单项选择题
What information is used by a switch to forward an Ethernet frame to its destination?（）
A. IP address B. destination MAC address C. ARP table entry D. FCS checksum
单项选择题 What is the decimal equivalent of 10101010?（）
单项选择题 What represents the binary equivalence of 148?（）
单项选择题 What represents the decimal equivalence of 11100111?（）
