2 Comments on “Which of the following IP addresses are valid Class B host addresses if a default Class B mask is in use?”

1. David says:

   November 13, 2015 at 5:09 pm

   Class A gets roughly half of the IPv4 address space, with all DDN numbers that begin with 1–126.
   Class B gets one-fourth of the address space, with all DDN numbers that begin with 128–191.
   Class C gets one-eighth of the address space, with all numbers that begin with 192–223.
   Class D defines multicast addresses, used to send one packet to multiple hosts, with numbers that begin with 224–239.
   Class E defines experimental addresses, with numbers that begin with 240–255.
   0 and 127 are reserved

   
   
   
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2. Pekovic says:

   March 23, 2016 at 12:06 pm

   1 and 128 (class A bounds)
   128 and 192 (class B bounds)
   0 and 127 are reserved

   
   
   
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