Functional testing tests whether the output is the expected(75)with the valid input.
A.reason
B.result
C.outcome
D.record
下列参数中,(29)是音频信息数字化的参数。
A.主频
B.采样频率
C.压缩比
D.分辨率
设有两个子网210.103.133.0/24和210.103.130.0/24,如果进行路由汇聚,得到的网络地址是(28)
A.210.103.128.0/21
B.210.103.128.0/22
C.210.103.130.0/22
D.210.103.132.0/20
OSPF is a link-state routing protocol。It is designed to be run internal to a single __(71__system。Each OSPF router maintains an identical __(72)__ describing the autonomous system’s topology。From this database,a routing table is calculated by constructing a shortest-path __(73)__。OSPF recalculates routes quickly in the face of topological changes,utilizing a minimum of routing __(74)__ traffic。OSPF provides support for equal-cost multipath。An area routing capability is provided,enabling an additional level of routing protection and a reduction in routing protocol __(75)__。
A.autonomous
B.network
C.computer
D.server
某通信公司公布了速率为512K的两种ADSL使用类型的资费标准如下:
根据该资费标准可以算出,月上网时间在T以下者,选择类型A比较合适;月上网时间在T以上者,应选择类型B。T的值应是(63)。
A.15小时30分
B.28小时20分
C.30小时
D.40时
FTP客户登录时,使用的连接是(46),对应的服务器端口为21。
A.建立在TCP之上的控制连接
B.建立在TCP之上的数据连接
C.建立在UDP之上的控制连接
D.建立在UDP之上的数据连接