On a class B network, how many subnets are available with a subnet mask of 248?
On a class B network, how many subnets are available with a subnet mask of 248?
A). 2
B). 6
C). 30
D). 62
E). 126
2 answers
For class B The first 16 bits are reserved for networks
255.255.0.0
so no hoste are 2^16-2
among the in the problem it given that 248 as mask for third octent so 2^5 (11111000-248) among these 2 are not used( one for host network and one is special address which was not allocated for any net work( in this case 255.255.248.0 and another one for subnetwork)
Hence answer is 2^5-2=30
Other Questions
1. The analyst learns of the manager's information needs through use of
2. Which of the following is not an advantage of the data-base approach?
3. How many parameters does the replaceState() method take?
4. What Oracle backup and recover file contains user and system data?
6. The canvas element has a DOM method it is called.
9. When a transistor is cut off or saturated, transistor _____ have almost no effect