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Additional resources for 640-801 Cisco CCNA Cisco Certified Network Associate (Version 90.0)

Example text

Not all of the host addresses on the left will be used.  After subnetting the address, the team is ready to assign the address.  As a member of the networking team, you must address the network and at the same time converse unused addresses for future growth.  Not all of the host addresses on the left will be used. com - 58 - QUESTION NO: 56 In network that support VLSM, which network mask should be used for point-to-point WAN links in order to reduce waste of IP addresses?  This is the exact number needed for a point-to-point connection.

However, we must still subtract two addresses (the network address and the broadcast address) to determine the maximum number of hosts the subnet will support.  It corresponds to a Class A address with 13 bits borrowed.  It corresponds to a Class B address with 4 bits borrowed.  The network address of the last subnet will have 248 in the 3rd octet.  The first 21 bits make the host portion of the address.  This subnet mask allows for 16 total subnets to be created.  The subnetwork numbers will be in multiples of 8.

254. 64 (B) are correct. 1/20, what is the maximum number of hosts allowed on this subnet?  Each subnet must support at least 24 hosts. Which network mask should you use?  This matches with requirement.  What should you tell him? 224 subnet mask? com - 55 - next network 0 0 1 1 0 0 0 0 (which equals 48) Range of host values are: RANGE 0 0 1 0 0 0 0 1 TO RANGE 0 0 1 0 1 1 1 0 network is 32 the next network is 32 + 16 = 48 the range is 32 + 1 to 48 - 2. this results in a range 33 to 46.  These choices are both network addresses.

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