VeriFone Placement Paper Whole Testpaper -1 Apr 2005
VERIFONE Question Paper 4 2005there 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 givenans: astable multi sqr wave opt.3.4 stage ripple counter with delay(f/f) 10msec. How much time it takesfor 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 CMMRans:Non inverting amplifier.8.two progs are given. one satrts counting frm 0 to MAX and the otherstars frm MAX to 0. which one executes fast.may be Max to 0.Think of.itshould 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.3.45.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 virtualaddressing 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 aresimple only.Interview:depends on the member.(Mr.Deep if he comes asks archirect of 586/486/386/286etc. otherwise DS,OS,C,TCP/IP . they hv taken 21(18btechs+3mtechs).ok if u hv any queries ask immediately.
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