Match the following (numbered) terms to the best available (alphabetical) definition or related text below. Some of the text identified with a letter will not be used; each text identified with a letter will be used at most once.

Threads in programming languages are useful because they

What is AES?

A certification authority is used to:

Assume that 5 notes (A, B, C, D, and E) are implementing the RAFT algorithm, and have been operating normally with E as their leader and any node able to reach any other node. Now assume a network partition occurs, so that nodes A and B are separated from nodes C, D, and E. Nodes A and B can communicate with each other, but not with nodes C, D, or E, and vice versa. What will happen next?

When evaluating the various methods of propagating updates, what are some relevant evaluation criteria that you might use?

What is true about caching and Apache Spark RDDs?

In triple modular redundancy, each device is replicated three times, followed by a triplicated voter.  Why are three voters used at each stage in this design?

What is a valid way to compute MTBF?

You are given two clocks: one is slower than the perfect clock (UTC) by a drift rate of p, while the other one is faster than the perfect clock by a drift rate of q. How often should the clocks be synchronized to keep them within ∆t of one another?