
        9SECURED
      PROMISSORY NOTE

    

    
      	
              $450,000.00

            	
              August
                20, 2007

            

    

    

    FOR
      VALUE RECEIVED,
      the
      undersigned, KARAT
      PLATINUM LLC, (the
      “Maker”), promises to pay to SENTRA
      CONSULTING CORP.,
      (the
“Payee”), on or before ninety (90) days from the date of this Note (the “Payment
      Date”) the principal sum of Four Hundred and Fifty Thousand and 00/100
      ($450,000.00) Dollars (the “Principal Amount”), and all interest accrued thereon
      as provided herein.

    

    Interest
      shall accrue on the unpaid balance of the Principal Amount at a rate of nine
      percent (9%) per annum (the “Interest Rate”). All interest payable hereunder
      shall be computed on the basis of actual days elapsed and shall be due and
      payable on the Payment Date.

    

    Maker
      shall have the right to prepay all or any portion of the outstanding Principal
      Amount and accrued interest thereon at any time without penalty or premium.
      All
      payments hereunder when paid shall be applied first to the payment of all
      accrued interest and the balance shall be applied to the Principal
      Amount.

    

    This
      Note
      shall be secured by all of Maker's right, title and interest, in and to any
      and
      all assets of Maker, whether now existing or hereafter arising or acquired,
      wherever located, together with all attachments, accessions and equipment now
      or
      hereafter affixed thereto or used in connection therewith, all substitutions
      and
      replacements thereof, all supporting obligations thereof, and all proceeds
      thereof, as provided pursuant to the General Security Agreement, dated July
      11,
      2007, as amended, and incorporated herein by reference. 

    

    Notwithstanding
      any provision contained herein, the total liability of Maker for payment of
      interest pursuant hereto, including late charges, shall not exceed the maximum
      amount of such interest permitted by law to be charged, collected, or received
      from Maker, and if any payments by Maker include interest in excess of such
      a
      maximum amount, Payee shall apply such excess to the reduction of the unpaid
      principal amount due pursuant hereto, or if none is due, such excess shall
      be
      refunded.

    

    1.    Events
      of Default.
      In case
      one or more of the following events (each, an “Event of Default”) (whatever the
      reason for such Event of Default and whether it shall be voluntary or
      involuntary or be effected by operation of law or pursuant to any judgment,
      decree or order of any court or any order, rule or regulation of any
      administrative or governmental body) shall have occurred and be
      continuing:

    

    a.    Default
      in the payment, when due or declared due, of any principal or interest payments
      hereunder.

    

    b.    Maker
      makes a general assignment for the benefit of creditors; or, in the absence
      of
      such application, consent, acquiescence or action, a trustee, receiver or other
      custodian is appointed for Maker; or for a substantial part of the property
      of
      Maker; or any bankruptcy, reorganization, debt arrangement or other proceeding
      under any bankruptcy or insolvency law, or any dissolution or liquidation
      proceeding, is authorized or instituted by, or instituted against, Maker; or
      any
      warrant of attachment or similar legal process is issued against any substantial
      part of the property of Maker.

    
      
         

      

      
         

        
          

        

      

      
         

      

    

    c.    Any
      representation or warranty made by Maker under this Note shall be untrue or
      misleading in any material respect when made.

    

    d.    Maker
      shall have breached any of its covenants and agreements hereunder.

    

    then,
      in
      each case where an Event of Default occurs, the Payee, by notice in writing
      to
      Maker shall inform Maker of such Event of Default and if such default is not
      cured within seven (7) business days from the date such notice is received
      by
      Maker, then Payee, may, at its option, declare the outstanding Principal Amount
      to be due and payable immediately, and upon any such declaration the same shall
      become immediately due and payable. 

    

    2.    General.

    

    a.    This
      Note
      shall be binding upon and inure to the benefit of and be enforceable by the
      respective successors and assigns of the Maker and Payee.

    

    b.    All
      notices, requests, claims, demands and other communications given or made
      pursuant hereto shall be in writing and shall be deemed to have been duly given
      if delivered in person, overnight courier prepaid, or mailed by prepaid first
      class registered or certified mail, postage prepaid, return receipt requested
      to
      the respective parties at the following addresses (or at such other address
      for
      a party as shall be specified in a notice given in accordance with this
      Section):

    

    	(a)  	
            If
              to the Maker:

          

    

    Karat
      Platinum LLC

    15
      Hoover
      Street

    Inwood,
      New York 11096

    Attention:
      Chief Executive Officer

    

    
      
        	
              	 (b)	
                With
                  copies to:

              

      

    

    

    Horowtiz
      & Riser

    30
      Broad
      Street

    New
      York,
      NY 10004

    Attention:
      Sam Riser, Esq.

    

    
      
         

      

      
        2

        
          

        

      

      
         

      

    

    (c)    If
      to
      Payee:

    

    Sentra
      Consulting Corp. 

    466
      Central Avenue, Suite 200 

    Cedarhurst,
      New York 11516

    Attention:
      Chief Executive Officer

     

    (c)    With
      copies to:

    

    David
      Lubin & Associates, PLLC

    26
      East
      Hawthorne Avenue

    Valley
      Stream, NY 11580

    Attn:
      David Lubin, Esq.

     

    All
      such
      notices, requests and other communications will (i) if delivered personally
      to
      the address as provided in this Section, be deemed given upon delivery, (ii)
      if
      delivered by overnight courier to the address as provided in this Section,
      be
      deemed given on the earlier of the first business day following the date sent
      by
      such overnight courier or upon receipt or (iii) if delivered by mail in the
      manner described above to the address provided in this Section, be deemed given
      on the earlier of the third business day following mailing or upon
      receipt.

    

    c.    This
      Note
      is to be governed by and construed in accordance with the laws of the State
      of
      New York. In any action brought under or arising out of this Note, the Maker
      hereby consents to the in personam jurisdiction of any state or federal court
      sitting in New York, New York, waives any claim or defense that such forum
      is
      not convenient or proper, and consents to service of process by any means
      authorized by New York law.

    

    d.    Maker
      hereby waives presentment, demand for payment, protest, and all other demands
      and notices in connection with the delivery, acceptance, performance and
      enforcement of this Note and authorizes Payee, without notice or further
      consent, to grant extensions of time in the payment of any monies under this
      Note, and to waive compliance of any provision of this Note.

    

    e.    In
      the
      event of a default in the payment of this Note, Maker shall pay Payee's and
      expenses of collection, including attorneys’ fees and costs. 

    

    
      
         

      

      
        3

        
          

        

      

      
         

      

    

    
 

    IN
      WITNESS WHEREOF, the undersigned has duly executed this Note on the date first
      set forth above.

    

    
      	 	
              KARAT
                PLATIINUM LLC

            
	 	 
	 	 
	 	
              By:     
                /s/
                David
                Neuberg         

            
	 	
              Name:
                David Neuberg

            
	 	
              Title:  
                Member

            

    

    

    
      
         

      

      
        4

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