EMT Practice Test

1. Question Content...

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Question1: What improvements have been made to the IGMPv2 protocol compared to IGMPv1? (Multiple Choice)

Question2: Regarding BGP recognized arbitrary attributes, which of the following descriptions are correct? (Multiple choice)

Question3: The following statements about the ISIS protocol route aggregation, which are correct?

Question4: The correct description in the following of BGP loop protection is: (Multiple Choice)

Question5: During the evolution from IPv4 network to IPv6, some transition technologies have emerged. Which of the following are common types of transition technologies? (Multiple questions)

Question6: Router R1 runs the 0SPF protocol. Use the display ip routing-table command to view the routing table of the Router R1. Which of the following description is correct about the 0SPF information in the routing table?

Question7: Which of the following about the description of VRRP fast switching is wrong? (Multiple Choice)

Question8: IS-IS supports multi-instance and multi-process, that is, on an IS-IS router, multiple VPN instances can be configured to be associated with multiple IS-IS processes. Which of the following descriptions of IS-IS multi-instance and multi-process are correct? (Multiple choice)

Question9: IS-IS supports the process and calculation of IPv6 routes by adding new TLV carrying IPv6 addresses and reachability information.

Question10: As shown in the following topology diagram, all the interfaces of the router in the figure are all enabled with the ISIS protocol. The correct statements of the following are: (Multiple Choice)

Question11: Which of the following statements about RADIUS is correct?

Question12: Which of the following descriptions of MED is correct? (Multiple questions)

Question13: Which of the following statement about IPSG technology is correct?

Question14: As shown in the figure, the MP-BGP neighbor relationship is established between PE1 and PE2 through Loopback 0 interface. After the configuration is completed, it is found that CE1 and CE2 cannot learn the path from each other. Which of the following options will cause this problem? (Multiple choice)

Question15: The OSPF protocol is running on a company network. To understand the OSPF mechanism to perform packet capture operations on the network, which of the following description about the OSPF packet is correct? (Multiple Choice)

Question16: Which of the following statements about VLAN aggregation are correct? (Multiple questions)

Question17: RD is used to distinguish the same IP address in different VPNs. How many bits does the RD contain?

Question18: The correct description of the prefix list is: (Multiple Choice)

Question19: The existing route-policy is as follows:
ip community-filter 1 permit 100:1
ip as-path-filter 2 permit ^100$
route-policy test permit node 10
if-match community-filter 1
If-match as-path-filter 2
Apply as-path 200
About the above configuration description, which is correct?

Question20: What are the wrong statements about OSPF Router LSA and Network LSA? (Multiple questions)

Question21: You hope that only telnet traffic can access the server (the address is 10.1.1.100).
Then, you added the following ACL on the router:
rule 5 permit tcp source any destination 10.1.1.100 0.0.0.0 destination-port eq 23 rule 10 deny ip source any destination any Then you apply the ACL to the ingress direction of the serial interface of the router. Which of the following types of packets will be allowed to pass through the router?

Question22: As shown in the following figure, R1 and R2 establish the neighbor relationship of Level2. The key configuration is as follows. Which of the following statement about the R2 route entry is correct? (Multiple choice)

Question23: Which of the following scenarios is not suitable for deploying interface policy routing?

Question24: When configuring AS-Path-Filter, ip as-path-filter 10 permit_100$ means to match the route received from A5100 but not originating from AS100.

Question25: Regarding the interpretation of the domain-authentication-mode md5 hello command in the ISIS process, which of the following is correct?

Question26: As-path-filter:ip as-path-filter 1 permit*(1001400 ) $ is existing, which AS_PATH attributes may be matched by the As-path-filter?

Question27: Because BGP is the EGP routing protocol, BGP routing policies can only be deployed between EBGP neighbors, and routing policies deployed between IBGP neighbors are invalid.

Question28: Which of the following descriptions are correct about IGMPv1 and IGMPv2? (Multiple choice)

Question29: How many bits are there in the tag field of MPL S?

Question30: To achieve the traffic filtering function, you can use traffic-filter or MQC. Compared with traffic-filter, MQC can be called in more views.

Question31: Two routers are connected through the serial port, but the interconnect interface cannot be pinged.
Now check the port status as follows:

From the above information can determine what is the reason?

Question32: Which types of messages are supported by the BGP protocol? (Multiple Choice)

Question33: Which of the following categories can ACL be divided into?

Question34: Which of the following description about the address resolution function of NDP is wrong?

Question35: Regarding BGP route filtering, which of the following description is wrong? (Multiple Choice)

Question36: Which type of LSA cannot in the OSPF stub area? (Multiple Choice)

Question37: Which of the following statements are correct about PPPoE data frames? (Multiple Choice)

Question38: Which of the following description is wrong about BGP routing selection?

Question39: SSH uses asymmetric encryption algorithms AES and DES to realize the security of data transmission, and uses HMAC to ensure the integrity of the data.

Question40: Which of the following BGP attributes are not required to be included in the Update message of BGP routing? (Multiple choice)

Question41: What is the main reason why RSTP converges faster than STP?

Question42: If the PPP link between R1 and R2 is shown, and the direct connection port is not on the same network segment, but the R1 and R2 direct connection ports can communicate, and the Ethernet link cannot communicate under the same IP planning, what is the reason? (Multiple choice)

Question43: Mainstream Layer 2 tunneling technologies include VXLAN, TRILL, NVGB and MPLS.

Question44: Which of the following about the RD attribute filter of BGP is correct? (Multiple Choice)

Question45: Which of the following description about configuring BGP4+ is correct? (Multiple choice)

Question46: Regarding BGP/MPLS IP VPN routing interaction, which is wrong in the following description?.

Question47: How does the IGMPv2 router maintain the network segment group membership? (Multiple choice)

Question48: A campus deploys OSPF to achieve network interoperability. An engineer configures R2 as shown in the figure. What is wrong with the following description of LSA in the OSPF network?
[R2] acl 2000
[R2-acl-basic-2000] rule deny
[R2-acl-basic-2000] quit \
[R2] ospf
[R2-ospf-1] area 1
[R2-ospf-1-area-0.0.0.1] filter 2000 import
[R2-ospf-1-area-0.0.0.1] quit
[R2-ospf- 1] default-route-advertise always

Question49: Compared with the OSPFv2 message header, what fields are added in the OSPFv3 message header?

Question50: As shown in the figure, R1, R2, and R3 run OSPF at the same time and announce their respective loopbacks. Which of the following description is wrong?

Question51: As shown in the figure, in the IPv4 and IPv6 environment, the SEL field in the ISIS NET address always takes the value 00.

Question52: Which of the following description about the OSPF virtual link is true?

Question53: BGP4+ uses the Next_Hop attribute in the Update message to carry the next hop address of the IPv6 route.

Question54: Regarding the introduction of routes, which of the following description is wrong?

Question55: In route-policy, what are the BGP attributes that can be used in the apply clause? (Multiple Choice)

Question56: As shown in the configuration, if the administrator configures OSPF on R1 but R1 cannot learn the routes of other routers, what are the possible reasons? (Multiple Choice)
[R1] ospf
[Rl-ospf-1] area 2
[R1-ospf-1-area-0.0.0.2] network 10.0.13.1 0.0.0.0

Question57: In an MPLS VPN network, different CE devices can exchange routing information with the same PE device using different routing protocols. The routing protocols used between different CE devices and the same device are independent of each other.

Question58: The network administrator defines a traffic monitoring strategy as follows: The router port to which the strategy is applied has been idle for about 10 seconds. At this time, a huge burst of traffic of type c1 arrives in an instant, then How many bytes will there be of the data packets colored in green?

Question59: What is the three-layer logical interface used to implement different VXLAN virtual network communication on the VXLAN L3 Gateway?

Question60: Which of the following are used in Ethernet networks? (Multiple Choice)

Question61: The Next Header field information only exists in the IPv6 message and is used to indicate whether there is an extended header in IPv6.

Question62: Broadcast-type network, starting the election of DIS after the establishment of the neighbor relationship.

Question63: If running PIM-SM on a multicast network, you need to construct a multicast forwarding tree between the multicast source and the receiver to enable the receiver to receive multicast data. Which of the following description about the constructed multicast forwarding tree is correct? (Multiple Choice)

Question64: The IS-ISL eve 1-1 neighbors of R3 and R4 are not established. According to the information in this figure, what are the possible reasons?
[R3] display isis error Hello packet errors: ... ... Repeated System ID: 0 Bad Circuit Type 0 Bad TLV Length: 0 Zero Holding Time 0 Unusable IP Addr: 0 Repeated IPv4Addr 0 Mismatched Area Addr ( L 1 ) :13 Mismatched Proto 0 SNPA Conflicted(L AN): 0 Mismatched Level 0 Mismatched Max Area Addr: 0 Bad Authentication 0 ... ... [R3]

Question65: The security zones provided by Huawei firewall by default are: (Multiple Choice)

Question66: Router A has an IP router with a destination network segment of 10.0.0.1/32 and an outbound interface of Gigabitethernet 0/0/1.
Now add the following configuration
acl number 2000
rule 10 permit source 10. 0.1.1 0
traffic classifier test
if-match acl 2000
traffic behavior test
remark dscp cs3
traffic policy test
classifier test behavior test
interface Gigabitethernet0/0/1
ip address10.0.12.1255.255.255.0
traffic-policy test outbound
Suppose Router A receives a packet with a destination IP of 10.0.0.1. The following statements which are correct? (Multiple Choice)

Question67: Which of the following description of BGP neighbors are wrong? (Multiple questions)

Question68: Which is wrong about IPv6 Over VXLAN?

Question69: As shown in the following figure, the corresponding peer relationship is established. The AS400 receives the 1.1.1.1/32 network route from the AS100. What is the AS-Path attribute?

Question70: What are the benefits of OSPF area division? (Multiple choice)

Question71: The RSTP protocol provides a variety of protection functions. For example, when the edge port is configured in the protection state, the processing method after the edge port receives the BPDU message is:

Question72: As shown in the figure, a park deployed IPv6 for service testing. There are 4 routers in the network, running OSPFv3 to achieve network interconnection.

Regarding the LSA generated by the OSPFv3 network, which of the following statements is wrong?

Question73: Which of the following statements about VPNv4 addresses is wrong?

Question74: When the ABR is NSSA region of the 5/7 type LSA when changing dedicated router, then the ABR can 7 classes LSA converted from 5 classes LSA polymerization.

Question75: ISIS will elect DIS in the broadcast multi-access network. Which of the following statement about DIS is correct? (Multiple Choice)

Question76: An existing switch runs the RSTP protocol. If the network topology changes, what will happen to the Layer 2 forwarding entries automatically learned by the switch?

Question77: Regarding the OSPF command description, which ones are incorrect? (Multiple choice)

Question78: If the router only needs to forward IPv6 packets, there is no need to configure any IPv4 protocols and addresses on the router.

Question79: ISIS does not send CSNP packets under the P2P network type during the neighbor establishment process.

Question80: Which of the following statements about the description of the firewall security zone is correct?

Question81: The filter policy 2000 export is configured in the IS-IS process. Which of the following is wrong about the function of this command?

Question82: Which of the following statements about the BFD detection mode are correct? (Multiple choice)

Question83: Which of the following descriptions about MP-BGP is wrong?

Question84: When the payload is an ICMPv6 packet, if the extended header is not considered, what is the value of the Next Header field in the IPv6 header?

Question85: In the command aggregate ipv4-address {mask | mask-length} [ as-set | attribute-policy route-policy-name1 | detail-suppressed | origin-policy route-policy-name2 | suppress-policy route-policy-name3], multiple parameters can be used to influence the summary route and its results.
What is the correct description about this command? (Multiple Choice)

Question86: If there are multiple receivers in a multicast group, the administrator enables IGMP-Snooping on the switch connecting the receiver. After the receiver receives the general query message from the querier, the receiver receives multiple receivers. How to respond?

Question87: What are the comparison items of the main switch election in the stack? (Multiple questions)

Question88: What is the meaning of ipv6 enable topology ipv6 in IS-IS protocol view?

Question89: As shown in the figure below, R1, R2, and R3 have enabled IPv6 in the ISIS process and established a Leve12 neighbor relationship. Which of the following statements are correct about the IP routing table of R3? (Multiple choice)

Question90: When DLDP detects that a unidirectional link exists in the optical fiber, the default operations of the Huawei device include: DLDP state machine migrates to the Disable state, outputs trap information, automatically sets the interface to the blocked state.

Question91: Which of the following descriptions of the OSPF protocol are correct? (Multiple choice)

Question92: Combined with the output of the following figure, which of the following judgment is correct? (Multiple choice)

Question93: A routing tool can define multiple entries.
Which tool will automatically add a deny-any entry at the end of the configuration? (Multiple Choice)

Question94: Which property subject to the following two conditions?
(1) BGP router A can choose whether to carry this attribute in the Update message.
(2) if the router B receives the packet's attribute Update packet, router B cannot recognize the property, but will also contain the property Update message is advertised by the curved path to c router c possible to identify and use The attribute. (Multiple choice)

Question95: As shown in the figure, which of the following options can satisfy two routers to establish ISIS neighbors?

Question96: A total of 6 bits indicating the priority field in the VLAN (802.1Q) data encapsulation

Question97: Intranet users of a certain company use NAT's No-pat method to access the Internet. If all public IP addresses are used, what will happen to intranet users who subsequently go online?

Question98: If there is a run 802.1D spanning tree protocol Local Area Network. Which of the following parameters does non-root switch not receive from the root switch?

Question99: Regarding the stub area in the OSPF protocol, the following statement which is correct? (Multiple Choice)

Question100: Regarding the site in the BGP/MPLS IP VPN network architecture, which of the following descriptions is correct?

Question101: Which of the following statements about IS-IS Hello packets are correct? (Multiple choice)

Question102: When an administrator wants to manage some routes on the router during operation and maintenance, which of the following tools can mark these routes so that the administrator can configure the policy? (Multiple Choice)

Question103: Configure queue-based traffic shaping. If the queue length exceeds the cache size, the tail is discarded by default.

Question104: The following topological diagrams are available, which of the following statements are correct? (Multiple Choice)

Question105: Regarding the description of the label encapsulation format in MPLS, which is correct? (Multiple questions)

Question106: In the process of using the LACP protocol, which of the following description is correct? (Multiple choice)

Question107: As shown in the figure, the AS100 has two paths to the AS400. By default, the best route is transmitted from the AS200. It is known that the path to the AS400 through the AS300 is better. Therefore, the following configuration is performed on the R2. After the configuration is complete, the optimal route is not changed. Which of the following operations can make the configuration take effect?
[R2] ip as-path-filter 1 permit ^400$
R2] route-policy med permit node 10
r2-route-policy] if-match as-path-filter 1
Ir2-route-policy] apply cost 20

Question108: As shown in the figure, SWA and SWB run the RSTP protocol, and Cost of Path has not been modified to keep the default. Which of the following statements is correct?

Question109: Which of the following descriptions about TTL in the MPLS header are correct? (Multiple choice)

Question110: Which of the following is true about the ISIS LSP fragmentation extension?

Question111: A bookstore provides a wired network for customers to learn online. However, some users are found unable to access the network one day. After checking, the IP resource of the DHCP address pool has been exhausted. Which of the following is the best way to solve the current problem?

Question112: What is the value of OSPF and BFD linkage?

Question113: Regarding the multicast ASM model and the SSM model, which of the following statements are correct? (Multiple choice)

Question114: The attacker responds to the request by sending ICMP and sets the destination address of the request packet to the broadcast address of the victim network to achieve the purpose of the attack.
So what kind of attack does this behavior belong to?

Question115: When running OSPFv3 on a Huawei router, the OSPFv3 process will automatically select an interface address as the Router ID of the process.

Question116: Regarding the description of the extended features of ISIS, which of the following is correct? (Multiple Choice)

Question117: About the description of CHAP authentication function in the PPP protocol, which of the following are correct? (Multiple Choice)

Question118: If we configure a VPN instance on the router, if we need to view the VPN route on the Huawei router, which of the following commands should be used?

Question119: When a Layer 3 switch sends an IP packet originating from one VLAN to another LAN, which field in the following options will be written from?

Question120: As shown in the following figure, a part of the LSP of the LSDB of a router is shown in the first line of the figure. First received a new LSP, the second hop in the following picture, which of the following statement is wrong?

Question121: As shown in the figure, three switches SW1, SW2 and SW3, where SW1 is the root bridge, the link between SW1 and SW2 is congested, and SW2 cannot receive the configuration BPDU sent by the root bridge. Which spanning tree protection mechanism does the administrator need to configure to prevent link congestion?

Question122: Which of the following descriptions are true about the establishment process of LDP LSP? (Multiple Choice)

Question123: Which of the following statements about IS-IS (IPv6) are correct? (Multiple questions)

Question124: Four routers R1, R2, R3, and R4 run ISIS, the ISIS router type is marked, and the routing table is viewed on R1. The reason why R1 does not reach the route of 10.34.34.4 is

Question125: Regarding the sliding window of TCP, which of the following descriptions are wrong? (Multiple Choice)

Question126: Which of the following statement about the static LSP configuration in the MPLS network is wrong?

Question127: You are now troubleshooting a LAN, and you are expecting the error to be caused by a mismatch in the working mode. Those switch interface errors indicate that the working mode of the 10/100/1000 IEEE gigabit interface does not match? (Multiple choice)

Question128: According to the configuration shown in the figure below, you can know that R4 has ____ interfaces that are advertised into IS-IS?

Question129: It is necessary to elect a DR between multicast routers running PIM-SM to be responsible for sending and receiving multicast data at the source or member side. Which one of the following descriptions of the DR election rules is correct?

Question130: In inter-domain packet filtering, which of the following options belongs to the outbound direction?

Question131: The two routers are connected through the serial port, but they cannot ping each other. Now check the port status as follows. Can you determine the cause from the above information?

Question132: The second-layer network architecture of a company is as shown in the figure. After the engineer is configured, the services between the departments cannot be communicated. Check the status of the device as follows. Which is the possible reason? (No figure is shown, the MSTP three elements are different, causing the entry to appear on the master port.) (Multiple Choice)

Question133: If an announcement route entry is deleted on a BGP route, it will trigger the BGP router to send a Update message of route revocation, which carries the recognized mandatory attributes of the revoked route entry.

Question134: Regarding Multi-VPN-Instance CE (MCE), which one of the following descriptions is wrong?

Question135: What is the correct statement about the difference between OSPFv2 and OSPFv3? (Multiple Choice)

Question136: Which of the following features does the IS-IS protocol have? (Multiple choice)

Question137: After reset isis all is executed, the IS-IS protocol process needs to be restarted and neighbors need to be re-established, but various IS-IS statistics will not be cleared.

Question138: When BGP EVPN Type2 routing is used to transmit IRB type routing, what does the information carried include? (Multiple choice)

Question139: Both ISIS CSNP packets and OSPF DD packets are in the MA network, describing the role of the link state database profile. Which of the following statements is correct?

Question140: Regarding the way the device handles packets in the MPLS network model, which of the following description is wrong? (Multiple Choice)

Question141: There is an AS-path-filter, ip as-path-filter 1 permit ^100(_100)*(_400)*, which AS-PATH attribute cannot be matched by the As-path-filter?

Question142: When deploying BGP/MPLS IP VPN, when two VPNs have a common site, the common site must not use overlapping address spaces with other sites of the two VPNs.

Question143: A router have received a community attribute of a No-Export of BGP routing, how does the router deal with the BGP routing?

Question144: If the Sticky MAC function of the interface is enabled, what is the number of MAC addresses learned by the interface by default?

Question145: What type of BGP EVPN routes does BGP EVPN advertise MAC address, ARP information, and IRB route announcements?

Question146: Network managers can use CAR technology in traffic monitoring.
Which of the following technologies can be applied in CAR? (Multiple Choice)

Question147: In the packet forwarding of the cross-domain VPN-Option B mode, the two ASBRs will exchange the LSP labels of the public network once.

Question148: Which version of the VRRP protocol is correct? (Multiple questions)

Question149: Which is wrong about the EVPN Type 5 class routing?

Question150: There is the concept of FEC-Forwarding Equivalence Class in MPLS, so on which of the following standards cannot FEC be allocated based?

Question151: Which of the following statements about static VXLAN channel configuration are correct? (Multiple choice)

Question152: As shown in the figure, there are two IPv6 networks that can access the IPv4 network. At the same time, an IPSEC tunnel needs to be established between the two IPv6 networks for communication. Which of the following encapsulation modes can meet the requirements above?

Question153: Regarding the description of IGMP Snooping, which is correct? (Multiple Choice)

Question154: Router R1 and Router R2 run BGP. Both routers are in the AS 65234. The route of router R2 exists in the BGP routing table of router R1, but is not in the IP routing table of router R1. So, what caused the problem?

Question155: The following statements about the VRRP protocol which are correct?

Question156: The following description of the BSR mechanism, which is correct? (Multiple Choice)

Question157: The base AC address of a PC is 548998FB 65D8. The administrator wants this PC to obtain the specified IP address 192.168.11/24 from the DHCP server, so the command configured by the administrator should be ____.

Question158: BGP routing policy can control the distribution and reception of routes.

Question159: What is the command to configure VRRP preemption delay?

Question160: Which of the following is single package attack? (Multiple Choice)

Question161: If there is a Huawei switch running the STP protocol, and now the G0/0/17 interface and G0/0/18 interface of the switch are connected by a cable, which of the following descriptions about this scenario is correct?

Question162: ICMPv6 has two types: Error Messages and Information Messages.

Question163: Regarding the basic forwarding process of MPL S, which of the following statement is wrong?

Question164: The topology map and configuration are as follows. Now I hope that there is no detailed routing entry of 10.6.3.3/32 in the R1 routing table. Which of the following statements can achieve this requirement?
(Multiple Choice)

Question165: There is a new HW office that needs to use their router as a DHCP server.
When configuring the DHCP server to provide DHCP services for the current office, which of the following items need to be configured? (Multiple Choice)

Question166: An MSTP switch treats an RSTP switch as an MSTP domain consisting of a single switch. The MSTP switch resolves the RSTP BPDU to an MST BPDU, where the IRPC is 0.

Question167: Which of the following descriptions about VRRP load sharing is correct? (Multiple Choice)

Question168: Regarding the characteristics of CE dual-homing, which of the following statement is incorrect?

Question169: The OSPFv3 protocol is a separately developed protocol. It differs from OSPFv2 in that OSPFv3 is based on links rather than network segments. Which of the following statement is incorrect?