单项选择题
A. 11011011 B. 11110011 C. 11100111 D. 11111001 E. 11010011
Which one of the binary number ranges shown below corre...
单项选择题Which one of the binary number ranges shown below corresponds to the value of the first octet in Class B address range?（）
A. 10000000-11101111 B. 11000000-11101111 C. 10000000-10111111 D. 10000000-11111111 E. 11000000-10111111
The subnet mask on the serial interface of a router is ...
单项选择题The subnet mask on the serial interface of a router is expressed in binary as 11111000 for the last octet. How do you express the binary number 11111000 in decimal?（）
A. 210 B. 224 C. 240 D. 248 E. 252
You have the binary number 10011101. Convert it to its ...
多项选择题You have the binary number 10011101. Convert it to its decimal and hexadecimal equivalents.（）
A. 158 B. 0x9D C. 156 D. 157 E. 0x19 F. 0x9F
