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Net+ IP & Subnetting

Network + IP Addressing, Subnetting, Troubleshooting and Intro to NAT

QuestionAnswer
/25 (in dotted decimal, binary, block size, number subnets & hosts) - 255.255.255.128 - 1 bit on 7 bits off (10000000) - Block size of 128 - 2 subnets with 126 hosts
/26 (in dotted decimal, binary, block size, number subnets & hosts) - 255.255.255.192 - 2 bits on and 6 bits off (11000000) - Block size of 64 - 4 subnets, 62 hosts
/27 (in dotted decimal, binary, block size, number subnets & hosts) - 255.255.255.224 - 3 bits on, 5 bits off (11100000) - Block size of 32 - 8 subnets with 30 hosts
/28 (in dotted decimal, binary, block size, number subnets & hosts) - 255.255.255.240 - 4 bits on and 4 bits off (11110000) - 16 subnets with 14 hosts
/29 (in dotted decimal, binary, block size, number subnets & hosts) - 255.255.255.248 - 5 bits on and 3 bits off (11111000) - Block size of 8 - 32 subnets with 6 hosts
/30 (in dotted decimal, binary, block size, number subnets & hosts) - 255.255.255.252 - 6 bits on 2 bits off (11111100) - Block size of 4 - 64 subnets and 2 hosts
One digit, either a one or a zero. Bit
7 or 8 bits, depending on whether or not parity is used. (Assume 8) Byte
An 8 bit binary number Octet
The designation used in routing to send packets to a remote network--for example 10.0.0.0, 172.16.0.0 and 192.168.10.0. Network address
Address used by applications and hosts to send information to all hosts on a network. Broadcast address
Multicast falls into this network class. Class D
This is an experimental network class for research. Class E
Address reserved to designate default route. Could also mean "any network". 0.0.0.0
Class A Private address space 10.0.0.0 through 10.255.255.255.
Class B Private address space. 172.16.0.0 through 172.31.255.255
Class C Private address space 192.168.1.1 through 192.168.255.255
APIPA address range / subnet mask. 169.254.0.1 through 169.254.255.255, subnet mask 255.255.0.0
IPv6 shortened expression. 2 rules. Drop leading zeros. One entire block of zeros can be replaced with a double colon.
IPv6 Address: Packets delivered to this address are delivered to a single interface, same as in IPv4. For load balancing, multiple interfaces can use the same address. unicast
IPv6 Address: These are your typical publicly routable addresses, and they're used the same way in IPv4. global unicast address
IPv6 Address: These are like private IPv4 addresses, but they aren't meant to be routed and are unique for each link (LAN). link-local address
IPv6 Address: Intended for non-routing (public internet) use but are nearly globally unique. They allow communication throughout a site, while being routable to multiple local networks. Similar to link-local but routable. unique local address
IPv6 Address: packets with this address are delivered to all interfaces identified by the address. multicast
IPv6 Address: Similar to multicast, this address identifies multiple interfaces. The difference is that the packet is only delivered to one interface-that is the one nearest in terms of routing distance. anycast
IPv6 Special Addresses: 0:0:0:0:0:0:0:0 or ::0 Equivalent of IPv4 0:0:0:0 and is typically the source address of a host when you're using stateful configuration (DHCP)
IPv6 Special Addresses: 0:0:0:0:0:0:0:1 or ::1 Loopback address (127.0.0.1)
IPv6 Special Addresses: 0:0:0:0:192:168:100:1 This is how an IPv4 address would be written in a mixed IPv4/IPv6 environment.
2000::/3 The global unicast range
FC00::/7 The unique local unicast range
FE80::/10 The link-local unicast range
FF00::/8 The multicast range
3FFF:FFFF::/32 Reserved for examples and documentation
2001:0DB8::/32 Also reserved for examples and documentation
2002::/16 Used with 6to4, a transition system structure that allows IPv6 packets to be transmitted over an IPv4 network without the need to configure explicit tunnels.
Benefits of subnetting. List 4. 1. Reduced network traffic 2. Optimized network performance 3. Simplified management 4. Facilitated spanning of large geographical distances.
CIDR Subnet Mask Range: Class A /8 through /15
CIDR Subnet Mask Range: Class A or B /16 through /23
CIDR Subnet Mask Range: Class A, B, or C /24 through /30
Created by: douros05
 

 



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