EMT Practice Test

1. Question Content...

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Question1: The route injected into the BGP through the redistributed command has the Origin attribute of Incomplete.

Question2: Which of the following description of BGP is wrong? (Multiple Choice)

Question3: When the Hold Time parameter negotiated by the two BGP neighbors is 0, no Keeplive packet is sent.

Question4: Which of the following BGP attributes are recognized as mandatory type attributes? (Multiple choice)

Question5: In a network running STP, multiple topology change informations are sent when the network topology changes. How many kinds of topology change informations are defined in the RSTP network?

Question6: The following is a partial output configuration of the Huawei router. The correct description about the configuration of this part is:

Question7: Which of the following LSA messages carries master-slave relationship information?

Question8: In the BGP routing rules, which is the priority judgment principle of the Origin attribute?

Question9: Among BGP's commonly used routing policy tools, which of the following can be used to add or delete AS paths?

Question10: Which of the following description about the Hello message in the PIM protocol is wrong?

Question11: Link Aggregation is a method of bundling a set of physical interfaces together as a logical interface to increase bandwidth. There are two types of link aggregation control protocols: manual load balancing and static LACP mode.

Question12: Under the VRP platform, the description of the default priorities for each protocol, which is correct?

Question13: What are the commands that can check OSPF neighbors on the VRP platform?

Question14: Regarding OSPF multi-process, which is wrong?

Question15: Which of the following description of BGP features is wrong?

Question16: What kinds of special areas does OSPF define? (Multiple Choice)

Question17: Which of the following causes the BGP neighbor relationship failed to be established?

Question18: By default, the OSPF port cost is related to the bandwidth of the port. The calculation formula is bandwidth-reference/bandwith. The port cost can only be calculated by OSPF and cannot be changed manually.

Question19: When the ospf cost and bandwidth-reference commands are configured at the same time, the cost value on the interface is subject to the bandwidth reference configuration.

Question20: By default, when the route-policy of a BGP neighbor is changed, VRP requires manual operation to re-send an Update message to the neighbor.

Question21: Which description is correct about the IGMP Snooping mechanism?

Question22: The inter-area route summarization function is configured in which router?

Question23: Which of the following multicast protocol can generate a multicast distribution tree?

Question24: In OSPF protocol, which of the following statements is wrong?

Question25: Which of the following descriptions are true about the OSPF protocol? (Multiple Choice)

Question26: IGMP stipulates that when there are multiple routers in shared network, the IGMP protocol itself elects the querier.

Question27: In the MSTP protocol, each MST Instance uses the RSTP algorithm alone to calculate a separate spanning tree.

Question28: A switch runs MSTP. The relevant configuration information is shown in the figure. According to the configuration of the command, it indicates that for Instance 1, the role of the switch is:

Question29: Which of the following is true about BGP, OSPF, ISIS and RIP?

Question30: Which of the following description about OSPF is correct?

Question31: Which of the following description of AS_PATH is wrong?

Question32: An Access Control List (ACL) can be used to match routing information or the address of a packet. It can only distinguish between certain types of packets and cannot filter packets.

Question33: When OSPF is running on a broadcast network, DR and BDR need to be elected.
Then in which of the following states will DR and BDR be elected?

Question34: To avoid loops between areas, OSPF stipulates that routing information cannot be directly advertised between two non-backbone areas. Routing information can only be advertised within a single area or between backbone areas and non-backbone areas. Therefore, each area border router (ABR) must connect to the backbone area.

Question35: Which multicast MAC address is used by the Level-1 router as the destination address for sending the IIH in the IS-IS broadcast network?

Question36: Link Aggregation is a way to bundle a set of physical interfaces together as a logical interface to increase bandwidth.
There are two types of link aggregation control protocols: manual load balancing mode and static LACP mode.

Question37: How to maintain a network segment group membership of IGMPv2 router? (Multiple Choice)

Question38: When configuring BGP, this type of alarm is generated: BGP/2/BACKWARD: OID [oid] The BGP FSM moves from a higher numbered state to a lower numbered state. As the following reasons for generating such an alarm, which is incorrect?

Question39: Which of the following routing protocols support the release of default routes through command configuration? (Multiple Choice)

Question40: In the format of configuring BPDU packets, in addition to ensuring that the STP format is basically the same, RSTP made some minor changes. The following description which is correct?

Question41: The state of the BGP neighbor establishment process exists as follows. The sequence of state machines experienced by establishing a successful connection is:

Question42: Which of the following commands can be used to leak level-2 area routes to the level-1 area?

Question43: Which descriptions are correct about the Next Hop attribute of BGP? (Multiple Choice)

Question44: Which of the following description of the rules of route filtering is wrong?

Question45: In the NBMA network, the unicast packets are? (Multiple choice)

Question46: Which of the following description about the optional attributes in BGP is correct? (Multiple choice)

Question47: Which of the following tools is used to filter routing information and set routing properties for filtered routing information?

Question48: About the description of IGMP Snooping, which of the following is correct? (Multiple choice)

Question49: After the RPT tree is established, which description about the SPT switch is incorrect?

Question50: In the static LACP mode, the correct description of the active link selection is: (Multiple Choice)

Question51: Which multicast MAC address is used by the Level-2 router as the destination address for sending the IIH in the IS-IS broadcast network?

Question52: Which description about the BGP route advertisement principle is correct? (Multiple Choice)

Question53: The community attribute of the route set through routing policy, does it affect route routing?

Question54: What kind of BGP routes will send BGP neighbors without enabling BGP path load balancing?

Question55: <Quidway>display current-configuration
#
multicast routing- enble
# interface Ethernet6/1/0
ip address 10.1.1.1 255.255.255.0
igmp timer query 40
#
igmp
#
return
The above information is a partial multicast configuration intercepted from a router. After the igmp enable command is configured on interface Ethernet6/1/0, the igmp transmission interval is () seconds after the querier is started.

Question56: Define the route-policy Set-cost as follows, which of the following description is correct?

Question57: The AS-Path attribute records all the AS numbers that a route passes through from the local to the destination address in vector order. Therefore, the neighboring AS numbers farthest from the local AS are listed in the front, and the other AS numbers are arranged in order.

Question58: Which of the following descriptions are correct about BGP Local-Preference? (Multiple Choice)

Question59: In order to provide different services to different users or services, users or services can be finely divided according to the information of the packets (such as packet priority, source IP, destination IP, port number, etc.) so for the alleged partitioning function, the QoS technology we usually use is:

Question60: Which of the following routes meet the following ACL conditions? (Multiple choices)

Question61: Which of the following description about OSPF default route is wrong?

Question62: About the description of MUX VLAN, which is wrong?

Question63: By default, VRP automatically aggregates the routes imported by BGP.

Question64: For IPv4, according to the address space of the SSM range allocated by IANA, which of the following addresses are legal?

Question65: In a company network environment, there are two switches SWA and SWB. The link aggregation LACP mode is adopted between the SWA and the SWB. There are three links added to the link aggregation, and the maximum number of active links is set to two. The system priority of the SWA is 4096. The system priority of the SWB is 32768. The interfaces of the three SWA links are G0/0/1, G0/0/2, and G0/0/3. The priority of the interface is 10, 20, 30. The interfaces of the three SWB links are G0/0/1, G0/0/2, and G0/0/3. The priority of the interface is 30, 20, and 10 respectively.
Which of the following conclusions are correct? (Multiple choice)

Question66: When multiple routing tools are configured for a BGP neighbor for route filtering, which of the following description is wrong? (Multiple choice)

Question67: In the network shown in the figure, three switches run RSTP. The configuration is as shown in the figure.

According to the configuration in the figure, determine the root switch as:

Question68: The following is a partial output message of the router RTB. Which description of the output information is wrong?

Question69: As shown in the figure, an OSPF multi-process is configured on the RT1 router, wherein process 100 of RT1 establishes an OSPF neighbor through the backbone area with RT2, and process 200 establishes an OSPF neighbor through the backbone area with RT3.

Please select the wrong options:

Question70: The following description of EGP and IGP, which is wrong?

Question71: Run MSTP on the network. When you view the configuration on the root switch of an MSTP domain, the following command is obtained. As shown in the figure, please estimate the network size of the MSTP domain where the root switch resides.
[SWA]display stp
------- [CIST Global Info] [Mode MSTP] ------
CIST Bridge: 0.000f-e212-f8e1
Bridge Times: Hello 2s MaxAge 20s FWDly 15s MaxHop 30
CIST Root/ERPC: 0.000f-e212-f8e1/0
CIST RegRoot/IRPC: 0.000f-e212-f8e1/0
CIST RootPortId: 0.0
BPDU-Protection: disabled
CIST Root Type: PRIMARY root
TC or TCN received :3
Time since last TC: 0 days 1h:23m:36s

Question72: In a network environment, there are both switches that run RSTP and run STP. What is the phenomenon that the network will appear? (Multiple choice)

Question73: The BGP Local_Pref attribute is an optional transition attribute.

Question74: About the description of BGP loop protection, which is correct? (Multiple Choice)

Question75: Which of the following description of MED is incorrect? (Multiple Choice)

Question76: Policy routing requires manual hop-by-hop configuration, to ensure that packets are forwarded by policy.

Question77: Which the following description about Network-Summary-LSA is correct?

Question78: Which of the description of BGP packet types and packet characteristics is incorrect?

Question79: About multicast routing, which are correct? (Multiple choices)

Question80: Different network types of the OSPF protocol can form adjacencies in the FULL state.

Question81: BGP is an inter-domain routing protocol. Which of the following description about the protocol is correct? (Multiple choice)

Question82: Under the VRP platform, which of the following description about the default priorities for each protocol is correct?

Question83: Which description about BGP state machine is wrong?

Question84: Which description about the characteristics of the routing policy is correct?

Question85: Regarding the description of BGP neighbors, the errors are: (Multiple Choice)

Question86: The following statement about OSPF neighbor information:

Question87: In the format of configuring BPDU packets, in addition to ensuring that the STF format is basically the same, RSTP made some minor changes. Which description is correct? (Multiple Choice).

Question88: IS-IS routers with an interface priority of 0 can't participate in DIS election.

Question89: Compared with the OSPF protocol, which are the features of IS-IS protocol? (Multiple choices)

Question90: When the BGP Notification packet Error Code is 2, it indicates that the OPEN message is incorrect. Which of the following error codes is included?

Question91: After the BGP connection is established, in the case where load sharing is not configured, the BGP speaker advertises only one of the best routes in the BGP routing table to the neighbor.

Question92: Which of the following description about the routing policy supported by OSPF route filtering is wrong?

Question93: The hello time of the BGP neighbor PeerA in the Open is 90s, and the Hold time of the PeerB in the Open is 30s. The interval for sending the keepalive message after the PeerA and PeerB are successfully connected is:

Question94: RSTP convergence speed is faster than STP. Which of the following statements are correct? (Multiple Choice)

Question95: Both policy routing and routing policies can affect the forwarding process of data packets, but they affect the packets differently. Policy routing is based on policy-based forwarding. Find the routing table forwarding after failure. Based on the forwarding plane, it serves the forwarding policy and needs to be manually configured. The routing policy is based on the destination address and is forwarded according to the routing table. Based on the control plane, it serves the routing protocol and the routing table, and combines with the routing protocol to complete the policy.

Question96: In different scenarios, RSTP provides different protection functions, which is wrong? (Multiple choice)

Question97: MSTP has different port roles. Which of the following statements are correct? (Multiple choice)

Question98: Which types of metrics are supported by IS-IS protocol?

Question99: When multiple routing tools are configured for route filtering for a BGP neighbor, which of the following description is wrong? (Multiple choice)

Question100: About the basic concepts of link aggregation, the following description which is wrong?

Question101: Port isolation enables the isolation of communication between different ports within the same VLAN of the same switch.

Question102: IGMPv1 contains only two message types: membership query and membership report.

Question103: Which BGP attribute will not be advertised to the neighbor with the BGP update message?

Question104: The description of the LSA header information in the AS-External-LSA of OSPF, which is wrong?

Question105: About the OSPF command description, which on is incorrect? (Multiple choice)

Question106: Which of the following description of OSPF features is correct?

Question107: Thedescription about OSPF features, which is wrong?

Question108: The BGP protocol has a type of message periodically sent between BGP neighbors to maintain the connection relationship. What is the message?

Question109: Which of the following command is used to check Type 2 LAS detailed information?

Question110: The description of the network command description in BGP, which is wrong?

Question111: On the device running MSTP obtain the information as shown in the figure. Note that the status of the port on Ethernet 1/0/13 in Instance 1 is:

Question112: For link-state routing protocols, in the direction of routing, filtering can actually block the link-state information transmission, the effect of filtering is routing cannot be added to the local routing table, and its neighbors also cannot receive the complete routing state information.

Question113: BGP recognized community attributes are: (Multiple Choice)

Question114: The following description about OSPF packet authentication, which is wrong?

Question115: RSTP has been improved on the basis of STP and realized fast convergence of the network topology. However, both RSTP and STP are based on a single spanning tree, and there are some defects, such as: (Multiple choice)

Question116: The BGP protocol has a message that is periodically sent between BGP neighbors to maintain the connection relationship. This message is:

Question117: Regarding the BGP AS number, which of the following descriptions are wrong? (Multiple Choice)

Question118: Which types of access control lists can be divided into? (Multiple Choice)

Question119: Which of the following configurations must be included in order for the non-aligned EBGP neighbours to be built properly?

Question120: Which of the following description about BGP, OSPF, ISIS, RIP is correct?

Question121: On the VRP platform, when we import OSPF or ISIS routes to RIP, if you do not specify a COST, the cost value is set to 16 by default.

Question122: Multicast related protocols do not include:

Question123: Which of the following description about the OSPF protocol is wrong?

Question124: By default, the VRRP of the Huawei AR router runs in preemptive mode.

Question125: In the OSPF routing protocol, under the same conditions, the second type of external route is always preferred over the first type of external route.

Question126: The address prefix list uses the source address, the destination address and the next hop address prefix as filters for matching conditions and can only be used when the routing protocol receives the route.

Question127: In the MSTP protocol, each MST Instance uses the RSTP algorithm alone to calculate a separate spanning tree.
Which of the following description is true about the OSPF neighbor relationship and adjacency relationship?

Question128: In OSPF, the LSDB overload is usually caused by too many AS external road information (the fifth type of LSA).

Question129: Which of the following descriptions are incorrect regarding the BGP AS number range? (Multiple choices)

Question130: In the same LAN, if some IGMPv1 routers exist in the LAN, IGMPv1 must be forcibly configured for all routers in the subnet to use normally.

Question131: About this section configuration, which of the following descriptions are correct? (Multiple choice)

Question132: In BGP routing rules, routes with high MED values take precedence.

Question133: Which of the following descriptions is wrong in the process of building a connection between BGP neighbors? (Multiple choices)

Question134: Compared with STP, the RSTP protocol defines different port roles. which description about the standby port and backup port in RSTP are correct? (Multiple Choice).

Question135: Different port roles are defined in the RSTP protocol, the role of the port that cannot be in the forwarding state is: (Multiple Choice)

Question136: Which description about the permanent multicast address is wrong?

Question137: Router ID must be published in OSP

Question138: Which of the following conditions can cause multicast traffic to fail to reach the user? (Multiple Choice)

Question139: Which of the following are the type of secure MAC address in port security technology? (Multiple Choice)

Question140: Link Aggregation is a method of binding a group of physical interfaces together as a logical interface to increase the bandwidth. Link aggregation control protocols fall into the following two types: manual load sharing and static LACP.

Question141: The peer command can be used to specify neighbors on the OSPF NBMA network.

Question142: By default, the BGP speaker must set up an IBGP connection with other BGP peers so that IBGP peers can successfully advertise the routing information. In this manner, IBGP peers are interconnected throughout the AS.

Question143: Which of the following description of the distribution tree is correct?

Question144: The following is a partial configuration command of the Huawei router. Which description of this configuration is incorrect?

Question145: About MUX VLAN, which is correct?

Question146: What are the advantages of IS-IS compared to OSPF? (Multiple Choice)

Question147: Regarding the description of the working mechanism of IGMP Snooping, which is correct?

Question148: Which services and functions can the ACL be applied to in the AR3200? (Multiple choice)

Question149: When a BGP speaker advertises a route learned from an EBGP peer to a GP peer, what is the next attribute set to?

Question150: Which of the following commands can enable the IS-IS protocol on an interface?

Question151: There are 8 fault-free links in an Eth-Trunk, each link can provide 1G broadband, and now requires a maximum of 5G broadband, then the upper limit value can be set to 5 or greater. Other links automatically enter the backup state to improve network reliability.

Question152: Which of the following description about configuration commands for issuing default routes for each protocol is wrong?

Question153: IS-IS cannot be run on P2MP ( Point to MultiPoint ) .

Question154: Which of the following description about Local-Preference and MED are correct? (Multiple Choice)

Question155: The following description of the optional attributes in BGP is correct: (Multiple Choice)

Question156: The routing tool route-policy can filter and set BGP attributes based on pre-defined conditions, so it is often used to define policies for BGP peers, and is often used during route generation. By default all unmatched routes are rejected to go through route-policy.

Question157: A route-policy may have multiple nodes. Different node numbers are identified by sec-number. The relationship between the various parts of different seq-numbers is "OR".

Question158: Which of the following commands can used to view the Type 2 LSA details?

Question159: Which of the following options belong to the OSPF packet type? (Multiple Choice)

Question160: The following describes the information contained in the OPEN packet in BGP. Which of the following is wrong?

Question161: The ABRs in an OSPF stub area do not flood Type 5 LSAs, Type 4 LSAs, and Type 3 LSAs into the Stub area. Therefore, the Stub area does not have AS external routing capabilities. The ABR in the Stub area advertises a default route to the area to guide the data. How the package reaches the destination outside the AS.

Question162: Route filtering can filter routing information.

Question163: IGMPv1 stipulates that when there are multiple routers in the shared network, the IGMP protocol itself selects the querier.

Question164: Which of the following descriptions is correct about BGP Local-Preference? (Multiple choice)

Question165: OSPF runs directly over the TCP protocol and uses TCP port number 179.

Question166: Compared to STP, the RSTP protocol defines different port states, including Discarding and Learning. About the description of the two port states, the correct is: (Multiple Choice)

Question167: Which three types of IP packet transmission methods are available? (Multiple Choice)

Question168: Which of the description about the port isolation of Huawei switch provides the function of configuring port isolation?

Question169: Which of the following is the default route that OSPF supports? (Multiple choice)

Question170: Which of the following descriptions are correct about the preemption mechanism in the static LACP mode? (Multiple Choice)

Question171: Which of the following description of the virtual link is wrong?

Question172: The differences between IGMP versions are: (Multiple Choice)

Question173: Which of the following is incorrect description of BGP neighbors? (Multiple choices)

Question174: About the Origin attribute of BGP, which of the following description is wrong? (Multiple choice)

Question175: What are the benefits of OSPF zoning? (Multiple Choice)

Question176: Which route prefixes in the following options will be deny when matching the following IP-Prefix when using routing policy for route filtering? (Multiple Choice)

Question177: The following is part of the configuration information of the router Huawei. The description about the configuration information which is wrong?
<Huawei> system-view
【 Huawei 】 ip as-path-filter 2 permit_200_300
【 Huawei 】 route-policy test permit node 10
【 Huawei-route-policy 】 if-match as-path-filter 2

Question178: Which description of this configuration is wrong?

Question179: What is wrong description of the working mode of PIM below?

Question180: Which one is wrong with the virtual connection in OSPF?

Question181: In the Established state, the BCP can exchange Update, Keepalive, Route-refresh, and Notification messages with the peer.

Question182: When two routers establish a logical BGP peer through multiple physical links, you must use the peer connect-interface command.

Question183: The correct description of the LSA is:

Question184: Regarding the description of PIM-DM, which is wrong?

Question185: Which of the following descriptions of the OSPF message is correct? (Multiple choice)

Question186: Which description of OSPF route aggregation commands is correct?(Multiple choices)

Question187: Which main steps does the IS-IS protocol route calculation mainly include? (Multiple choice)

Question188: Which of the following protocols support the multicast ASM model? (Multiple choice)

Question189: Which of the following LSA messages carry master-slave relationship information?

Question190: Regarding the multicast ASM model and the SSM model, which of the following statements are correct? (Multiple Choice)

Question191: If the receiver does not exist in the PIM-SM network, the router with multicast routing entries is:

Question192: OSPF divides the boundaries of the area on the router.

Question193: Given the configuration of RTA below, which of the following description about the configuration is wrong? (Multiple choice)

Question194: The following is a output information of a router:

Question195: The source tree uses the shortest path from the multicast source to the receiver, so it is called the shortest path tree SPT.

Question196: The import-route limit command cannot limit the maximum number of external routes that can be imported in an OSPF process.

Question197: The following is part of the configuration information of the router Huawei, which description about the configuration information is incorrect?
<Huawei> sysrem-view
[Huawei] ip as-path-filter 2 permit _200_300
[Huawei] route-policy test permit node 10
[Huawei-route-policy] if-match as-path-felter 2

Question198: In the RSTP network as shown in the figure, according to the configuration of the SWC in the figure, it can be determined that the type of the E0/1 port of the SWC is: (Multiple Choice)

Question199: One of the features of OSPF is that it only supports MD5 authentication.

Question200: Compared with the OSPF protocol. Which of the following characteristics does the IS-IS protocol have? (Multiple choice)

Question201: The following is a partial configuration of a router. The correct description about this part of the configuration is:

Question202: The BGP attributes that are typically used to control how data flows out of the AS are:

Question203: Which of the following routing tools that are not only used for BGP routing protocols? (Multiple choice)

Question204: The prefix (IP-Prefix) can be used for routing information filtering.

Question205: Which of the following about the OSPF protocol is correct? (Multiple choice)

Question206: The ABR is used to connect the backbone area and non-backbone area. It can be either a physical connection or logical connection with the backbone area.

Question207: Which of the following description about ABR in OSPF is wrong?

Question208: In PIM-SM, the description of the RP, which is wrong?