GB0-372-ENU Exam Study Guide Free Practice Test LAST UPDATED DATE Jan 06, 2025
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NEW QUESTION # 102
The customer's six switches SWA, SWB, SWC, SWD, SWE, and SWF are connected together through a LAN to form an RRPP ring. The RRPP status is checked on SWB as follows:
<SWB>dis rrpp verbose domain 1 Domain ID: 1
Ring ID: 1 Ring Level: 0
Node Mode: Transit Ring state: -
Enable Status: YesActive Status: Yes
Primary port: GigabitEthernet2/0/1 Port status: UP Secondary port: GigabitEthernet2/0/2 Port status: UP Ring ID :2 Ring Level: 1 Node Mode: Edge Ring state: - Enable Status: YesActive Status: Yes Common port: GigabitEthernet2/0/1 Port status: UP GigabitEthernet2/0/2 Port status: UP Edge port: GigabitEthernet2/0/3 Port status: UP Ring ID: 3 Ring Level: 1 Node Mode: Edge Ring state: - Enable Status: YesActive Status: Yes Common port: GigabitEthernet2/0/1 Port status: UP GigabitEthernet2/0/2 Port status: UP Edge port: GigabitEthernet2/0/4 Port status: UP What can we learn from the above information?
- A. GigabitEthernet2/0/1 is the edge port of RRPP sub-ring 2
- B. SWB is connected to 3 sub-rings
- C. GigabitEthernet2/0/4 is the edge port of RRPP sub-ring 3
- D. SWB is the transit node of RRPP sub-ring 2
Answer: C
NEW QUESTION # 103
As shown in the figure, the switches all run RSTP. Initially, SWA, SWB and SWC are interconnected through links 1, 2 and 3. When the network connection undergoes the following changes, which of the following is the correct statement?
- A. As shown in the figure, when SWB is connected to another switch SWD running RSTP, SWD will send RSTBPDU with TC set.
- B. As shown in the figure, when SWB is connected to another switch SWD running RSTP, SWB will send RSTBPDU with TC set.
- C. When the link between SWB and SWC is DOWN, both SWB and SWC will send RST BPDU with TC set.
- D. When the edge port EO/1 of SWC is connected to a PC, SWC will send a RST BPDU with TC set.
Answer: B
NEW QUESTION # 104
Which of the following is the multicast destination address of the Hello message in PIM?
- A. 224.0.0.9
- B. 224.0.0.13
- C. 224.0.0.5
- D. 224.0.0.21
Answer: B
NEW QUESTION # 105
Which of the following modules does VCFC have? (Multiple choice)
- A. VSM
- B. NEM
- C. Security
- D. NGFWM
Answer: A,B,D
NEW QUESTION # 106
Regarding the comparison between MSTP and RSTP, which of the following statements are correct? (Multiple choice)
- A. MSTP inherits all the fast
- B. The BPDU format used by MSTP and RSTP is the same
- C. The status and role of ports in MSTP and RSTP are exactly the same
- D. MSTP can achieve load sharing between VLANs
Answer: A,D
NEW QUESTION # 107
PIM-DM working mechanism includes? (Multiple choice)
- A. Neighbor Discovery
- B. Status refresh
- C. Assertions
- D. Switch from RPT to SPT
- E. Flooding, pruning, grafting
Answer: B,C,E
NEW QUESTION # 108
Regarding configuration BPDU and TCM BPDU, which of the following statements are correct?
(Multiple choice)
- A. Configuration BPDU is usually received only from the root port, and TCNBPDU is received only from the designated port
- B. Configuration BPDU is only sent from the designated port, and TCNBPDU is only sent from the root port.
- C. Alternate ports will neither send configuration BPDUs nor TCN BPDUs.
- D. Configuration BPDU is usually only sent periodically by the root bridge, while TCNBPDU may be sent by other bridges except the root bridge.
Answer: A,B,C,D
NEW QUESTION # 109
XYZ Company requires to build its network based on modular enterprise network architecture. XYZ Company has a research and development base in Shenzhen and Xi'an, an office building in Beijing and Shanghai, offices with more than 50 people in 23 provincial capitals, and technicians on business trips in
23 provincial capitals. Due to environmental and cost issues, some offices cannot connect to the headquarters through dedicated lines or packet switching wide area network connections. Based on these conditions, which of the following network module that XYZ Company should have? (Multiple choice)
- A. Large branch network
- B. Remote | Distributed Office Network
- C. Dedicated line and packet switching access
- D. VPN access
Answer: C,D
NEW QUESTION # 110
Which of the following understandings of VXLAN concepts are correct? (Multiple choice)
- A. VTEP is the starting and ending point of the VXLAN tunnel
- B. VXLAN packets will add an additional 50 bytes of overhead on top of the original packets
- C. VXLAN is just a type of overlay technology
- D. The original message is encapsulated in a TCP message after adding the VXLAN header
Answer: A,B,C
NEW QUESTION # 111
In the switching network shown in the figure, VLAN10 is set as Super VLAN on switch SWA, VLAN2 and VLAN3 are Sub VLANs of VLAN10, port Ethernet1/0/3 is a Trunk port, PVID is VLAN1, and all VLANs are allowed to pass; VLAN2~VLAN20 are created on switch SWB, port Ethernet1/0/4 is a Trunk port, PVID is VLAN1, and all VLANs are allowed to pass. After setting the IP addresses of each device as shown in the figure, it can be judged? (Multiple choice)
- A. None of the above answers are correct
- B. PCA can communicate with PCC
- C. PCA can communicate with SWA
- D. PCA can communicate with PCB
- E. PCA can communicate with SWB
Answer: B,C
NEW QUESTION # 112
In the above topology, if STP is enabled in the loop formed by SWA, SWB and SWC, then which of the following is correct? (Multiple choice)
- A. After STP converges, SWD is connected to the network through the dotted link 1 in the figure. SWD will first send a configuration BPDU with itself as the root. After the longest Hello Time, SWC will send a configuration BPDU with SWA as the root to SWD.
- B. Before joining SWD, after STP convergence, SWC will receive configuration BPDUs from both EO/1 and EO/2
- C. After STP converges, connect SWD to the network through the dotted link 1 in the figure. SWD will first send a configuration BPDU with itself as the root, and SWB will immediately respond with a configuration BPDU with SWA as the root.
- D. Before joining SWD, after STP convergence, SWB's port EO/2 is the alternate port
Answer: B,C
NEW QUESTION # 113
Which of the following statements is correct about the basic concept of MSTP? (Multiple choice)
- A. The domain root of CIST refers to the switch with the highest priority in a domain.
- B. The domain root of CIST is the root bridge of IST in a certain domain.
- C. CIST is a tree calculated by all switches in the network, and its root is the total root of the network.
- D. The root of CIST is the switch with the smallest bridge ID among all switches in the network.
Answer: B,C,D
NEW QUESTION # 114
In the networking model shown in the figure, if Accounting is received on RADIUSClient, then which of the following is correct? (Multiple choice)
- A. This message is sent by the RADIUS Server
- B. The message is sent by the Host
- C. This message is a stop billing response message
- D. This message is a start accounting response message
Answer: A,C
NEW QUESTION # 115
The customer's LAN switch SWA is connected to SWB via GigabitEthenet 2/0/1 and to SWC via GigabitEthernet 2/0/2, and the SWA switch has the following configuration:
[SWA] stp region-configuration
[SWA-mst-region] instance 0 vlan 1 to 100[SWA-mst-region] instance 2 vlan 101 to 200[SWA] smart-link group 1
[SWA-smlk-group1] protected-vlan reference-instance 0 [SWA-smlk-group1] port gigabitethernet 2/0/1 master [SWA-smlk-group1] port gigabitethernet 2/0/2 slave [SWA] smart-link group 2
[SWA-smlk-group2] protected-vlan reference-instance 2 [SWA-smlk-group2] port gigabitethernet 2/0/2 master [SWA-smlk-group2] port gigabitethernet 2/0/1 slave If the SWA, SWB, and SWC ports allow all VLANs to pass, what can we learn from the above information? (Multiple choice)
- A. The traffic of VLAN 102 on the SWA switch will be transmitted upstream through GigabitEthe 2/0/2
- B. The traffic of VLAN 2 on the SWA switch will be upstreamed through Gigabitethernet 2/0/2
- C. The traffic of VLAN 102 on the SWA switch will be upstreamed through Gigabitethernet 2/0/1
- D. The traffic of VLAN 2 on the SWA switch will be transmitted upstream through GigabitEthernet 2/0/1.
Answer: A,D
NEW QUESTION # 116
Which of the following statements about the generation of TCNBPDU is correct?
- A. When a switch port is selected as a designated port or root port, the switch will immediately send TCNBPDU
- B. If the alternate port of a switch in the network is down, the switch will not generate TCN BPDU
- C. If the link of a designated port of a switch in the network is broken, the switch will definitely generate a TCNBPDU
- D. If a port of a non-root bridge switch with STP enabled is connected to a PC, the switch will not generate TCN BPDU when the port enters the forwarding state.
Answer: B
NEW QUESTION # 117
In SDN networks, which of the following security functions are currently widely used? (Multiple choice)
- A. Security Policy
- B. Apply IPSec at network egress
- C. Security Management
- D. Security card
Answer: A,B,C
NEW QUESTION # 118
Which of the following elements may be included in the MAC address table of a switch? (Multiple choice)
- A. VLANID
- B. IP address
- C. MAC address
- D. Port number
- E. Aging time
Answer: A,C,D,E
NEW QUESTION # 119
Switch SWA uses the factory default configuration. Now configure the Ethernet 1/0/1 port of switch SWA as a Trunk port, with PVID of VLAN 20 and allowing VLAN 10.
which of the following is correct? (Multiple choice)
- A. [SWA] vlan10
[SWA-vlan10] quit
[SWA] vian 20
[SWA-vlan20] quit
[SWA] interface Ethernet 1/0/1
[SWA-Ethernet1/0/1] port link-type trunk
[SWA-Ethernet1/0/1] port trunk pvid vlan 20
[SWA-Ethernet1/0/1] port trunk permit vlan 10 - B. [SWA] interfaceEthernet 1/0/1
[SWA-Ethernet1/0/1] port link-type trunk
[SWA-Ethernet1/0/1] port trunk pvid vlan 20
[SWA-Ethernet1/0/1] port trunk permit vlan 10
[SWA-Ethernet1/0/1] quit
[SWA] vlan 10
[SWA-vlan10] quit
[SWA] vlan 20 - C. [SWA] vlan10
[SWA-vlan10] quit
[SWA] vlan 20
[SWA-vlan20] port Ethernet 1/0/1
[SWA-vlan20] quit
[SWA ] interface Ethernet 1/0/1
[SWA-Ethernet1/0/1] port link-type trunk
[SWA-Ethernet1/0/1] port trunk permit vlan 10 - D. [SWA] vlan10
[SWA-vlan10] quit
[SWA] vlan 20
[SWA-vlan20] quit
[SWA] interface Ethernet 1/0/1
[SWA-Ethernet1/0/1] port access vlan 20
[SWA-Ethernet1/0/1] port link-type trunk
[SWA-Ethernet1/0/1] port trunk permit vlan 10
Answer: A,B
NEW QUESTION # 120
Which of the following descriptions of the precautions for using mirror configuration on H3C S series switches are correct? (Multiple choice)
- A. The Probe VLAN of the remote port mirroring must be a manually created static VLAN
- B. A member port of an aggregation group cannot be configured as a destination port of a mirroring group.
- C. The reflector port of the remote mirror can also be used as a service port
- D. The same port can be configured in multiple mirroring groups
Answer: A,B
NEW QUESTION # 121
The NTP protocol is based on UDP transmission protocol messages, and its UDP port number is ().
Answer:
Explanation:
123
NEW QUESTION # 122
Contrast the calculation convergence of RSTP and STP. Which of the following statements is correct? (Multiple choice)
- A. If STP wants to shorten the convergence time, it can only configure a smaller ForwardDelay time, but this may affect the stability of the network.
- B. Compared with STP, RSTP defines edge ports, which can make the ports connected to the i machine quickly enter the forwarding state
- C. Compared with STP, STP defines a fast root port switching mechanism, which allows the Alternate to quickly become the new root port.
- D. Compared with STP, STP defines a fast switch mechanism for designated ports, which allows the designated port to quickly enter the forwarding state without waiting for twice the Forward Delay time.
Answer: A,B,C,D
NEW QUESTION # 123
When the host receives the GeneralQuery message from the IGMPV2 querier?
- A. The destination address of the Report message is 224.0.0.1
- B. The host immediately sends a MembershipReport message
- C. The destination address of the Report message is the same as the GroupAddress in the message
- D. The host will send a Membership Report message only after receiving a General Query.
Answer: C
NEW QUESTION # 124
Which of the following descriptions of the switch MAC address table learning process is correct?
(Multiple choice)
- A. The PC will actively send MAC address messages to the switch regularly
- B. When the switch receives an ARP reply message from a PC, it records the source MAC address.
- C. When a PC in the network sends a data frame, the switch records the source MAC address
- D. The switch regularly sends MAC address detection messages to the PC
Answer: B,C
NEW QUESTION # 125
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