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How many valid host IP addresses does each Class A network contain?
256
How many valid host addresses are available on class B network that is not subnetted?
65,534
What is the valid IP host for the network ID 190.254.0.0?
If you aren't subnetting, then the host range for this network would be: 190.254.0.0 - 190.254.255.255 The above shows the IP address range, but not all addresses would be usable (mostly the first and the last addresses would probably be not assignable to a device).
Is 190.254.1.29 a valid IP host for the network ID of 190.254.0.0 with 11 bits for subnetting?
190.254.1.29
Which IP addresses are defined by RFC 1918 as private addresses?
"The RFC 1918 private network numbers are 10.0.0.0, Class Bs between 172.16.0.0 and 172.31.0.0 inclusive, and all Class C networks that begin with 192.168. All addresses that begin with 127 are reserved, but not as valid private IP addresses."
Is 191.76.43.10 a valid routable class C address?
No, because the range for class C addresses is 192 - 223, and the first octet of the address 191.76.43.10 is a class B address.
How many ip addresses are there in a class A?
There are 2^24 host in class A but (2^24)-2 hosts are valid since the first and last address are reserved .
Why is it unlickely that you will find the IP address 192.168.250.10 on the Internet?
It is unlikely that you will find the IP address 192.168.250.10 on the internet because the .10 represents the number of host connected to an individual network. Also, IEEE recommends that the following IP addresses be used for private networks: 10.0.0.0 through 10.255.255.255 Class A 172.16.0.0 through 172.31.255.255 Class B 192.168.0.0 through 192.168.255.255 Class C
How many valid IP addresses can you use in a class C network address if you are using 24 bits for the default subnet mask?
You can use up to 254 devices in this case.
What is valid CLASS-C host address?
An example of a valid class C address would be 192.168.6.200
What is the maximum number of bits that can be borrowed with class b?
The maximum number of host bits that can be borrowed from a class A address is 22 (technically you could borrow 23 but the resulting network would be useless). A class A address uses 8 bits for its network address and 24 bits for its host addresses. Class A uses a subnet mask of 255.0.0.0 You can only borrow 22 bits (instead of 24) because a valid network requires 4 addresses: A network address, two host addresses and a broadcast address. These networks would result in 30 bits used for the network address and 2 bits used for the host addresses. These networks use a subnet mask of 255.255.255.252
What is the valid method for disabling a session?
In order to dispose of a session that is no longer needed, you can call the invalidate() method of the HttpServlet class. Assuming you have an instance of HttpServlet called 'session' you would do this: session.invalidate();
