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12 Cards in this Set
- Front
- Back
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Aggregation
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AKASummarization (Supernetting), also called route aggregation, allowsrouting protocols to advertise many networks as one address. Thepurpose of this is to reduce the size of routing tables on routers tosave memory, which also shortens the amount of time IP requires toparse the routing table when determining the best path to a remotenetwork.
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ARP
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Aprotocol to map IP network addresses to the hardware addresses usedby a data link protocol. The protocol operates below the networklayer as a part of the interface between the OSI network and OSI linklayer.
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Classful
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Routingprotocols that do not send subnet mask information when a routeupdate is sent out
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Ipconfig/all
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Thecommand ipconfig /all will display your PC network configuration froma DOS prompt, and arp -a (again from a DOS prompt) will displayIP-to-MAC-address mapping on a Windows PC.
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PING
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UsesICMP echo request and replies to test if a node IP stack isinitialized and alive on the network.
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RIP
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RoutingInformation Protocol: The most commonly used interior gatewayprotocol in the Internet. RIP employs hop count as a routing metric.See also: Enhanced IGRP, IGP, OSPF, and hop count.
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arp-a
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DisplaysIP-to-MAC-address mappings on a Windows PC.
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showip arp
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Samefunction as arp -a, but displays the ARP table on a Cisco router.Like the commands traceroute and tracert, arp -a and show ip arp arenot interchangeable through DOS and Cisco.
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TRACEROUTE
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Displaysthe list of routers on a path to a network destination by using TTLtime-outs and ICMP error messages. This command will not work from acommand prompt
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VLSM
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Variablelength subnet mask: Helps optimize available address space andspecify a different subnet mask for the same network number onvarious subnets. Also commonly referred to as “subnetting asubnet.”
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Whatis CDP? How do you enable it? How do you disable it?
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CiscoDiscovery Protocol: Cisco’s proprietary protocol that is used totell a neighbor Cisco device about the type of hardware, softwareversion, and active interfaces the Cisco device is using. It uses aSNAP frame between devices and is not routable.
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Youhave the network IDs 111.2.86.0, 111.2.87.0, 111.2.89.0, 111.2.91.0.What would the best mask be?
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111.2.86.0– 0110111100000010 01010110 00000000
111.2.87.0– 0110111100000010 01010111 00000000 111.2.89.0– 0110111100000010 01011001 00000000
111.2.91.0– 0110111100000010 01011011 00000000 Block16128+64+32+16=240 SupernetMask: 255.255.240.0 |
