ibm的redbook 和sample test里的答案怎么不一到啊

kkkggg21cn

186上的答案是c
3. Since the use of /etc/hosts.equiv or ~/.rhosts allows remote access without
using a password, which of the following procedures is most appropriate to
disable the use of these files?
A. Use the -l flag on rsh and rlogin
B. Put an entry in the /etc/nologin file
C. Delete the /etc/hosts.equiv and ~/.rhosts files and tell
your users not to create new ones
D. Change permissions of /etc/hosts.equiv and ~/.hosts
to anything other than 600.



sample test上的答案是d
12. Since the use of /etc/hosts.equiv and/or ~/.rhosts allow remote access without using a password, which of the following procedures is most appropriate to disable the use of these files?
Use the -l flag on rsh and rlogin
Put an entry in the /etc/nologin file
Delete all ~/.rhosts files and tell your users not to create new ones
Change permissions of /etc/hosts.equiv and ~/.hosts to anything other than 600

大家的意见是什么呢？

thanks a million

老农a

d是错的，640就还可以用。

kkkggg21cn

ibm网站好喜欢犯这样的错误

存储里面有一道题也类似这样：同样一道题（同样的选项）在不同的sample test中答案不一样