Recent activity in Information Theory

Consider the following two statements:A Hash function, which is used for computing digital signatures, is an injective functionAn encryption technique such as $\text{DES}...

Has functions are used to produce the message digests which are then encrypted with a private key to get:Public keyDigital signatureCipher textData Encryption Standard

A bandlimited signal is sampled at the Nyquist rate. The signal can be recovered by passing the samples through :an $\text{RC}$ filteran envelope detectora $\text{PLL}$an...

The channel capacity of a noise free channel having $\text{M}$ symbols is given by :$\text{M}$$2^{\text{M}}$$\log \text{M}$None of these

The capacity relationship is given by$C = W\log_{2}(1+S/N)$$C = 2W\log_{2}(1+S/N)$$C = W\log_{2}(1-S/N)$$C = W\log_{10}(1+S/N)$

Which of the following is possible in a token passing bus network?in-service expansion.unlimited number of stations.both (A) and (B).unlimited distance.

The noise due to random behavior of charge carriers is:Partition noiseIndustrial noiseShot noiseFlicker noise

A sinusoidal signal is analog signal, because:it can have a number of values between the negative and positive peaksit is negative for one half cycleit is positive for on...