更多"Which three restrictions apply to O"的相关试题:
[多项选择]Which three statements about OSPF areas are true?（）
A. Areas introduce a boundary on the link - state updates.
B. Areas are logical definitions specific to any given router.
C. All routers within an area have the exact link - state database.
D. The calculation of the Dijkstra algorithm on a router is limited to changes within an area.
E. The area designated router will always have a priority of 0.
[多项选择]Which three restrictions apply to OSPF stub areas？ （）
A. No virtual links are allowed.
B. The area cannot be a backbone area.
C. Redistribution is not allowed unless the packet is changed to a type 7 packet.
D. The area has no more than 10 routers.
E. No autonomous system border routers are allowed.
F. Interarea routes are suppressed.
[简答题]OSPF的STUB区域会过滤那几个类型的LSA？
[多项选择]OSPF Totall Stub区域中肯定不会注入（）类型的LSA。
A. Tpe3
B. Tpe4
C. Tpe5
D. Tpe7
[多项选择]OSPF stub areas are an important tool for the Network designer； which of the following two shouldbe considered when utilizing OSPF stub areas？ （）
A. OSPF stub areas increase the size of the LSDB with the addition of Type 3 and 5 LSAs
B. OSPF not so stubby areas are particularly useful as a simpler form of summarization
C. OSPF stub areas are always insulated from external changes
D. OSPF totally stubby cannot distinguish among ABRs for the best route to destinationsoutsidethe areas
E. OSPF stub areas can distinguish among ASBRs for destinations that are external to the OSPFdomain
[多项选择]Which three authentication options does OSPF support?（）
A. DES
B. MD5
C. Kerberos
D. unauthenticated
E. simple password
[多项选择]What are three characteristics of the OSPF routing protocol? （）
A. It converges quickly.
B. OSPF is a classful routing protocol.
C. It uses cost to determine the best route.
D. It uses the DUAL algorithm to determine the best route.
E. OSPF routers send the complete routing table to all directly attached routers.
F. OSPF routers discover neighbors before exchanging routing information.
[多项选择]关于OSPF协议的Stub区域和NSSA区域，以下说法不正确的有（）
A. Stub区域和NSSA区域都不允许注入Tpe5LSA
B. Stub区域和NSSA区域都允许注入Tpe4LSA
C. Stub区域中不允许存在ASBR，而NSSA区域中允许存在ASBR
D. Stub区域和NSSA区域都不能被虚连接穿越
[多项选择]关于OSPF协议中的Stub区域，下列说法正确的是（）
A. 骨干区域不能配置为Stub区域
B. 虚连接不能穿越Stub区域
C. Stub区域中不能存在ASBR
D. Stub区域中不允许注入Tpe7LSA
[判断题]在OSPF协议中规定骨干区域不能配置成STUB区域，虚连接不能穿过STUB区域。
[多项选择]OSPF Stub区域中肯定不会存在（）类型的LSA。
A. Tpe3
B. Tpe4
C. Tpe5
D. Tpe7
[多项选择]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
[多项选择]OSPF routing uses the concept of areas. What are the characteristics of OSPF areas?（）
A. Each OSPF area requires a loopback interface to be configured.
B. Areas may be assigned any number from 0 to 65535.
C. Area 0 is called the backbone area.
D. Hierarchical OSPF networks do not require multiple areas.
E. Multiple OSPF areas must connect to area 0.
F. Single area OSPF networks must be configured in area 1.
[单项选择]在OSPF 中，Stub area 与Total Stub area 的区别在于对哪类LSA 的处理不同（）
A. LSA type 1
B. LSA type 2
C. LSA type 3
D. LSA type 5
E. LSA type 7
[单项选择]在OSPF 中，NSSA 与Total Stub area 的区别在于对哪类LSA 的处理不同（）
A. LSA type 1
B. LSA type 2
C. LSA type 4
D. LSA type 5
E. LSA type 7
[判断题]在OSPF 中，NSSA 与Stub Area两者都不能引入LSA type5。
[多项选择]What are the three OSPF authentication methods supported on the ERX Edge Router？（）
A. null password
B. simple password
C. message digest 5
D. Password Authentication Protocol
E. Challenge Handshake Authentication Protocol
