Isn't "what" redundant? Is this sentence "Let us first take a look at kinds of transparency exist in distributed systems" correct, please?
"An important goal of a distributed system is to hide the fact that its processes and resources are physically distributed across multiple computers. A distributed system that is able to present itself to users and applications as if it were only a single computer system is said to be transparent. Let us first take a look at what kinds of transparency exist in distributed systems. After that we will address the more general question whether transparency is always required."
Let us first take a look at what kinds of transparency exist in distributed systems. You can't just delete 'what', but you can also say eg Let us first take a look at the kinds of transparency that exist in distributed systems. In #1, the focus is on enquiring.
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Let us first take a look at what kinds of transparency exist in distributed systems.
You can't just delete 'what', but you can also say
eg Let us first take a look at the kinds of transparency that exist in distributed systems.
In #1, the focus is on enquiring.
In #2, the focus is on explaining.
Let us first take a look at what kinds of transparency exist in distributed systems.
No: "kinds" requires the interrogative determiner "what".
The underlined constituent is a subordinate interrogative clause (embedded question), whose meaning is:
"Let us first take a look at the answer to the question 'What kinds of transparency exist in distributed systems?'