ccna 200 301 bookshelf recipe in mc

ccna 200 301 bookshelf recipe in mc.213 = 8192214 = 16,384Before you get stressed out about memorizing the above subdivisions of 2, know this: memorizing them can be helpful, but it's not an absolute imposition. Here's a little trick when calculating the powers of 2: each power is double the previous one.For example, when memorizing 2', all you need to do is remember that 28 = 256 first.Why? Because multiplying 28 ( 256 ) by 2, you get 29(512). o To calculate 2's, you can also start with 28 = 256 and just double 256 twice.You can also use another method. For example, if you want to know what 26 is, you can halve 256 twice: the first time you get 27, and the second time you get 2%1616.1.3 Subnet masksIn order for the subnet address mechanism to work, each device in the network must know which part of the host address is the subnet address. This can be achieved by specifying the übernet mask on each device. The subnet mask is a 32-bit binary value that tells the recipient of an IP packet which part of the IP address is the network ID and which part is the host ID.Network administrators use a combination of 1s and 0s to create this 32-bit subnet mask. A 1 in the subnet mask indicates that this part is a network or subnet address.Not all networks require a subnet, which means they will use the default subnet mask. Often we can also say that there are no subnet addresses in such networks. Table 6.1 lists the default subnet masks for Class A, Class B, and Class C addresses. These default masks cannot be changed. In other words, you cannot set the subnet mask for a Class B address to 255.0.0.0. If you try to do so, the host will recognize the address as invalid and will usually not let you enter it as such. For a Class A network address, you cannot change the first byte of the subnet mask, it must be set to at least 255.0.0.0. Similarly, you cannot use 255.255.255.255, which is an all 1 address, and is a broadcast address. Class B networks must start with 255.255.0.0, and Class C networks must start with 255.255.255.0.