CCNA 2 Final Review Word Scramble
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| Question | Answer |
| key functions of a router | switching from interfaces acting as intersection between multiple networks forwards packets to destination network |
| what do these components of routers do? NVRAM RAM(SD RAM) Flash ROM | NVRAM: where startup config is stored RAM(SD RAM): where routing tables and mac addresses are stored (goes away when turned off) Flash: where IOS is stored ROM: a limited, stripped down IOS for emergencies |
| four steps to router bootup (in order) | 1. power on self test (POST) 2. bootstrap check 3. loads IOS from flash 4. startup configuration from NVRAM |
| how do you identify a: Level 1 route ultimate route parent child | ultimate: has out going interface or next hop IP level 1: classful or supernetted, ultimate child: always an ultimate route, and supernetted parent: no outgoing interface, always classful or supernetted |
| how do you select the routing protocol if there are more than one that lead to the same destination network? | Pick the protocol with the lowest administrative distance (EIGRP) |
| What are the characteristics of a link-state routing protocol | 1. updates are sent to everybody in a network 2. sends updates periodically/only when needed 3. complete topological view of network 4. uses dijkstra shortest route first |
| what information can be learned from the show ip route command? | 1. which routing protocols used (can tell by administrative distance) 2. networks 3. metrics |
| what is the purpose of a metric in a routing protocol? | to compare and determine the best route |
| what are the default metrics for these routing protocols: RIP EIGRP OSPF | RIP: hop count EIGRP: bandwidth & delay OSPF: cost (inverse of bandwidth) |
| what do these metric values measure? hop count cost bandwidth | hop count: how many routers are between you and the destination network cost: the value to indicate preference for a route bandwidth: speed of a link |
| what do these metric values measure? delay load reliability | delay: the time difference of what it takes and what it should take load: the amount of data/traffic on a link reliability: the amount of errors on a link |
| which routing protocols support VLSM and therefore discontiguous networks? | OSPF EIGRP ISIS RIPv2 |
| which two devices can be used to connect to the internet? | modem (for DCE devices) CSUDSU (digital modems) |
| When should these cables be used? patch (straight-through) crossover rollover | patch (straight-through): unlike devicecs crossover: like devices *except computer--router or switch--hub rollover: console port on route--serial port on computer |
| which port should be used to configure a new router or one that has been erased? | console port |
| how do you access these router prompt modes? user exec privilege exec global config interface | user exec: (the initial mode) privilege exec: enable global config: config t interface: interface fa0/0 (or whatever interface) |
| what information can be obtained from the show interface fastEthernet command? | the mac address of outgoing interfaces |
| which is the routing protocol or traffic forwarding that has the lowest overhead or uses the least resources? | static route |
Created by:
sound_fury