第18题: [多项选择]关于OSPF as-external-LSA说法正确的是() A. link state id被设置为目的网段地址 B. Advertising Router被设置为ASBR的routerid C. Netmask被设置全0 D. 使用Link state ID和advertising router可以唯一标识一条AS-EXTERNAL-LSA 参考答案:A, B
第24题: [单项选择]The market has changed in character because now ______. A. it does sell jewellery B. the holy men do not sell there C. it sells goods for tourists and items of little value D. the traders have disappeared because it is too dangerous to sell there 参考答案:C 答案解析:[解析] 本题的依据句是'These days at what used to be one of the richest market places in the world,one buys ic