643-832选择题概念性题

tmackobealle

各位大虾，题库里的这种概念性题只需考试时怎么做丫？没有让几个选择，答案给出了，是要记住这个答案？还是考试时有别的多选项呢？
不懂，如下面的一个题库里的题。给的答案：
7 ^) I7 u: S" z, oYou have two NTP servers 10.1.1.1 & 10.1.1.2 and want to configure a router to use
10.1.1.2 as its NTP
server before falling back to 10.1.1.1. Which command will you use?
Answer:
1 q: s9 v3 x. {) C5 N8 H* ^ntp server 10.1.1.1
ntp server 10.1.1.2 prefer
(notice the answer with the word “prefer”)