IIS Port numbers?
80 is the default port for HTTP traffic
21 is the default port for FTP for sending and recieving
data.
443 is the defaulr for SSL traffic
port 25 smtp
Q1> In a combinational circuit ,there are 2 inputs X=X3 X2 X1 X0 & Y= Y3 Y2 Y1 Y0. There is a 4 bit comparator circuit is available shown Below with a multiplexer whose 8 inputs used as inputs and has 4 outputs. Design a circuit so that when C=0 then output of multiplexer is Min(X,Y) and when C=1 the output of mux is Max (X,Y). You can use some more Additional gates as required.
Figure is in :
Q2> Design a Ones counter circuit has 7 Inputs X0,X1,X2,X3,X4,X5,X6 and has 3 outputs O3 O2 O1. Thus ones’s counter gives 3 bit output which is equal to numbers of 1s in the inputs.
Q3> Develop a state Table / Flow design a for the circuit given below,
It has one input teminal x & and one input terminal ‘z’. The output ‘z’ =1 whenever the input recievs EVEN numbers of ‘0’s (Except 1st zero) . If current receiving input =’0’ and is even then only output is ‘1’ otherwise ‘0’.
Ocuurance off “11” is avoided,but if occurs then output remains 0 afterwards.
000001010011101……..
010100110110000…….
Q4> There is a ram available of 8x2 as shown below. Arrange these ,so that we get 16x4 RAM with use of Same additional gates a reqired.
Q5> Generate a memory mapping of a circuit:
Figure is in:
Other Questions where all about State machine but I can remember those cause they were very tricky and no time was there to understand properly .
Q> All were like, there is a input X of 2 or 3 bits, when X1X0 becomes 00 thrice in any order in incoming data , then output is 1 but when “11” comes thrice output becomes zero.
Q> State machine having 2 input X1 x0 and 2 output, for some combination of input ,there will be some input and for other it will be different and like this only.
