EMT Practice Test

1. Question Content...

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Question1: < Huawei > system-view
[Huawei]command-privilege level 3 view user save
Refer to the command output. What is the result of the shown command?

Question2: A router in the backbone area has complete LSDBs of routers in other areas.

Question3: Which of the following is not included in the routing table?

Question4: What is the length range of an Ethernet_II frame that contains an Ethernet header?

Question5: What is the number range of an advanced ACL?

Question6: Which of the following advantages is/are provided by inter-VLAN routing in one-arm routing mode?

Question7: How many port states are involved in RSTP?

Question8: Which of the following BIDs cannot be contained in a configuration BPDU sent by a switch?

Question9: Which of the following statements is true?

Question10: Assuming that OSPF has been enabled on all routers in the following figure, which router is the BDR on this network?

Question11: Which of the following statements are true about the dynamic MAC address table?

Question12: What is the protocol number of OSPF at the network layer?

Question13: (Which of the following statements about IPv6 anycast addresses are true?)

Question14: The authentication, authorization, and accounting schemes and HWTACACS or RADIUS server templates created on AR routers take effect only after being applied to a domain.

Question15: As specified by the RSTP protocol, when a root port fails, which type of port will function as a new root port and enter the forwarding state without any delay?

Question16: If the value of the "Type/Length" field of an Ethernet data frame is 0x0800, the length range of the upper- layer packet header carried by the data frame is from 20B to 60B.

Question17: According to the one-armed routing configurations shown in the figure, even if ARP proxy is disabled on the sub-interface of R1, the Administration Dept and Finance Dept can still communicate with each other.

Question18: On the VRP platform, which of the following parameters can be used together with the "ping" command to specify the source address of an echo request message?

Question19: Which of the following statements is true about the Forward Delay timer of STP?

Question20: On a Layer 2 WLAN, STAs use an AC as their gateway.

Question21: Which of the following statements about switches is false?

Question22: As shown in the figure, all switches run STP. Assume that the path cost of all ports is 200. What is the root path cost contained in the configuration BPDU received by G0/0/4 on SWD?

Question23: In the case of Huawei routers, what is the "-i" parameter in a Ping command issued on a VRP operating system used to set?

Question24: Static NAT can only implement one-to-one mapping between private and public addresses.

Question25: Which of the following is a link-state routing protocol?

Question26: When both ends running PPP protocol detect that the physical link is active, the link state will transit from dead to establish. Which of the following protocols is used to negotiate the link parameters during this phase?

Question27: Which of the following statements about encapsulation and decapsulation are true?

Question28: Which of the following states indicates that the OSPF neighbor relationship has been established?

Question29: VLAN 4095 is reserved for system use and VLAN 1 cannot be deleted on Huawei switches.

Question30: Which of the following IEEE 802.11 standards supports a theoretical negotiated rate of 5 Gbit/s or higher?

Question31: Which of the following port statuses may exist on an STP-enabled switch?

Question32: The router that runs OSPF first enters the Full state and then synchronizes the LSDB.

Question33: If the transport-layer protocol is UDP, the value of the "Protocol" field at the network layer is 6.

Question34: The Priority field in a VLAN tag can be used to identify the priority of a data frame. What is the value range of the field?

Question35: What are the advantages of OSPF?

Question36: Which of the following operations are mandatory to restore the factory default settings of an AR2200 router?

Question37: Which of the following statements is true about root bridge election in STP?

Question38: A network administrator wishes to assign an IP address to a router interface G0/0/0. Which of the following IP addresses can be assigned?

Question39: (Which of the following OSPF packets can be used to confirm the received Link State Update (LSU) packets?)

Question40: The TCP protocol uses the three-way handshake mechanism to establish and disable connections. Therefore, TCP supports reliable data transmission.

Question41: An ACL is essentially a packet filter. An ACL takes effect only after it is applied to a service module.

Question42: If the packet matches the deny rule in an ACL, the packet is discarded.

Question43: Only one SSID can be bound to each radio of an AP.

Question44: Refer to the following configuration of an interface on a switch. What is the PVID of the interface?
interface GigabitEthernet0/0/1
port hybrid tagged vlan 2 to 3 100
port hybrid untagged vlan 4 6

Question45: Refer to the display startup command output shown in the figure. Which of the following statements are true?

Question46: (Refer to the display startup command output shown in the figure on an AR2200 router. Which of the following statements about the command output is false?)
<Huawei>display startup
MainBoard:
Startup system software: sdl:/ar2220-v200r003c00spc200.cc
Next startup system software: sdl:/ar222b-v200r003c00spc200.cc
Backup system software for next startup: null
Startup saved-configuration file: null
Next startup saved-configuration file: null
Startup license file: null
Next startup license file: null
Startup patch package: null
Next startup patch package: null
Startup voice-files: null
Next startup voice-files: null

Question47: In RSTP, a backup port can replace a faulty root port.

Question48: Refer to the following configuration of an interface on a switch. What is the PVID of the interface?
interface GigabitEthernet0/0/1
port hybrid tagged vlan 2 to 3 100
port hybrid untagged vlan 4 6

Question49: Which of the following statements about the output on the router R1 shown in the figure is false?

Question50: Network devices running SNMP can proactively report traps to help network administrators detect faults in a timely manner.

Question51: Which of the following descriptions regarding the TTL field of the IP packet is correct?

Question52: When a host uses the stateless address autoconfiguration solution to obtain an IPv6 address, the host cannot obtain the DNS server address.

Question53: Which of the following methods is not supported by the Versatile Routing Platform (VRP) to configure a router?

Question54: Which of the following packets is used by OSPF to describe its link state database (LSDB)?

Question55: (Which of the following statements is true about active interface election for an Eth-Trunk in LACP mode?)

Question56: (If a routing table contains multiple routes to the same destination network, what are these routes called?)

Question57: (Loops may cause broadcast storms on a Layer 2 network.)

Question58: On the VRP, when the mkdir test command is run, the system creates a directory named test.

Question59: (An administrator cannot log in to a Huawei router through Telnet, but other administrators can log in to the router. Which of the following are possible causes?)

Question60: Which of the following methods is not used for logging in to the VRP system?

Question61: Assume that an OSPF-enabled router has no loopback interface configured. What would be used as the router ID?

Question62: While inspecting packets in the network, a network administrator discovers a frame with the destination MAC address of 01-00-5E-A0-B1-C3. What can the administrator determine from this?

Question63: On the VRP CLI, files cannot be permanently deleted using the delete or delete /unreserved command. To permanently delete them, you need to delete the files in the recycle bin.

Question64: The country code configuration affects the actual transmission frequency and maximum transmission power.

Question65: Which of the following commands sets the data forwarding mode on an AC to direct forwarding?

Question66: SDN requires the control and forwarding planes to be separated.

Question67: SNMP packets are transmitted by UDP.

Question68: After the administrator performs the configuration shown in the figure on a router, which of the following commands can be used to specify a short lease for addresses assigned using DHCP?

Question69: Which of the following port states is not included in Rapid Spanning Tree Protocol (RSTP)?

Question70: Which of the following is the default value of the Router Dead Interval field in OSPF Hello packets on a broadcast network?

Question71: What function does Ctrl+Z have in the VRP system?

Question72: (Each network device running SNMP runs an agent process locally.)

Question73: If the network administrator assigns the IPv4 address 192.168.1.1/28 to a host on the network, how many hosts can be added to the network where the host resides?

Question74: (What is the main function of a dynamic routing protocol?)

Question75: On the Huawei VRP, what is the default preference of different route types, in descending order?

Question76: An administrator wishes to manage the router in the remote branch office, which method can be used?

Question77: In the following figure, all links are Ethernet links, and all interfaces on the routers are running OSPF. Given this, how many DRs will be elected on this network?

Question78: Dynamic routing protocols can automatically adapt to network topology changes.

Question79: In STP, the bridge ID on the switching network is as follows. With which of the following bridge IDs is the switch selected as the root bridge?

Question80: For an Eth-Trunk in LACP mode, what is the default LACP system priority of a Huawei switch?

Question81: In RSTP mode, both alternate and backup ports cannot forward user traffic and cannot receive, process, and send BPDU.

Question82: The router that runs OSPF first enters the Full state and then synchronizes the LSDB.

Question83: The following figure shows the display interface Eth-Trunk 1 command output on SWA. In the MAC address table of SWA, which of the following interfaces maps the MAC address of SWB?

Question84: Which of the following commands can switch a view from the system view to the user view?

Question85: When the ACL in the following figure is configured on a Telnet server, only the device with an IP address of
172.16.105.2 can remotely log in to the Telnet server.
bash
Copy code
acl number 2000
rule 5 permit source 172.16.105.2 0

Question86: Trunk interfaces can send both tagged and untagged frames.

Question87: During STP calculation, the port cost is associated with the port bandwidth by default. Which of the following statements about the relationship between port cost and port bandwidth is true?

Question88: Which of the following parameters is used to elect the root bridge in STP?

Question89: Which of the following is not a common network layer in a midsize campus network?

Question90: An administrator wishes to configure a floating static route. In order to successfully achieve this, which operation should be performed?

Question91: What are the advantages of using DHCP to allocate IP addresses?

Question92: What is the protocol of the Router Advertisement (RA) packet, which is used in IPv6 stateless address auto- configuration?

Question93: On Huawei routers, which of the following is the default preference of static routing?

Question94: telnetlib is a module provided by Python to implement the Telnet protocol.

Question95: On the network shown in the figure, Host A and Host B cannot communicate with each other.

Question96: The following figure shows the display stp command output on an STP-enabled port - Ethernet 0/0/1.
Which of the following statements about the command output is false?

Question97: Which of the following network types does OSPF support?

Question98: A trunk interface allows frames from multiple VLANs including VLAN 4096.

Question99: A routing entry contains multiple fields. Which of the following statements about these fields is false?

Question100: As shown in the figure, the host has ARP cache. Host A sends a data packet to host B. Which of the following are the destination MAC address and destination IP address of the data packet?

Question101: If the application-layer protocol is Telnet, what is the value of the "Protocol" field in the IPv4 header?

Question102: Loops may cause broadcast storms on a Layer 2 network.

Question103: Refer to the following configuration of an interface on a switch. For which VLAN does the interface transmit tagged data frames?
interface GigabitEthernet0/0/1
port hybrid tagged vlan 2 to 3 100
port hybrid untagged vlan 4 6

Question104: The IP address 192.168.1.127/25 represents a ( ) address.

Question105: (The IP addresses of VLANIF interfaces on the same switch must be different.)

Question106: What packet types are included in DHCP?

Question107: Which of the following IPv4 addresses can be directly used by a host to access the Internet?

Question108: If a device running STP receives an RSTP configuration BPDU, it discards the BPDU.

Question109: Network Address and Port Translation (NAPT) allows multiple private IP addresses to be mapped to the same public IP address through different port numbers. Which of the following statements about port numbers in NAPT is true?

Question110: Which of the following are features of the OSPF protocol?

Question111: (Network Functions Virtualization (NFV) implements software-based network application deployment.)

Question112: When an AP and an AC are located on different Layer 3 networks, which of the following methods is recommended for the AP when discovering the AC?

Question113: An ACL rule is as follows. Which of the following IP addresses can be matched by the permit rule?
rule 5 permit ip source 10.0.2.0 0.0.254.255

Question114: When two switches are connected through link aggregation, what are the requirements for the interfaces on the two switches?

Question115: (Which of the following routing protocols are dynamic routing protocols?)

Question116: IPv6 uses NS and NA packets to perform duplicate address detection (DAD).

Question117: Which of the following IP addresses can be used by another host to communicate with the host whose IP address is 200.200.200.201/30 without the need to forward traffic through a router?

Question118: According to the VTY user interface configuration shown in the following figure, the user level is set to 3.

Question119: On the network shown in the figure, the router receives a data packet with the destination IP address 11.0.12.1 from Host A.

After the packet is forwarded by the router, which of the following are the destination MAC address and destination IP address of the data packet?

Question120: If the broadcast address of a network is 172.16.1.255, which of the following addresses is the network address?

Question121: What is used as the data link-layer MAC address that identifies each VAP on an AP?

Question122: When a switch receives a unicast data frame, if the destination MAC address of the data frame can be found in the MAC address table of the switch, the data frame is definitely forwarded through the port corresponding to the MAC address.

Question123: A company applies for a class C IP address for subnetting. It has eight branches, and the largest branch has a subnet that should support at least 14 hosts. What would be an appropriate subnet mask?

Question124: If AAA authentication is used on Huawei devices and the remote server does not respond, the authentication can be performed on network devices.

Question125: (An Eth-Trunk interface can be used only as a Layer 2 interface.)

Question126: Which is a valid EUI-64 address?

Question127: Which of the following port states is not included in Rapid Spanning Tree Protocol (RSTP)?

Question128: Which of the following port numbers is used by the FTP control plane?

Question129: What is the default lease time of the IP address allocated by the DHCP server?

Question130: Which of the following fields are included in an MPLS header?

Question131: Which of the following mask lengths is recommended for device interconnection IP addresses during campus network planning?

Question132: Assuming all STP enabled switches have the same bridge priority. The MAC address of switch A is 00-e0-fc-
00-00-40, the MAC address of switch B is 00-e0-fc-00-00-10, the MAC address of switch C is 00-e0-fc-00-
00-20, and the MAC address of switch D is 00-e0-fc-00-00-80. Which switch will be elected as the root switch?