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15 Cards in this Set
- Front
- Back
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What is the range of valid Class A network numbers?
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1.0.0.0 to 126.0.0.0
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What is the range of valid Class B network numbers?
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128.1.0.0 to 191.254.0.0
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What is the range of valid Class C network numbers?
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192.0.1.0 to 223.255.254.0
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What is the purpose of subnetting?
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Without subnetting you would have to use a different Class A, B, or C network address for every network. Subnetting allows you to break a single network range into multiple separate segments.
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What is a boolean AND operation?
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Using two binary digits to generate a third - if both inputs are "1" the output is a "1" also. Otherwise the output is "0".
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Given an IP address and a subnet mask, how can you use a boolean AND to discover the subnet number?
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Perform a bit-by-bit AND between the IP address and the subnet mask.
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What is prefix notation?
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Instead of specifying a subnet mask, you can specify how many bits in an address are devoted to either network or subnet portions. So 10.32.146.0/8 has a subnet mask of 255.0.0.0.
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Given the number of host bits in a network address, how do you calculate the total number of hosts allowed on that network?
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2 raised to the number of host bits, and subtract 2.
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Given the number of subnet bits in a network address, how do you calculate the total number of subnets allowed on that network?
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2 raised to the number of subnet bits, and subtract 2.
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What is the binary value of each of the following decimal numbers:
0 128 192 224 240 248 252 254 255 |
0 = 0000 0000
128 = 1000 0000 192 = 1100 0000 224 = 1110 0000 240 = 1111 0000 248 = 1111 1000 252 = 1111 1100 254 = 1111 1110 255 = 1111 1111 |
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What is CIDR?
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Classless Interdomain Routing. It allows routers to aggregate and combine routes to improve scalability. For instance, a router can list a single route to the entire 10.0.0.0/8 network space.
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How does CIDR work?
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Routers include a network mask when they exchange information and set up routing tables.
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What are the reserved private address space ranges?
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10.0.0.0 to 10.255.255.255
172.16.0.0 to 172.31.255.255 192.168.0.0 to 192.168.255.255 |
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What is NAT?
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Network Address Translation allows a router to forward packets to and from hosts in private address space.
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How many bits are in an IPv6 address?
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128
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