正确答案: A

卫星转发器

题目：VSAT通信网由VSAT小站、主站和（）组成。

解析：A

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举一反三的答案和解析：

[单选题]ISDN所有的业务具有()编号系统.

同一个

[单选题]CDMA系统中的（）的目的就是自动调整码相位。进一步缩小定时误差，使之小于码片间隔的几分之一，达到本地码与接收PN码频率和相位精确同步。

PN码跟踪

[单选题]( ）是用助记符来表示机器的指令，所以汇编语言中的语句与机器代码是一一对应的。

汇编语言

[单选题]语音信箱系统的自动集团电话功能主要是为某一集团提供和（ ）一批信箱。

配置

[多选题]阅读下面的短文，回答问题 [When an IP packet arrives at a router, generally the router looks at the destination address of the packet, and forwards the packet to one of its network interfaces. The forwarding decision is usually done by looking up the destination address from another data structure called a forwarding table. The forwarding table is created by the router using the routing table and possible routing policies existing in the router. The router then creates a table where it lists which networks are accessible through which of the router’s network interfaces. An IP router looks at every IP packet individually and does the forwarding decision on a packet-by-packet basis. If something changes in the router’s routing table, a packet can take a different route from a preceding packet even if it has the same destination.] From the paragraph above，we can see that the router （ ） a forwarding table according to the routing table and possible routing policies existing in the router. When an IP packet arrives at a router, the （ ） part of packet is normally checked by the router. An IP router checks every IP Packet individually and makes the forwarding decision based on （ ）.

is generated

generates A．forwarding table

routing policies

destination address A．the destination address and network interfaces

the destination address and forward table

routing policies and routing table

解析：D,D,C

[单选题]用weblogic.admin执行批量命令，应该是? ()

BAT

解析：参考答案A

[单选题]按照各类突发公共事件的性质、严重程度、可控性和影响范围等因素，将突发公共事件分为()级.

4

[多选题]机房内空调设备的排水管，不能与电源线同槽敷设或交叉重叠穿越。确实需要同槽或交叉的，要采取可靠的()措施。

防渗漏，

防潮，

绝缘

解析：A, B, D

[单选题]宽带综合业务数字网B-ISDN是以（）为核心技术网络。

ATM