单项选择题

One of the most important characteristics of OSPF is Multiple areas. Which statement best describes why this feature is such an important enhancement to earlier routing protocols?（）

A. The network domain, when divided into areas, allows for the use of both IANA classful addressing and private addressing.
B. The use of multiple areas allows for the use of prioritization.
C. All computation is kept within the area, with minimum communication between the areas,allowing the network to scale to larger sizes.
D. It is easier to implement security.

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单项选择题Which option is true regarding the synchronization rule ?（）

A. Do not use or internally advertise a route until the route is lear ned from a source other than BGP.
B. Do not use or advertise a route until the route is learned from a BGP peer.
C. Do not use or advertise routes marked PARTIAL.
D. Wait until a CONFIRM message is received before using routes from BGP neighbors.

多项选择题Refer to the exhibit. BigBids Incorporated is a worldwide auction provider. The network uses EIGRP as its routing protocol throughout the corporation. The network administrator does not understand the convergence of EIGRP. Using the output of the show ip eigrp topology all - links command, answer the administrators questions. Which three networks is the router at 172.17.10.2 directly connected to?（）

A. 172.17.0.0/30
B. 172.17.1.0/24
C. 172.17.2.0/24
D. 172.17.3 .0/25
E. 172.17.3.128/25
F. 172.17.10.0/24

多项选择题Refer to the exhibit. BigBids Incorporated is a worldwide auction provider. The network uses EIGRP as its routing protocol throughout the corporation. The network administrator does not understand the convergence of EIGRP. Using the output of the show ip eigrp topology all - links command, answer the administrators questions. Which three EIGRP routes will be installed for the 172.17.3.128 25 and 172.17.2.0 24 networks?（）

A. 172.17.3.128.25 [90/28160] via 172.17.1 2,01:26:35, FastEthernet0/2
B. 172.17.3.128/25 [90/30720] via 172.17.3.2,01:26:35. FastEthemet0/3
C. 172.17.3.128/25 [90/3 0720] via 172.17.10.2,01:26:35. FastEthernet0/1
D. 172.17.2.0/24 [90/30720] via 172.17.10.2,02:10:11, FastEthernet0/1
E. 172.17.2.0/24 [90/28160] via 172.17.10.2,02:10:11. FastEthernet0/1
F. 172.17.2.0/24 [90/33280] via 172.17.3.2,02:10:11. FastEthernet 0/3

多项选择题Which two networks does the SW1 device have feasible successors for?（）

A. 172.29.1.0/24
B. 10.19.0.0/24
C. 172.29.0.0/30
D. 172.29.2.0/24

单项选择题Which IS - IS router is equivalent to an ABR in OSPF?（）

A. Level 2 - 3
B. Level 1 - 2
C. Level 2
D. Level 0
E. Level 3
F. Level 1