EMT Practice Test

1. Question Content...

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Question1: Which of the following are the advantages of electing DR/BDR in the MA network? (Multiple choice)

Question2: Which of the following steps or actions are step-by-step in a structured network troubleshooting process? (Multiple choice)

Question3: As shown in the picture, there are the following configurations under BGP. Which of the following descriptions is wrong? (Multiple choice)
[HUAWEI-bgp] timer keepalive 30 hold 90
[HUAWEI-bgp] peer 1.1.2 timer keepalive 10 hold 30

Question4: Which of the following statements about the BFD detection mode is correct? (Multiple choice)

Question5: In the OSPF routing protocol, the unit of the bandwidth-reference command is Mbps.

Question6: In the OSPF routing protocol, the calculation of intra-area routes involves only Router LSA, Network LSA and Summary LSA.

Question7: As shown in the figure, R1 and R2 form a VRRP backup group 1. By executing the vrrp vrid 1 vitual-ip () command on R1, you can make it the IP address owner, let R1 be the Master and R2 as the Backup.

Question8: R1, R2, R3, R4 run OSPF, the area ID is as shown in the figure, then () will generate Type-3 LSA. (Please fill in the device name, such as R1)

Question9: By default, on a router running IS-IS in a broadcast network, which of the following options is the period for DIS to send CSNP messages?

Question10: As shown in the figure, in the MA network, if R1 must be the DR, R2 must be the BDR, and R3, R4, and R5 do not participate in the election, then the dr-priority of R1 is at most _______; the dr-priority of R2 is_ _______; the dr-priority of R3 is __________; the dr-priority of R4 is ________; the dr-priority of R5 is
_________. (Please fill in the Arabic numerals)

Question11: Which of the following is the most effective way to view device alarms through CL?

Question12: In the IS-IS broadcast network, which multicast MAC address does the Level-2 router use as the destination address for sending lH?

Question13: By default, the VRRP of Huawei AR routers runs in preemptive mode.

Question14: A Layer 2 switch is a data link layer device that can identify the MAC address information in a data frame, forward data according to the MAC address, and record these MAC addresses and corresponding port information in its own MAC address table.

Question15: Route redistribution refers to the operation of only advertising routing information from one routing protocol to another routing protocol.
Which of the following statements about route introduction is correct? (Multiple choice)

Question16: As shown in the figure, the output information of R1 is as follows, then the Router ID of the neighbor router of R1 is () (Multiple choice)

Question17: Which of the following types of headers is carried on the BFD detection message?

Question18: Regarding the description of the Keepalive message of BGP, the error is:

Question19: Which of the following IP address ranges are not multicast address ranges? (Multiple choice)

Question20: As shown in the picture, which of the following statements is correct?

Question21: Which of the following descriptions of the AC roaming group is wrong? (Multiple choice)

Question22: Which of the following are multi-channel protocols? (Multiple choice)

Question23: Which statement is wrong about the VRRP timer? (Multiple choice)

Question24: Which of the following descriptions about URPF (Unicast Reverse Path Forwarding) is correct?

Question25: A VRRP virtual router is configured with a VRID of 3 and a virtual IP address of 100.1.1.10, so which of the following is the virtual C address?

Question26: As shown in the figure, the four Huawei switches have been running and configured with the MSTP protocol. Now it is necessary to set SW3 as the root bridge of Instance 10. Which of the following commands can be used to achieve this? (Multiple choice)

Question27: If two devices are connected, and one of them supports BFD detection function, while the other device does not support it, which functional feature of EFPD can be used by the device supporting BED detection function to realize link connectivity detection?

Question28: Add the interface GE1/0/1 to the trusts security zone on the Huawei firewall. At this time, the GE1/0/1 interface belongs to the () security zone. (All lowercase)

Question29: How long is the default lease period of the DHCP address pool?

Question30: IGMP3 not only supports the past group query of IGMPv1 version and the specific group query of IGMPv2 version, but also supports the specified source/group query of IGMPv3 version

Question31: A certain network structure and OSPF partitions are shown in the figure. In the figure, except RTA, RTB, RTC and RTD are all ABR routers.

Question32: Does the BGP protocol use () messages to revoke routing entries? (All English lowercase)

Question33: Structured network troubleshooting procedures include:
1. Collect information
2. Confirm failure
3. List of reasons
4. Troubleshooting assessment
5. Judgment analysis
6. Check one by one
7. Troubleshooting.
Which of the following is the correct order?

Question34: Regarding the multicast ASM model and SSM model, which of the following statements are correct?
(Multiple choice)

Question35: In OSPF, the elected DR and BDR in the broadcast type network listen to both the 224.0.0.5 address and the 224.0.0.6 address.

Question36: Which of the following techniques can effectively prevent ARP spoofing attacks? (Multiple choice)

Question37: When the stateful inspection firewall forwarding a subsequent packet (non-first packet), which is mainly based on the following items?

Question38: Which of the following VPN technologies may have two IP packet headers in one packet? (Multiple choice)

Question39: Regarding the range of BGP AS numbers, which of the following descriptions are incorrect? (Multiple choice)

Question40: As shown in the figure, the management VLAN of LAN is VLAN 10. AP obtains IP address through DHCP, and the network segment is 10.1. 1.0/24 AP, AC and AR are respectively DHCP client, DHCP relay device and DHCP server. (Multiple choice)

Which of the following is the correct configuration of the DHCP relay device and DHCP server?

Question41: Which of the following BGP attributes are not required to be included in the Update message of BGP routing? (Multiple choice)

Question42: RTA is the source DR router and RIB is the RP router. The multicast source sends multicast data to RTA, but the multicast source registered with it through the PIMRegister message cannot be seen on the RIB. What are the possible reasons? (Multiple choice)

Question43: When troubleshooting the VRRP backup group flapping fault, you execute the vrrp vrid timer advertise command on the router to increase the interval for sending VRRP packets, and then repeatedly execute the display vrrp command on the Backup device to check the State field, and find that the information has remained unchanged. Which of the following statements about the above operation is correct?

Question44: In the VRP system, which of the following descriptions about OSPF cost (Cost) is wrong?

Question45: Which of the following routing protocols does not belong to IGP?

Question46: What does the project implementation plan mainly include? (Multiple choice)

Question47: Which of the following is a subprocess or phase of the structured network troubleshooting process?
(Multiple choice)

Question48: In a broadcast type network, what is the default time interval for DIS to send Hello?

Question49: As shown in the figure, the four switches have run the RSTP protocol and completed the calculation of the spanning tree.

So, which of the following descriptions about port roles are correct? (Multiple choice)

Question50: Which of the following descriptions about the stack topology connection method is wrong?

Question51: Which of the following descriptions about IPsec IKEv1 is correct?

Question52: In PIM-DM, if a new member joins the multicast group, which of the following descriptions are correct?
(Multiple choice)

Question53: Which statement about IGMP Proxy is correct? (Multiple choice)

Question54: Which of the following OSPF messages carry master-slave relationship information?

Question55: As shown in the figure, it is part of the output information of the router RTD. In the following description of the output information, which option is correct?

Question56: Whether a non-edge port moves to the forwarding state is one of the criteria for RSTP to detect topology changes.

Question57: In the structured network troubleshooting process, which of the following stages require escalation or notification of fault conditions to other departments? (Multiple choice)

Question58: In IGMPv2, what is the default maximum response time for general group queries in seconds?

Question59: The default security zones created by Huawei Firewall are untrust, dmz, and local (all lowercase). ()

Question60: What preparations need to be made before large-scale network changes? (Multiple choice)

Question61: In the network as shown in the figure, all switches run the RSTP protocol. If the E1 interface of SWB fails, when the RSTP process, then what will happen? (Multiple choice)

Question62: In PIM-DM, the router will start a pruning timer for the pruned downstream interface, and the interface will resume forwarding after the timer expires.
How many seconds is this timer by default?

Question63: When running OSPFv3 on a Huawei router, the OSPFv3 process will automatically select an interface address as the router ID of the process.

Question64: ASPF (Application Specific Packet Filter) is a packet filter based on the application layer. It checks the application layer protocol information and monitors the connected application layer protocol status, and implements a special security mechanism through the Server Map table. Which of the following statements about ASPF and Server map table is wrong?

Question65: In the VRP system, which of the following parameters can the Route-Policy match? (Multiple choice)

Question66: Routers R1 and R2 establish an OSPF neighbor relationship. When R1 receives an LSU message from R2, which of the following methods will it use to inform R2 that it has received the LSU?

Question67: When the BFD detection interval at both ends is 30ms and 40ms respectively, which of the following descriptions is correct?

Question68: Telemetry is mainly used to monitor the network, including packet inspection and analysis, security intrusion and attack detection, intelligent data collection, application performance management, etc.
Which of the following descriptions about Telemetry is wrong?

Question69: The output of a device viewing LSDB is shown in the figure. According to the content analysis in the figure, what information can we obtain? (Multiple choice)

Question70: Which of the following descriptions about LSA and LSDB are wrong? (Multiple choice)

Question71: When the MTU of the interconnection interface of two routers in the broadcast network does not match, and the interface is configured with ospf mtu-enablet, which of the description of the state change of the neighbor relationship between the two routers is correct?

Question72: What are the three ways to send IPV4 packets? (Multiple choice)

Question73: As shown in the figure, SWA, SWB and SWC all run the RSTP protocol, so which one of the following descriptions about port roles is correct?

Question74: What are the main difficulties in cutover? (Multiple choice)

Question75: Which of the following description of BGP features is false?

Question76: On a broadcast or NBMA network, not all neighbors will establish an adjacency relationship.

Question77: One of the characteristics of OSPF is that it only supports MD5 authentication.

Question78: Which of the following descriptions about the four forwarding models of WLAN roaming traffic are correct? (Multiple choice)

Question79: There are many employees in a certain enterprise building, and they usually start to connect to the company's WLAN network in the lobby when they go to work. As each employee walks to their respective workstations, each person's mobile terminal roams through roaming to their respective network coverage areas.
In order to try to ensure that the IP address of each terminal is fixed, what is the recommended method?

Question80: What parameters can the DHCPV6 server assign to the DHCPv6 client? (Multiple choice)

Question81: If the Length/Type=O*8100 of an Ethernet data frame, which of the following options may the data frame be sent from? (Multiple choice)

Question82: It can be used in a variety of routing protocols. The routing selection tool consisting of if-match and apply clauses is:

Question83: Which of the following statements about multicast packet forwarding is correct?

Question84: Which of the following statements about the characteristics of a high-availability network are correct?
(Multiple choice)

Question85: ACL can be divided into which of the following categories? (Multiple choice)

Question86: As shown in the figure, the stateful inspection firewall will forward the message because the message conforms to the firewall session state.

Question87: Which of the following attacks is not a network layer attack?

Question88: Which function does the switch control plane not include?

Question89: There is an existing switch connected to a designated port through a certain port, but this port does not forward any packets, but can monitor network changes by receiving BPDUs, so which of the following options should the role of this port be?

Question90: The output information of a router is as follows. Which of the following statements is correct? (Multiple choice)
<R1>display ospf interface Gigabitethernet 0/0/0
OSPF Process 1 with Router D 10.1.1.1
Interface: 10.0. 12.1 (Gigabitetherneto/0/0)
Cost: 1 State: DR Type: Broadcast MTU: 1500
Priority: 1
Designated Router: 10.0. 12.1
Backup Designated Router: 10.0.12.2
Timers: Hello 10, Dead 40, Poll 120, Retransmit 5, Transmit Delay 1

Question91: Ethernet is currently the most mainstream LAN. What factors should be considered when selecting an Ethernet network? (Multiple choice)

Question92: When the BGP routing protocol is configured on the network, you can see a routing entry by using commands on the router to view the BGP routing table, but you cannot find the BGP route in the global routing table of the router. What are the possible reasons? (Multiple choice)

Question93: The function of Hello message in PIM-SM is? (Multiple choice)

Question94: The default time interval for sending BFD detection packets is:

Question95: If you want to realize communication between different protocols, you can only use the method of routing import.

Question96: In the inter-domain report filtering, which option of the following is in the outbound direction?

Question97: If IGP routing wants to become a BGP routing, it can only be done through the network command.

Question98: Which of the following descriptions about DIS in IS-IS is wrong?

Question99: What is the meaning of B in the FLAG field in the forwarding table?

Question100: Please match the following IGMP versions with the corresponding working mechanism (Drag and drop questions)

Question101: Regarding BGP MED, which of the following descriptions are correct? (Multiple choice)

Question102: A switch runs the RSTP protocol, and its related configuration information is shown in the figure. According to the command configuration, please point out that for Instance 1, the role of the switch is:

Question103: The output information of a router is below, which is correct about this information?

Question104: Which of the following configurations must be included in order for non-directly connected EBGP neighbors to be established normally? (Multiple choice)

Question105: Which of the following fields are included in the 0SPF Hello packet? (Multiple choice)

Question106: The FIB table is located on the data plane of the router, and each forwarding table entry specifies information such as the outgoing interface and the next-hop IP address to reach a certain destination.
Which of the following meanings does the B field in FLAG represent?

Question107: In WLAN networking, backup technologies can be deployed to ensure the reliability of the networking.
Which of the following statements about backup technology is correct? (Multiple choice)

Question108: Which of the following multicast protocol capable of generating a multicast distribution tree?

Question109: R1, R2 , R3 and R4 run IS-S , and the DIS Priority of their interfaces is shown in the figure. If the devices start at the same time, () will be elected as D1S. (Please fill in the device name, such as R1)

Question110: Regarding the following configuration commands for issuing default routes for each protocol, which of the description is wrong?

Question111: In VRRP, when the device status becomes Master, it will immediately send a gratuitous ARP to refresh the MAC entry of the downstream device, thereby directing user traffic to this device.

Question112: Which of the following descriptions about the Master device in the VRRP protocol is wrong?

Question113: For two routers running IS-IS, the adjacency relationship can be established only when the time interval of lH transmission is the same

Question114: Through display current-configuration, you can see the running configuration in memory.