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Cisco 11
| Question | Answer |
|---|---|
| IPv4 address | a 32-bit hierarchical address |
| Subnet mask | this is used to identify the network/host portion of the IPv4 address |
| default gateway IPv4 address | required to reach remote networks |
| DNS server IPv4 address | required to translate domain names to IPv4 address |
| ANDing | process used to identify the network portion and host portion |
| prefix length | how many host bits and network bits there are in a subnet mask |
| slash notation | A forward slash (/) followed by the number of bits set to 1 |
| network address | (also referred to as a prefix or network prefix) is an address that represents a specific network |
| IPv4 host portion (ex, 192.168.10.(10)) | identifies a specific device within a local network |
| Subnet mask (255.255.255.0) | used to identify the network/host portion of the IPv4 address |
| Class A private ip address range | 10.0.0 to 10.255.255.255 |
| host address | addresses that can be assigned to a device (and is the 0 bits in the subnet mask portion of an address) |
| first host address | is between the network address and broadcast address (has all 0 bits with the last bit as a 1 bit) |
| last host address | has all 1 bits with the last bit as a 0 bit |
| broadcast address | is an address that is used when it is required to reach all devices on the IPv4 network |
| unicast | when one device sends a message to another device in one-to-one communications |
| broadcast | a device sending a message to all the devices on a network in one-to-all communications |
| multicast | a host sending a single packet to selected set of hosts that subscribe to its group |
| public IPv4 address | addresses which are globally routed between internet service provider routers |
| private IPv4 address | addresses are not unique and can be used internally within any network |
| network address translation | is used to translate between private IPv4 and public IPv4 addresses |
| loopback address | special addresses used by a host to direct traffic to itself |
| link-local address | used by a windows DHCP client to self-configure in the event that there are no DHCP servers available |
| class A | designed to support extremely large networks with more than 16 million host addresses. |
| class B | designed to support the needs of moderate to large size networks with up to approximately 65,000 host addresses |
| class C | designed to support small networks with a maximum of 254 hosts |
| classful addressing | was an effective means to allocate addresses. |
| classless addressing | ignores the rules of classes. public IPv4 network addresses are allocated based on the number of addresses that can be justified |
| internet assigned numbers authority | manages and allocates blocks of IP addresses to the regional internet registries |
| regional internet registries | are responsible for allocating IP addresses to ISP |
| Class B private address range | 172.16.0.0 to 172.31.255.255 |
| Class C private address range | 192.168.0.0 to 192.168.255.255 |