IPv4 classes, CIDR, subnet masks, network and broadcast addresses, VLSM, private ranges and subnet calculation shortcuts.
46 cards · basic cards · AI-written, checked twice. Edit anything.
- What is the first octet range for IPv4 Class A?
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1 to 126- What is the first octet range for IPv4 Class B?
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128 to 191- What is the first octet range for IPv4 Class C?
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192 to 223- What is IPv4 Class D used for?
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Multicast (224 to 239)- What is IPv4 Class E used for?
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Reserved for future use (240 to 255)- What does CIDR notation represent?
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Classless Inter-Domain Routing, written as IP/prefix length (e.g., 192.168.1.0/24)- What is the default subnet mask for a /24 network?
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255.255.255.0- What is the default subnet mask for a /16 network?
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255.255.0.0- What is the default subnet mask for a /8 network?
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255.0.0.0- What does 255.255.255.128 equal in CIDR notation?
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/25- What does 255.255.255.192 equal in CIDR notation?
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/26- What does 255.255.255.224 equal in CIDR notation?
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/27- What does 255.255.255.240 equal in CIDR notation?
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/28- What does 255.255.254.0 equal in CIDR notation?
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/23- What is a network address?
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The first address in a subnet where all host bits are 0, identifies the entire subnet
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