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If you run PIM-SM in a multicast network, you need to build a multicast forwarding tree between the multicast source and the receiver to enable the receiver to receive the multicast effect, so what are the following options for the correct tree sketch for the build?
When the ACL in the VRP has multiple matching rules (rules), the matching order is about Which of the following statements is true?( Confirmed).
As shown in the figure, three switches SI, SN2, and SN3, where SN1 is the root bridge between S1 and SN2 Now that link support SN2 cannot receive the configuration BPDU sent by the root car, the administrator needs to configure which spanning tree protection mechanism to prevent the problem of link congestion?
Deploying the ISIS protocol in an IPv6 environment is true in the following statement (radio).
The following statement about IPv6 Over VXLAN is wrong as ?( Single choice questions).
Host HW1 in the HW device network Wants to join a video conference, so what does that host do?
The following is the correct description of the aggregation of BGP (radio).
What messages does an NMS (Network Management Station) running SNMPV1 send to the agent?
Which of the following sequences can be matched by the regular expression [^100|200]$?
There is no routing protocol running on the router HW and only one default route reaches the remote network. On the router job with the extension Ping remote file server address 105401. The result of Ping on the router job is presented as "Request time." out”? Based on the above description, the error in the following analysis is ?
After you divide an interface of the firewall into the Untrust security domain, the interface belongs to the Untrust zone and no longer belongs to the Local zone.
The following description of MP-BGP is incorrect?( Single choice questions).
If you need to use the delault-route importd command if no default route exists in the local IP routing table , a default route is issued to the BGP peer (group).
Regarding the DSCP field, the following statement is incorrect: single selection
RD is used to distinguish between the same IP address in different VPNs, and how many bits (radio) the RD contains
The BSR/RP mechanism described below describes the correct determination ?( Multiple choice questions).
There can be multiple C-BSRs in the
In order to reduce the number of OSPF routes in some unscheduled areas, the OSPF protocol has developed special area functions, and the following characteristic description of ospf special areas is correct?( Single choice questions).
What command can be used to prevent users from accessing multiple devices through the HUB on the switch's access port?( Radio).
In a data communication session between two hosts, which level does the session layer of the oSI model of the host on one end communicate with the osl mode of the host on the other end?
In different scenarios, RSTP provides different protection functions, and the wrong statement about this statement is
When the load is an ICMPv6 message, what is the numeric value of the Next Header field in the IPv6 header if the presence of an extended header is not taken into account?
Regarding route introduction, the following description is correctly ?( Multiple choice questions).
In an intra-domain MPLSVPN network, when a packet enters the public network and is forwarded, it is encapsulated with two layers of MPLS tags, and the description of the two layers of tags in the following options is incorrect
Auto-negotiate mode is to obtain the maximum interface rate and operating mode, the network administrator configures all Ethernet interface rates of a working switch to 10OMbps, and the operating mode is configured as Full-duplex, when a network card is configured After the auto-negotiate workstation is connected to the switch, the negotiation result is that the interface rate is 10OMbps and the working mode is half-duplex, which of the following explanations is the most reasonable for this phenomenon?
When deploying BGP/MPLS IPVPN, OSPF's VPN route tag is not present
The extended properties of MP-BGP are passed only locally, only locally, and only meaningful on routers that receive MP-BGP routes and generate OSPF LSAs.
IS-IS supports the processing and computation of IPv6 routes by adding ATLPs to carry IPv6 addresses and reachability information.
If you delete a declared route entry on a BGP router, the BGP routing ring is triggered to send an Update message for route scattering, which carries the accepted mandatory attribute of the route entry that was discarded.
A company network runs the OSPF protocol, an engineer in order to understand the OSPF mechanism in the network to perform packet capture operations, the following ospf message description is correct?
As shown in the figure, Department A of Branch 1 has access to the Internet, but Department B can only use an encrypted VP to access headquarters resources, and NAT can be configured on the egress device The policy enables Department A to access the Internet, while the PSecVPN (ESP Protocol) + Tunnel mode method configured for Department B gives it access to headquarters.
B. Right
C. Wrong
If the OSPP protocol is running in the network , after configuring the non-backbone area in the OSPP area as the Totally Stub region, the ABR router sends a message to Totally. The Stub region issues an LSA with an LS ID of 0000, and what type of LSA is the LAS to?
In an HW MPLS network, what parameters are used to define a forwarding equivalent class??
Because BGP is an EGP routing protocol, BGP routing policies can only be deployed between EBGP neighbors, and routing policies between IBGP neighbors are not valid.
The following statement about the Security Alliance SA in IPSec is wrong with ?
In an Hw IP multicast network—which of the following multicast features are associated with (*, G) table entries? ( Multiple select)
In a multicast network, what causes multicast traffic to not forward properly?
For Layer 2 VPN technology, the following statement is correct? Multi-select
DHCP Relay is responsible for forwarding DHCP packets between the DHCP server and the DHCP client, assisting the DHCP server in dynamically assigning network parameters to the DHCP client.
0SPFV2 is running on the IPV4 network IGP: OSPF3 is running in the IPV6 network, OSPF35 OSPFV2 has the same message type. Includes hello messages, DOD messages, LSR messages, LAU messages, and SAX messages about OSPP The following statement is correct?
In Huawei devices, when SIS introduces external routes and sets external route tags for route information, the Metric type of ISIS does not need to be modified and remains default.
OSPF fast convergence is an extended feature to improve the convergence speed of routing, in which PRC works by speeding up routing computation by performing path calculations only on the affected nodes when the network topology changes.
Two routers, connected together through the serial port, but can not ping between each other , now check the port status as follows: Can the following information determine what the cause is?
Router A has an IP route entry with a purposeful CIDR block of 10001/32 and an outgoing interface of GigabitEthernetO/0/1. Now add the following configuration: acd number 2000 rule 10 permit source1001.10#traffic classifier test if-match acl 2000 # traffic behavior test remarkdscp cs3#traffic policy test classifier test behavior test#
interfaceGigabitftherneto/0/1 ip address 1001212552552550 traffic-policy test outbound#assuming router A received a destination IP of 10001 Of packets, the following statements are correct:
There are three port roles defined in RSTP, with alternative ports and backup ports flags in STP messages The port role values within the fields are consistent, all of which are 01
The Layer 3 logical interface on XLAN L3 Gateway that enables communication between different VXLAN virtual networks is ?
MSTP switches treat RSTP switches as MSTP domains, MSTP, which are formed by a single switch The interchange resolves the RSTBPDU to MSTBPDU, where IRPC is 0
The fields that represent priority in the VLAN (8021Q) data encapsulation are a total of 6 bits.
An engineer performed the ingestion operation on an OSPF router in a network of the company, is the following statement about the introduction of the routing LSA correct?
What are the reasons why the BGP connection is down after it is successfully established ? ( Single choice questions) Single choice
A bookstore provides a wired network for customers to learn online. However, one day, it was found that some users could not access the network, and after inspection, it was found that the IP resources of the DHCP address pool had been exhausted. Which of the following is the best way to solve the problem of the moment? ( Single choice questions).
?? Route ? Policy ??:ip community-filter Ipermit 100: 1 ip as-path-filter 2 permit ^I00$ route-policy test permit node 10 if-match communityfilter 1 if-match as-path-filter 2 apply
as-path 200 Is the above configuration description correct?
Assume that BGP/MPLSIPVVPN, OSPF, LDP, and static routing protocols are already enabled on the PE router . Which of the following protocols need to enable GR on PE in order to get NSF functionality? (Multiple choice questions).
In order to reduce the number of OSPF routes in certain areas, the OSPf protocol has developed special area functions, and the following description of the characteristics of OSPF special areas is correct
Run the SSM across the entire HW IP multicast network. The following about SSM understands correctly?( Multiple choice question)
If there are multiple recipients in a multicast group, the administrator enables the IGMP-Snooping function on the switch connecting the recipient, and when the receiver receives the universal group query packet of the queryer from the switch, how should multiple recipients respond?
Regarding the MPLS basic forwarding process, the following description is incorrect? Radio
As shown in the figure, in the context of IPv4 and IPv6, the SEL field in the NET address of isis always takes a value of 00 ?
In the forwarding table of the switch, a MAC address can correspond to only one outlet at a time
There is an existing router interface serial 0 in OSPF area 1 , well will interface Serial 0 is set to silent interface. So what is the impact of this setting?
What information does this contain in a basic layer packet? (Multiple choice) A Data link layer header
B. Upper-level data
C. The network layer header
D. path records
E. Network Layer Tail
The following description of the Layer 6 functionality in the OSI reference model is correct?
As shown in the following figure, R1, R2, R3 establish a neighbor relationship of Level2 The IP routing table for R3 is correct (multiple choice).
What are the following techniques for improving MPLS BGP VPN reliability?( Multiple choice question)
Regarding the description of the security level of the configured firewall security zone, the error is ?
Which of the following BGP attributes is not required in the Update message for a BGP route?
In the multi-level RR scenario, the first-level RR will be connected to a large number of second-level R, which may cause the BGP circuit of the first-level RR to overflow from the table Risk of R BGP routing table overflow?( Radio).
The DHCP protocol assigns to clients—some TCPIP-related parameter information—in the process DHCP defines a variety of messages that are encapsulated at the transport layer :(sortic).
Which field in the IPv6 basic header has a similar effect to which field in the IPv4 header does?
Which of the following parameters are not required when configuring BGP Peers?
In RSTP , which port provides a backup path to reach the root node of the spanning tree? What state is the port in?
The interface Serial0 of an existing router is in OSPF area 1, and the interface Serial0 is set to Silent interface. So what kind of impact will this setting have
If we have a VPN instance configured on a router, if we need to view the VPN route on a Huawei router, which of the following commands should we use?
About multi-instance CE (Multi-VPN-Instance CE, MCE). What is the error described below?
Router RL and Router R2 run BGP both routers are in the AS65234 The router R2 route is present in the BGP routing table of router RI, but not in the P of router R1 road
A routing tool can define multiple entries. Which tool will automatically add a deni-any entry at the end of the configuration?
BGP4+ is running between two routers, and the neighbor relationship is normal, but the BGP routing table of the router on this side does not have a neighbor route entry.
Which address prefix in the following options indicates that the address is globally unique and globally routable among unicast addresses in IPv6, similar to a public address in IPv4?(). Single choice questions).
When a Layer 3 switch sends IP packets originating from one VLAN to another LAN, which field in the following options is overridden?( Single choice questions).
The correct statement about the difference between OSPFv2 and OSPFv3 is ? Multi-select
In the following topology diagram, R1 can access the Internet through R2 and R3, R1 and R2, R1 and R1 An EGP connection is established between R3 , and R2R3 belongs to the same AS, each via BGP Publishing a default route that requires R1 to visit lnternet's traffic preference R2, can the following practices be achieved?
Regarding the site in the BGP/MPLSIP VPN network architecture, the following description is correct?
A home user has opened a 1Mb/s bandwidth, and in order to improve the user experience, the operator can stabilize 2Mb/s when measuring speed If we use the listening bucket technology to achieve this requirement, which of the following methods is optimal.
In broadcast networks, elections to DIS begin only after a neighbor relationship has been established
The link quality of a company's network is poor, often failures lead to route oscillation, and even occasionally there are routing loops, in order to prevent the recurrence of these phenomena, the network administrator decided to deploy URPF in the whole network to improve the stability of the network
Among the routing policy tools commonly used by BGP, which ones can be used to filter routes?
The existing router HWl running BGP is configured with both IBGP neighbors and EBGP tenants. The following descriptions about IBGP Neighbors and EBGP Neighbors are correct?
As shown in the figure,
all interfaces of the router have OSPF turned on, and the COST value of the link is identified in the figure. R2's loop backO interface advertises a cost in region l, then R1 reaches 10022/32 The value is
In the VXLAN implementation, the mapping relationship between VNI and BD is
To build a loopless Layer 2 network, which of the following schemes is optimal?( Single Choice)
IPv6 introduces the Solicited-Node address, which is described correctly below (multiple choice)
As shown in the figure, three switches S1, SW, and SN3, where SWI is the root bridge, and link congestion occurs between SI and SW2, SWD cannot receive the configuration BPDU sent by the root bridge, which spanning tree protection mechanism does the administrator need to configure to prevent the problem caused by link congestion?( Single choice questions).
The following description of the attributes of BGP is correct?( Single choice questions).
IPV6 multicast introduces the concept of multicast scope, which of the following ways is the multicast scope concept implemented? Multi-select
There is an existing router running OSPF HWL, HW1 interface serial0 is published in zone 1, configure commands under the OSPF process nssa default-route-advertise, based on the previous description, infers which of the following options are correct?
The HTTP protocol is based on TCP, so http Flood attacks can be defended against HTTP Flood attacks using the TCP Flood attack prevention method.
Mainstream Layer 2 tunneling technologies include VXLAN TRILL, NVGB and MPLS.
ISIS does not send CSNP packets under the P2P network type during the neighbor establishment process.
If a Huawei S series switch needs to designate a member switch as the primary switch of the stack, it can power on this switch first, and then power on other member switches after 20s.
You need to access the subnets of different VPNs in the VXLAN network , such as information about one subnet
Bottom: RT=10:1ORT.100:1000 Export 1000 in EVPN instance and RT-100-100 in VPN instance.
Which of the following can be basketed for another subnet?
The switch role in the stacking system does not include ?
A From the switch
B. Candidate Switch
C. Standby Switch
D. Primary Switch
XLAN uses BGP EVPN to establish a tunnel, what type of message is used? ( Single choice questions).
The following statement about EVPN Type5 routing is wrong?( Single choice questions).
The network administrator is ready to use the 6to4 automatic tunnel to carry IPv6 data on the IPv4 network, and the IPv4 address of the router interface is 1381485210, so the corresponding tunnel address is 2001:8a0e:55d2:1:230:65ff:fe2:9a6?
Regarding the WRR (Weight Round Robin) description of the error is ?( Multiple select).
ISIS elects DIS in broadcast multiplexed access networks, and the following statement about DIS is correct?( Multiple choice)
The following statement about OSPF route filtering is incorrect.( Single choice questions).
If all the public IP addresses are used by a company's intranet users to access the Internet using NAT's No-pat method, what will happen to subsequent intranet users who access the Internet?
S-4S supports multi-instance and multi-process, that is, on an IS-IS router, multiple VPN instances can be configured to associate with multiple IS-S processes, the following description of IS-IS multi-instance and multi-process, which are correct ?
If the topology of the entire network does not change, but the allocation of IP segments in the router changes, ISIS only uses PRC to calculate the changed routing information, and does not recalculate all SPT
Configuring filter-policy 2000 export in the IS-IS process, the wrong statement about the function of the command is ?
When troubleshooting a local area network, you notice a large number of frame alignment errors, FCS errors and LAG conflicts, and the possible cause of these problems is ?
MPLS is called multiprotocol label switching, and with respect to label descriptions in MPLS, the correct one is ?( Multiple select).
In order to study the working mechanism of the OSPFv3 protocol, a project to build a network topology is as follows, the configuration of R1 and R2 is as follows, please ask the LSA switched between R1 and R2 What are the types?
In a network in MPLSVPN, different CE devices can exchange routing information with the same PE device using different routing protocols, and different CE devices can exchange routing information with the same PE The routing protocols used between devices are independent of each other
LDP messages are exchanged between LDLRs running the LDP protocol, and LDP messages can be divided into four types according to function, which of the following is not an LDP message type ?
Compared to IPV4 multicast, which of the following descriptions is the characteristic of IP6 multicast?
In the description of the MAC address spoofing attack, the error is ? Radio
To achieve an on-machine migration in the BGP EVPN distributed gateway scenario, which of the following messages is required?
Users within a typical VPN can only communicate with each other, not with Internet users, and with Internet. But VPN individual sites may have access to internet's needs. The correct description of the implementation of VPN interconnection with internet is ?( Multiple choice questions).
As a network administrator, which of the following protocols can I use for network device configuration?
Which of the following attacks are DoS (Denial of servioe) attacks?( Multiple choice question)
As shown in the figure, the use of redundant links between the branch and the headquarters to establish IPsecVPN, while turning on URLPF on the Router_B for traffic from branch l, which of the following options is correct?
There are routers as follows, according to which the compromise conclusion is wrong?
In the evolution from IPv4 networks to IPv6, some transition technologies have emerged, which of the following are common types of transition technologies?
?? ipIp- prefoi p prefierame lndeindeoxrunmber)( pemit demy)ip+4adrssmasklengh gratrequa grater-cqual abel]lescqualesequl ole) for • Pprefofiier? If a pre-list of tooequal has been specified, but the greater-equal has not been specified, then how much of the prefix's range is sufficient?(). Radio neck).
QinQ technology is a technology that extends the VLAN space by adding a layer of 8021Q tag messages to the extended VLAN. The function of space, the following statement about QInQ is mispronounced?
In a network, the same gigabit running S and OSPF anti-tampering and fluttering as shown in the figure, on the two border routers RTB and RTC are introduced into the wine route, the device question is to use gigabit one port strobe, , 222 The network is introduced into the OSE via impotrote direct on the RTD, assuming that all other configurations are dead default configurations, then the description of this network is wrong ?
Regarding the Stub region and the Totally Stub region of the OSPF protocol, the following statement is correct (multiple choice)
As shown in the figure, as shown, as the AS10 has two paths to access THEA1, the optimal route passed from the 4S23 by default is now sprinkled with S00 to ass4O The odds belt wins even more worrying. Therefore, in the R2 configuration as follows, after the completion of the coordination, it is found that the most worrying route has not changed, and some operations can be adjusted to make the configuration
??[ R2]jpas-path-fiter l permit "4D0& [2]pouteplicy med permit node 10[R2-routepolicyli- match aspath-ilterl[R2-oute-policylapplycoast.20
The topology diagram and configuration are as follows, and now we hope that there is no buttoned route entry of 10033/32 in the Rl route table
There is an existing network of router RI, router R, router R3, and router R4 The 4 routers are interconnected via an LN network. All 4 routers are equipped with basic oSPF. When you execute the command "displayosp" on router R2 f peer", router R2 and router R3 are discovered The status between is "2-way". So what conclusions can you draw from this output? Multiple choice questions).
Four routers R1, R2, R3, and R4 run IS, and the I5S router type is noted in the diagram. All four routers have an area address of 49001, and looking at the routing table on R1l shows the following results, the reason why R did not reach the route of 1034344
TESTED 09 Oct 2024