問題文
A table of the properties that may be written on a route is being read, and two of its rows are in question. Which of the three forms of route accepts a route toward a prefix that is not a next hop directly attached to the device, and which of them accept the pair of statements that keeps an inactive entry in the tables or takes it out of them?
選択肢
- The form the operator writes out by hand accepts it alone, the summary the device draws and the default it raises having no row of that kind against them at all, and that pair of statements stands open to the form written out by hand alone, the other two keeping it always
- All three of the forms accept it, the summary the device draws and the default it raises being treated the same way as the form the operator writes out by hand, and that pair of statements stands open to the form written out by hand alone, the other two keeping it always
- The form the operator writes out by hand accepts it alone, the summary the device draws and the default it raises having no row of that kind against them at all, and that pair of statements stands open to all three of the forms alike, whichever way the entry came to be there
- All three of the forms accept it, the summary the device draws and the default it raises being treated the same way as the form the operator writes out by hand, and that pair of statements stands open to all three of the forms alike, whichever way the entry came to be there