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From the user's point of view, any phenomenon that affects the business can be defined as a fault.
On the network shown in the figure, EBGP peer relationships are established between neighboring routers through directly connected interfaces. The router ID of each router is 10.0.X.X, and the AS number is 6500X, where X is the number of the router. Both Rl and R4 have static routes to 192.168.1.0/24, which are imported to BGP through the import-route command. R3 is configured with the peer y.y.y.y as-path-filter 1 import command for all peers. Which of the following sets of commands enables R3 to select the route with the longest AS_Path to 192.168.1.0/24?
As shown in the figure, in a medium-sized network, BGP generally deploys dual RRs to improve R reliability. When deploying dual RRs, the Cluster IDs of the two RRs are generally set to be the same. The reason for this is
On the OSPF network shown in the figure, the cost values of links are marked, and OSPF IP FRR is enabled on R1. Which of the following statements are true?
BGP allows you to use the filter-policy acl-number import command to filter received routes. The value of ad-number ranges from 2000 to 3999.
O TRUE
O FALSE
Network administrator A wants to use A, CL to match only the four routing entries 1 and 3.57 in the figure. Ask the network administrator
A at least how many A, CL rules do you need to configure?
The correct description for the configuration on this switch is:
[Huawei]dhcp enable
[Huawei]interface Vlanif 100 [Huawei-Vlanif 100]dhcp select relay
The partial configuration of R1 is as follows. Which statement about OSPF on R1 is correct?
ospf 1 router-id 172.16.1 J
area 0.0.0.0
network 10.1.12.1 0.0.0.0
network 10.1.13.1 OQO.O
network 172 J 6.1.1 0.0.0.0
After the cutover acceptance is completeD. what work still needs to be performed in the closing stage?
On the network shown in the figure, the DHCP server function is enabled on GEO/0/0 of R2, and the address pool is an interface address pool. When GEO/0/0 and GEO/0/1 of R1 function as DHCP clients, only one interface can obtain an IP address by default.
On the OSPFv3 network shown in the figure, OSPFv3 parameters use default values. The LSDB is checked on one of the devices. The router IDs of R1, R3, and R4 are 10.0.1.1, 10.0.3.3, and 10.0.4.4, respectively. The Origin Router part of some LSAs is hidden. Complete this part. (Tokens can be reused.)
The Discovery message of LDP is used for neighbor discovery, and LDP has different discovery mechanisms when discovering neighbors. The following statement about the Discovery message in the basic discovery mechanism is correct
Deployment in a small and medium-sized networkOSPF,When viewing the routing table of a device, it is found that there are only directly connected routes.
It is not possible for the operation to cause the fault?
On the OSPF network shown in the figure, the cost values of links are marked, and OSPF IP FRR is enabled on R1. Which of the following statements is false?
A campus deploys both IPv4 and IPv6 networks for service testing, and runs IS-IS to realize network interconnection. The IS-IS routing protocol has good scalability and is widely used in the existing network. Which of the following statements is true about IS-IS scalability?
If the temperature of the device is found to be too high, it can be concluded that the fan has failed
In the MPLS network, there are different operation types for labels, among which the meaning of the "pop" action is:
A router runs OSPF, and the output information is shown in the figure. Which of the following statements is correct?
A,ShouldLSAis of typeAS-external-LSA
B. ShouldLSAThe described destination network is10.0.23.0/24
C. in the pictureLSAis generated by this router
D. This device isA, BR
In the multi-level RR scenario, a large number of secondary RRs will be connected to the primary RR, which may lead to BGP of the primary RR. The routing table overflows, what method can be used to reduce the risk of overflowing the routing table of the advanced RR BGP?
As shown in the figure, configure a backhaul summary route 10.0.0.0/24 on the border route RT1. next hop
to RT2. At the same time, the default route to the external network is configured. At this point, a routing black hole will appear. The following is about routing
Is the black hole statement correct? (multiple choice)
Which of the following is the least likely cause of a VRRP backup group dual-active failure?
Network administrator A wants to use AS-Path Filter to match the BGP routing attribute AS_PATH[100200300]. Network administrator A sorts out the four configurations in the figure. Which of the following configurations can meet the requirements of network administrator A?
When a fault occurs, the fault can be classified to reduce the scope of fault location. Which of the following is not an interface configuration fault?
BGP4+ carries the next hop address of the IPv6 route through the Next Hop attribute in the Update packet. (Moved into Attribute 14)
Configuring DHCP Snooping can be used to prevent imitator attacks, so the configuration process needs to include the following
What are the steps?
Which of the following is included in the routine collection of basic equipment information?
The OSPF protocol is run between CE and PE, when CE1 advertises the route of its site to CE2. Which of the following descriptions is incorrect?
A campus deploys OSPF to implement network interworking. The LSDB of R2 is shown in the figure. From this LSDB. it is possible to
What information was obtained?
As shown in the figure, 0SPF is enabled on all interfaces of the router. The cost value of the link is marked in the figure, R2's
LoogbackO is advertised by mouth in area 0, then in In area 1, both R2 and R3 transmit the routing information of 10.0.2.2/32 in the form of Typae3 LSA.
Both VLAN aggregation and MUX VLAN are deployed on the enterprise network shown in the figure, and all switch interfaces connected to terminals are access interfaces. Given this, match PCI to PC4 with the hosts or servers that they can access on the network. (Note: A host cannot be matched with itself. For example, PCI cannot match PCI.) (Tokens can be reused.)
In PLSVPN, in order to distinguish IPv4 prefixes that use the same address space, the value of R0 is added to the IPv4 address. The correct description of the following options is:
If the display ospfv3 peer verbose command is run to check OSPFv3 neighbor information, the command output contains information such as the peer router ID, global unicast address of the peer interface, and neighbor status.
The IS-IS neighbor relationship between R3 and R1 is not established. According to the information in this figure, what is the possible reason?
Which of the following are documents that need to be handed over as part of the wrap-up of a structured network troubleshooting process
files?
A, Maintenance suggestions to avoid this fault
B. Troubleshooting Summary Report
C. Troubleshooting Procedure Documentation
D. slightly
On a BGP/MPLS IP VPN network, which of the following are carried when a PE advertises VPNv4 routes?
After port isolation is configured on a switch, hosts in the same VLAN cannot communicate with each other at Layer 2 or Layer 3 by default.
In intra-domain MPLS VPN networks, data packets will be encapsulated with two layers of MPLS when they enter the public network and are forwarded.
label, the description of the two-layer label in the following options is wrong
On the network shown in the figure, VRRP is configured on Rl and R2, and the virtual IP address is 10.0.12.254. After the configuration is complete, the network engineer checks the VRRP status on R1 and R2, and finds that both devices are in the Master state. Which of the following is not a possible cause of this problem?
On the OSPF network shown in the figure, a network engineer finds that R1 and R2 have the same router ID, and both have imported default routes (with the default-route-advertise always command configured). Given this, which of the following statements is false?
As shown in the figure, SF is enabled on all interfaces of the router, the cost value of the link is marked in the figure, and the Loopback0 interface of R2 is advertised in area 1, then the cost value of R1 reaching 10.0.2.2/32 is?
[According to this picture, Peimen can judge?
cR3>display ipv6 routing-table protocol isis
OSPF is deployed in a campus to achieve network interworking, and OSPF is also enabled on the GEO/0/2 interface of R3. Area1 is deployed as an NSSA area, and the device addresses are shown in the figure. An engineer configures a static route on R3 to access the loopback interface address of R4, and imports the static route in the 0SPF process. At this point, in the Type5 LSA received by R1, the forwarding address (FA) is____. (Note: Please fill in the IP address without mask)
As shown in the figure, all routers run OSPF, because R3 is in the backbone area, so in the LSDB of R3 There are no three types of LSAO
Network administrator A wants to use A, CL to match specific routing entries. Which of the following routing entries will be matched by the A, CL rules in the figure?
acl number 2000
rule 10 permit source 10.0.0.0 0.0.6.0
To speed up the detection of link failures in an IS-IS network, you can associate IS-IS with BFD.
Regarding multi-instance CE (Mlulti-VPN-Instance CE, MCE), which of the following descriptions is wrong?
As shown in the figure, on the R1 router, network administrator A sends the routing entry to R2 through the routing policy
After modifying the Local Preference value, you can control the path of traffic leaving the AS100
IGP converges faster than BGP, which may cause network traffic loss. By enabling the OSPF and BGP linkage feature of the device, the device can keep the OSPF and BGP linkage during the set linkage time.____The router makes the link metric value in the LSA advertised to be the maximum value, so as to inform other OSPF devices not to use this router to forward data, so as to avoid traffic loss. (Note: If English letters are involved, all uppercase)
On a stable network that requires fast route convergence, you can change the value of the interval at which OSPF LSAs are updated to 0 so that topology or route changes can be immediately advertised on the network through LSAs, which speeds up route convergence.
After the VLAN-based MA, C address flapping detection function is configured, if the MA, C address flaps. The interface can be configured to perform actions according to requirements. Which of the following is NOT a configurable action?
The routing policy tools that can be used by BGP mainly include Filter-policy and Route-policy. Fiter-policy can only filter routes, and Route-policy can only modify routes.
An engineer uses two routers to test IPv6 services, and runs 0SPFv3 to implement IPv6 network interconnection. R1 is required to be able to access the loopback interface address of R2. The engineer checked the OSPFv3 routing table entry of R1, as shown in the figure, and found that there was no route to the loopback interface address of R2. Which of the following reasons could not be the cause?
IPSG is a source IP address filtering technology based on Layer 3 interfaces. It prevents malicious hosts from forging authorized hosts' IP addresses to access authorized network resources.
In the same environment, engineers A and B execute the tracert command. The destination addresses are the same, but the paths are different. What are the possible reasons?
To support the processing and calculation of IPv6 routes, IS-IS adds a new NLPID to TLV 129. The NLPID is an 8-bit field that identifies network layer protocol packets. Which of the following is the NLPID of IPv6?
On the OSPFv3 network shown in the figure, area 1 is a stub area, area 2 is a common area, and area 3 is an NSSA. Which of the following LSAs is displayed only in area 2?
Which of the following reasons may cause the hosts in the same VLAN of the LAN to fail to communicate with each other?
Part of the configuration of R1 is as follows. Which statement about OSPF on R1 is correct?
ospf 1 router-id 172.16.1.1
area 0.000
network 10.1.12.1 0.0.0.0
network 10.1"3"0.0.0.0
network 172.16/1 1 0.0.0.0
ospf 2 vpn-instance tt
area QQO.O
network 10J J 1 0.000
During the daily troubleshooting process, engineers may need to view some alarm information of the device. Run the terminal command to enable the terminal to display the debugging/log/alarm information sent by the information center.
Match the alarm severity to the severity of the fault and countermeasures
C. Critical", Major-2, Minor-3, Warning-4 A
D. Critical-3, Major-2, Minor-1, Warning-4
The configuration shown is performed on R2 to filter all incoming routes. Suppose there is a BGP route with the AS_Path attribute of [100200300400] on R1 that needs to be sent to R2. Please help the network administrator to adjust the AS order in the AS_Path attribute of the route on R1 to ensure that the route entry will not be filtered by the routing policy of R2____, ____, ____, ____.
100 This space corresponds to the [A] space in the routing policy
200 This space corresponds to the [B] space in the routing policy
300 This space corresponds to the [C] space in the routing policy
400 This space corresponds to the [D] space in the routing policy
An engineer uses two routers to test IPv6 services, and simulates the interconnection between the headquarters and branches by running BGP4+. The logical topology of the network is shown in the figure. Regarding the transmission of IPv6 routes between the two devices, which of the following Is a statement wrong?
According to this figure, which statement is correct about the IPv6 routing information calculated by the R4 router through IS-IS?
IS-IS is a link-state routing protocol that uses the SPF algorithm for route calculation. As shown in the figure, a campus deploys both IPv4 and IPv6 and runs IS-IS to achieve network interconnection. R2 only supports IPv4. Which of the following statements is true about the topology calculation of this network?
The figure shows the file information on R2. When a network engineer runs the dir | exclude 1 command to view the file information, which of the following files will be displayed?
A campus has deployed IPv6 for service testing. There are 4 routers in the network, running 0SPFv3 to implement IPv6 network interconnection. As shown in the figure, an engineer checked the LSDB of R2 and intercepted one of the Link-LSAs. Which of the following statements is true about the description of this LSA?
Which of the following regular expressions can match only BGP routes that pass through AS200 and then through AS300
eyes?
When deploying MPLS/BGP IP VPN, which of the following descriptions is wrong about using BGP to exchange routing information between PEs and CEs?
The rules of RR advertising routes violate the rules of IBGP split horizon, so it may cause loops in the AS
road. Which routing attributes does RR use to prevent loops?
R1 executes the operation ping -a lO.l.Ll 10.5.16.2, what is the meaning of this command?
Which of the following descriptions is correct about configuring static LSPs in MPLS networks?
In the DU label distribution mode, if the Liberal retention mode is adopted, the device will retain the labels distributed by all LDP peers, regardless of whether the LDP peer is the optimal next hop to the destination network segment.
Configure ipv6 preference in IS-IS protocol view. The function of this command is to configure the priority of IPv6 routes generated by IS-Is protocol.
TESTED 18 Jan 2025
