多項選擇題Which three are advantages to creating multiple areas in OSPF? (Choose three.) Select 3 response(s)?()

A. less frequent SPF calculations
B. fewer hello packets
C. smaller routing tables
D. reduced LSU overhe ad
E. fewer adjacencies needed


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1.單項選擇題Which show command will display only the Type 5 LSAs in the OSPF topology database?()

A. show ip ospf database external
B. show ip ospf database nssa - external
C. show ip route ospf
D. show ip ospf datab ase summary
E. show ip route

2.單項選擇題

Refer to the diagram. Which OSPF configuration command is required to configure Area 3 a s atotally stubby area?()

A. On the ABR router ospf 10 area 3 stub
B. On all Area 3 routers router ospf 10 area 3 stub
C. On all Area 3 routers router ospf 10 area 3 stub no - summary
D. On the ABR router ospf 10 area 3 nssa
E. On the ABR rou ter ospf 10 area 3 stub no - summary

3.單項選擇題

The Dev - 1 and Dev -3 routers are OSPF neighbors over the Ethernet 0/0 connection. Based on the show ip ospf neighbor output from the Dev - 1 and Dev - 3 routers, which statement is true?()

A. Dev - 1 is the DR because it has a lower OSPF router ID
B. Dev - 3 is the DR because it has a higher OSPF router priority
C. Both Dev - 1 and Dev - 3 are using the def ault OSPF router priority
D. Dev - 3 is the DR because it has a lower OSPF router ID
E. Dev - 1 is the DR because it has a higher OSPF router priority

4.單項選擇題

During a recent OSPF election among three routers, RTA was elected the DR and RTB was elected the BDR, as seen in the graphic. Assume that RTA fails, and that RTB takes the place of
the DR whi le RTC becomes the new BDR. What will happen when RTA comes back online?()

A. A new election will take place establishing an all new DR and BDR based on configured priority levels and MAC addresses.
B. RTA will take the place of DR immediately upon esta blishing its adjacencies.
C. RTA will take the place of DR only if RTB fails.
D. RTA will take the place of DR only if both RTB and RTC fail.

5.單項選擇題Which command displays the number of times that the OSPF Shortest Path First (SPF) algorithm has been executed?()

A. show ip protocol
B. show ip ospf
C. sho w ip ospf database
D. show ip ospf interface

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Router R1 has the following configuration. Assuming R1's F0/0 interface has a MAC address of 0200.0011.1111, what IPv6 addresses will R1 list for interface F0/0 in the output of the show ipv6 interface brief command?()interface f0/0ipv6 address 2345:0:0:8::1/64

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Router R1 use s MAC address 1111.1111.1111 for its Fa0/0 interface. An engineer sees the following configuration in the output of a show running - config command. Then, the engineer issues a show ipv6 interface brief command. What global unicast IPv6 address does this c ommand display for interface tunnel 1?()interface loopback 1ip address 192.168.1.1 255.255.255.255interface tunnel 1tunnel source loopback 1tunnel destination 192.168.1.2tunnel mode ipv6ip isatapipv6 address 2000::/64 eui - 64

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Router R1 currently has no configuration related to IPv6 or IPv4. The following configuration exists in a planning document, intended to be used to copy/paste into Router R1 to enable RIPng and IPv6 on interfaces F0/0 and S0/0/0. No other related configuration exists. Which of the following is true about RIPng on R1 after this configuration has been pasted into R1?()ipv6 unicast- routinginterface f0/0ipv6 rip one enableipv6 address 2000::1/64interface s0/0/0ipv6 address 2001::/64 eui - 64ipv6 rip one enable

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The following output occurs on Router R1 , which runs both EIGRP for IPv6 and OSPFv3, with redistribution from EIGRP into OSPF configured with the redistribute eigrp 1 metric 25 command. Interface S0/0/1 has been enabled for EIGRP ASN 1. Which of the following should be true of redistribution in  this case?()D 2000::/64 [90/1422516]via FE80::213:19FF:FE7B:5026, Serial0/0/1C 2000:0:0:1::/64 [0/0]via Serial0/0/1, directly connectedL 2000::1:213:19FF:FE7B:5004/128 [0/0]via Serial0/0/1, receive

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An ISP has assigned prefix 3000:1234:5678::/48 to Company1. Which of the following terms would typically be used to describe this type of public IPv6 prefix?()

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Which of the following is the shortest valid abbreviation for FE80:0000:0000:0000:0010:0000:0000:0123?()

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Which of the following is helpful to allow an IPv6 host to learn the IP address of a default gateway on its subnet?()

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Which of the following IPv6 tunneling mechanisms support IPv6 IGP routing protocols?()

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