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After 11.1

After 11.1. Last modified 12-2-10. What type of OSPF packets are used to establish neighbor adjacencies?. Hello DBD LSR LSU LSAck. 1 of 4. How often are OSPF hello packets sent on point-to-point serial links by default?. 5 seconds 10 seconds 15 seconds 30 seconds Something else.

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After 11.1

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  1. After 11.1 Last modified 12-2-10

  2. What type of OSPF packets are used to establish neighbor adjacencies? • Hello • DBD • LSR • LSU • LSAck 1 of 4

  3. How often are OSPF hello packets sent on point-to-point serial links by default? • 5 seconds • 10 seconds • 15 seconds • 30 seconds • Something else 2 of 4

  4. A router has three possible routes to the same internal network: one from RIP, one from OSPF, and one from EIGRP. All ADs are at default values. Which one will be placed into the routing table? • RIP • OSPF • EIGRP • More than one route will be placed into the routing table • None of the above 3 of 4

  5. How many of these values must match for routers to form an OSPF adjacency? • Hello interval • Router ID • Dead interval • Hold-down interval • DR • None • 1 • 2 • 3 • Some other number 4 of 4

  6. After 11.2

  7. Which commands correctly configure this router? • router ospf 1net 172.16.1.0net 10.0.0.0 • router ospf 0net 172.16.1.0 0.0.0.255 area 0net 10.0.0.0 0.0.0.3 area 0 • router ospf 1net 172.16.1.0 0.0.0.255 area 0net 10.0.0.0 0.0.0.3 area 0 • router ospf 1net 172.16.1.0 0.0.0.255 area 2net 10.0.0.0 0.0.0.3 area 3 • More than one of the above

  8. Which commands correctly configure R1, if R2 and R3 are configured to use OSPF process-id 2, area 0? • router ospf 2net 172.16.1.0 0.0.0.255 area 0net 10.0.0.0 0.0.0.3 area 0 • router ospf 1net 172.16.1.0 0.0.0.255 area 0net 10.0.0.0 0.0.0.3 area 0 • router ospf 1net 172.16.1.0 0.0.0.255 area 2net 10.0.0.0 0.0.0.3 area 2 • More than one of the above • None of the above

  9. Which commands correctly configure R1, if R2 and R3 are configured to use OSPF process-id 2, area 0? • router ospf 2net 172.16.1.0 0.0.0.255 area 0net 10.1.1.0 0.0.0.3 area 0net 10.2.2.0 0.0.0.3 area 0 • router ospf 1net 172.16.1.0 0.0.0.255 area 0net 10.1.1.0 0.0.0.3 area 0net 10.3.3.0 0.0.0.3 area 0 • router ospf 1net 172.16.1.0 0.0.0.255 area 2net 10.1.1.0 0.0.0.3 area 2net 10.3.3.0 0.0.0.3 area 2 • More than one of the above • None of the above

  10. No router-id command has been used. What is this router's OSPF Router ID? • 172.16.1.1 • 10.1.1.1 • 10.3.3.1 • Something else Interface IP-Address OK? Method Status Protocol FastEthernet0/0 172.16.1.1 YES manual up up Serial0/0/0 10.1.1.1 YES manual down down Serial0/0/1 10.3.3.1 YES manual down down

  11. No router-id command has been used. What is this router's OSPF Router ID? • 172.16.1.1 • 10.1.1.1 • 10.3.3.1 • Something else Interface IP-Address OK? Method Status Protocol FastEthernet0/0 172.16.1.1 YES manual administratively down down Serial0/0/0 10.1.1.1 YES manual up up Serial0/0/1 10.3.3.1 YES manual up up

  12. No router-id command has been used. What is this router's OSPF Router ID? • 172.16.1.1 • 10.1.1.1 • 10.3.3.1 • 2.67.200.1 • Something else Interface IP-Address OK? Method Status Protocol FastEthernet0/0 172.16.1.1 YES manual administratively down down Serial0/0/0 10.1.1.1 YES manual up up Serial0/0/1 10.3.3.1 YES manual up up Loopback1 2.67.200.1 YES manual up up

  13. After 11.3

  14. You have serial links of varying speeds. When should you use the bandwidth command? • To properly route traffic with EIGRP • To properly route traffic with OSPF • To properly route traffic with RIPv2 • More than one of the above • None of the above 1 of 2

  15. When should you use the ipospf cost command instead of the bandwidth command? • For serial links slower than 1.544 Mbps • To properly route with OSPF • To properly route with non-Cisco routers • More than one of the above • None of the above 2 of 2

  16. After 11.4

  17. What type of links are used in this network? • Point-to-point • Broadcast Multiaccess • NonbroadcastMultiaccess (NBMA) • Point-to-multipoint • Virtual links

  18. What is the DR in this OSPF network? • R1 is the DR • R2 is the DR • R3 is the DR • There is no DR • The answer cannot be determined

  19. A link on R1 changes state on this OSPF network, and sends out an LSU. How many copies of that LSU does R4 receive? • None • 1 • 2 • 3 • Some other number

  20. How many of these values affect DR choice in an OSPF election? • OSPF interface priority • Bandwidth • Delay • Router ID • 0 • 1 • 2 • 3 • Some other number

  21. This network uses OSPF. How many of these routers are DROthers? • None • 1 • 2 • 3 • Some other number

  22. After 11.5

  23. How many of these values are used to calculate the OSPF metric? • Bandwidth • Delay • Reliability • Load • 0 • 1 • 2 • 3 • 4 1 of 3

  24. Which adjustment can make OSPF converge faster, but will create more network traffic? • Change reference bandwidth • Redistribute default route • Modify intervals • Use multiple areas • Assign costs manually 2 of 3

  25. Which adjustment is needed to properly route networks with gigabit links? • Change reference bandwidth • Redistribute default route • Modify intervals • Use multiple areas • Assign costs manually 3 of 3

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