問題文
An architect opens a block and finds in its head a single value that stands for all the block body carries. What is that value set against when a machine checks the block, and what can a party be shown from that value with a handful of the digests beneath it?
選択肢
- The value in the head is set against the value drawn anew from the body itself, and from a handful of digests taken from the body it lets a party be shown that a given record was among those covered.
- The value in the head is set against the value drawn anew from the body itself, and from a handful of digests taken from the body it lets a party be shown that the body reached it and was unaltered.
- The value in the head is set against the value carried in the head below it, and from a handful of digests taken from the body it lets a party be shown that the body reached it and was unaltered.
- The value in the head is set against the value carried in the head below it, and from a handful of digests taken from the body it lets a party be shown that a given record was among those covered.