EMT Practice Test

1. Question Content...

A. Choice A

B. Choice B

C. Choice C

D. Choice D

E. Choice E

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Question List

Question1: Which of the following protocols are mainstream overlay technologies? (Multiple choice)

Question2: Which of the following statements about VXLAN packets are correct? (Multiple choice)

Question3: Which of the following elements may be included in the MAC address table of a switch? (Multiple choice)

Question4: Hosts PCA, PCB and PCC are connected to GigabitEthernet1/0/1, GigabitEthernet1/0/2 and GigabitEthernet1/0/3 ports of switch SWA, which belong to VLAN2, VLAN3 and VLAN10 respectively, and the host IFE addresses are in the same network segment. It is required that PCA and PCB can access PCC, but PCA and PCB cannot access each other. Which of the following configurations should be included in the configuration process of SWA? (Multiple choice)

Question5: Which of the following addresses is not an IPv4 multicast address?

Question6: The NTP protocol is based on UDP transmission protocol messages, and its UDP port number is ().

Question7: Which of the following statements is correct regarding the designation of the MSTP root bridge?
(Multiple choice)

Question8: In an SDN network, log in to an Overlay edge device and enter the command "display openflow instance 1 controller". The following is the response. Which of the following is correct inference that can be made from the response information?

Question9: Which of the following statements about the DR election process of PIMSM shared network segment is correct? (Multiple choice)

Question10: In the switching network shown in the figure, VLAN10 is set as Isolate-user-vlan on switch SWA, and VLAN2 and VLAN3 are set as Secondary VLAN of VLAN 10; VLAN4 and VLAN20 are created on switch SWB, and VLAN20 is set as Isolate-user-vlan and VLAN4 is set as Secondary VLAN of VLAN20. After setting the IP addresses of each device as shown in the figure, the local proxy ARP function is enabled on SWA and SWB. Initially, the switch and PC did not learn their corresponding ARP entries. When PCA pings PCB, PCA will send an ARP request. After PCB receives the ARP request message, it sends a destination MAC response with the destination MAC address as?

Question11: SNMP v3 defines two security models: user-based security model and view-based access. Which of the following security functions does the user-based security model provide? (Multiple choice)

Question12: Regarding the working principle of IGMP-Snooping, which of the following is correct? (Multiple choice)

Question13: 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?

Question14: Which of the following statements about STP bridge ID is correct?

Question15: Which of the following statements about the generation of TCNBPDU is correct?

Question16: Which of the following are organizations or projects related to SDN? (Multiple choice)

Question17: Two routers are connected together through a LAN to form a VRRP backup group. The configuration on each interface is as follows:
[RTA-GigabitEthernet1/0] display this
IP address 192.168.0.252 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.1.254
Vrrp vrid 1 priority 120
[RTB-GigabitEthernet1/0] display this
IP address 192.168.0.253 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.1.254
What can we learn from the above information?

Question18: A customer purchased a router . If the performance indicators of this router are MTBF>Y14 8 years and MTTR<U1, then which of the following is the reliability of this router?

Question19: Which of the following statements about multicast VLAN is correct? (Multiple choice)

Question20: In the switching network shown in the figure, VLAN10 is set as lsolate-user-vlan VLAN2 and VLAN3 are SecondaryVLAN of VLAN 10 on switch SWA; VLAN20 are created on switch SWB, and VLAN20 is set as lsolate-user-vlan, and VLAN4 is SecondaryVLAN of VLAN20. After setting the IP addresses of each device as shown in the figure, it can be judged which of the following is correct? (Multiple choice)

Question21: Which of the following descriptions of the role of the agreement are correct? (Multiple choice)

Question22: The mechanisms of the multicast group management protocol mainly include? (Multiple choice)

Question23: In PIM-DM networking, which of the following is correct about the process of SPT formation (without considering the state refresh mechanism)? (Multiple choice)

Question24: In PIM-DM networking, which of the following is correct about the router sending the Prune message? (Multiple choice)

Question25: What standard southbound protocols does VCFC currently support? (Multiple choice)

Question26: In the basic AAA implementation structure shown in the figure, if the server group is configured to provide AAA security services to a certain service of the host, which of the following security functions can be implemented and completed by the AAA server group? (Multiple choice)

Question27: In the basic AAA implementation structure shown in the figure, which of the following services provided by the access server can be provided with security guarantees by AAA? (Multiple choice)

Question28: Hosts PCA, PCB and PCC are connected to GigabitEthernet1/0/1, Ethernet1/0/2 and Ethernet1/0/3 ports of switch SWA respectively, and their addresses are in the same network segment. Configure
[SWA] vlan 10
[SWA-vlan10] port ethernet 1/0/1
[SWA-vlan10] quit
[SWA] vlan 20
[SWA-vlan20] port ethernet 1/0/2
[SWA-vlan20] quit
[SWA] vlan 30
[SWA-vlan30] port ethernet 1/0/3
[SWA-vlan30] quit
[SWA] interface ethernet 1/0/1
[SWA-Ethernet1/0/1] port link-type hybrid
[SWA-Ethernet1/0/1] port hybrid vlan 10 30 untagged
[SWA-Ethernet1/0/1] quit
[SWA] interface ethernet 1/0/2
[SWA-Ethernet1/0/2] port link-type hybrid
[SWA-Ethernet1/0/2] port hybrid vlan 20 30 untagged
[SWA-Ethernet1/0/2] quit
[SWA] interface ethernet 1/0/3
[SWA-Ethernet1/0/3] port link-type hybrid
[SWA-Ethernet1/0/3] port hybrid vlan 10 20 30 untagged
what can we learn from the above information? (Multiple choice)

Question29: The router IGMP protocol version can be configured which of the following in the view?

Question30: In the networking model shown in the figure, after configuration is completed, it is found that user authentication fails. The possible cause of the failure is? (Multiple choice)

Question31: A loop in the LAN may cause? (Multiple choice)

Question32: Three routers RTA, RTB, and RTC are connected together through a LAN to form a VRRP backup group. The interface configuration of each router is as follows:
RTA's GigabitEthernet
IP address 192.168.0.252 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
Vrrp vrid 1 priority 120 RTB GigabitEthernet
IP address 192.168.0.253 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
Vrrp vrid 1 priority 90 RTC GigabitEthernet
IP address 192.168.0.254 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
what can we learn from the above information?

Question33: Which of the following statements about the BPDU format of MSTP is correct? (Multiple choice)

Question34: SSH uses a complete user authentication mechanism to ensure the legitimacy of the logged-in user. Which of the following descriptions of the SSH authentication method is incorrect? (Multiple choice)

Question35: Which of the following statements is correct regarding the configuration of the spanning tree protection mechanism?

Question36: The figure shows the application of SmartLink and RRPP hybrid networking. In this networking environment, the RRPP protocol is enabled on switches SWA, SWB, SWC, and SWD to provide link redundancy backup. What can we learn from the above information? (Multiple choice)

Question37: NTP provides a variety of working modes to adapt to different application scenarios. Which of the following descriptions of NTP working modes is correct? (Multiple choice)

Question38: By viewing the IGMP group information, you can learn which of the following? (Multiple choice)

Question39: How does Overlay technology solve the problems and challenges encountered in the development of cloud computing? (Multiple choice)

Question40: In the networking connection shown in the figure, SWA/SWB/SWC are in the same MSTP domain and are configured with the same domain configuration.
stp region-configuration
Region-name h3c instance 1 vlan 1 1000
Active region-configuration
The ports of the three interconnected links are all trunks, and the VLANs they pass are shown in the figure. When the interconnected ports are all UP and the STP calculation is completed, which of the following descriptions of the STP status are correct? (Multiple choice)

Question41: The router runs the IGMPV2 protocol. The Group Address in the Query message received by the host in its directly connected LAN may be? (Multiple choice)

Question42: Which of the following are the advantages of modular network architecture?

Question43: When configuring SSH login, make the following configuration on the switch:
[Switch B] public-key peer Switch001 import sshkey pubkey
Which explanation and description of this configuration is correcy? (Multiple choice)

Question44: Which of the following descriptions of the service chain flow classification node are correct?
(Multiple choice)

Question45: The network topology is shown in the figure. STP is enabled on SWA and SWD. which of the following statements about the changes in the status of SWA and SWD ports are correct?

Question46: Which of the following descriptions of the secure managed service gateway group are correct?
(Multiple choice)

Question47: Which of the following statements about STP bridge ID is correct?

Question48: Two routers are connected together through a LAN to form a VRRP backup group. The configuration on each interface is as follows:
[RTA-GigabitEthernet1/0] display this
IP address 192.168.0.252 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
Vrrp vrid 1 priority 120 shut down.
[RTB-GigabitEthernet1/0] display this
IP address 192.168.0.253 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
What can we learn from the above information?

Question49: In the network shown in the figure, the PIMSM protocol is running between RT1, RT2 and RT3, the RP is 1.1.1.1, there is a receiver connected to RT3, and the IGMP multicast source 2.2.2.2 is enabled on the corresponding interface and connected to RT2. The unicast routing table is checked on RT3 as follows:
[RT3] display ip routing-table Routing Tables: Public Destinations: 11 Routes:
12Destination/MaskProtoPreCost NextHop Interface
/1.1.1.1/320SPF 10 1562 192.168.0.1 S0/2/0
0.2 S0/2/0|192.168.0.2/32 Direct 00127.0.0.1 InLoopo/192.168.0.0/300 SPF 10 3124 192.168.2.1 so/2/1/127.0.0.0/8 Direct 00127.0.0.1 InLoopo/127.0.0.1/32 Direct 00127.0.0.1 InLoopo/192.168.0.0/30 Direct 00192.168.0.2 S0/2/0|192.168.0.2/32 Direct 00127.0.0.1 InLoopo/192.168.0.0/30 3124
192.168.0.1 S0/2/0
/192.168.2.0/30 Direct 00192.168.2.2 so/2/1/192.168.2.1/32 Direct 00192.168.2.1 so/2/1[192.168.2.2/32 Direct 00127.0.0.1 InLoop Then, when the receiver sends a group join request, which of the following routers have (*, G) entries?
(Multiple choice)

Question50: What are the typical characteristics of SDN? (Multiple choice)

Question51: Which southbound standard protocols does VCFC currently support?

Question52: The Ethernet1/0/1 port of switch SWA is configured as follows:
Interface Ethernet 1/0/1 port link-type trunk
Port trunk permit vlan 10 port trunk pvid vlan 20
Now we need to change the Ethernet 1/0/1 port of switch SWA to a Hybrid port, with PVID of VLAN 20, and tag the data frames sent from VLAN 10. Which of the following configuration processes is correct?
(Multiple choice)

Question53: Which of the following protocols are multicast routing protocols running between routers? (Multiple choice)

Question54: Which of the following options can be used for identity authentication technology? (Multiple choice)

Question55: What are the main ways to connect VCFC with cloud platforms? (Multiple choice)

Question56: After executing the display interface 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
what can we learn from the above information? (Multiple choice)

Question57: As shown in the figure, initially SWA is connected to SWB via EO/1, and SWB is connected to SWC via port EO/2. SWA and SWC are not directly connected. After enabling STP and waiting for its convergence, SWA and SWC are connected, which leads to a change in the STP status of the switch port. which of the following is correct? (Multiple choice)

Question58: Which of the following technologies belongs to Layer 3 multicast technology? (Multiple choice)

Question59: After executing the display interface 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
what can we learn from the above information? (Multiple choice)

Question60: Regarding the port filtering mode of VoiceVLAN, which of the following is correct? (Multiple choice)

Question61: Two switches SWA and SWB are connected together through four Ethernet cables, and the corresponding interfaces on switch SVVA have the following configuration:
[SWA-Ethernet1/0/1] display this duplex full
Speed 10
[SWA-Ethernet1/0/2] display this duplex full
Speed 10
[SWA-Ethernet1/0/3] display this duplex half
Speed 100
[SWA-Ethernet1/0/4] display this duplex half
Speed 100
What can we learn from the above information?

Question62: As shown in the figure, the switches are all running RSTP. Initially, SWA, SWB and SWC are interconnected. When the topology is stable, SWB and SWD are connected. Which of the following statements are correct? (Multiple choice)

Question63: In an SDN network, which protocol packets may be sent to the vCFC and processed by the VCFC?
(Multiple choice)

Question64: When configuring MSTP, the configuration steps in the regional view include? (Multiple choice)

Question65: Switch [SWA] dot1x authentication-method eap, which of the following is correct? (Multiple choice)

Question67: Which of the following statements about SOA and ITolP is correct? (Multiple choice)

Question68: The figure shows the networking application of RRPP. The customer LAN switches SWA, SWB, SWC, and SWD form the RRPP ring main ring 1, and the switches SWB, SWC, and SWE form the sub-ring 2.
If the switching SWE is the master node of sub-ring 2, which of the following can be known from the above information?

Question69: Regarding the port status and role in RSTP, which of the following is correct? (Multiple choice)

Question70: The router IGMP Snooping function must be enabled in which of the following view?

Question71: Which of the following statements about inter-VLAN communication on switches is correct?
(Multiple choice)

Question72: Which of the following messages are TACACS+ authentication messages? (Multiple choice)

Question73: Which of the following statements about the STP root bridge is correct? (Multiple choice)

Question74: Which of the following statements about STP bridge ID is correct?

Question75: SSH protocol uses RSA encryption system to ensure transmission security and the legitimacy of the logged-in user. The reason why RSA authentication method is adopted by SSH is that its characteristics are? (Multiple choice)

Question76: Regarding loop protection, which of the following is correct? (Multiple choice)

Question77: Concerning the comparison of BPDU processing methods between RSTP and STP, which of the following statements is correct? (Multiple choice)

Question78: The customer's LAN switch SWA has dual uplink connections to switches SWB and SWC.
SmartLink is used to ensure link reliability. The SWA switch has the following configuration:
[SWA-smlk-group1] smart-link flush enable control-vlan 10 The SWB switch has the following configuration?
[SWB-GigabitEthernet1/0/1] smart-link flush enables control-vlan 100 The SWC switch has the following configuration:
[SWC-GigabitEthernet1/0/1] smart-link flush enables control-vlan 100
If the interconnection interfaces of switches SWA, SWB, and SWC allow all VLANs to pass, what can we learn from the above information? (Multiple choice)

Question79: In order to guide network equipment manufacturers to correctly manage equipment, ISO defines five major functions of network management. Which functions does the SNMP network management system implement? (Multiple choice)

Question80: Regarding the compatible operation of RSTP and STP, which of the following is correct? (Multiple choice)

Question81: The customer's two switches SWA and SWB are connected together through seven Ethernet cables and configured with dynamic link aggregation . The corresponding ports on switch SWA are Ethernet 1/0 Ethernet 1/0/2 , Ethernet 1/0/3 , Ethernet 1/0/4 , Ethernet 1/0/5 , Ethernet 1/0/6 , Ethernet1/0/7 If switches SWA and SWB support only 6 ports per aggregation group, and the SWA switch has the following configuration:
[SWA] interface Ethernet 1/0/7
[SWA-Ethernet1/0/7] lacp port-priority 4096 i
Check the LACP status on the device and the output is as follows:
[SWA] display lacp system-id
Actor System ID: 0x8000,00e1-fc00-5000
[SWB] display lacp system-id
Actor System ID: 0x8000,00e0-fc43-7384
What can we learn from the above information?

Question82: Before configuring the bpdu-tunnddotlq stp command on the port of the H3C series switch that enables the QinQ function, the command that must be configured on this port is ()

Question83: Which of the request operations specified in the SNMP v1 protocol are atomic?
Atomicity means that failure of any variable in the request will cause failure of all variable operations in this request. (Select one or more)

Question84: In a certain network, it is planned to use an S5560 switch as a RADIUS client and two iMC servers as RADIUS servers to complete the user's secure authentication access. Which of the following statements is correct? (Multiple choice)

Question85: The advantages of IP multicast include? (Multiple choice)

Question86: When the host receives the GeneralQuery message from the IGMPV2 querier?

Question87: In the network shown in the figure, the interconnection lines between RT1, RT2, RT3, RT4 and RT5 are all Gigabit Ethernet lines, running OSPF, and the corresponding network segments are released to achieve routing intercommunication. The routers all run the PIM SM protocol, and the RP is 1.1.1.1. RT4 is connected to a receiver, and IGMP is enabled on the corresponding interface. When the multicast traffic initially forwarded along the RPT is switched to the SPT, which of the following routers constitute the SPT? (Multiple choice)

Question88: Which of the following statements about the forwarding plane of traditional networks and SDN networks are correct? (Multiple choice)

Question89: Which of the following statements about MSTP is correct? (Multiple choice)

Question90: Which of the following descriptions of the traffic forwarding path of the security management solution are correct? (Multiple choice)

Question91: Regarding the comparison of BPDU formats between RSTP and STP, which of the following statements are correct? (Multiple choice)

Question92: Which of the following descriptions about the service chain are correct? (Multiple choice)

Question93: SSH uses a complete user authentication mechanism to ensure the legitimacy of the logged-in user. Which of the following descriptions of the SSH authentication method is incorrect? (Multiple choice)

Question94: In the EVPN control plane, which commands can be used to see the VM ARP? (Multiple choice)

Question95: In SDN networks, which of the following security functions are currently widely used? (Multiple choice)

Question96: Which of the following statements about the architecture of SNMP v3 is correct? (Multiple choice)

Question97: Which of the following statements about the PIM joining process is correct? (Multiple choice)

Question98: Which of the following statements about the BPDU format of MSTP is correct? (Multiple choice)

Question99: Regarding the configuration of Isolate-user-vlan and Super VLAN, which of the following descriptions is correct? (Multiple choice)

Question100: SSH protocol is a secure remote login protocol and is widely used. Which of the following about SSH is correct? (Multiple choice)

Question101: What difficulties does the Internet industry face? (Multiple choice)

Question102: Regarding the comparison between MSTP and RSTP, which of the following statements are correct? (Multiple choice)

Question103: By viewing the PIM routing table, which of the following is correct? (Multiple choice)

Question104: In the switching network shown in the figure, VLAN 10 is set as the Super VLAN on the switch SWA, and VLAN 2 and VLAN 3 are sub VLANs of VLAN 10. VLAN, port Ethernet1/0/3 is a Trunk port, PVID is VLAN1, and all VLANs are allowed to pass; VLAN2 and 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 determined that which of the following statement is correct?

Question105: XYZ company's two LANs are located in different regions and are interconnected through the operator's network. The network topology is shown in the figure. Switches SWC and SWD are the company's network edge devices, and switches SWA and SWB are the operator's network edge devices.
Hosts PCA and PCB are located in VLAN2 of the company's network. The operator network assigns VLAN tags to XYZ company's data packets passing through it. Under normal circumstances, the port that needs to enable the Qinq function is? (Multiple choice)

Question106: The configuration command to set the current VLAN type to Super VLAN on the H3C series switch is ()

Question107: Which of the following statements about virtual network models are correct? (Multiple choice)

Question108: What are the advantages of SDN in network operation and maintenance? (Multiple choice)

Question109: Two routers are connected through a LAN to form a VRRP backup group. The configuration on each interface is as follows:
[RTA-GigabitEthernet1 /0] display this
IP address 192.168.0.252 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
[RTB-GigabitEthernet1/0] display this
IP address 192.168.0.253 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
what can we learn from the above information?

Question110: Which of the following descriptions about VCFC License are correct? (Multiple choice)

Question111: Which of the following statements about the calculation process of MSTP is correct? (Multiple choice)

Question112: The configuration command to enable the QinQ function of the Ethernet port on the H3C series switch is ()

Question113: Which of the following descriptions of the snmp-agent command are correct? (Multiple choice)

Question114: As shown in the figure, the switch enables RSTP. Which of the following statements about its configuration is correct? (Multiple choice)

Question115: The figure shows the networking application of SmartLink and Monitor Link. The Smart Link group is configured on switch SWD, and the MonitorLink group is configured on switch SWB and switch SWC.
The port of switch SWB connected to switch SWA is the Monitor Link uplink port, and the port of switch SWB connected to switch SWD is the Monitor Link downlink port: the opposite port of the downlink port is the port of switch SWD Smart Link group. What can we learn from the above information? (Multiple choice)

Question116: Which of the following descriptions of Openflow are incorrect? (Multiple choice)

Question117: In the switching network shown in the figure, VLAN10 is set as Private VLAN on switch SWA, and VLAN2 and VLAN3 are Secondary VLANs of VLAN10; VLAN2-VLAN20 is created on switch SWB, and VLAN20 is set as Private VLAN, and VLAN4 is Secondary VLAN of VLAN20. After setting the IP addresses of each device as shown in the figure, if the local ARP proxy function is enabled on SWA and SWB, and SWA and SWB are allowed to send ICMP packets, execute the command tracert 10.1.1.2 on PCA, and the destination IP address reached by the first hop displayed on PCA is ()

Question118: If port-based VLAN, MAC address-based VLAN, protocol-based VLAN and IP subnet-based VLAN are enabled on a port of the switch, by default, the VLANs will be matched in order?

Question119: Multicast applications are based on UDP, so multicast applications have which of the following disadvantages? (Multiple choice)

Question120: Which of the following statements about the calculation process of MSTP is correct? (Multiple choice)

Question121: Regarding the POE system, which of the following is correct? (Multiple choice)

Question122: Regarding RP and BSR, which of the following is correct? (Multiple choice)

Question123: The advantages of the hierarchical network model include_____.(Multiple choice)

Question124: Which of the following statements about the role of BSR and RP in PIMSM is correct? (Multiple choice)

Question125: In the network shown in the figure, the corresponding configuration is completed on the switch SWA, and the switch SWA and each PC have learned the corresponding ARP table entry. When PCA accesses PCB, it sends an ICMP request message. Which of the following is the destination IP address of the message?

Question126: In the network shown in the figure, PIM SM protocol runs between RT1, RT2 and RT3, and the RP is 1.1.1.1. RT3 is connected to a receiver, and IGMP is enabled on the corresponding interface.

View the unicast routing table on RT3

Then, when the receiver sends a group join request, which of the following routers have (*, G) entries?
(Multiple choice)

Question127: In SDN networks, which of the following problems exist in the traditional network security deployment method? (Multiple choice)

Question128: Regarding priority mapping and priority trust, which of the following is correct? (Multiple choice)

Question129: In the network shown in the figure, switch SWA is a layer 2 switch, and router RTA is the gateway of each PC. The following configuration is made on router RTA:
[RTA] interface Ethernet 0/0.1
[RTA-Ethernet0/0.1] ip address 10.10.10.1 255.255.255.0
[RTA-Ethernet0/0.1] vlan-type dotlq vid 1
[RTA-Ethernet0/0.1] interface ethernet 0/0.2
[RTA-Ethernet0/0.2] ip address 20.20.20.1 255.255.255.0
[RTA-Ethernet0/0.2] vlan-type dotlq vid 2
[RTA-Ethernet0/0.2] interface ethernet 0/0.3
[RTA-Ethernet0/0.3] ip address 30.30.30.1 255.255.255.0
[RTA-Ethernet0/0.3] vlan-type dotlq vid 3
After completing the configuration on switch SWA, PCA, PCB, and PCC can all ping their own gateways.
Which of the following is correct about switch SWA port Ethernet1/0/4?

Question130: In NTP client and server mode, which of the following NTP authentication combinations can successfully synchronize? (Multiple choice)

Question131: Regarding the multicast distribution tree model SPT, which of the following statement is correct?
(Multiple choice)

Question132: Regarding the configuration of timers in the spanning tree protocol, which of the following is correct? (Multiple choice)

Question133: What is the UDP port number used by the BFD echo message?

Question134: As shown in the figure, the switch enables RSTP; assuming that the cost values of each link are the same, which of the following is correct? (Multiple choice)

Question135: In a large LAN, what functional layers is the network divided into? (Multiple choice)

Question136: Which of the following descriptions about the IP address of the VLAN interface of the H3C three- layer switch is correct? (Multiple choice)

Question137: Regarding TC protection, which of the following is correct? (Multiple choice)

Question138: The customer has two routers connected through a LAN. The two routers form a VRRP backup group. The relevant configuration is as follows:
[RTA-GigabitEthernet1/0] display this
IP address 192.168.0.252 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
Vrrp vrid 1 priority 120
[RTB-GigabitEthernet1/0] display this
IP address 192.168.0.253 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
The MAC of the GigabitEthernet1/0 interface of the RTA router is 000f-4300-0001, and the MAC of the GigabitEthernet1/0 interface of the RTB router is 000f-4300-0002. If RTA uses the aggregation group Real-mac mode and RTB uses the aggregation group Virtual-mac mode, what can we learn from the above information? (Multiple choice)

Question139: If you need to implement multicast data forwarding in a three-layer network, at least configure which of the following protocols or functions? (Multiple choice)

Question140: The multicast IP address is 229.130.130.1, which of the following is its corresponding multicast MAC address?

Question141: Switches SWA and SWB are connected together through two optical fiber Gigabit Ethernet links, and the following interface configuration is available on switch SWA:
[SWA] interface GigabitEthernet 1/0/1
[SWA-GigabitEthernet 1/0/1] gvrp
[SWA-GigabitEthernet 1/0/1] port link-type trunk
[SWA-GigabitEthernet 1/0/1] port trunk permit vlan 1 10
[SWA] interface GigabitEthernet 1/0/2
[SWA-GigabitEthernet 1/0/2] port link-type trunk
[SWA-GigabitEthernet 1/0/2] port trunk permit vlan 1 10
From the above, we can know which of the following?

Question142: In the PIM-DM network shown in Figure 189, some unicast routing tables of routers RT1 and RT2 are as follows:
<RT1>display ip routing-table Routing Tables: Public
Destination/MaskProtoPreCost NextHop Interface 10.1.1.0/30 Direct 0010.1.1.2Port1

Then, which of the following are outbound and inbound interface lists of the (S, G) entries of routers RT1 and RT2? (Multiple choice)

Question143: The improvements of SNMP vc2 compared with SNMPV1 protocol include which of the following?
(Multiple choice)

Question144: The topology is shown in the figure. Perform STP calculation. which of the following is correct?
(Multiple choice)

Question145: In the network connection shown in the figure, SWA and SWB both have STP and Loopback- detection enabled. Please confirm that which of the following status description of each port of SWA and SWB is correct?

Question146: Regarding the spanning tree port cost configuration of H3C switches, which of the following is correct? (Multiple choice)

Question147: 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. Check the Ethernet 1/0/3 port information on SWA, which of the following is the correct display?

Question148: Which of the following statements is correct about the basic concept of MSTP? (Multiple choice)

Question149: What does SDN in a narrow sense include? (Multiple choice)

Question150: When a switch running MSTP and a switch running RSTP work together, which of the following is correct? (Multiple choice)

Question151: When the router receives multicast data, which of the following searches the multicast forwarding table? (Multiple choice)

Question152: As shown in the figure, SWA, SWB and SWC enable STP and SWB's MAC address is smaller than SWA's MAC address. If the topology converges, SWB's bridge priority is set to 0. Which of the following statements are correct? (Multiple choice)

Question153: The customer LAN switches SWA, SWB, and SWC form the RRPP ring main ring 1. The switch SWA has the following configuration information:
[SWA] rrpp domain 1
[SWA-rrpp-domain1] control-vlan 4092
Which of the following information can be obtained?

Question154: The basic idea of STP to eliminate loops is? (Multiple choice)

Question155: Regarding the stpmcheck command in spanning tree configuration, which of the following are the correct statements?

Question156: Regarding the relationship between SuperVLAN and Sub VLAN, which of the following descriptions is correct? (Multiple choice)

Question157: Which of the following statements about BSR and RP in PIMSM are correct?

Question158: PIM-DM working mechanism includes? (Multiple choice)

Question159: In order to achieve efficient network management, what servers do we often need to deploy in large campus networks? (Multiple choice)

Question160: When designing the network, the customer requires that key parts must have high-reliability equipment, and the reliability must reach 99.999%. which of the following operation of the equipment should meet? (Multiple choice)

Question161: In the switching network shown in the figure, VLAN 10 is set as lsolate-user-vlan on switch SWA, and VLAN 2 and VLAN 3 are set as Secondary VLAN of VLAN 10; VLAN 20 is created on switch SWB, and VLAN 20 is set as lsolate-user-vlan, and VLAN 4 is set as Secondary VLA of VLAN 20. After setting the IP addresses of each device as shown in the figure, the local proxy ARP function is enabled on SWA and SWB. Initially, the switch and PC did not learn their corresponding ARP entries. When PCA pings PCB, PCA will send an ARP request. What is the source MAC address of the ARP request message forwarded by the switch to PCB?

Question162: The Output action defined by the OpenFlow protocol can forward packets to a specified port. Which of the following options are ports supported by Output? (Multiple choice)

Question163: The customer's LAN switch SWA is dual-uplinked to switch SWB and switch SWC, and link reliability is guaranteed by Smart Link. If the MAC address of switch SWA is 000f-e269-42d1, the MAC address of switch SWB is 000f-e269-42d2, and the MAC address of switch SWC is 000f-e269-42d3, what can we learn from the above information?

Question164: Two routers are connected together through a LAN to form a VRRP backup group. The configuration on each interface is as follows:
[RTA-GigabitEthernet1/0] display this
IP address 192.168.0.252 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
Vrrp vrid 1 priority 120 vrrp vrid 1 preempt-mode
Vrrp vrid 1 track interface serial0/1 reduced 30
[RTB-GigabitEthernet1/0] display this
IP address 192.168.0.253 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254 vrrp vrid 1 preempt-mode
If a DOWN/UP event occurs on the RTA serial port Serial0/1 during network operation, what can we learn from the above information?

Question165: What are the main application directions of SDN at present? (Multiple choice)

Question166: 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)

Question167: As the network management supervisor of a company, Mr. Wang adheres to the following principles for selecting and applying network technologies and network equipment in network construction. As a network engineer, which technology selection and application do you think is not conducive to network management? (Multiple choice)

Question168: The customer LAN switches SWA, SWB, and SWC form the RRPP ring main ring 1. The switch SWA has the following configuration information:
[SWA] rrpp domain 1
[SWA-rrpp-domain1] control-vlan 4092
If switches SWB, SWC, and SWD form sub-ring 2, switches SWB, SWC, and SWE form sub-ring 3, which of the following can be known from the above information?

Question169: Two routers are connected together through a LAN to form a VRRP backup group. The VRRP timer is configured on each interface as follows:
[RTA-GigabitEthernet1 /0] vrrp vrid 1 timer advertise 5
[RTB-GigabitEthernet1/O] vrrp vrid 1 timer advertise 5
VRRP backup group 1 runs normally, RTA is the Master, and RTB is the Backup. If the device runs for a period of time and router RTA fails, the time for router RTB to change from Backup to Master may be?

Question170: 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
what can we learn from the above information? (Multiple choice)

Question171: Regarding PIM protocol configuration, which of the following is correct? (Multiple choice)

Question172: In the switching network shown in the figure, VLAN 10 is set as the Super VLAN on the switch SWA, and VLAN2 and VLAN3 are sub VLANs of VLAN 10. VLAN, port Ethernet1/0/3 is a Trunk port, PVID is VLAN1, and all VLANs are allowed to pass; VLAN2 and 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, you can judge which of the following is correct?

Question173: The SSH protocol framework consists of multiple protocols . Which of the following is a correct description of these protocols and their roles in the SSH framework? (Multiple choice)

Question174: In the network shown in the figure, SWA and SWD enable RSTP, while SWB and SWC do not enable spanning tree protocol. Which of the following statements are correct? (Multiple choice)

Question175: The figure shows the networking application of RRPP. The switches SWA, SWB, SWC, and SWD in the customer LAN form the main ring 1 of the RRPP ring. The switches SWB, SWC, and SWE form the sub-ring 2. The switches SWB, SWC, and sWF form the sub-ring 3. If the switch SWE is the master node of the sub-ring 2 and SWF is the master node of the sub-ring 3, What can we learn from the above information?

Question176: Which of the following statements about layer 3 switches is correct? (Multiple choice)

Question177: The following command is configured on a device: [sysname] port-security enable Which of the following is an incorrect description of the function and meaning of this configuration?
(Multiple choice)

Question178: As shown in the figure, each switch enables RSTP. Assuming that the link cost values are the same, which of the following is correct? (Multiple choice)

Question179: Which of the following statements about the PIM SM registration process are correct?

Question180: Regarding the compatibility configuration of MSTP, which of the following statements are correct?
(Multiple choice)

Question181: Which of the following mirroring group types are supported by H3CS series switches? (Multiple choice)

Question182: A customer wants to deploy 802.1X in the LAN to improve access security. At the same time, the customer wants to use the port security feature to temporarily close the port for 5 minutes to prevent illegal users from accessing the network. Which of the following features can be used to achieve this?

Question183: A customer wants to deploy 802.1x in the local area network to improve access security. At the same time, the customer hopes to use the port security feature to temporarily close the port for 5 minutes when it receives illegal messages to prevent illegal users from accessing the network.
Which of the following features should be enabled on the device?

Question184: As shown in the figure, there is no connection between SWA and SWB at the beginning. SWA and SWB enable RSTP. When the topology is stable, connect the ports E1/0/1 of SWA and SWB. Assuming that SWA will become the new root bridge, which of the following is correct? (Multiple choice)

Question185: Which of the following statements about PIMSSM is correct? (Multiple choice)

Question186: What are the categories of SDN network's processing of protocol messages? (Multiple choice)

Question187: Which of the following statements about the three versions of the multicast group management protocol IGMPv1, IGMPv2, and IGMPv3 is correct? (Multiple choice)

Question188: Which of the following statements about VCFC virtual ports are correct? (Multiple choice)

Question189: Which of the following statements about the calculation process of MSTP is correct? (Multiple choice)