1.a)1000b/100b/s=10s
5skoka*10s=50s
b)5paketa*20b=100b
1000b+100b=1100b
1100b/100b/s=11s
5skoka*11s=55s
2.H=2kHz=2000Hz
S/N=63 
Shannon
Dm=H*log2(1+S/N)=2000Hz*6=12000b/s=1.2Mb/s
Nyquist
Dm=2H*log2V
12000b/s=4000Hz*log2V
log2V=3
V=2^3=8 nivoa
3.a)QAM
b)D=R/L=4800bps/3bita=1600baud
v)8fazi*4nivoa=32=2^5 => L=5bita
4.maximumtransmissionspeed
5.ab239312
1010 1011 0010 0011
1001 0011 0001 0010
-------------------
0011 1110 0011 0110(ima overflow)
3 e 3 6
3e36 != c1ca -> error




164.10.10.100 so 19.1.1.1
201.32.40.37 so 164.10.10.129
19.11.112 19.1.1.0
164.10.10.200 so 164.10.10.128/25
194.149.139.12 so 192.168.1.1