设信道带宽为4000Hz,调制为256种不同的码元,根据Nyquist定理,理想信道的数据速率为(23)。
A.4Kb/s
B.16Kb/s
C.32Kb/s
D.64Kb/s
- · 有5位网友选择 A,占比25%
- · 有3位网友选择 D,占比15%
- · 有3位网友选择 C,占比15%
- · 有3位网友选择 B,占比15%
- · 有2位网友选择 B,占比10%
- · 有2位网友选择 A,占比10%
- · 有2位网友选择 D,占比10%
A.4Kb/s
B.16Kb/s
C.32Kb/s
D.64Kb/s
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)__。
71
A.autonomous
B.network
C.computer
D.server
(5)A.域名
B.所使用的协议
C.访问的主机
D.请求查看的文档名
(7)A.调用
B.调度
C.同步
D.中断
(59) A.50
B.100
C.150
D.200
(62) A.useradd -d /home/alex alex
B.useradd -d /usr/alex alex
C.useradd -D /home/alex alex
D.useradd -D /usr/alex alex
为了保护您的账号安全,请在“简答题”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!