Cisco,CCNA,CCENT,CCNP,And,Comp computer Cisco CCNA, CCENT, CCNP, And CompTIA Questions: HSRP, OSPF
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Let's test your knowledge of important CCNA, CCENT, CCNP, and Network+ exam topics!CCNA Certification:The term used for an OSPF path metric is ____________ .Extra credit: What formula does OSPF use to calculate that metric?Answer: OSPF's metric is referred to as cost, and the calculation is 100,000,000 / interface speed in bps.Cisco CCENT / CompTIA Network+ Question:Which of the following do TCP and UDP headers have in common?A. sequence numberB. source portC. source IP addressD. windowE. destination portF. destination IP addressG. ACK bitH. reset bitAnswer: B, E. In addition to the source port and destination port numbers, the UDP and TCP headers also have a checksum field in common.CCNP Certification / BSCI Exam:In ISIS, what is the most efficient point of a network at which to perform route summarization?A. An L1 router.B. An L2 router.C. An L1/L2 router.D. A DIS router.Answer: C. L1/L2 routers are area boundary routers in ISIS, and this is the most efficient point at which to configure route summarizationCCNP Certification / BCMSN Exam:Short answer: An HSRP router is the primary router and it has a priority of 100. Another router comes online in the same group and it has a priority of 107. Does the new router become the primary? If so, why? If not, what additional configuration is needed to make it the primary?Answer. By default, the new router with the higher priority will not become the primary router. To allow a router with a higher priority to take over the role of HSRP primary from an existing and normally functioning primary, the preempt option must be configured on the router with the higher priority.Let's use a two-router HSRP deployment as an example. R2 is the standby, R3 is the primary ("active"), and both have an HSRP priority of 100. Raising R2's priority to 150 does not automatically make it the primary, as shown below.R2(config)#interface ethernet0R2(config-if)#standby 5 priority 150R2#show standbyEthernet0 - Group 5Local state is Standby, priority 150Hellotime 4 sec, holdtime 12 sec Next hello sent in 0.896Virtual IP address is 172.12.23.10 configuredActive router is 172.12.23.3, priority 100 expires in 8.072Standby router is local 1 state changes, last state change 00:14:24R2 now has a higher priority, but R3 is still the active router. R2 will not take over as the HSRP primary until R3 goes down - OR the preempt option is configured on R2.R2(config-if)#standby 5 priority 150 preempt1d11h: %STANDBY-6-STATECHANGE: Ethernet0 Group 5 state Standby -> ActiveR2#show standbyEthernet0 - Group 5Local state is Active, priority 150, may preemptHellotime 4 sec, holdtime 12 sec Next hello sent in 1.844Virtual IP address is 172.12.23.10 configuredActive router is localStandby router is 172.12.23.3 expires in 10.204Virtual mac address is 0000.0c07.ac05 2 state changes, last state change 00:00:13 That's enough for today! Look for more free Cisco and CompTIA certification exam questions on this website soon! A+ certification and Microsoft Vista certification practice questions are on the way as well!
Cisco,CCNA,CCENT,CCNP,And,Comp