EMT Practice Test

1. Question Content...

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Question1: As shown in the figure, SF is enabled on all interfaces of the router, the cost value of the link is marked in the figure, and the Loopback0 interface of R2 is advertised in area 1, then the cost value of R1 reaching 10.0.2.2/32 is?

Question2: The RR rules for advertising routes violate the IBGP split horizon rules, which may cause loops in the AS. Which routing attributes does RR use to prevent loops?

Question3: What is the command to adjust the link cost of an IS-IS interface?

Question4: The routing policy tools that can be used by BGP mainly include Filter-policy and Route-policy. Fiter-policy can only filter routes, and Route-policy can only modify routes.

Question5: Regarding the description of the encapsulation format of labels in MPLS, the correct one is

Question6: The routing policy tools that can be used by BGP mainly include Filterpolicy and oRoute-policy.
Fiterpolicy can only filter routes, Rote - policy can only modify routes

Question7: When configuring the DHCP Relay function on the device, the VLAN ANIF interface of the relay connection client must be bound with a DHCP server group, and the IP address of the proxy DHCP server must be configured in the bound DHCP server group.

Question8: What is wrong with this configuration description is:

[Huawei]dhcp enable
[Huaweijinte GigabitEthernet 0/0/1 [Huawei-GigabitEthernet0/0/1 ]dhcp option82 insert en [Huawei-GigabitEthernet0/0/1 ]dhcp snooping enable [Huawei-GigabitEthernet0/0/1]dhcp snooping trusted

Question9: To speed up the detection of link failures in an IS-IS network, you can associate IS-IS with BFD.

Question10: An engineer uses two routers to test IPv6 services, and simulates the headquarters and branches by running BGP4+ of interconnection. As shown in the figure, an engineer captures packets to view the update packets sent by R1. About this message Description of information, which of the following statements is correct

Question11: As shown in the figure, there is a packet containing a three-layer label header. Please select the values (decimal) corresponding to the x, and Z fields in the figure.

Question12: Link LSAs of OSPFv3 are propagated throughout the area.

Question13: Configured on an interface: isis timer hello 5 level-2, which of the following statements is correct?

Question14: IEIF expands the functions of OSPF by taking advantage of the strong expansibility of OSPF. To enable it to support IPv6 networks, the expanded protocol is called OSPFv3. OSPFv3 is compatible with OSPFv2.

Question15: Configuring DHCP Snooping can be used to prevent imitator attacks, so the configuration process needs to include the following What are the steps?

Question16: As shown in the figure, an engineer uses 4 routers to test branch network interoperability. Among them, R1, R2, and R3 in branch 1 deploy OSPF to implement network interoperability. R2, R3, and R4 in branch 2 deploy IS-S to implement network interoperability. Now the engineer wants to implement R1 to access the loopback interface address of R4. Which of the following operations can meet this requirement?

Question17: According to this picture, Xinmen can be judged?

Question18: The router ID of OSPF V3 needs to be configured in dotted decimal with a length of 128 bits.

Question19: The OSPF protocol is run between CE and PE, when CE1 advertises the route of its site to CE2. Which of the following descriptions is incorrect?

Question20: SFFv2 is an IGP running on an IPv4 network: 0SPFV3 is an IGP running on an IPv6 network. Compared with 0SPFV2, SPFV3 has a similar LSA type, but has slightly different functions. Which of the following is not included in the LSA type of 0SPFV3?

Question21: Which of the following statements is false when troubleshooting the dual-active failure of a VRRP backup group?

Question22: Which of the following statements about MPLS header TTL is correct?

Question23: Deployment in a small and medium-sized networkOSPF,When viewing the routing table of a device, it is found that there are only directly connected routes.
It is not possible for the operation to cause the fault?

Question24: Which of the following regular expressions can match only BGP routes that pass through AS200 and then through AS300 eyes?

Question25: 0SPFV2 is an IGP running on an IPv4 network; 0SPFvV3 is an ICPO running on an IPv6 network the packet types of OSPFV3 and OSPFV2 are the same, including .Hall. message, DD message, LSU message, LSU packets and SAck packets. Which of the following statements is correct about 0SPFV3 packets?

Question26: The default MPLS label publishing mode, label distribution control mode and label retention mode of Huawei routers are respectively

Question27: The correct description for the configuration on this switch is:
[Huawei]dhcp enable
[Huawei]interface Vlanif 100 [Huawei-Vlanif 100]dhcp select relay

Question28: Regarding multi-instance CE (Mlulti-VPN-Instance CE, MCE), which of the following descriptions is wrong?

Question29: In BGP/MPLS IP VPN, the 0SPF multi-instance process uses the DN bit to prevent Type5 LSA loops.

Question30: What fields are added in Update in order to advertise IPv6 routes in BGP4+.

Question31: As shown in the figure, on the R1 router, network administrator A sends the routing entry to R2 through the routing policy After modifying the MED value, you can control the path of traffic entering the AS100

Question32: Please match 0SPFv3LSA with its transmission range.

Question33: IGP converges faster than BGP, which may cause network traffic loss. By enabling the OSPF and BGP linkage feature of the device, the device can keep the OSPF and BGP linkage during the set linkage time.____The router makes the link metric value in the LSA advertised to be the maximum value, so as to inform other OSPF devices not to use this router to forward data, so as to avoid traffic loss. (Note: If English letters are involved, all uppercase)

Question34: As shown below:

Question35: Regarding BGP/MPLS IPVPN data forwarding, which of the following descriptions is wrong?

Question36: Which of the following statements is true about the role of ping and tracert?

Question37: What is the purpose of configuring LSP fragmentation on an IS-IS device?

Question38: Qing technology is a technology to expand VLAN space. It can achieve the function of expanding Vian space by adding a layer of 8D2.1Q Tag on the basis of 8Q2.12 tag message. Which of the following statements about qinq is false?

Question39: Regarding the sham link, which of the following descriptions is wrong?

Question40: You have set IS-IS IPv6 enable under the interface, what is the meaning of this command?

Question41: As shown in the figure, 0SPF is enabled on all interfaces of the router. The cost value of the link is marked in the figure, R2's LoogbackO is advertised by mouth in area 0, then in In area 1, both R2 and R3 transmit the routing information of 10.0.2.2/32 in the form of Typae3 LSA.

Question42: Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEs interest

Question43: When 0SPFV2 evolves to 0SPFV3, the LSA format and function are exactly the same, but the network layer in the LSA address from IPv4 to IPv6o

Question44: After a fault occurs, you need to collect and back up various types of fault information in time as a reference for troubleshooting. In addition, when seeking emergency assistance from Huawei Technologies Co., Ltd.

Question45: If you want to check the files under Flash, which command should you use?

Question46: As shown in the figure, on the R1 router, the network administrator can control the path of the traffic entering AS100 after modifying the value of the routing entry sent to R2 through the routing policy.

Question47: According to this picture, the door can be judged?

Question48: In an MPLS domain, LSR can be divided into Ingress LSR, Transit LSR and Egress LSR according to the different processing methods of LSRs for dat a. For the same FEC. a certain LSR can be the Ingress LSR of the FEC or the Transit LSR of the FEC. LSRO

Question49: What characteristics must a high-risk operation plan have?

Question50: Can Huawei equipment perform traffic suppression for Mingbi packets?

Question51: Which of the following options is incorrect:

Question52: From the user's point of view, any phenomenon that affects the business can be defined as a fault.

Question53: What is the LSA whose flooding range is the entire autonomous system in SPFV3?

Question54: Which of the following reasons may cause the hosts in the same VLAN of the LAN to fail to communicate with each other?

Question55: Which statement about DHCP Snooping is wrong?

Question56: Which of the following operations is not part of the middle stage of dissection?

Question57: As shown in the figure, all interfaces of the router enable DSPF. The cost value of the link is marked in the figure. R2 The LoopbackD interface is advertised in area 1, then the cost of R1 reaching 10.2/32 is?

Question58: If the BFD session goes down, the direct link will fail.

Question59: In BGP4+, what is the content of the next hop network address field carried in the P_REA, CHLRI attribute in the Update packet?

Question60: Which of the following statements about MUX VLANs are true?

Question61: What is the meaning of display current-configuration I include vlan command?

Question62: BFDLink state detection at the heart (millisecond) level can be achieved.

Question63: The rules of RR advertising routes violate the rules of IBGP split horizon, so it may cause loops in the AS road. Which routing attributes does RR use to prevent loops?

Question64: A company purchased private lines from two operators. In order to optimize the lines, the company used the 6GP protocol to learn from two Route entries that operate off. However, after the enterprise found that this configuration, the traffic of the port route increased greatly, and the network engineering arrangement After investigation, it was found that the traffic of the two operators was passed to each other through the enterprise egress router. Therefore, the enterprise intends to use the routing strategy so that the traffic of the packets of different carriers is no longer passed to each other. Is the configuration in the following figure correct?

Question65: To prevent hackers from attacking user devices or networks through MA, C addresses, you can configure the MA, C addresses of untrusted users as black hole MA, C addresses to filter out illegal MA, C addresses.

Question66: In OSPFv3, an LSA whose propagation range is one area has_____kind. (Fill in Arabic numerals only)

Question67: Which of the following are static information coke analysis?

Question68: When there are multiple redundant links in the IS-S network, multiple equal-cost routes may appear. Which of the following statements is false about equal-cost routing within an IS-IS network?

Question69: An engineer uses two routers to test IPv6 services, and runs 0SPFv3 to implement IPv6 network interconnection.
R1 is required to be able to access the loopback interface address of R2.
The engineer checked the OSPFv3 routing table entry of R1, as shown in the figure, and found that there was no route to the loopback interface address of R2. Which of the following reasons could not be the cause?

Question70: As shown in the figure, OSPF is enabled on all interfaces of the router, and the ip address identified in the figure is the device's IP address.
Loopback0 presses the IP address of the port, RI, R2, R3EJLoopbacD is advertised in the area 1, R4 LoopbacfkD advertises in area D and which of the following functional addresses can be pinged between the LoopbackD announcements of R5 and R5 in area 2?

Areal
10.0.1.1/32

Question71: As shown in the figure, OSPF is enabled on all interfaces of the router, in which R4 and R5 can establish OSPF virtual connections.

Question72: In the VLAN aggregation technology, multiple Sub-VLANs are used to isolate wide-open domains, and these Sub-VLANs are aggregated.
Synthesizing a logical Super-VLAN, a company divides different departments into different Sub-VLANs, because Sub-VL AN not only includes physical connection, but also can establish three-layer VLAN ANIF interface, which can directly carry out three-layer communication with external network.

Question73: The cutover risk assessment mainly considers which of the following aspects?

Question74: OSPFV2 is an IGP running on an IPv4 network; OSPFV3 is an IGPo running on an IPv6 network. The basic working mechanism of OSPFv3 is the same as that of OSPFV2, such as the election of DR and B, DR. As shown in the figure, an engineer uses 3 routers to test IPv6 services. He wants to realize the interconnection of IPv6 networks by running OSPFV3.
Pass. Which of the following statements about the election of the network DR is correct?

Question75: The IS-IS Level-1 neighbor relationship between R3 and R4 is not established. According to the information in this figure_What is the possible reason?

Question76: What is the default aging time of the MA, C address table of Huawei switches?

Question77: About the site in the BGPIMPLS IP VPN network architecture. Which of the following descriptions is correct?

Question78: For the same MA, C address, manually configured MA, C entries have higher priority than automatically generated entries.

Question79: Which of the following is not a hardware preparation for cutover?

Question80: As shown in the figure, in a medium-sized network, BGP generally deploys dual RRs to improve R reliability. When deploying dual RRs, the ClusterIDs of the two RRs are generally set to be the same. What is the reason for this?

Question81: According to this diagram, can we break the

Question82: In the multi-level RR scenario, a large number of secondary RRs will be connected to the primary RR, which may lead to BGP of the primary RR. The routing table overflows, what method can be used to reduce the risk of overflowing the routing table of the advanced RR BGP?

Question83: In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes,R1which type ofLAS?

Question84: As shown in the figure, on the R1 router, network administrator A sends the routing entry to R2 through the routing policy After modifying the Local Preference value, you can control the path of traffic leaving the AS100

Question85: In an operator's MPLSVPN network, there are two devices PE1 and PE2 for MPLSVPN data forwarding. PE1 receives a private network route of 172.16.1.0/24 from the client, and converts it to a VPNv4 route on PE1 and assigns a label of 1027 Released to PE2. The outgoing label of the MPLS LSR-ID of PE2 reaching PE1 is 1025o When a client on PE2 accesses 172.16.1.0/24, the frame sent by PE2, the inner and outer labels should be a combination of the following 6 options?

Question86: Regarding BGP/MPLS IPVPN routing interaction, which of the following descriptions is wrong?

Question87: 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.