問題文
A switch is looking through the table it maintains on its own. How is the entry for an end attached to one of its own openings marked, and what becomes of a search that matches nothing?
選択肢
- For a switch reading its own table, the entry for an end hanging off one of its own openings is written as one held far away, and a lookup that finds nothing at all is dropped there and then
- For a switch reading its own table, the entry for an end hanging off one of its own openings is written as one it holds itself, and a lookup that finds nothing at all is handed up for a wider answer
- For a switch reading its own table, the entry for an end hanging off one of its own openings is written as one it holds itself, and a lookup that finds nothing at all is dropped there and then
- For a switch reading its own table, the entry for an end hanging off one of its own openings is written as one held far away, and a lookup that finds nothing at all is handed up for a wider answer