多项选择题 Which of the following statements regarding routed and routing protocols are true?（）

单项选择题 What should the configuration register value be after successfully completing the password recover procedure and returning the router to normal operation? （）

单项选择题 The following access list was applied outbound on he E0 interface connected to the 192.168.1.8/29 LAN: access-list 123 deny tcp 192.168.1.8 0.0.0.7 eq 20 any access-list 123 deny tcp 192.168.1.9 0.0.0.7 eq 21 any What effect will this access list have?（）