[Nov 10, 2021] Get New GB0-371-ENU Certification Practice Test Questions Exam Dumps
Real GB0-371-ENU Exam Dumps Questions Valid GB0-371-ENU Dumps PDF
NEW QUESTION 86
Two routers RTA and RTB are connected through a LAN to form a VRRP backup group. The configuration of each interface is as follows:
GigabitEthernet1/0.1 of RTA
vlan-type dot1 q vid 2
ip address 192.168.0.252 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.0.254
vrrp vrid 1 priority 120
GigabitEthernet1/0.2 of RTA
vlan-type dot1 q vid 3
ip address 192.168.1.252 255.255.255.0
vrrp vrid 2 virtual-ip 192.168.1.254
vrrp vrid 2 priority 120
GigabitEthernet1/0.1 of RTB:
vlan-type dot1 q vid 2
ip address 192.168.0.253 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.0.254
GigabitEthernet1/0.2 of RTB:
vlan-type dot1 q vid 3
ip address 192.168.1.253 255.255.255.0
vrrp vrid 2 virtual-ip 192.168.1.254
The IP addresses of HostA and HostB in the LAN are 192.168.0.1 and 192.168.1.1 respectively. From the above information, we can know
- A. If the backup group uses virtual MAC, the gateway MAC addresses learned by HostA and HostB are inconsistent
- B. The backup group uses virtual MAC mode, and the gateway MAC addresses learned by HostA and HostB are the same
- C. If the backup group uses real MAC mode, the gateway MAC addresses learned by HostA and HostB are inconsistent
- D. If the backup group uses real MAC mode, the gateway MAC addresses learned by HostA and HostB are the same
Answer: A,D
NEW QUESTION 87
Regarding loop protection, the following statements are correct
- A. In MSTP, this function is valid for root port, alternate port and backup port
- B. After the loop protection function is activated, when the BPDU saved on the port ages, the loop protection takes effect
- C. If the role of the root port changes, it will become the Discarding state, without forwarding packets, so that no loop will be formed in the network. The Discarding state will be maintained until the port receives the BPDU again and becomes the root port again.
- D. Link congestion or single link may cause loops
Answer: A,B,C,D
NEW QUESTION 88
Two routers RTA and RTB are connected through a LAN to form a VRRP backup group. The interface configuration of each router is as follows:
GigabitEthernet1/0 of RTA
ip address 192.168.0.252 255.255.255.0
ip address 192.168.1.252 255.255.255.0 sub
vrrp vrid 1 virtual-ip 192.168.0.254
vrrp vrid 1 priority 120
vrrp vrid 2 virtual-ip 192.168.1.254
GigabitEthernet1/0 of RTB
ip address 192.168.0.253 255.255.255.0
ip address 192.168.1.253 255.255.255.0 sub
vrrp vrid 1 virtual-ip 192.168.0.254
vrrp vrid 2 virtual-ip 192.168.1.254
vrrp vrid 2 priority 120
From the above information-know
- A. Backup group 1 can be successfully established, but backup group 2 cannot be successfully established
- B. Router A is the master router of backup group 1, and router B is the master router of backup group 2.
- C. Backup group 1 can be successfully established, and backup group 2 can be successfully established
- D. Router A is the master router of backup group 1, and backup group 2 has no master router
Answer: B,C
NEW QUESTION 89
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 90
The multicast IP address is 229.130.130.1, and its corresponding multicast mac address is _____.
- A. 00-00-5E-82-82-01
- B. 00-00-5E-02-82-01
- C. 01-00-5E-02-82-01
- D. 01-00-5E-82-82-01
Answer: B,C
NEW QUESTION 91
Which of the following addresses is not an IPv4 multicast address?
- A. 239.255.255.255
- B. 224.0.0.13
- C. 242.255.255.250
- D. 232.255.255.255
Answer: C
NEW QUESTION 92
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 93
Among the following options, the technologies that can be used for identity authentication include
- A. RADIUS
- B. EAD
- C. Packet filtering
- D. PortaL certification
- E. 802.1X authentication
Answer: A,D,E
NEW QUESTION 94
Regarding the configuration of the timer in the spanning tree protocol, the correct statement is
- A. MaxAge should be adjusted to the minimum value, which can shorten the aging time of BPDUs and detect link failures in time
- B. It is not recommended to manually configure Hello Forward Delay and Max Age, the switch will automatically set a better value for the timer through the network diameter value
- C. The HelloTime should be adjusted to the maximum value and the Forward Delay to the minimum value. This can reduce the number of Hello messages in the network and the port can enter the forwarding state as soon as possible
- D. A proper Helloinme value can reduce the computational loss of the spanning tree while enhancing the robustness of the spanning tree. If the value is too large or too small, it will affect the generation of the spanning tree calculation and the stability of the network.
Answer: B,D
NEW QUESTION 95
The customer purchased a router. If the performance index of the router is MTBF>Y14 8 years, and the average maintenance time MTTR<U1, the reliability of the router is
- A. 99.9%
- B. 99.999%
- C. 99.9999%
- D. 99.99%
Answer: B
NEW QUESTION 96
As shown in the network topology, if STP is enabled on SWA and SWD, the statement about the state change of SWA and SWD port is correct.
- A. If the bridge priority of SWD is modified to 0, port E0/2 of SWA will directly enter the Blocking state, without the delay of Forward Delay
- B. The E0/2 port of SWD changes its role in the Learning state, and changes from the designated port to Altenet
- C. The E0/1 port of SWD undergoes a port role change in the Listening state, from a designated port to a root port
- D. Both E0/1 of SWA and E0/1 of SWD need to pass the ForwardDelay of Listening and Learning states to enter the Forwarding state.
Answer: A,C,D
NEW QUESTION 97
In NTP client and server mode, which of the following NTP authentication combinations can be successfully synchronized?
- A. Both NTP client and server enable authentication
- B. Verification is not enabled on the NTP client, and verification is enabled on the server
- C. Both NTP client and server are not enabled for authentication
- D. Verification is enabled on the NTP client but not on the server
Answer: A,B,C
NEW QUESTION 98
The following technologies belong to the link backup technology in the redundant backup technology.
- A. Smart-Link
- B. STP
- C. Dynamic routing
- D. RRPP
- E. Link aggregation
Answer: A,B,D,E
NEW QUESTION 99
Regarding the comparison of unicast, multicast and broadcast, there are correct
- A. Compared with unicast, multicast can reduce link load
- B. Compared with broadcast, multicast can reduce the burden of the source
- C. Compared with broadcast, multicast can improve link utilization
- D. Compared with unicast, multicast can reduce the burden of the source
Answer: A,C,D
NEW QUESTION 100
The Ethemet1/0/1 port configuration of the switch SWA is as follows:
interface Ethernet 1/0/1
port link-type trunk
port trunk permit vlan 10
port trunk pvid vlan 20
Now you need to modify the Ethernet 1/0/1 port of the switch SWA to a Hybrid port, the PVID is VLAN20, and the data frame of VLAN10 is tagged, then the following configuration process is correct (choose one or more)
- A. [SWA-Ethernet1/0/1]portlink-type access [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged
- B. [SWA-Ethernet1/0/1]undoportlink-type [SWA-Ethernet1 /0/1 ]portlink-type hybrid [SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged
- C. [SWA-Ethernet1/0/1]port link-type hybrid
- D. None of the above is correct
- E. [SWA-Ethernet1/0/1]portlink-type access [SWA-Ethernet1/0/1]port access vlan 20 [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged
Answer: A,B,E
NEW QUESTION 101
The following are functions of the convergence layer (choose one or more)
- A. Access security control
- B. Possess a large number of interfaces for connecting with end user computers
- C. Complex routing strategy
- D. High-speed packet switching
Answer: C
NEW QUESTION 102
What is correct about IGMP Snooping?
- A. Port quick leave means that when the switch leaves the IGMP Leave message, it directly deletes the port from the outgoing port list of the corresponding forwarding entry
- B. The unknown multicast group dropping function can be enabled on the switch. When the switch receives unknown multicast data packets, it will only forward to its router port and not broadcast in the VLAN.
- C. Using the iIGMP Snooping function on the Layer 2 device can establish and maintain multicast forwarding entries at the data link layer, so that multicast data can be forwarded normally at the data link layer
- D. Both IGMP & IGMP Snooping can be configured in the same VLAN
Answer: A,B
NEW QUESTION 103
To configure the Ethernet1/0/1 port of the switch SWA as a hybrid port, its PVID is VLAN20, and when sending VLAN20 data frames without tagging, when sending VLAN 10 data frames, then the following configuration Is the process correct (choose one or more)
- A. [SWA]vlan10 [SWA-vlan 10]quit [SWA]vlan 20 [SWA-vlan20]quit [SWA]interface Ethernet 1/0/1 [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1 /0/1 ]port hybrid vlan 10 tagged
- B. [SWA]vlan10 [SWA-vlan10]quit [SWA]vlan 20 [SWA-vlan20]quit [SWA]interface Ethernet 1/0/1 [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged [SWA-Ethernet1 /0/1 ]port hybrid vlan 20 untagged
- C. [SWA]vlan10 [SWA-vlan 10]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 hybrid [SWA-Ethernet1 /0/1]port hybridvlan 10 tagged
- D. None of the above is correct
- E. [SWA]interfaceEthernet 1/0/1 [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged [SWA-Ethernet1/0/1]port hybrid vlan 20 untagged [SWA-Ethernet1/0/1]quit [SWA]vlan 10 [SWA-vlan10]quit[SWA]vlan 20
Answer: B,C
NEW QUESTION 104
In the switching network as shown in the figure, VLAN10 is set as Isolate-user-vlan on the switch SWA, VLAN2 and VLAN3 are the Secondary VLAN of VLAN 10; VLAN2? VLAN20 is created on the switch SWB, and VLAN20 is set as Isolate-user-vlan , VLAN4 is the Secondary VLAN of VLAN20. After setting the IP address of each device, check the MAC address table on SWA, it will show that the PCB belongs to (choose one or more)
- A. VLAN2
- B. VLAN4
- C. VLAN 1
- D. VLAN3
- E. VLAN 10
- F. VLAN20
Answer: D,E
NEW QUESTION 105
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 106
As the basis for the realization of the SNMP protocol, the managed objects in the MIB can be identified by the object name or OID. The following descriptions of the managed objects are correct (multiple choice)
- A. Scalar nodes only have read attributes, not write attributes
- B. The nodes in the MIB are divided into leaf nodes and non-leaf nodes. The non-leaf points cannot be accessed
- C. Leaf nodes are divided into phenotype nodes and scalar nodes. When the network management workstation accesses the leaf nodes, the instance ID must be added after the leaf node corresponds to the OID.
- D. The managed object exists in the form of a node, which can be represented by object name or OID, and the two are mapped one by one
Answer: C,D
NEW QUESTION 107
The configuration command to enable the QinQ function of the Ethernet port on the H3C series switch is
- A. qinq enable
Answer: A
NEW QUESTION 108
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