Hughes Paper

i am sending u hughes paper all the best 
 
huges: 
 
all these are multiple choice questions. 
we didn't remember the exact questions but we can understand the  
questions 
by seeing this. 
 
1) best noise performance 
   ans:: QPSK 
 
2)PLL is used for 
  ans:: FM demodulation 
 
3)fastest A/D converter 
  ans:: flash type 
 
4)digital mode 
  ans:: PCM 
 
5)code used for both correction and detection 
  ans:: convolutional 
 
6)ans:: XY are correct 
 
7)No. of externally initiated operations in microprocessor 
  ans:: 4 
 
8)TCP is slower than UDP as 
  ans::TCP process service numbers add to overhead 
 
9)C program on strings 
  ans:: hell 
 
10)#define max(a,b) (a<b?b,a) 
   i=2; 
   j=3; 
   k=max(i++,j++) 
   ptintf i,j,k; 
 
   ans::make it urself 
 
11)unix kernal i node specifies 
   a) file name   2)file size   3)start of file  d)all the above 
 
   ans::may be (d) 
 
12)process of using extended memory 
   ans:: swaping 
 
13)integer size in C 
   ans:: check it out 
 
14)no. of half adders needed to implement a full adder 
   ans::2 
 
15)No of FF's needed in a 8-bit register with SISO,to i/p and o/p an  
8-bit number 
   ans::9 
 
16)One question on  
   --> given clock freq = 5MHz 
   --> No of T-states   = 12 
    
17)session login application 
   ans::RPC 
 
18)Tunnel diode has 
   ans:: -ve resistance. 
 
19)Smith chart user for finding 
   ans:: VSWR of Transmission line. 
 
20)In PC, packet Tx is by 
   ans:: little indian 
 
21)Normal mode of PROM 
   ans:: Write mode 
 
22)One question on multithreding 
 
23)One circuit diagram on differential amplifier-problem. 
 
24)One question on TCP/IP 
 
______________________________________________________________________ 
             Some Aptitude Question 
______________________________________________________________________ 
 
1)up stream ---- 20km --- 2hrs 
  down stream -- 20km --- 1hrs 
  still water -- 30km --- ???? 
 
  ans:: 1 hr 
 
2)avg temp from 
  mon-thu ---> 36 degrees 
  tue-thu ---> 37 degrees 
  on thu  ---> 4/5 th of monday's 
  what is thursday's temparature 
 
  ans::36 degrees 
 
3)problem on work and time. 
 
4)bus with out stops 54kmph 
      with stops 45kmph 
  for 1hr, does the bus stops 
 
  and:: find it out 
 
5)10^n - 1 divisible by 11 
  ans:: n is even 
 
6)1/(1.2) + 1/(2.3)+........+1/(n(n+1)) 
  ans:: less than 1 
 
7)2 dice sum is 7, probability...... 
  ans:: 1/6 
 
8)x<y, y>z fin relation between x and z 
  ans:: cant find