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Definition
| Addresses that can be used regardless of the type of physical networks used, providing each device (at least) one address. _______ enables the routing process to identify a packet’s source and destination. |
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Definition
| A protocol that aids routers by dynamically learning about the groups of addresses in the network, which in turn allows the routing (forwarding) process to work well. |
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Definition
| An application layer protocol used throughout the Internet for translating hostnames into their associated IP addresses. |
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Term
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Definition
| Dynamic Host Configuration Protocol |
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Term
| Dynamic Host Configuration Protocol (DHCP) |
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Definition
| A protocol used by hosts to dynamically discover and lease an IP address, and learn the correct subnet mask, default gateway, and DNS server IP addresses. |
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Term
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Definition
| Address Resolution Protocol |
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| Address Resolution Protocol (ARP) |
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Definition
| An Internet protocol used to map an IP address to a MAC address. Defined in RFC 826. |
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Definition
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| Packet Internet Groper (ping) |
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Definition
| An Internet Control Message Protocol (ICMP) echo message and its reply; ______ often is used in IP networks to test the reachability of a network device. |
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Term
| Default Gateway/Default Router |
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Definition
| A router’s Ethernet interface on a subnet. |
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Term
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Definition
| In IP Version 4 (IPv4), a 32-bit address assigned to hosts using TCP/IP. Each address consists of a network number, an optional subnetwork number, and a host number. |
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Term
| Network Broadcast Address |
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Definition
| In IPv4, a special address in each classful network that can be used to broadcast a packet to all hosts in that same classful network. Numerically, the address has the same value as the network number in the network part of the address, and all 255s in the host octets. |
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| Network Number/Network Address |
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Definition
| A number that uses dotted decimal notation like IP addresses, but the number itself represents all hosts in a single Class A, B, or C IP network. |
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Term
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Definition
| The portion of an IPv4 address that is either 1, 2, or 3 octets/bytes long, based on whether the address is in a Class A, B, or C network. |
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Term
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Definition
| A list of routes in a router, with each route listing the destination subnet and mask, the router interface out which to forward packets destined to that subnet, and, as needed, the next-hop router’s IP address. |
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Definition
| Subdivisions of a Class A, B, or C network, as configured by a network administrator. _____ allow a single Class A, B, or C network to be used instead of multiple networks, and still allow for a large number of groups of IP addresses, as is required for efficient IP routing. |
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Definition
| Any device that can send and receive packets. |
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Definition
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Term
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Definition
| The most widely used version of IP. Address exhaustion is expected mid-2011. IPv6 will be the new standard. |
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Term
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Definition
| Thinking of an IP address in three parts: network, subnet, and host. |
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Term
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Definition
| Routing process considers the network and subnet parts of the address together – each address has two parts: the part on which routing is based, and the host part. |
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Term
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Definition
| Internet Control Message Protocol |
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Term
| Internet Control Message Protocol (ICMP) |
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Definition
| Ping command uses this to send message called ICMP echo request. If they reply, it worked. ICMP does not rely on any application – it tests Layers 1, 2, and 3 of the OSI model. |
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Term
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Definition
| An IPv4 Class A, B, or C network; called a classful network because these networks are defined by the class rules for IPv4 addressing. |
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