QUESTION: 89

Although the STP protocol can solve the loop problem, it affects the quality of user communication due to the slow convergence of the network topology. RSTP has made many improvements to STP, which of the following is not an improvement of RSTP to STP?

In addition to the 3 port states, RSTP vice adds 2 new port roles
Non-root switches running RSTP send configuration BPDUs at intervals specified by Hello Timer, a behavior that is entirely autonomous for each device
RSTP port state specification is divided according to whether the port forwards user traffic and learns the MAC address, reducing the original 5 port states to 3
If a port does not receive a configuration BPDU sent by the upstream device for 4 consecutive Hello Time, the device considers the negotiation with this neighbor to fail

Answer(s): D

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QUESTION: 90

The following statement about OSPF route filtering is incorrect.( Single choice questions).

In the NSSA area, filtering for external route ingestion and advertisement can be configured on ASBR or ABR
Filtering for the three types of LSAs needs to be configured on the ABR across OSPF regions
Interface-based filtering of LSAs allows all LSAs in the inbound and outbound directions except grace LSAs
Based on the link state database, when calculating routes, the fiter-policy import command is used, which only affects the route addition in the route table, and has no effect on the OSPF link state database

Answer(s): C

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QUESTION: 91

You need to configure smart policy routing on the router to specify that specific traffic is forwarded through an interface. When policy-based routing is applied, what are the two most typical types of information that can be used to forward traffic along a particular path?