Real GB0-371-ENU Exam PDF Test Engine Practice Test Questions
H3C GB0-371-ENU Real 2021 Braindumps Mock Exam Dumps
NEW QUESTION 193
The Layer 3 switch receives the data frame and performs the Layer 2/Layer 3 forwarding judgment
- A. If the destination MAC address of the data frame is not the MAC address of the VLAN interface of the switch, the switch will look up the MAC address table and do Layer 2 forwarding in the VLAN
- B. If the destination IP address and source IP address of the data frame are in the same network segment, the switch will do Layer 2 forwarding
- C. If the destination MAC address of the data frame is the MAC address of the VLAN interface of the switch, the switch will perform Layer 3 forwarding
- D. If the destination IP address and source IP address of the data frame are not in the same network segment, the switch will look up the routing table for Layer 3 forwarding
Answer: A,C
NEW QUESTION 194
The IP address of the host PCA is 40.1.1.1, the MAC address is 0011.1111.1111, and it is connected to the GigabitEthernet1/0/1 port of the switch SWA. The following commands are configured on the switch SWA:
[SWA]vlan 10
[SWA-vlan10]quit
[SWA]vlan 20
[SWA-vlan20]protocol-vlan ipv4
[SWA-vlan20]quit
[SWA]vlan 30
[SWA-vlan30]quit
[SWA]mac-vlan mac-address 0011-1111-1111 vlan 30
[SWA]vlan 40
[SWA-vlan40]ip-subnet-vlan ip 50.1.1.0 255.255.255.0
[SWA-vlan40]quit
[SWA]interface GigabitEthernet 1/0/1
[SWA-GigabitEthernet1/0/1]port link-type hybrid
[SWA-GigabitEthernet1/0/1]port hybrid pvid vlan 10
[SWA-GigabitEthernet1/0/1]port hybrid vlan 10 20 30 40 untagged
[SWA-GigabitEthernet1/0/1]port hybrid protocol-vlan vlan 20 0
[SWA-GigabitEthernet1/0/1]port hybrid ip-subnet-vlan vlan 40
[SWA-GigabitEthernet1/0/1]mac-vlan enable
[SWA-GigabitEthernet1/0/1]vlan precedence ip-subnet-vlan
After the configuration is complete, it can be judged that PCA will join
- A. VLAN 10
- B. VLAN30
- C. VLAN40
- D. VLAN20
Answer: B
NEW QUESTION 195
What is correct about the STP root bridge?
- A. There is no root port on the root bridge
- B. The root bridge refers to the bridge with the highest priority on a PhysicalSegment
- C. Alternate ports may exist on the root bridge
- D. All ports on the root bridge are fixed ports
Answer: A,C
NEW QUESTION 196
Which types of mirroring groups supported by H3C S series switches include the following
- A. Remote-destination
- B. Remote-source
- C. Local
- D. Remode
Answer: A,B,C
NEW QUESTION 197
For the following configuration commands:
[H3C] ntp-service refclock-master 127.127.1.1 6
Understanding, which is correct
- A. This command can be successfully configured on all H3C series switches
- B. The device successfully configured with this command can act as a clock server to provide external clock synchronization services
- C. The device successfully configured with this command has a clock accuracy of 6 in stratum
- D. This command configures the local clock as the reference clock of the system
Answer: B,C,D
NEW QUESTION 198
As shown in the picture, SWA, SWB and SWC enable STP, and the MAC address of SWB is less than the MAC address of SWA. If the topology converges and the bridge priority of SWB is set to 0, the following statements are correct.
- A. SWA will immediately determine that port E0/1 is the root port
- B. After the priority is adjusted, SWB will immediately send configuration BPDUs with itself as the root from ports E0/1 and E0/2
- C. The topology will re-converge after 30 seconds by default
- D. After SWC receives the configuration BPDU sent by SWB, it will not update immediately, but will wait for the locally saved configuration BPDU to age before updating
Answer: A,B,C
NEW QUESTION 199
When using publickey authentication for SSH users, which descriptions are correct in terms of configuration keys?
- A. The client is required to specify the RSA private key corresponding to the host public key for the SSH user
- B. Need to configure the client's RSA host private key on the server side
- C. The host private key of the client cannot be configured to the server by copy and paste
- D. You can use copy and paste to configure the client's host public key to the server
Answer: A,D
NEW QUESTION 200
After executing the displayinterface Ethernet 1/0/1 command on the switch SWA, the output information is as follows:
[SWA]display interface Ethernet 1/0/1
Ethernet1/0/1 current state: UP
PVID: 10
Mdi type: auto
Link delay is 0(sec)
Port link-type: trunk
VLAN passing: 1 (default vlan), 10
VLAN permitted: 1 (default vlan), 2-4094
Trunk port encapsulation: IEEE 802.1q
Port priority: 0
It can be judged from the above output
- A. Data frames without VLAN tags will be tagged with VLAN1 when they enter port Ethernet1/0/1
- B. Port Ethemet1/0/1 is a trunk port, allowing data frames of any VLAN to pass through
- C. Port Ethemet1/OM is a trunk port, which only allows data from VLAN 1 and VLAN 10 to pass through
- D. Data reconnaissance with VLAN1 tag will not be stripped when it leaves port Ethemet1/0/1
Answer: B,D
NEW QUESTION 201
The IP address of the host PCA is 40.1.1.1, and the MAC address is 0011.1111.1111. The PCA is connected to the GigabitEthernet1/0/1 port of the switch SWA. The following commands are configured on the switch SWA:
[SWA]vlan 10
[SWA-vlan10]quit
[SWA]vlan 20
[SWA-vlan20]protocol-vlan ipv4
[SWA-vlan20]quit
[SWA]vlan 30
[SWA-vlan30]quit
[SWA]mac-vlan mac-address 0011-1111-1111 vlan 30
[SWA]vlan 40
[SWA-vlan40]ip-subnet-vlan ip 40.1.1.0 255.255.255.0
[SWA-vlan40]quit
[SWA]interface GigabitEthernet 1/0/1
[SWA-GigabitEthernet1/0/1]port link-type hybrid
[SWA-GigabitEthernet1/0/1]port hybrid pvid vlan 10
[SWA-GigabitEthernet1/0/1]port hybrid vlan 10 20 30 40 untagged
[SWA-GigabitEthernet1/0/1]port hybrid protocol-vlan vlan 20 0
[SWA-GigabitEthernet1/0/1]port hybrid ip-subnet-vlan vlan 40
[SWA-GigabitEthernet1/0/1]mac-vlan enable
[SWA-GigabitEthernet1/0/1]vlan precedence ip-subnet-vlan
After the configuration is complete, it can be judged that PCA will join
- A. VLAN 10
- B. The configuration command is incorrect
- C. VLAN40
- D. VLAN30
- E. VLAN20
Answer: C
NEW QUESTION 202
The customer LAN switches SWA, SWB, and SWC form the RRPP ring main ring 1, and the switch SWB has the following configuration information:
[SWB]rrpp domain 1
[SWB-rrpp-domain1]ring 1 node-mode transit primary-port gigabitethernet 2/0/1 secondary-port gigabitethernet 2/0/2 level 0
If the switch SWA is the master node of primary ring 1, if the switch SWB port GigabitEthem2/0/1 fails, you can know from the above information
- A. The switch SWA will send a Common-Flush message to notify all transmission nodes
- B. The switch SWA immediately switches the state to the Failed state and releases the secondary port
- C. If the switch SWB finds that the port GigabitEthernet 2/0/1 becomes Up again, it will immediately unblock the port
- D. SWA will send Link-Down messages to notify all nodes
Answer: A,B
NEW QUESTION 203
As shown in the networking, initially Link 2 is not connected, and STP is not enabled on the switches, and the PCB can send data to PCA. If Link 1 fails at this time, the maintenance staff connects Link 2 to the PCA. The restoration process of the transmission service is correct (assuming that the PCA will not actively send data)
- A. SWB's E0/1 interface can immediately enter the forwarding state
- B. It will take 300 seconds for the business from PCB to PCA to resume by default
- C. SWC can immediately forward the data from PCB to PCA to SWB
- D. It will take 30 seconds for the business from PCB to PCA to resume by default
Answer: A,B
NEW QUESTION 204
In the switching network as shown in the figure, all three switches have only default VLAN1. The interconnection ports of the three switches are Trunks, and all VLANs are allowed to pass. All three switches have the global and port GVRP functions enabled. VLAN 10 is created on the switch SWA, VLAN 20 is created on the switch SWC, and the GVRP registration mode of the Ethernet1/0/1 port is set to Forbidden on the switch SWA. Check the status of each Trunk port on the three switches. (Choose one or more)
- A. [SWB]display interface Ethernet 1/0/2 Ethernet1/0/2 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
- B. [SWA]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
- C. [SWC]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
- D. [SWB]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
Answer: B,D
NEW QUESTION 205
The following statements about the role of BSR and RP in PIMSM are correct:
- A. RP is the rendezvous point where multicast receivers join a multicast group
- B. BSR controls the collection and dissemination of RP information and is the management core of the PIM-SM domain
- C. RP is a relay station for multicast sources to forward multicast traffic
- D. If there is no BSR in the PIM-SM domain, RP information cannot be diffused, multicast receivers cannot join normally, and multicast traffic cannot be forwarded normally
Answer: A,B,C
NEW QUESTION 206
Regarding the role and status of the STP port, the following statements are correct:
- A. The port with the role of Alternate will not go through the Listening state and the Learning state
- B. The designated port will enter the Forwarding state after two ForwardDelay durations
- C. Only the designated port will eventually be in the Forwardig state
- D. Only the Alternate port will be in the Blocking state
Answer: A,B,D
NEW QUESTION 207
The figure shows the stable topology after STP calculation and convergence, then the following statements are correct:
- A. The port saves the aging time of the BPDU as MaxAge
- B. The BPDU is a configuration BPDU, the destination address is 01-80-C2-00-00-0
- C. The sending period of this BPDU is HelloTime
- D. SWA is the root bridge in the network
Answer: A,B,C,D
NEW QUESTION 208
Regarding MSTP, the correct statement is
- A. The basic idea of MSTP is to calculate a spanning tree for each VLAN, and each tree corresponds to a spanning tree instance
- B. A VLAN in MSTP can be mapped to multiple spanning tree instances
- C. MSTP is defined in 802.1s^ which can not only meet fast convergence, but also achieve load sharing
- D. A spanning tree instance in MSTP can contain multiple VLANs
Answer: C,D
NEW QUESTION 209
In the switching network shown in the figure, VLAN10 is set as Isolate-user-vlan on the switch SWA, VLAN2 and VLAN3 are set as the Secondary VLAN of VLAN 10; VLAN2? VLAN20 is created on the switch SWB, and VLAN20 is set as Isolate-user-vlan , VLAN4 is VLAN20 Secondary VLA after setting the IP address of each device as shown in the figure, the local proxy ARP function is enabled on both SWA and SWB. At first, the switch and pc did not learn their corresponding ARP entries in PCA. During the process of pinging PCB, PCA will send an ARP request. The source MAC address of the ARP request packet forwarded by the switch to PCB is
- A. 00E0.FC00.0010
- B. 00E0.FC00.0020
- C. 0000.0000.0000
- D. 0011.1111.1111
Answer: B
NEW QUESTION 210
In the network connection as shown in the figure, SWA/SWB/SWC are in the same MSTP domain and configure the same domain configuration
stp region-configuration
region-name h3c
instance 1 vlan 10
instance 2 vlan 20
instance 2 vlan 30
active region-configuration
The ports of the three interconnected links are all Access and belong to the VLAN as shown in the figure. The three switches respectively create the VLAN virtual interface corresponding to the Access link and run OSPF on the virtual interface. The IP address of the VLAN virtual interface is assigned as follows:
SWA: vlan-interface 10 (192.168.10.1); vlan-interface 30 (192.168.30.1)
SWB: vlan-interface 10 (192.168.10.2); vlan-interface 20 (192.168.20.1)
SWC: vlan-interface 20 (192.168.20.2); vlan-interface 30 (192.168.30.2)
When the interconnection ports are all UP and the STP and OSPF calculations are completed, the following descriptions about network connectivity are correct:
- A. Two of the three switches cannot establish OSPF neighbor relationships
- B. All interconnection addresses of the three switches are mutually reachable
- C. Three switches can establish OSPF neighbor relationships in pairs
- D. Among the 6 interconnected addresses, at least two interconnected addresses are mutually unreachable
Answer: C
NEW QUESTION 211
As shown in the network, the switches all run RSTP. Initially, SWA, SWB and SWC are interconnected through links 1, 2, and 3. When the following changes occur in the network connection, the correct statement is:
- A. When the link between SWB and SWC is down, both SWB and SWC will send RST BPDU 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. As shown in the figure, when SWB is connected to another switch running RSTP, SWD will send RSTBPDU with TC set.
- D. When SWC edge port E0/1 is connected to a PC, SWC will send RST BPDU with TC set
Answer: B
NEW QUESTION 212
GVRP is enabled on the switch SWA, and the Hold timer value is set to 100 centiseconds. Now you need to modify the value of other timers. The following configuration is correct
- A. [SWA-Ethernet1/0/1]garptimer join 50
- B. [SWA-Ethernet1/0/1]garp timer join 200
- C. [SWA-Ethernet1/0/1]garptimer leave 400
- D. [SWA]garp timer leaveall 415
Answer: B
NEW QUESTION 213
Which of the following messages are TACACS+ authentication messages
- A. start
- B. Continue
- C. Rsponse
- D. Request
Answer: A,B
NEW QUESTION 214
In the network as shown in the figure, the corresponding configuration is completed on the switch SWA, and the switch SWA and each PC have learned the corresponding ARPPCA to access the PCB and send the ICMP request message, and the switch SWA forwards this MAC address to the PCB as
- A. MAC20
- B. MAC_A
- C. 0000.0000.0000
- D. MAC10
Answer: A
NEW QUESTION 215
As shown in the networking, there is no connection between SWA and SWB at the beginning, and RSTP is enabled for SWA and SWB. When the topology is stable, connect the port E1/0/1 of SWA and SWB. Assuming that SWA will become the new root bridge, the following The correct statement is
- A. Port E1/0/1 of SWA and SWB will send Proposal message to request to enter forwarding state
- B. When SWB receives the Proposal message sent by SWA, it will immediately reply to the Agreement message
- C. SWB does not need to generate BPDUs by itself, and the content of the Agreement message in response is copied from the Proposal message sent by SWA
- D. When SWB receives the Proposal message sent by SWA, it will start the synchronization process to block the old root port, designated port and edge port
Answer: A,C
NEW QUESTION 216
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