Provides fast convergence times.
Supports connections of multiple backbones.
Eliminates the need for a Designated Router.
Supports non direct connections to the backbone.
第1题：
A.A single Control Connection and a single Session
B.A single Control Connection and multiple Sessions(one pers ubscriber)
C.Multiple Control Connections and a single Session
D.Multiple Control Connections and multiple Sessions(one per subscriber)
第2题：
Several links have been broken so th at for the next day or two, what was formerly a contiguous area 0 has been broken into two parts. However, both parts of area 0 have working links into area 1 using routers with RID 1.1.1.1 and 2.2.2.2.Which answers list the command on the router with RID 1.1.1.1 to create a virtual link to help solve this temporary problem?（）
A. area 0 virtual - link 2.2.2.2
B. area 1 virtual - link 2.2.2.2
C. area 0 source - rid 1.1.1.1 dest - rid 2.2.2.2
D. virtual - link transit - area 1 RID 2.2.2.2
第3题：
A.
B.
C.
D.
第4题：
When verifying OSPF virtual link problems, which is an important item to check on the two transit OSPF routers?（）
第5题：
A. Point-to-point
B. Point to multipoint
C. Broadcast
D. Non-broadcast multi-access
第6题：
A.0
B.1
C.2
D.3
第7题：
A. Nothing. OSPF will determine the most optimal path for routing data by default.
B. Adjust the hello and dead timers for more rapid detection of link failures.
C. Increase the reference - bandw idth used to calculate the interface default metrics, on all routers in your network.
D. Set the priority values on every broadcast interface to ensure that the designated and backup designated routers are the routers with the most processor and memory resources.
第8题：
A. Provides fast convergence times.
B. Supports connections of multiple backbones.
C. Eliminates the need for a Designated Router.
D. Supports non direct connections to the backbone.
第9题：
A.it reduces the number of required OSPF neighbor adjacencies
B.It reduces the types of LSAs that are generated
C.It is less CPU intensive for routers in the single area
D.It increases LSA response times.
E.It removes the need for virtual links
第10题：
On what kinds of networks does OSPF elect a backup designated router?（）