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640-801 Cisco CCNA Cisco Certified Network Associate

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Decimal=190, hexadecimal=CC Answer: B Explanation: For the binary equivalent of 10101010 to Decimal, the answer is 128+32+8+2=170.  Each one in binary is then 10 and 10, which is A and A in hexadecimal.  If we subtract 1 from each of these numbers (so we have 31, 63, 95, etc), we know that any IP address ending in any of these numbers will be a broadcast address. 32/27 network. 128/27 network. 192/27 network.  The TestKing CEO wants to know how many subnetworks this address provides, and how many hosts can be supported on each subnet.

Class A addresses start with 0, as they are addresses that are less than 128.  They are currently reserved for experimental use.  Which of one of the subnet masks below is capable of providing one useful subnet for each of the above departments (support, financial, sales & development) while still allowing enough usable host addresses to meet the needs of each department?  This also leaves us with 5 bits for hosts, which gives us 30 hosts.  Only 1 bit is required to give us 128 but 1 bit gives us 0 subnets.

254 networks with 65,534 per network. 254. The right answer is A. 0/24 then right answer is B.  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 - 47 - Using a Class C IP network, which subnet mask will provide one usable subnet per department while allowing enough usable host addresses for each department specified in the graphic?

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