969 お客様のコメント
質問 1：
Regarding the port status and role in RSTP, which of the following is correct? (Multiple choice)
A. There are three states for ports in RSTP. After a port enters the Learning state, it starts to send and receive BPDUs and determines the port role.
B. The Discarding port in RSTP is like the Blocking port in STP. When the port is in the Discarding state, it will not send BPDU, but will receive BPDU.
C. The definitions of root port and designated port in RSTP are the same as those in STP.
D. In RSTP, the Alternate port is used to back up the root port, and the Backup port is used to back up the designated port.
正解：C,D
質問 2：
In PIM-DM networking, which of the following are incorrect descriptions of routers sending Jon messages? (Multiple choice)
A. PIM-DM routers do not send Join messages
B. The Join message in PIM-DM is only used to veto the Prune message.
C. After the router RPF interface receives the Prune message, it immediately sends a Join message to the upstream RPF neighbor.
D. The party that fails the Assert will send a Join message to the winning party
E. When a receiver joins the PIM-DM router, it sends a Jon message to the upstream RPF neighbor.
正解：A,B,C,D
質問 3：
When configuring MSTP, the configuration steps in the regional view include? (Multiple choice)
A. Use the revsion command to configure the revision level
B. Configure the preferred root bridge and backup root bridge of the instance
C. Configure the mapping between VLAN and instance
D. Use the region-name command to configure the domain name
正解：A,C,D
質問 4：
In PIM-DM networking, which of the following is correct about the router sending the Prune message?
A. When the router has no local directly connected multicast receiver, it sends a Prune message to all PIM neighbors.
B. The party that fails the Assert will send a
C. After the router interface receives the Prune message, it will no longer send messages of the corresponding multicast group on this interface.
D. When the outbound interface list in the router (S, G) table is empty, a Prune message is sent to all PIM neighbors.
正解：B
質問 5：
Which of the following statements about STP bridge ID is correct?
A. The bridge ID consists of the bridge MAC address and the priority field. When comparing bridge IDs, the MAC address is compared first, and the one with the smaller MAC address value is preferred.
B. The bridge with the smallest bridge ID in the network will eventually become the root bridge after STP calculation.
C. The MAC addresses of SWA and SWB are 00-E0-FC-00-00-11 and 00-E0-FC-11-00-11 respectively, and their priorities are 32768 and 4096, when SWA and SWB are connected in a ring network and the spanning tree protocol is enabled, SWA will become the root bridge.
D. The bridge priority field is 2 bytes long, so the bridge priority value range is 0-65535
正解：B
Regarding the port status and role in RSTP, which of the following is correct? (Multiple choice)
A. There are three states for ports in RSTP. After a port enters the Learning state, it starts to send and receive BPDUs and determines the port role.
B. The Discarding port in RSTP is like the Blocking port in STP. When the port is in the Discarding state, it will not send BPDU, but will receive BPDU.
C. The definitions of root port and designated port in RSTP are the same as those in STP.
D. In RSTP, the Alternate port is used to back up the root port, and the Backup port is used to back up the designated port.
正解：C,D
質問 2：
In PIM-DM networking, which of the following are incorrect descriptions of routers sending Jon messages? (Multiple choice)
A. PIM-DM routers do not send Join messages
B. The Join message in PIM-DM is only used to veto the Prune message.
C. After the router RPF interface receives the Prune message, it immediately sends a Join message to the upstream RPF neighbor.
D. The party that fails the Assert will send a Join message to the winning party
E. When a receiver joins the PIM-DM router, it sends a Jon message to the upstream RPF neighbor.
正解：A,B,C,D
質問 3：
When configuring MSTP, the configuration steps in the regional view include? (Multiple choice)
A. Use the revsion command to configure the revision level
B. Configure the preferred root bridge and backup root bridge of the instance
C. Configure the mapping between VLAN and instance
D. Use the region-name command to configure the domain name
正解：A,C,D
質問 4：
In PIM-DM networking, which of the following is correct about the router sending the Prune message?
A. When the router has no local directly connected multicast receiver, it sends a Prune message to all PIM neighbors.
B. The party that fails the Assert will send a
C. After the router interface receives the Prune message, it will no longer send messages of the corresponding multicast group on this interface.
D. When the outbound interface list in the router (S, G) table is empty, a Prune message is sent to all PIM neighbors.
正解：B
質問 5：
Which of the following statements about STP bridge ID is correct?
A. The bridge ID consists of the bridge MAC address and the priority field. When comparing bridge IDs, the MAC address is compared first, and the one with the smaller MAC address value is preferred.
B. The bridge with the smallest bridge ID in the network will eventually become the root bridge after STP calculation.
C. The MAC addresses of SWA and SWB are 00-E0-FC-00-00-11 and 00-E0-FC-11-00-11 respectively, and their priorities are 32768 and 4096, when SWA and SWB are connected in a ring network and the spanning tree protocol is enabled, SWA will become the root bridge.
D. The bridge priority field is 2 bytes long, so the bridge priority value range is 0-65535
正解：B
天野** -
本当に助かりました。読み易く、飽きずに楽しくGB0-372-ENU試験対策問題を学べています。