VeriFone  Placement Paper   Whole Testpaper   -1 Apr 2005

VeriFone  Placement Paper   Whole Testpaper   -1 Apr 2005


  • Posted by  FreshersWorld 
    7 Jan, 2012

    VERIFONE  Question Paper 4 2005

    there will be 45 qstns. 15+5+5+5+5+5+5.

    section: electronics:

    1.a logic ckt is given and asked to identify the configuration.
    ans: XOR.
    2.multi vibrator with nor gates is given
    ans: astable multi sqr wave opt.
    3.4 stage ripple counter with delay(f/f) 10msec. How much time it takes
    for a state to change. 4*10=40.
    4.impedence of a p'lel resonant circiut at resonance:R.
    5.serial to parellel conversion is done by ans:shift register.
    5.if the address bus id 20bits.then the memory space is 1Mb.
    6.filtering can be done with:capacitor,iductor,both,none.
    7.the config that is worst effected by low CMMR
    ans:Non inverting amplifier.
    8.two progs are given. one satrts counting frm 0 to MAX and the other
    stars frm MAX to 0. which one executes fast.may be Max to 0.Think of.it
    should be.

    another 6 qstns are there. simple.

    Networks:

    1.
    the fctn of datalink layer is:bit stuffing.
    2.which of the following is not fctn of datalink layer: Encription.
    3.voltage levels of rs232x:+12,-12.
    4.which of the following is not used for client/server.
    RPC, TCP/IP, MESSAGEQs None ans:may be none.
    5.

    Database:

    1. which of the following is true.
    ans:the primary key in Database design is very important.
    2. SQL is a Non procedural query langauge.
    3.
    4
    5.


    Compiler/algo/ds:


    1.Data structure used to impliment a menu: doubly linked circular linked list.
    2. some regular expression is given:WaW'.may be it is context free grammar.
    3.,4,5.


    os:
    1.the feature of real time os is: fast context swithing.
    2.os impliments protection with the help of hardware(like virtual
    addressing in 386/286 etc).



    C:
    some small c progs are given asked to tell the function/errors etc.
    one of the qstn(last in the paper) is an invalid statement.
    finish of all these very fast and think about those others. they are
    simple only.


    Interview:


    depends on the member.(Mr.Deep if he comes asks archirect of 586/486/386/286
    etc. otherwise DS,OS,C,TCP/IP . they hv taken 21(18btechs+3mtechs).
    ok if u hv any queries ask immediately.
           

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