Your opinion is that CSCO has an expected rate of return of 0.15. It has a beta of 1.3. The risk-free rate is 0.04 and the market expected rate of return is 0.115. According to the Capital Asset Pricing Model, this security is

Overpriced

Explanation:

The computation is shown below;

As we know that

Expected rate of return = risk free rate + beta × ( expected market rate of return - risk free rate )

= 0.04 + 1.3 × (0.115 - 0.04)

= 0.1375

As the return of the security is 0.1375  i.e.  more than the expected rate of return i.e. 0.115

Hence, it is overpriced