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【单选题】
R1上执行show ip interface brief命令的输出中显示接口S0/0/0状态码为“up”和“down”，那么以下哪种情况可能属实A.
接口当前配置了shutdown命令
B.
R1的串行接口两端协议不同
C.
R1的串行接口没有安装串行电缆
D.
两台路由器的串行链路，只有一端配置了IP地址
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【简答题】经纬仪的检校主要有哪几项？
【单选题】The law firm Patrick worked for before he died filed for bankruptcy protection a year after his funeral. After his death, the firm's letterhead properly included him- Patrick S. Lanigan, 1954～1992. He...
A.
They all wanted to divorce their wives.
B.
They were all heavily involved in debts.
C.
They were all recovering from drinking.
D.
They had bought new homes, yachts, etc.
【单选题】为了提高程序的输入输出效率，应该遵循______。 Ⅰ．与外存有关的输入输出操作，应成块的传送数据 Ⅱ．所有的输入输出操作应有缓存，以避免过于频繁的信息交换 Ⅲ．对于外存，应采取简单有效的存取方法 Ⅳ．与终端和行式打印机相关的输入输出，应充分考虑设备的特性，以改进质量和速度
A.
Ⅱ，Ⅲ，Ⅳ
B.
Ⅰ，Ⅲ，Ⅳ
C.
Ⅱ，Ⅲ
D.
都是
【单选题】TEXT D The law firm Patrick worked for before he died filed for bankruptcy protection a year after his funeral. After his death, the firm's letterhead properly included him: Patrick S. Lanigan, 1954-1...
A.
They all wanted to divorce their wives.
B.
They were all heavily involved in debts.
C.
They were all recovering from drinking.
D.
They had bought new homes, yachts, etc.
【简答题】Griffith worked for a firm that specialized in economic development in Washington D.C. because she needed money to pay for her debt.
【简答题】什么是输入输出操作?
【单选题】The law firm Patrick worked for before he died filed for bankruptcy protection a year after his funeral. After his death, the firm's letterhead properly included him: Patrick S. Lanigan, 1954-1992. He...
A.
They all wanted to divorce their wives.
B.
They were all heavily involved in debts.
C.
They were all recovering from drinking.
D.
They had bought new homes, yachts, etc.
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