EMT Practice Test

1. Question Content...

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Question1: In the OSPF routing protocol, the types of LSA involved in the calculation of intra-area routes are only Router LSA, Network LSA and Summary LSA.

Question2: Regarding the special area of OSPF, which of the following description of is incorrect?

Question3: Will setting the community attribute of the route through the routing policy affect the route selection?

Question4: Which of the following statement about the IS-IS protocol is wrong?

Question5: The following is a part of the configuration of a router, which of the following regarding the configuration is true?

Question6: In a broadcast type network, what is the default time interval for DIS to send Hello?

Question7: The RSTP protocol provides a variety of protection functions. For example, when the edge port is configured in the protected state, after the edge port receives the BPDU message, what is the processing method?

Question8: Please match the following VRRP status with the corresponding working mechanism.

Question9: RSTP redefines port roles. Please match RSTP port roles with their roles.

Question10: The shortest path from the multicast source to the receiver becomes the shortest path tree SPT.

Question11: In PIM-DM, which combination of working mechanisms constructs SPT? (Multiple choice)

Question12: The following is a router BGP error output information, which description of this information is wrong?
<HUAWEL>display bgp error Error Type: Peer Error Date/Time:2010-03-2211:40:39 Peer Address:10.1.1.2Error lnfo Router-id conflict

Question13: Option 82 in the DHCP message is called the relay agent information option, from which the administrator can obtain a lot of information about the client. Option 82 can contain at most () Sub-Options.

Question14: In PIM-SM, which of the following description about RP is wrong?

Question15: Regarding the OSPF protocol packets, which of the following statement is false?

Question16: Which of the following SA descriptions of various messages are wrong? (Multiple choice)

Question17: Regarding the description of VRRP load sharing, which one is correct? (Multiple choice)

Question18: For two routers running IS-IS, the adjacency relationship can be established only when the time interval of lH transmission is the same

Question19: By default, the VRRP of Huawei AR routers runs in preemptive mode.

Question20: Regarding RP, which of the following statements is correct? (Multiple choice)

Question21: There are 4 port roles defined in RSTP, among which the part role values in the flags field of the Alternative port and Backup port in the STP packet are always 01.

Question22: What are the routing tools that are not only used for the BGP routing protocol? (Multiple choice)

Question23: Which of the following description of the VRRP master device is wrong?

Question24: The following is about the dual-link hot standby configuration. When configuring the priority of the AC, the greater the priority value, the higher the actual priority of the AC

Question25: Two level-1 routers in different areas can form a neighbor relationship.

Question26: The import-route limit command cannot limit the maximum number of external routes that can be imported in an OSPF process.

Question27: The following is the BGP information output by a router. Which of the following rearding the description of this information is wrong?

Question28: Regarding the description of the VRRP slave device, which of the following is correct? (Multiple choice)

Question29: Which of the following description of the information contained in the OPEN message in the EGP is wrong?

Question30: When the MTU of the interconnection interface of the two routers in the broadcast network does not match, and the interface is configured with ospf mtu-enablet, which of the following description about the status change of the neighbor relationship between the two routers is true?

Question31: In order to avoid inter-area loops, OSPF stipulates that it is not allowed to advertise routing information directly between two non-backbone areas. It is only allowed to advertise routing information within a regional city or between a backbone area and a non-backbone area. Therefore, each district border router (ABR) must be connected to the backbone area

Question32: OSPF can support multiple network types. Which of the following network types need to elect DR and BDR? (Multiple choice)

Question33: Which of the following descriptions about Network-Summary-LSA is correct? (Multiple choice)

Question34: Which of the following scenarios is suitable for SD-WAN solutions?

Question35: As shown is an IP packet header, which of the following statement is true?

Question36: Which of the following statement about OSPF protocol packets is incorrect?

Question37: Modify which of the following parameters, IS-IS neighbor relationship needs to be re-established? (Multiple choice)

Question38: As shown in the figure, four routers in the same LAN are running lS-IS, where R1 is DIS, then R2, R3, R4 establish adjacency relationship with R1 respectively, and no adjacency relationship is established between R2, R3, and R4.

Question39: What functions can Huawei iMaster NCE products achieve? (Multiple choice)

Question40: The BGP Speaker only advertises the changed routes to neighbors.

Question41: When running OSPFv3 on a Huawei router, the OSPFv3 process will automatically select an interface address as the router ID of the process.

Question42: Regarding the description of IBGP neighbors and EBGP neighbors, which of the following is false?

Question43: The output information of a router below, which of the following regarding the description of this information is true?

Question44: The output information of a router is as follows, please match the information on the left with the information on the right.
Router ID of this device: ()
Router ID of the peer device: ()
The interface IP address of this device: ()
City ID to which this device belongs: ()

Question45: a router running IS-IS, the following picture shows the router sends Hello message, which of the following statements is correct? (Multiple choice)

Question46: Which of the following description about verifying whether a received Hello message is legal is wrong?

Question47: Which of the following statements about the concept of multicast is wrong?

Question48: There are the following states in the process of BGP neighbor establishment. Then the sequence of the state machine to establish a successful connection is:
1. Active
2. OpenConfirm
3. Idle
4. Establish
5. OpenSent

Question49: As shown in the figure, the data traffic before roaming is forwarding as the STA-HAP- upper network, and the forwarding method is direct forwarding, and the home agent is configured on the AP. After three-layer roaming, what is the direction of data forwarding traffic?

Question50: A socket is composed of a 5-tuple, so which of the following options does not belong to the scope of the 5-tuple?

Question51: What are the conditions for matching firewall security policies? (Multiple choice)

Question52: Which of the following descriptions of Link ID, Data, Type and Metroc in Router-L SA are correct? (Multiple choice)

Question53: The command to configure VRRP to track the state of the physical interface is.

Question54: The network is as shown in the figure, and SWA, SWB, SWC, and SWD run RSTP, then which of the following statement is correct? (Multiple choice)

Question55: When the configuration BGP time, if such a warning is generated: "BGPI6ESTABLISHED: the OID [OID] of The BGP The Establishedstate Enters the FSM, which of the following description is correct?

Question56: When configuring dual-link hot backup, the engineer configured the CAPWAP heartbeat detection interval to be 20 seconds, and the dual-link backup function is enabled, then how long does the AP detect the timeout of the main link and perform the main-standby switchover?

Question57: When two routers establish a pair of logical BGP peers through a multi-hop physical link, the peer connect-interface command must be used.

Question58: Which of the following description of the Hello message in PIM-SM is wrong?

Question59: The state inspection firewall uses the session table to track the active TCP sessions and UDP sessions, and the firewall security policy determines which sessions are established, and the data packets will only be forwarded when they are associated with the session.

Question60: OSPF can support multiple network types. Which of the following network types need to elect DR and BDR? (Multiple choice)

Question61: Which of the following attacks is not a network layer attack?

Question62: What is the sequence of the VLAN Pool assigning VLANs to the terminal? (Multiple choice)

Question63: As shown in the figure, in a pure IPv6 environment, if you want to realize the communication between PC1 and PC2, which of the following addresses can be configured on PC1 and P2 respectively?

Question64: Which of the following routing protocols support the release of default routes through command configuration? (Multiple choice)

Question65: Routes injected into BGP by re-issuing the command, the Origin attribute of which is Incomplete

Question66: What parameters can the DHCPv6 server assign to the DHCPv6 client? (Multiple choice)

Question67: Which routes in the following options meet the following ACL conditions? (Multiple choice)

Question68: Which version of IGMP is needed in SSM?

Question69: Regarding BGP recognized arbitrary attributes, which of the following descriptions are correct? (Multiple choice)

Question70: RSTP provides different protection functions in different scenarios. Which of the following is wrong?

Question71: Regarding the description of OSPF neighbor relationship and adjacency relationship, which of the following statement is true?

Question72: There are a large number of employees in an 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 ensure that the IP address of each terminal is fixed as much as possible, what is the recommended approach?

Question73: Regarding the accompanying business, which of the following statements is correct? (Multiple choice)

Question74: In the IS-IS broadcast network, which multicast MAC address does the Level-2 router use as the destination address for sending lH?

Question75: The following description of the BGP UPDATE message, which is wrong?

Question76: For the link state routing protocol, when filter-policy import is used, the filtered link state information cannot be calculated as a route, and its neighbors cannot receive complete link state information.

Question77: Regarding the description of the security level of the firewall security zone, which of the following is false?

Question78: 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?

Question79: About the description of the Keepalive message of BGP, which of the following is incorrect?

Question80: The first 4 bits of the IP multicast address are fixed 1110, corresponding to the high 25 bits of the multicast MAC address. Among the last 28 bits of the IP multicast address, only 23it is mapped to the MAC address, so 5 bits of address information are lost. The direct result is that 32 IP multicast addresses are mapped to the same MAC address.

Question81: Regarding BGP reliable routing updates, which of the following description of is ture?

Question82: What are the key components of building an IP wide area bearer network solution with Huawei NetEngine smart router?

Question83: When configuring dual-link hot backup, the engineer configured the CAPWAP heartbeat detection interval to be 20 seconds, and the dual-link backup function is enabled, then what is the time for the AP detecting that the active link times out to perform the active/standby switchover?

Question84: Which statement about IGMP Proxy is correct? (Multiple choice)

Question85: Regarding BGP MED, which of the following descriptions are correct? (Multiple choice)

Question86: After dividing an interface of the firewall into the Untrust security zone, the interface belongs to the Untrust zone and no longer belongs to the Local zone

Question87: The output information of a router is as follows, please match the information on the left with the information on the right.

Question88: Which TLV does IS-IS use to describe the IP Interface Address?

Question89: When the Hold time supported by two BGP neighbors is inconsistent, the neighbors will negotiate to adopt the lowest Hold time interval that both ends can support.

Question90: Which of the following LSAs only spread in a single area? (Multiple choice)

Question91: As shown in the figure, SWA, SWB, and SWC all run RSTP. What are the port roles of the GEO/O/2 port on SWB and the GEO/D/1 port on SWC?

Question92: The following is part of the configuration information of the router Huawei. Which description is wrong about the configuration information?
[HUAWEI] ip as-path-filter 2 permit_200_300
[HUAWEI]route-policy test permit node 10
[HUAWE]-route-policy] if-match as-path-filter 2

Question93: Which description of Route Policy is correct? (Multiple choice)

Question94: Which of the following description of roaming is correct? (Multiple choice)

Question95: Which statement is wrong about the VRRP timer? (Multiple choice)

Question96: Which of the following description about the way of BFD session establish is wrong?

Question97: 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)

Question98: A certain network runs IS-IS. The L SP information of a router R4 in the network is shown in the figure. Which of the following statements is correct? (Multiple choice)

Question99: The four routers are running IS-IS and have established adjacency relationship. The area number and router level are marked as shown in the figure. R1 and R2 are PPP links, R2 is DIS. Which of the following statement is correct? (Multiple choice)

Question100: RSTP converges faster than STP. Why? (Multiple choice)

Question101: There are many employees in an enterprise building, and they usually start to access the company's WLAN network in the lobby when they go to work. As each employee walks to their respective workstations, everyone's mobile terminal also roams to their respective network coverage areas by roaming.
In order to ensure that the IP address of each terminal is fixed as much as possible, what is the recommended approach?

Question102: About OSPF 's ASBR Summary-LSA information description, which of the following is wrong?

Question103: Which of the following descriptions of the LSA age field is correct? (Multiple choice)

Question104: Which of the following description of BGP characteristics is wrong?

Question105: About the description of IGMP Snooping working mechanism, which of the following statement is true?

Question106: Both policy routing and routing strategy can affect the forwarding process of data packets, but they affect the data packets in different ways. Policy routing is based on policy forwarding, based on the forwarding plane. The routing strategy is based on the control plane, serving routing protocols and routing tables.

Question107: Regarding BGP MED, which of the following descriptions are correct? (Multiple choice)