EMT Practice Test

1. Question Content...

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Question1: What is the role of the command port trunk allow pass vlan all?

Question2: Which of the following IEEE802.11 standards only supports 2.4GHz frequency band for communication?

Question3: In the OSI reference model, what can complete end-to-end error detection and flow control?

Question4: The output information of the router R1 routing table is shown in the figure. Which of the following statements is correct? (Multiple Choice)

Question5: The two switches shown below have both enabled the STP protocol. An engineer made the following conclusions on this network. Which conclusions do you think are correct? (Multiple choice)

Question6: Which of the following statement about MPLS Labe1 statement label is wrong?

Question7: What frequency does IEEE 802.11n support? (Multiple Choice)

Question8: In the network shown in the figure below, switch A and router A are connected through two links, and the two links are aggregated in manual load sharing mode. The aggregated port number is 1, and the aggregated link performs data when forwarding, you need to carry VLAN TAG 100. Switch A uses Trunk link. Which of the following configurations should be used for Switch A?

Question9: Which of the following cannot be the length of the IPv4 packet header?

Question10: If the Proto of a certain route information in the routing table is Direct, the priority of this route is set to 0.

Question11: The IEEE 802.11ac standard only supports the 5GHz frequency band.

Question12: In the network shown in the figure below, from a security perspective, router A refuses to receive OSPF packets and ICMP packets received from the cO/0/1 interface. Which of the following commands can achieve this requirement? (Multiple Choice)

Question13: After the administrator successfully logs in to the router through Telnet, and finds that the router's interface IP address cannot be allocated, the possible reasons are ()

Question14: The following statements about the election of active ports in link aggregation LACP mode. Which is correct?

Question15: Which of the following is not the reason for RSTP improving the convergence speed?

Question16: ,:: 1/128 is the IPv6 loopback address.

Question17: If during the PPP authentication process, the authenticatee sends the wrong user name and password to the authenticator, what type of message will the authenticator send to the authenticatee?

Question18: In order to realize the network layer function on VLANIF interface, what need to be configured on VLANIF interface? (Multiple choice)

Question19: When the router is powered on, it will read the configuration file from the default storage path to initialize the router. If there is no configuration file in the default storage path, what will the router use for initialization?

Question20: Two authentication domains "Area1" and "Area 2" are configured on a router acting as an authentication server. If the user authenticates with the correct user name "huawei" and password "hello", this user will be assigned In which authentication domain?

Question21: The router needs to modify the destination IP address in the data packet when forwarding data packets.

Question22: In the VRP interface, use the command delete vrpcfg.zip to delete a file, which must be emptied in the recycle bin to completely delete the file.

Question23: Which of the following does not be included in AAA?

Question24: As shown in the figure below, which of the following statement is correct?

Question25: What is the number range of the Layer 2 ACL?

Question26: The load sharing mode at both ends of the Eth-Trunk can be inconsistent.

Question27: When planning the campus network, which of the following mask lengths is recommended for device interconnection IP addresses?

Question28: As shown in the figure, the switch runs STP with default parameters, which of the following ports will be elected as the designated port?

Question29: If the application layer protocol is Te1net, what is the value of the Protoco1 field in the IPv4 header?

Question30: What is the priority value of the direct route entry?

Question31: The Backup ports in RSTP may alternatively failed root port.

Question32: The RSTP protocol uses the P/A mechanism to speed up the speed of the upstream port to the Forwarding state, but what is the reason why there is no temporary loop?

Question33: The network administrator uses Ping to test the connectivity of the network. Which of the following protocols may be used in this process? (Multiple choice)

Question34: Now it is necessary to implement a Python automation script Te1net to the device to view the device running configuration. Which of the following statements is wrong?

Question35: Which stage of the life cycle of campus network construction is the beginning of a project?

Question36: Which statement about the Hybrid port is correct?

Question37: If the MAC address of an interface is 0OEO-FCEF-OFEC, what is its corresponding EUI-64 address?

Question38: Telnetlib is a module that implements the Telnet protocol that comes with Python.

Question39: The routing table output information of a router is shown in the figure. Which of the following statements is correct? (Multiple choice)

Question40: As shown in the information in the figure, when learning this switch needs to forward the frame with the destination MAC address of 5489-98ec-f011, which of the following description is correct?

Question41: Which of the following parameters is not included in the configuration BPDU of the STP protocol?

Question42: In order to join the wireless network STA needs to obtain wireless network information first. Which of the following messages is used by the STA to actively obtain the SSID information?

Question43: In the VRP interface, use the command startup saved-configuration backup.cfg. to configure the backup.cfg file for the next startup.

Question44: Which of the following levels is not a common network level in mid-sized campus network architecture?

Question45: Which of the following types does IPv6 address contain?

Question46: Which of the following fields is not included in the HELLO packet of the OSPF protocol?

Question47: IPv6 address 2001: ABEF: 2240E: FFE2: BCC0: CD0: DDBE: 8D58 cannot be abbreviated.

Question48: ip route-static 10.0.2.2 255.255.255.255 10.0.12.2 preference 20. Which is correct about this command? (Multiple Choice)

Question49: When the IPv4 protocol is used as the network layer protocol, which field is not included in the network layer header?

Question50: What is the value of the Type field in the RStp configuration BPDU message?

Question51: Which statement about SNMP protocol is correct?

Question52: There are hosts in a private network that need to access the Internet. In order to achieve this requirement, which of the following configurations should the administrator do on the edge router of the network? (Multiple Choice)

Question53: The administrator cannot log in to the Huawei router through Telnett, but other administrators can log in normally, so which of the following are the possible reasons? (Multiple Choice)

Question54: As shown in the figure, there is a web server in the private network that needs to provide HITRP services to public network users. Therefore, the network administrator needs to configure NAT on the gateway router RTA to achieve the requirements. Which of the following configuration can meet the requirement?

Question55: As shown in the figure below, which of the following statements are correct?

Question56: The device port running STP protocol is in Forwarding state. Which of the following statements is correct?

Question57: What kind of message does the OSPF protocol use to confirm the received LSU message?

Question58: Which of the following description of static and dynamic routing is wrong?

Question59: The host uses the IP address 192.168.1.2 to access the Internet, which must go through NAT.

Question60: Which extension headers are supported by IPv6 packets? (Multiple choice)

Question61: UDP cannot guarantee the reliability of data transmission, and does not provide functions such as message sequencing and flow control. It is suitable for flows with low transmission reliability requirements but high transmission speed and delay requirements.

Question62: Which of the following IEEE 802.11 standards support operation in the 5GHz frequency band? (Multiple choice)

Question63: The administrator plans to implement route backup by configuring static floating routes, what is the correct way to achieve this?

Question64: Which of the following are related to the purpose of encapsulation and decapsulation? (Multiple choice)

Question65: Which information of the data frame does the VLANIF interface use to determine whether to perform Layer 2 or Layer 3 forwarding?

Question66: When the switch port receives a data frame that does not carry VLAN TAG, it must add PVID

Question67: The network structure and OSPF partition is shown in the following figure, in addition to RTA, router RTB, RTC and RTD are ABR routers.

Question68: vty configuration as shown in the figure, the user authority level is set to level 3.
[Huawei]user-interface vty o 14
[Huawei-ul-vtyo-14]acl 200o inbound
[Huavei-ui-vtyo-14]user privilege level 3
[Huavei-ui-vtyo-14]authentication-node password Please configure the login password (maxim length 16):huawei

Question69: The wireless access controller (AC, Access Cntroller) is the unified management and control device in the FIT AP architecture. Which of the following description of the role of AC is wrong?

Question70: In the network shown in the figure below, when the OSPF neighbor status is stable, what is the neighbor status of Router B and Router C?

Question71: In the network shown in the figure below, if Router A and Router B's loopback 0 communicate through static routing, which command needs to be entered on Router A?

Question72: The two switches shown in the figure below have both enabled the STP protocol. Which port will eventually be in the Blocking state?

Question73: Which of the following characteristics does the OSPF protocol have? (Multiple Choice)

Question74: Which OSPF version below is suitable for IPv6?

Question75: An existing switch is connected to a designated port through a port, but the port does not forward any packets, but can monitor network changes by receiving BPDUs, then what is the role of the port?

Question76: As shown in the figure, all four switches run STP, and various parameters adopt default values. If the G0/0/2 port of switch C is blocked and the configuration BPDU cannot be sent through this port, how long will it take for the blocked port in the network to enter the forwarding state?

Question77: When the router forwards a data packet, if it does not match the corresponding detailed route and there is no default route, it will directly discard the data packet.

Question78: The MAC address table of the existing switch is shown in the figure. Which of the following statements are correct?

Question79: Which fields in the IPv4 header are related to fragmentation? (Multiple Choice)

Question80: Static NAT can only achieve one-to-one mapping between private addresses and public addresses.

Question81: On the broadcast network, both DR and BDR use the multicast address 224.0.0.6 to receive link state update messages.

Question82: In the network shown in the figure below, all routers run the OSPF protocol, and the link cost value is shown in the figure. What is the cost value of the route entry to the network 10.0.0.0/8 in the RTA routing table?

Question83: The router Radius information configuration is shown in the figure. Which of the following statement is correct? (Multiple Choice)

Question84: Trunk ports can allow multiple VLANs to pass, including VLAN4096.

Question85: When AP and AC are on different Layer 3 networks, what method is recommended for AP to discover AC? (Multiple Choice)

Question86: By default, the root path cost of the root bridge in the STP protocol must be 0.

Question87: On Huawei switches, you can use the command vlan batch to create multiple VLANs in batches, simplifying the configuration process.

Question88: The router output information is shown in the figure. Which of the following statements is wrong?

Question89: If the Length/Type of an Ethernet data frame is 0X8100, which of the following is correct?

Question90: Regarding the IPv6 address 2031:0000:720C:0000:0000:09E0:839A:130B, which of the following abbreviations is correct?

Question91: How many more bytes are the packets using MPLS label double-layer nesting technology than the original IP packets?

Question92: Which of the following fields does the MPLS header include? (Multiple choice)

Question93: Which version of the SNMP protocol below supports encryption features?

Question94: What are the network types supported by the OSPF protocol? (Multiple Choice)

Question95: In which working state of the STP protocol can the port be changed to the Forwarding state without going through other states?

Question96: The priority of the LACP protocol is shown in the figure. Switch A and Switch B adopt LACP mode link aggregation, and all interfaces join the link aggregation group. At the same time, set the maximum number of active ports to 3. Which interface of switch A is not active port?

Question97: What is the range of VLAN ID that users can use?

Question98: The basic header length of IPv6 packets is a fixed value.

Question99: What are the advantages of the OSPF protocol? (Multiple Choice)

Question100: PPPoE session can only use CHAP authentication.

Question101: What is the number range of advanced ACL?

Question102: What is the port number used by the FTP protocol control plane?

Question103: What kind of message does the OSPF protocol use to discover and maintain neighbor relationships?

Question104: The configuration information of a certain port of the switch is shown in the figure, then the port will strip off the VLAN TAG when sending data frames carrying which VLAN?

Question105: Which of the following descriptions about wireless devices is correct?

Question106: Which of the following statement about the TTL field in the IP packet header is correct?

Question107: Which of the following messages is used by AP to request software version from AC?

Question108: The function of 0SPF hello message is (). (Multiple Choice)

Question109: According to the command shown in the figure, which of the following description is correct? (Multiple choice )

Question110: As shown in the figure, a static NAT command is deployed on router R1. When the PC accesses the Internet, the destination address in the data packet will not change.

Question111: The classic network forwarding method is based on router routing table forwarding. The forwarding method of OpenFlow switches is based on flow table forwarding. Which of these two forwarding methods are correct? (Multiple Choice)

Question112: By default, in the SNMP protocol, which port number does the agent process use to send alarm messages to NS?

Question113: In the network shown in the figure below, two switches are connected by four links, COPPER refers to electrical interface, and FIBER refers to optical interface. Which of the following two interfaces can achieve link aggregation?

Question114: In IPv4 networks, AP supports static and DHCP methods to obtain IP addresses.

Question115: What are the following characteristics of the default VLAN in the Layer 2 Ethernet switch? (Multiple Choice)

Question116: The network administrator created VLAN 10 on the Layer 3 switch and configured an IP address under the virtual interface of the VLAN. When the command "display ip interface brief" is used to check the port status, it is found that the VLANIF 10 interface is in the down state. What should be done to restore the VLANIF 10 interface to normal?

Question117: Which state does the OSPF protocol use to indicate that the adjacency relationship has been established?

Question118: Which of the following statements about the S field in the MPLS packet header are correct? (Multiple choice)

Question119: FIT AP can work independently without relying on AC.

Question120: Among the following commands to configure the default route, which one is correct?

Question121: VRP supports OSPF multi-process. If the process number is not specified when 0SPF is enabled, the process number used by default is ().

Question122: The management of users by NAS devices is based on domains. Each user belongs to a domain, and a domain is a group of users who belong to the same domain.

Question123: By default, what is the STP Forward Delay time in seconds?

Question124: When building a campus network, which of the following protocols can be used to avoid Layer 2 loops?

Question125: What percentage does the DHCP client expect to send the lease renewal message for the first time?

Question126: UDP cannot guarantee the reliability of data transmission, and does not provide the functions of message sequencing and flow control. It is suitable for flows with low transmission reliability requirements but high transmission speed and delay requirements.

Question127: As shown in the figure below, the MAC address table of SWA is as follows. The switch can't learn the MAC address of HOST A all the time. Which of the following is impossible?

Question128: In what state does the OSPF protocol determine the master-slave relationship of DD packets?

Question129: Which of the following description about the Router ID of OSPF is incorrect? (Multiple Choice)

Question130: What is the total length of the VLAN frame format defined by IEEE802.1Q?

Question131: What address does 192.168.1.127/25 represent?

Question132: What command views exist in the VRP operating platform? (Multiple choice)

Question133: In the network shown in the figure, which of the following description is correct?

Question134: Connection between switches and hosts, which port link type is often used by the switch?

Question135: Which of the following statements is correct?

Question136: The output information of the link aggregation port of a certain switch is as follows. If you want to delete Eth-Trunk 1, which of the following commands is correct?

Question137: In the network shown in the figure below, all links are Ethernet links, and all interfaces of all routers run OSPF protocol, how many DRs are elected in the entire network?

Question138: As shown in the figure below, host A and host B cannot communicate.

Question139: If the transport layer protocol is UDP, the value of the network layer Protocol field is 6.

Question140: In the broadcast network as shown in the figure, OSPF runs on four routers in the same area and on the same network segment. OSPF will automatically elect one DR and multiple BDRs to achieve better backup results.

Question141: Which of the following statement about static routing is wrong?

Question142: As shown in the figure, if host A has the ARP cache of host B, host A can ping host B.

Question143: As shown in the figure below, router A has Telnet router B through IP address 10.0.12.2. In the current interface, which of the following operations will cause the Telnet session of Router A and Router B to be interrupted? (Multiple Choice)

Question144: On Huawei ARG3 series routers, what authentication modes does AAA support? (Multiple Choice)

Question145: SNMPv1 defines 5 protocol operations.

Question146: A device has been configured to complete the Telnet configuration. The device login address is 10.1.1.10. The Telnet user name is admin and the password is Huawei@123. Which of the following is the correct way to log in to this device using telnetlib?

Question147: Which of the following statements about the edge port in the RSTP protocol is correct?

Question148: In the campus network, network reliability can be improved by using link aggregation and stacking technology.

Question149: As shown in the figure below, the router uses a sub-interface as the gateway of the host. The IP address of the gateway is 10.0.12.2. Which of the following commands can achieve this requirement? (Multiple choice)

Question150: Telnet is based on TCP protocol.

Question151: The output information of a switch is shown in the figure. Which of the following statements is correct? (Multiple choice)

Question152: The router running the OSPF protocol can reach the FULL state after completing the LSDB synchronization.

Question153: Which of the following attributes cannot be used as a parameter to measure Cost? (Multiple choice)

Question154: In the STP protocol, which of the following factors will affect the election of the root switch? (Multiple choice)

Question155: Which of the following elements are included in the routing table? (Multiple choice)

Question156: What is the length of the Ethernet_II frame containing the Ethernet header?

Question157: Which of the following networks belong to a local area network? (Multiple choice)