多项选择题

Which three characteristics apply to IS - IS but not to OSPF?（）

A. uses a default IOS metric of 10 on each interface
B. uses an on - demand circuit to reduce the hello and LSA flooding across switched WAN li nks,such as ISDN
C. uses a DIS and a backup DIS to present the psuedo - node on the LAN
D. encapsulates PDUs directly into a data - link frame
E. uses stubby areas to improve network scalability
F. runs PRC (Partial Route Calculations) to calculate IP re achability information

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热门试题

单项选择题Why should iBGP sessions be fully meshed within a Transit AS?（）

A. BGP requires redundant TCP sessions between iBGP peers.
B. Routes learned via eBGP are never propagated to other iBGP peers.
C. A full mesh allows for optimal routing within the Transit AS.
D. Routes learned via iBGP are never propagated to other eBGP peers.
E. Routes learned via iBGP are never propagated t o other iBGP peers.

单项选择题Given the network diagram, which address would successfully summarize only the networks seen? （）

A. 192.168.0.0/24
B . 192.168.8.0/20
C. 192.168.8.0/21
D. 192.168.12.0/20
E. 192.168.16.0/21
F. These networks cannot be summarized.

单项选择题Which routing protocol will continue to receive and process routing updates f rom neighbors after the passive - interface router configuration command is entered?（）

A. EIGRP
B. RIP
C. OSPF
D. IS - IS

多项选择题Refer to the exhibit. OSPF is configured on all routers in the network. Area 5 is configured as an NSSA areA. The RIPv2 routes are redistributed into the OSPF domain on router R5. What two types of LSAs will be originated by router R5?（）

A. type 1 Router LSA
B. type 2 Network LSA
C. type 3 Network Summary LSA
D. type 4 ASBR Summary LSA
E. type 5 AS External LSA
F. type 7 NSSA External LSA

单项选择题Refer to the exhibit. What additional commands should be used to configure OSPF area 5 as a Totally Stubby area? （）

A. area 0 stub o n routers R4 and R5
B. area 5 stub on routers R4 and R5
C. area 5 stub no - summary on routers R4 and R5
D. area 0 stub no - summary on router R4 and area 5 stub no - summary on router R5
E. area 5 stub no - summary on router R4 and area 5 stub on router R5