H12-821 - 3

OSPF supports multiple processes. Multiple different OSPF processes can run on the same router, and they do not affect each other and are independent of each other. The routing interaction between different OSPF processes is equivalent to the routing interaction between different routing. True. False.

In order to avoid inter-area loops, OSPF regulations do not allow routing information to be published directly between two non-backbone areas, and only allow routing information to be published within an area or between a backbone area and a non-backbone area. Therefore, each area border router (ABR) must be connected to the backbone area. True. False.

It is possible to prevent the HSB backup channel between the active and standby ACs from being interrupted and undetectable by sending active and standby service messages and retransmitting mechanisms. True. False.

When the virtual router responds to the ARP request, use the real MAC address of the main router. True. False.

Rapid detection technology can detect communication failures with adjacent equipment as early as possible, so that the system can take timely measures to ensure uninterrupted business. True. False.

Which of the following description about AS_PATH is wrong?. When there are two or more routes to the same destination in the router, these routes can compare the advantages and disadvantages of each other through this attribute, and the path with the longer AS_PATHA is super-priority. FalseAS_PATH refers to the list of ASs experienced by BGP routes in the transmitted path. BGP will not accept the route that contains this AS Number in the AS_PATH property. AS_PATH is a recognized mandatory attribute in BGP.

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?. The neighbor relationship status of the two devices stays at 2-way. The neighbor relationship between the two devices stays at Exstart. The neighbor relationship between the two devices can enter Full. The neighbor relationship status of the two devices stays in the Init state.

ASPF (Application Specific Packet Filter) is a packet filter based on the application layer. It will check the application layer protocol information and monitor the application layer protocol status of the connection, and implement a special security mechanism through the Server Map table. Then which of the statement about ASPF and Server map table is wrong?. ASPF dynamically creates and deletes filtering rules. ASPF dynamically allows multi-channel protocol data to pass through the Servermap table. ASPF monitors the packets in the communication process. The Server-map entry in the quintuple implements a function like the session table.

It can be used in a variety of routing protocols. The routing selection tool consisting of if-match and apply clauses is: route-policy. IP-Prefix. commnityfilter. as-path-filter.

During the operation of DHCP, various message types will be exchanged, so which of the following messages are not sent from the client to the server?. DHCP WANT. DHCP REQUEST. DHCP RELEASE. DHCP DISCOVER.

Which of the following statements about the forwarding plane of switching equipment is incorrect?. Realize packet encapsulation and decapsulation. Composed of main control board and interface board. Provide high-speed non-blocking data channel. Statistics of messages can be realized.

Regarding the following configuration commands for issuing default routes for each protocol, which of the description is wrong?. In the ISIS protocol, the default-route-advertise command is used to advertise the default routing information to neighbors. In static routing, the ip route- static default preferer command is used to generate a default route on the current router. In the OSPF protocol, the default-route-advertised command is used to advertise the default routing information to the common OSPF area. In the BGP protocol, the default-route imported command is used to enable the function of importing provincial routes into the BGP routing t.

Regarding the description of the VRRP master device, the error is: Periodically send VRRP packets. Even if the router is already the Master, it will be preempted by the priority Backup router. Forward IP packets whose destination MAC address is the virtual MAC address. Respond to the ARP request for the virtual IP address with the virtual MAC address.

The multicast destination address of the VRRP message is: 224.0.1.18. 224.0.0.18. 224.0.0.20. 224.0.1.20.

OSPF runs directly on top of the TCP protocol, using TCP port number 179. True. False.

( *; G ) routing table entries in multicast routing can guide packet forwarding. True. False.

The function of routing protocol priority is to assign different priorities to routes discovered by different protocols, so that when a router learns the same route from different routing protocols at the same time, it can have a selection priority. True. False.

One of the characteristics of OSPF is that it only supports MD5 authentication. True. False.

In RSTP, the edge port does not need to wait for the forwarding delay, and can directly enter the forwarding state. If the edge port receives BPDU, the edge port will be closed directly and enter the Aerror-dowm state. True. False.

A VRRP virtual router can only have a virtual IP address. True. False.

In the WLAN network, enable the HSB backup group. If the AP has been online on the main AC, and then add AP information offline on the standby AC, the AP status on the standby AC will be displayed as fault. In this case, you need to execute the undo hsb enable command in the HSB backup group view of the standby AC to disable the HSB active/standby backup function, and then execute the hsb enable command to enable the HSB active/standby backup function. At this time, the information on the active AC will be backed up to Standby AC, to achieve consistent backup of active and standby information, and the status of the AP on the AC will be displayed as standby. True. False.

The IGMP protocol runs between an IP host and its directly connected multicast router to maintain multicast group membership. True. False.

SSH uses asymmetric addition AES and DES to realize the security of data transmission, and uses HMAC to ensure complete integrity check of data. True. False.

To implement the traffic filtering function, you can use traffic-flter or MQC. Compared with traffic-filter, MQC can be called in more views. True. False.

Which of the following description of how to establish a BFD session is wrong?. BFD sessions can only be established dynamically. Static configuration of the BFD session refers to configuring the BFD session parameters through the command line, including local identifiers and remote identifiers, etc. When dynamically establishing a BFD session, dynamically assign a local identifier. The system distinguishes between static BFD sessions and dynamic BFD sessions by dividing the identifier area.

Which of the description about OSPF route summarization is wrong?. Any router in OSPF can perform route aggregation operations. Inter-area route aggregation refers to the aggregation of routing information with the same prefix, and only one route is published to other areas. OSPF has two route aggregation methods: ABR aggregation and ASBR aggregation. Through route aggregation, routing information can be reduced, thereby reducing the size of the routing table, and improving the performance of the router.

Which of the following scenarios is the SD-WAN solution suitable for?. Enterprise branch interconnection. Internal interconnection of enterprise data center network. Enterprise campus wireless network deployment.

Which of the following descriptions about configuring roaming groups is wrong?. After the AC is enabled with the Master Controller function, it joins the roaming group by default and can manage other ACs. Master Controller is a logical role that can be assumed by any common entity AC. Member ACs need to designate an AC as their own Master Controller. The Master Controller manages each AC through the CAPWAP tunnel.

In SSM, which version of IGMP needs to be used?. IGMPv1. IGMPv3. IGMPv2. IGMPv4.

Which of the following description about the prefix list is wrong?. The prefix list can match the prefix number and prefix length. The prefix list can be used for packet filtering. The prefix list can be used to filter IP prefixes. The prefix list has a stronger matching function for routing masks than the access control list.

When performing source NAT configuration and having no-pat configuration parameters, which of the following statements is correct?. Only the destination IP address is translated. Simultaneous source IP address and source port translation. Only source IP address translation is performed. Perform destination IP address and destination port translation.

The filter-policy 2000 export is configured in the IS-IS process, which statement about the function of this command is wrong?. It needs to be used in combination with route import, so that only part of the imported external routes can be advertised to neighbors. This command will filter the link state information published externally. If this command is not configured, the device will advertise all the routes imported to IS-IS by the external routing protocol by default. It will restrict the publishing of routing entries generated by the device itself.

The following is the information output by a router. The correct description of this information is: The router has an IBGP neighbor relationship with neighbor 2.2.2.2. The Router ID of the router is 1.1.1.1. The AS number of the router is 100. The router is negotiating with neighbors and using BGP version 3.

In RSTP, the edge port does not need to wait for the forwarding delay, and can directly enter the forwarding state. If the edge port receives a BPDU, the edge port will be directly shut down and enter the error down state. True. False.

D. DoS attack means that the attacker controls many zombie hosts and sends many well-constructed attack packets to the target network, so that the attacked party has the effect of refusing to provide services to normal user requests. True. False.

By default, VRRP of Huawei AR routers runs in preemptive mode. True. False.

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

Two level-1 routers in different areas can form a neighbor relationship. True. False.

The router directs the forwarding of data according to the forwarding table. True. False.

During dual-link hot standby, the AP will establish a CAPWAP link with the main AC and backup AC. True. False.

Multiple BGP processes cannot be configured on a router. True. False.

The RSTP protocol provides a variety of protection functions. For example, when the edge terminal port is configured in the protection state, the processing method of the edge port after receiving the BPDU message is: Forward BPDU messages as required. Obtain relevant information after the BPDU message. Close the port. Directly discard the BPDU message.

In the IS-IS broadcast network, which multicast MAC address does the Level-2 router use as the destination address for sending lH?. 0180-c200-0016. 0180-c200-0014. 0180-c200-0015. 0100-5E00-0002.

In PIM-DM, which working mechanism combination constructs SPT? (Multiple choice). pruning. Grafting. Status Refresh. Diffusion.

Regarding the description of the VRRP slave device, which is correct? (Multiple choice). When receiving a VRRP message with a priority of 0, the Slave will directly switch to the Master. The slave responds to the IP packet whose destination IP address is the virtual IP address. When the slave receives the VRRP message sent by the Master, it can judge whether the status of the Master is normal. The slave will discard IP packets whose destination MMC address is the virtual MAC address.

A certain router runs IS-IS and its output information is shown in the figure. Which of the following statements is correct? (Multiple choice). The S4/0/0 interface of this router has established the neighbor relationship of Level1-1 and Level-2 at the same time. The S4/0/0 interface of this router only establishes the neighbor relationship of Level1-1. The GE0/0/0 interface of this router has established the neighbor relationship of Level1-1 and Level1-2 at the same time. The GE0/0/0 interface of this router only establishes the neighbor relationship of Level1-1.

In the network shown in the figure, R1 and R2 run IS-IS and establish an adjacency relationship. The Loopback0 interface of R2 enables IS-IS, and the Loopback3 interface of R2 does not enable IS-IS. Under the IS-IS process of R2, do as follows Which of the following statements about the configuration shown in the figure is correct? (Multiple choice). The routes 10.0.2.2/32 and 10.0.2.3/32 do not exist in the routing table of R1. The route 10.0.2.3/32 does not exist in the routing table of R1. There is a route of 10.0.2.2/32 in the routing table of R1. There is a route of 10.0.2.3/32 in the routing table of R1.

The networking shown in the figure, SWA, SWB, SWC and SWD run RSTP, which of the following statements is correct? (Multiple choice). After the edge port receives the BPDU, it will re-participate in the calculation of the spanning tree. After being configured as an edge port, the interface can quickly enter the forwarding state. The edge port can be enabled on the GE0/0/2 port of the SWB, so that the interface connected to the terminal can quickly enter the forwarding state. The edge port can be enabled on the GE0/0/2 port of the SWC, so that the interface connected to the terminal can quickly enter the forwarding state.

The four routers run IS-IS and have established adjacency. The area numbers and router levels are marked in the figure. The link between R1 and R2 is a PPP link, and R2 is DIS. Which of the following statements is correct? (Multiple choice). R2 sends the LSP to R3 and R4 in unicast mode. If R1 sends an LSP message, R2 needs to send PSNP for confirmation. R3 periodically sends CSNP to help achieve Level-2 LSDB synchronization.

As shown in the figure below, if the firewall receives a message from PC1 to PC2, which of the following statements is correct? (Multiple choice). The message cannot match any security policy. The packet matches the security policy rule 1, and the firewall will forward the packet. There is no configuration source in the security policy rule2, and the security domain shows that it matches any security domain. The packet matches the security policy rule 2 and will be discarded by the firewall.

A certain router runs IS-IS. The figure below shows the Hello message sent by the router. Which of the following statements is correct? (Multiple choice). The System ID of the router is 0050.0600.7008. The interface address of the router is 10.6.7.5. The area number of the router is 00.0001. This router is a LEVEL-1-2 router.

As shown in the figure, PC1 and PC2 are hosts belonging to the same network segment. Which of the following descriptions about the status of IPv6 neighbors between PC1 and PC2 are correct? (Multiple choice). If the C address information of PC2 can be queried on PC1, the neighbor relationship may be Stale at this time. If the C address information of PC2 can be queried on PC1, then the neighbor relationship at this time is set as Reachable. There may be five neighbor states between PC1 and PC2, which are Incomplete, Reachable, Stale, Delay and Probe. If the MAC address information of PC2 can be queried on the PC, the relationship between the department and the residence may be Probe at this time.

The network administrator checks the BGP neighbor information on a router, and the neighbor information is shown in the figure. Which of the following statements about this information is correct? (Multiple choice). The router has not received a BGP route prefix from the peer. The Router ID of the local router is 1.1.1.1. The number of messages received and sent by the peer 3.3.33 is 10 and 20 respectively. The neighbor relationship with peer 3.3.3.3 is an IBGP peer.

In the network shown in the figure, all switches run the RSTP protocol. If the E1 interface of SWB fails, the RSTP processing process: (Multiple choice). SWB deletes the port entry of the port with the purpose of E1 in the MAC address table. On all non-edge forwarding ports, send a topology change notification (Topology Change notification) to notify other switches that a topology change has occurred in the network. Recalculate the spanning tree, and SWB elects E2 as the new root port. Send topology change notifications (Topology Change notification) on all forwarding ports to notify other switches that topology changes have occurred in the network.

When using routing policy for routing filtering, which routing prefixes in the following options will be denied when matching the following IP-Prefix? (Multiple choice) [HUAWEI] ip ip-prefix aa index 10 deny 0.0.0.0 24 less-equal 32 [HUAWEI] ip ip-prefix aa index 20 permit 0.0.0.0 0 less-equal 32. 1.1.1.1/26. 1.1.1.2/16. 1.1.1.1/32. 1.1.1.1/24.

Among the following options, which routing prefixes satisfy the following IP-Prefix conditions? (Multiple choice) [HUAWEI] ip ip-prefix test index 10 permit 20.0.0.0 16 greater equal 24 less-equal 28. 20.0.1.0/24. 20.0.1.0/23. 20.0.1.0/25. 20.0.1.0/28.

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. The timer takes the minimum value, so the final result is that the timer value of peer 1.1.1.2 takes keepalive10 hold 30. Peer configuration takes priority, so the final result is that the timer value of peer 1.1.1.2 takes keepalive 10 hold 30. The global configuration takes precedence, so the final result is that the timer value of peer 1.1.1.2 takes keepalive 30 hold 90. The default configuration is timer Keepalive 60 hold180, so pee r1.1.12 has a faster speed of detecting Peer connection failure than the default value.

A network runs IS-IS. The LSP information of a router R4 in the network is shown in the figure. Which of the following statements is correct? (Multiple choice). The LSP is an LSP generated by a pseudo node. The cost of R4 to reach the external route is 64. The external route described by this LSP is 10.0.4.4/32. The System ID of R4 is 4004.0000.0004.

In the RSTP network shown in the figure, according to the configuration of SWC in the figure, it can be judged that the type of E0/1 port of SWC is : (Multiple choice). Edge port. Preliminary port. Designated port. Root port.

The three routers run IS-IS and have established an adjacency relationship. The area numbers and router levels are marked in the figure. If the road between R1 and R2 is interrupted, which of the following statements is correct? (Multiple choice). R1 sets the Age of the LSP generated by R2 to 0. The default route in the R2 routing table will disappear. R1 runs the SPF algorithm to remove R2 from the SPF trunk. The default route in the R2 routing table still exists.

As shown in the figure, the management VLAN of the LAN is VLAN 10, the AP obtains an IP address through DHCP, and the network segment is 10.1.1.0/24 AP, AC and AR are DHCP client, DHCP relay device and DHCP server respectively. Which of the following is correct about the configuration of the DHCP relay device and the DHCP server? (Multiple choice). [AC] dhcp server group AP [AC-dhcp-server-group-AP] dhcp-server 172.21.1.2 [AC-dhcp-server-group-AP] quit [AC] interface Vlanif 10 [AC-Vlanif10] dhcp select relay [AC-Vlanif10] dhcp relay server-select AP [AC-Vlanif10] quits. [AR] ip pool AP [AR-ip-pool-AP] network 172.21.1.0 mask 24 [AR-ip-pool-APJ gateway-list 172.21.1.2 [AR-ip-pool-AP] excluded-ip-address 172.21.1.1 [AR-ip-pool-AP] quit [AR] interface GigabitEthernet 0/0/1 [AR-GigabitEthernet0/0/1] dhcp select global [AR-GigabitEthernet0/0/1] quit [AR]ip route-static 10.1.1.0 255.255.255.0 172.21.1.1. [Ac]dhcp server group AP [AC-dhcp-server-group-AP] dhep-server 10.1.1.2 [AC-dhcp server group-AP] quit [AC] interface Vlanif 10 [AC-V1anif10] dhcp select relay [AC-Vlanif10] dhcp relay server-select AP [AC-Vlanif10] said. [AR] ip pool AP [AR-ip pool-AP] network10.1.1.0 mask 24 [AR-ip-pool-AP] gateway-list 10.1.1.2 [AR-ip-pool-AP] excluded ip-address 10.1.1.1 [AR-ip-pool-AP] quit [AR] interface GigabitEthernet 0/0/1 [AR-GigabitEthernet0/0/1] dhcp select global [AR-Gigabi tEthernet0/0/1] quit [AR] ip route-static 10.1.1.0 255.255.255.0 172.21. 1.1.

Which routes in the following options meet the following ACL conditions? (Multiple choice) [HUAWEI] acl number 2001 [HUAWEI-acl-basic- 2001] rule 0 permit source 10.1.1.0 0.0.254.255. 10.1.2.1/32. 10.1.3.1/32. 10.1.1.1/32. 10.1.4.1/32.

The port role that cannot be in the forwarding state in RSTP is? (Multiple choice). Alternate Port. Designated Port. RootPort. Backup Port.

Which statement about IGMP Proxy is correct? (Multiple choice). IGMP Proxy can work with NQA to detect the link status and realize fast switchover between active and standby links. IGMP Proxy is usually deployed on devices between member hosts of access devices. The downstream interface of the IGMP Proxy device generates a multicast forwarding entry through the information that the member host joins and leaves the multicast group. The IGMP Proxy device cannot replace the IGMP querier to send query messages to downstream member hosts to maintain group membership.

Which of the following descriptions about AC roaming groups is wrong? (Multiple choice). The AC in the roaming group needs to deploy a Master Controller. The ACs in the roaming group use DTLS extended tunnels to encapsulate and transmit roaming-related information. The Master Controller must be the AC in the roaming group. STAs can roam only between ACs in the same roaming group.

Which of the following LSAs has a propagation range only in a single area? (Multiple choice). AS External LSA. Summary LSA. Router LSA. Network LSA.

After dual-machine hot backup is configured, the primary and backup channels cannot be established. The information on the primary device cannot be normally backed up to the backup device, resulting in abnormal dual-machine hot backup. What is the possible cause of this failure? (Multiple choice). The source IP address and source port number of the local end are inconsistent with the destination IP address and destination port number of the peer end. The retransmission times and retransmission intervals of the active and standby service packets at both ends are inconsistent. The priorities of the two ACs are the same. The TCP channel is not established.

Regarding the load sharing description of VRRP, which is correct? (Multiple choice). The load sharing method refers to the establishment of two or more backup groups, and multiple routers carry services at the same time. When configuring priority, the VRRP masters of the three virtual routers can be on different routers. Multiple virtual routers can be created on one interface of the router, so that the router can be used as the Master router in one virtual router, and at the same time as the Backup router in other virtual routers. The load sharing method means that multiple routers undertake business at the same time, so the loadsharing method requires two or more virtual routers.

Which protocol modules can BFD detection be linked with? (Multiple choice). OSPF. VRRP. BGP. Static routing.

In a network environment, there are both switches running RSTP and switches running SIP, then the phenomenon that will appear in this network is: (Multiple choice). If it is a Huawei switching device, RSTP will switch to STP mode. After the STP switching device is withdrawn from the network, the RSTP -running switching device can migrate back to the RSTP working mode. RSTP can interoperate with STP, but at this time RSTP advantages such as fast convergence are lost. RSTP and STP are not interoperable and will perform independent operations. If it is a Huawei switching device, the STP will switch to RSTP mode, and the switching device running RSTP can be configured to switch back to the RSTP working mode after the switching device is removed from the network.

Regarding BGP MED, which of the following descriptions are correct? (Multiple choice). The default value of BGP route MED is 0. By default, BGP route selection rules can compare the distance between routes from different autonomous systems. By default, if there is no MED value set in the route attribute, press Process. If the bestroute med-none-as maximum command is configured. Then the maximum value of the MED correction is 4294967295 to process. In BGP route selection rules, the priority of MED is lower than AS-Path, Preferred-Value, Local-Preference, Origin.

Which of the following SA descriptions about various messages is wrong? (Multiple choice). DD only contains the summary information of the LSA, which includes LS Type, LS ID, Advertising Router and LS Sequence Number. LS Request message only has LS Type, LS ID and Advertising Router. LS Update message contains complete LSA information. LS Ack message contains complete LSA information.

A certain router outputs the following information, 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（Gigabitethernet 0/0/0） 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. This router is the DR. The interface address of this router is 10.1.12.1. The Router-ID of this router is 10.1.1.1. The network type of this interface is broadcast.

The statement about OSPF AS-External-LSA, which is correct? (Multiple choice). Net mask is set to all 0. Link State ID is set as the destination network segment address. Advertising Router is set to the Router ID of ASBR. Use Link State ID and Advertising Router to uniquely identify an AS-External-LSA.

In the N+1 backup network of WLAN, which of the following statements about the application of option43 is correct? (Multiple choice). The command to configure the IP addresses of the active AC and the standby AC in the option43 parameter field of the DHCP server is option43 sub-0ption 2 ip-address ip-address &<1-8>. If the AC with the IP address advertised by option 43 does not respond to the AP, the AP will immediately fail to discover the AC. After configuring the option 43 field, the AP will only send unicast Discovery Request messages to the AC IP address advertised by option 43. To configure the option 43 field, you need to notify the AP of the IP addresses of its active AC and standby AC, and also need to notify the IP addresses of other active AC.

The session-based state inspection firewall has different processing procedures for the first packet and subsequent packets. Which of the following description is correct? (Multiple choice). When the status inspection mechanism is turned on, subsequent packages also need to be checked for security policies. When the packet arrives at the firewall, it will search the session table. If there is no match, the firewall will execute the first packet processing process. When the status inspection mechanism is turned on, when the firewall processes TCP packets, only SYN packets can establish a session. When the packet arrives at the firewall, it will look up the session table, and if it matches, the firewall will execute the subsequent packet processing process.

Which of the following dynamic routing protocols can be applied to IPv6 networks? (Multiple choice). Is-ls. BGP6. IS-ISv6. OSPFv3.

The comparison items of the master switch election in the stack include? (Multiple choice). Running status. Stack ID. MAC address. Stack priority.

The RSTP protocol defines different port states, including Discarding and Learning. Which of the description of these two port states is correct? (Multiple choice). Ports in the Discarding state do not learn the MAC address table. Ports in the Discarding state and the Learning state do not learn the MAC address table. Ports in the Learning state do not learn the MAC address table. The ports in these two states do not forward data frames.

Routing tools that are not only used for BGP routing protocol have (Multiple choice). as-path-filter. ACL. IP-Prefix. community-filter.

Which of the following default route distribution methods does OSPF support? (Multiple choice). It can be issued non-mandatory. Can only be issued by force. Can be issued on ASBR. Can be issued on ABR.

The correct description about the prefix list is? (Multiple choice). The prefix list can be used for packet filtering. The prefix list is used to filter the IP prefix, which can match the prefix number and prefix length at the same time. The prefix list is used to filter IP prefixes, and cannot match the prefix number and prefix length at the same time. The prefix list cannot be used for packet filtering.

Regarding the command description of OSP, which is wrong? (Multiple choice). The difference between OSPF v2 and OSPF V3 interface configuration commands is that OSPFv2 can use the network command, while OSPF v3 can be directly enabled on the interface. The stub router command is used to configure the secondary router as a Stub router, and the stub router can form a neighbor relationship with a non- stub router. There is no need to use router-id in OSPF v3 configuration, the configuration method is the same as OSPFv2. The no-summary parameter is configured for the stub area and the totally stub area.

The network administrator of a company checks the FIB of the router. What fields does the FIB contain? (Multiple choice). TimeStamp. Protocol. Destination/Mask. Cost.

What is the process sequence of VLAN Pool assigning VLANs to terminals? (Multiple choice). The terminal accesses from the divided VLAN. Determine the VLAN Pool and VLAN algorithm bound to the VAP. The terminal accesses the VAP. Assign VLANs to terminals according to the VLAN algorithm.

Which of the following statements about the BFD detection mode is correct? (Multiple choice). Asynchronous mode is a commonly used BFD detection mode. In query mode, once the BFD session is established, the system will no longer send BFD control packets periodically. Asynchronous detection mode does not support echo function. In asynchronous mode, the systems will send BFD control packets according to the negotiated period. If a system does not receive the BFD control packet from the peer within the detection time, it will declare the status of the BFD session as Down.

Which of the following statements about the application of BFD is correct? (Multiple choice). The one-arm echo function refers to the loopback operation of BFD packets to detect the connectivity of the forwarding link. The linkage between BFD and OSPF is to associate BFD and OSPF, and then notify OSPF through BFD's rapid detection of link failures, thereby speeding up OSPF 's response to network topology changes. BFD single-hop detection refers to the IP connectivity detection of two directly connected systems. BFD multi-hop detection means that BFD can detect any path between two systems. These paths may span many hops or may overlap in some parts.

Which of the following are multi-channel protocols? (Multiple choice). Telnet. FTP. H.323. SMTP.

Regarding the multicast ASM model and SSM model, which of the following statements are correct? (Multiple choice). In the SSM model, the receiver has already known the specific location of the multicast source in advance through other means. SSM directly establishes a multicast forwarding tree between the receiver and the multicast source. Receivers in the ASM model cannot pre-direct the location of the multicast source. SSM and ASM use the same multicast address range.

There can be multiple nodes under a route-policy. Different nodes are identified by node. Each node can have multiple if-match and apple clauses. Which of the following descriptions is wrong? (Multiple choice). The relationship between the if-match clauses under each node is " or ". The relationship between the if-match clauses under each node is " and ". There is an " and " relationship between different nodes. There is an " or " relationship between different nodes.

There are many ways to establish clusters with modular switches. What methods does Huawei modular switches support to establish clusters? (Multiple choice). Established through the cluster card on the interface board. Established through cluster cards on the main control board. Established through the service interface on the interface board. Established through the cluster card on the switching network board.

The BGP protocol is an inter-domain routing protocol. Which of the following description of the protocol is correct? (Multiple choice). Neighbor authentication is not supported. Support automatic discovery of neighbors. Support rich routing strategies. The BGP protocol uses a reliable transport protocol.

In route-policy, what are the BGP attributes that can be used in the apply clause? (Multiple choice). MED. AS-Path. Tag. Local-Preference.

Which of the following information is carried in the BGP OPEN message? (Multiple choice). Routing attributes. BGP Router ID. Hold time. Local Autonomous System (AS) number.

What packet types does OSPF include? (Multiple choice). Link State DD. Hello. Link State Request. Database Description.