Questions that were mostly asked from students at UCA interviews are the following
Why you want to be in UCA ?
In this question you should mention what you know about UCA and how it will be an advantage for you to be in UCA and one must mention you love coding but try not to exaggerate it if you actually do not solve programs on platforms like hackerearth, hackerrank etc daily. Be truthful and confident.
Tell me about yourself
You can mention about your strengths and also again in this question tell your love for coding and be confident. One can even tell about the projects that one has made even as part of curriculum.
One should read the following topics –
Sorting algorithms like insertion sort, selection sort, merge sort and quick sort and their time complexity. This question might be asked which is the best of all and why.