搜题请搜索小程序“爱下问搜题”
问题 单项选择题

程控数字交换机的控制系统主要由处理机“CPU”、（）和各种输入输出设备“I/O”组成。

A.内存储器“RAM”

B.存储器

C.内存储器“ROM”

D.磁盘存储器

答案

参考答案：A

单项选择题 A1/A2型题

Graves病患者服甲巯咪唑后症状明显减轻，甲状腺明显增大，突眼加重，最可能是由于（）

A.对抗甲状腺药物耐药

B.无机碘供给不足

C.合并甲状腺炎或甲状腺腺瘤

D.甲状腺激素反馈抑制减弱

E.血中TRAb明显减少
查看答案
单项选择题

Border Gateway Protocol(BGP) is inter-autonomous system ______ protocol. BGP is based ona routing method called path vector routing. Distance vector routing is not a good candidate for inter-autonomoussystem routing because there are occasions on which the route with the smallest ______ count is not thepreferred route. For example, we may not want a packet through an autonomous system that is not secure eventhough it is shortest route. Also, distance vector routing is unstable due to the fact that the routers announce onlythe number of hop counts to the destination without defining the path that leads to that ______. A router thatreceives a distance vector advertisement packet may be fooled if the shortest path is actually calculated throughthe receiving router itself. Link ______ routing is also not a good candidate for inner-autonomous system routingbecause an internet is usually too big for this routing method. To use link state routing for the whole internetwould require each router to have a huge link state database. It would also take a long time for each router tocalculate its routing ______ using the Dijkstra algorism.

A．path

B．hop

C．route

D．packet
查看答案