Sampling theory and frequency spacing If a CT signal $x(t)$ is sampled for one ($1$) second and $4096$ samples are generated:  


Isn't the highest frequency that can be sampled without aliasing ($4096/2$) $2048\textrm{ Hz}$?  
If a $4096$ FFT of this signal is computed what is the frequency spacing between the output points (in $\textrm{Hz}$) ?
Yes, the highest frequency is half the sampling rate. The frequency spacing is 1 Hz since samples are accumulated for 1 second.