Online Access Free GB0-371-ENU Practice Test

Regarding the multicast distribution tree model SPT, the correct statement below is ______.

• A.Each router on the SPT will maintain (S, G) entries
• B.Each router on the SPT will maintain (*, G) entries
• C.In the SPT model, the path taken by the multicast source to reach any receiver is optimal
• D.Different multicast sources take themselves as the root and establish SPT independently

The customer requires that during network design, there must be high-reliability equipment in key parts, and the reliability of the equipment should reach 99.999%.

• A.Failure time per year does not exceed 6 minutes
• B.Failure time per year does not exceed 3 minutes
• C.Failure time does not exceed 1 minute per year
• D.Failure time per year does not exceed 9 minutes

The customer LAN switches SWA, SWB, and SWC form the RRPP ring main ring 1. If the switches SWB, SWC and SWD form sub-ring 2, the above information can be derived

• A.If the switch SWA is the master node of the primary ring, it can initiate Link-Down packets
• B.If the switch SWA is the master node of the primary ring, it can initiate a Health message
• C.If the switch SWB is the edge node of the sub-ring, it can initiate Edge-Hello packets
• D.If the switch SWB is the edge node of the sub-ring, it can initiate Maior-Fault packets

Which of the following descriptions about exact matching switches and longest matching switches is correct?

• A.The longest matching switch replaces the software routing table with hardware entries, and follows the longest matching principle when searching. In the case of extremely serious network worms, it can still guarantee the wire-speed forwarding of IP packets
• B.The longest matching switch uses software to search the routing table for
• C.The exact matching switch searches the routing table through software for packet-by-packet forwarding
• D.The exact matching switch is to complete the forwarding of subsequent packets through hardware after the first packet is searched and processed by software, but it cannot cope with the impact of worms on routing

Which of the following multicast group management protocols can support the SSM model-(choose one or more)

• A.IGMPvl
• B.IGMPV2
• C.MLDV2
• D.MLDvl
• E.IGMPV3