答案是B和D,为什么?解题时思路是什么?怎么考虑的?Whichtwoaddressescanbeassignedtoahostwithasubnetmaskof255.255.254.(Choosetwo.)A.113.10.4.0B.186.54.3.0C.175.33.3.255D.26.35.2.255E.17.35.36.0

Question

答案是B和D,为什么?解题时思路是什么?怎么考虑的?
Which two addresses can be assigned to a host with a subnet mask of 255.255.254.(Choose two.)
A.113.10.4.0
B.186.54.3.0
C.175.33.3.255
D.26.35.2.255
E.17.35.36.0

Answer 1

这种题,掩码为255的那些根本不用管,从非255的开始着手
254=1111111 0 ,以下用x代表此位为网络号,y主机号.
X Y
4.0= 0000010 0.00000000
3.0 = 0000001 1.00000000
3.255= 0000001 1.11111111
2.255= 0000001 0.11111111
36.0= 0010010 0.00000000
明了吧