EMT Practice Test

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A. Choice A

B. Choice B

C. Choice C

D. Choice D

E. Choice E

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Question List

Question1: In the IS-IS network as shown in the figure, each router is configured as follows.
RTA-isis-1]cost-ste compatible
RTB-isis-1]cost-ste wide-compatible
RTC-isis-1]cost-ste narrow-compatible
Then the link cost between each other can be calculated correctly is _______.

Question2: A local area network has been running for 2 years (17,520 hours), and it has been out of service for 8 hours due to equipment failure. After the network was expanded and new equipment was added, it ran for another year (8,760 hours), and was out of service for another 3 hours due to a software failure.
Regarding the availability of this network (Availabilit), which of the following statements are correct?

Question3: In the IS-IS network as shown in the figure, the verification part of each router is configured as follows
RTA-Serial2/0]isis authentication-mode md5 h3c
RTB-isis-1]area-authentication-mode md5 h3c
RTC-isis-1]domain-authentication-mode md5 h3c
Then RTA and RTB______ synchronize LSDB, and RTB and RTC______ synchronize LSDB.

Question4: Which of the following descriptions about the address prefix list is correct is _______.

Question5: H In the OSPF protocol, when the interface network type is NBMA (non-broadcast multiple access), the default Hello interval and neighbor failure time are respectively ______.

Question6: For the IS-IS protocol message interaction process, the following description is correct.

Question7: As shown in the figure, RTA and RTB establish an IS-IS adjacency relationship on a P2P type link. After RTB sends LSP_N to RTA, it sends LSP_N to RTA after a period of time. RTA then sends ______ to RTB. From the above, it can be seen that ______ is lost.

Question8: In the IS-IS network as shown in the figure, RTA is configured with route aggregation.
So which of the following routes are included in the RTC IS-IS routing table?

Question9: In the network shown in the figure, the default next hop of RTA is RTC, and the PBR configuration is as follows:
polic-based-route pbr_a permit node 10
if-match acl 3000
appldefault output-interface serial 2/0
polic-based-route pbr_a dennode 20
According to the above configuration, how will the data stream matching Acl 3000 on RTA be forwarded?

Question10: In the IS-IS network as shown in the figure, RTA, RTC, RTD, and RTE establish a Level-2 adjacency relationship with each other; RTB establishes a Level-1 adjacency relationship with RTA, RTC. After the routing of each router is stable, when RTB accesses 192.168.14.1, it chooses the next hop as _________.
If RTA and RTC are added the following configuration at this time:
RTA-isis-1]import-route isis level-2 into level-1
RTC-isis-1]import-route isis level-2 into level-1
Then RTB selects the next hop as ________ when accessing 192.168.14.1.

Question11: The routing table on a H3C router is displayed as follows:
H3C]disp ip rout
Routing Table: public net
Destination/Mask Protocol Pre Cost Nexthop Interface
10.0.0.0/8 OSPF 10 2 20.1.1.2 Ethernet0/0
20.1.1.0/30 DIRECT 0 0 20.1.1.1 Ethernet0/0
20.1.1.1/32 DIRECT 0 0 127.0.0.1 InLoopBack0
127.0.0.0/8 DIRECT 0 0 127.0.0.1 InLoopBack0
127.0.0.1/32 DIRECT 0 0 127.0.0.1 InLoopBack0
172.16.1.0/24 DIRECT 0 0 172.16.1.1 LoopBack1
172.16.1.1/32 DIRECT 0 0 127.0.0.1 InLoopBack0
192.168.1.0/24 DIRECT 0 0 192.168.1. LoopBack2
192.168.1.1/32 DIRECT 0 0 127.0.0.1 InLoopBack0
At the same time, configure the following commands on the router:
bgp 65400
network 172.16.0.0
network 192.168.1.0
network 10.0.0.0
Based on the above information, which of the following BGP routes should be in the router's BGP routing table:

Question12: In the BGP priority process, each attribute has a different priority.
Regarding the priority of these attributes, which of the following arrangements is correct?

Question13: In the topology shown in the figure, perform the following configurations on RTA and RTC respectively:
RTA-ospf-1] area 1
RTA-ospf-1-area-0.0.0.1] authentication-mode simple
RTA] interface GigabitEthernet0/0
RTA-GigabitEthernet0/0] ospf authentication-mode simple plain 12345
RTC-ospf-1] area 0
RTC-ospf-1-area-0.0.0.0] authentication-mode simple
RTC] interface GigabitEthernet0/0
RTC-GigabitEthernet0/0] ospf authentication-mode simple plain 54321
If RTB needs to establish neighbor relationships with RTA and RTC respectively, which of the following configurations needs to be performed on RTB?

Question14: The PBR configuration of a router is known as follows:
polic-based-route pbr_a permit node 10
if-match acl 3000
if-match packet-length 101 1000
apploutput-interface serial 2/0
Assuming that the strategy has been successfully applied, how will the relevant data flow on the router be forwarded?

Question15: In the topology shown in the figure, perform the following configuration in RTA and RTB respectively:
RTA-ospf-1-area-0.0.0.1]network 192.168.0.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.1.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.2.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.3.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.4.0 0.0.0.255
RTB] acl number 2000
RTB-acl-basic-2000] rule 0 permit source 192.168.1.0 0.0.0.255
RTB-ospf-1] filter-polic2000 import
Then the possible routes in the RTC routing table are _____

Question16: r Regarding the stub area in the OSPF protocol, the following statement is correct: _______

Question17: As shown in the figure, RTA is the border router of OSPF routing and BGP routing domain. If a BGP route with a MED value of 100 is imported into OSPF on RTA, then by default, RTB learns the COST value of the route ______.

Question18: OSPF TotallStub area may be injected with ______ type LSA.

Question19: In the OSI network, Level-0 routing exists in _______.

Question20: The following belong to the OSPF special area ______

Question21: ______ Use the shortest path first (SPF) algorithm.

Question22: As shown in the picture.

The figure is an OSI routing network, the route between RTC and RTE in the figure should be _______ route.

Question23: In the IS-IS network as shown in the figure, when the routing is stable, change the RTB and RTD to 192.168.224.0/24, then IS-IS topology ______, IP routing information ______.

Question24: In the topology shown in the figure, execute the following commands on the RTA router:
RTA-ospf-1] default-route-advertise alwa
RTA] ip route-static 0.0.0.0 0.0.0.0 192.168.0.2
The default route cannot be observed in the routing table of the RTC router. The possible reason is ______

Question25: As shown in the figure, RTA, RTB, and RTC run OSPF, and the process number is 100; OSPF process 200 runs between RTA, RTB, and RTD. The cost of all interconnected links is set to 10. Set the external route priority of OSPF 100 on RTA and RTB to 190, and import an external route 172.16.1.0/24 into OSPF 100 on RTC. RTA is set to redistribute OSPF100 routes to OSPF200, and RTB is set to redistribute OSPF200 routes to OSPF100. After the operation is stable, suppose that the external route 172.16.1.0/24 imported on the RTC disappears suddenly.
According to the above scenario analysis, the following description is incorrect.

Question26: There are 4 routes 10.0.0.0/24, 10.0.1.0/24, 10.0.2.0/24, and 10.0.3.0/24 in the routing table.
For route aggregation, the correct route after aggregation is _________.

Question27: The administrator wants to configure the OSPF routing priority value on the MSR router as 60. Which of the following commands is correct?

Question28: In the topology shown in the figure, the following configurations are performed on RTA and RTB respectively:
RTA]ospf 1
RTA-ospf-1]area 1
RTA-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB]ospf 1
RTB-ospf-1]area 1
RTB-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1]area 0
RTB-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
If you need to configure area 2 as a TotalStub area, how should it be configured on RTC and RTD?

Question29: Which of the following statements about BGP synchronization are wrong?

Question30: Regarding the default metric value of different routing protocols when importing routes, the following description is correct: __________

Question32: OSPF TotallNSSA area will definitely not inject ______ type LSA.

Question33: Among the following routing protocols, the one that belongs to the IGP is ______, and the one that uses the path vector algorithm is ______.

Question34: Among the following features that can enhance the security of OSPF are _______

Question35: PBR configuration on a router is as follows.
polic-based-route pbr_a permit node 10
if-match acl 3000
apploutput-interface serial 2/0
polic-based-route pbr_a dennode 20
if-match acl 3000
Assuming that the strategy has been successfully applied, how will the data stream configured with Acl3000 on the router be forwarded?

Question36: The following statement about IToIP is wrong is _______.

Question37: Execute displaip polic-based-route statistic interface ethernet1/0 on the router, and the output is as follows:
Interface Ethernet1/0 policbased routing statistics information:
polic-based-route: aaa
permit node 5
apploutput-interface serial1/0
Denied: 0, Forwarded: 0
Total denied: 0, forwarded: 0
According to the above output, we know ______.

Question38: In the IS-IS network as shown in the figure, the RTA, RTB, and RTC configurations are as follows:
RTA]isis
RTA-isis-1]is-level level-1
RTA-isis-1]network-entit01.1111.1111.1111.00
RTA-isis-1]interface serial 2/0
RTA-Serial2/0]isis enable 1
RTB]isis
RTB-isis-1]is-level level-1
RTB-isis-1]network-entit01.2222.2222.2222.00
RTB-isis-1]interface serial 1/0
RTB-Serial1/0]isis enable 1
RTB-Serial1/0]interface Ethernet 0/0
RTB-Ethernet0/0]isis enable 1
RTC]isis
RTC-isis-1]is-level level-1
RTC-isis-1]network-entit01.3333.3333.3333.00
RTC-isis-1]interface Ethernet 0/0
RTC-Ethernet0/0]isis enable 1
RTC-Ethernet0/0]interface Ethernet 0/1
RTC-Ethernet0/1]isis enable 1
After the routes of each router are stable, the cost of IS-IS route 192.168.3.0/24 on RTA is ______.

Question39: IS-IS can support network layer protocols such as _______.

Question40: b In the BGP protocol message, the function of the Update message is ______

Question41: As shown in the figure, 4 routers are connected to an Ethernet link. The router interface is a broadcast network type, and the DIS election is carried out and an adjacency relationship is established. If the RTA restarts at this time, after the restart is completed, the DIS on this link is ______.

Question42: Run the command on the router and its display information is as follows:
<RTA>displaisis brief
ISIS(1) Protocol Brief Information:
network-entit:
01.1111.1111.1111.00
is-level: level-1-2
cost-ste: narrow
preference: 15
Lsp-length receive: 1497
Lsp-length originate: level-1 1476
level-2 1476
maximum imported routes number: 10000
Timers:
lsp-max-age: 1200
lsp-refresh: 900
Interval between SPFs: 10
From the above information, you can know RTA______.

Question43: RTA and RTB run the BGP routing protocol, and there is a static default route on RTA at the same time.
The correct way to import the default route in RTA into BGP is ______

Question44: In the IS-IS network as shown in the figure, after the routing of each router is stable, the IS-IS Level-1 routing in the IS-IS LSDB of RTE has ______.

Question45: Regarding the NSAP address, which of the following descriptions are correct?

Question46: As shown in the figure, 4 routers are connected to an Ethernet link. The router interface is a broadcast network type, and the DIS election has been carried out and an adjacency relationship has been established.

If the RTA restarts at this time, after the restart is completed, the DIS on this link is ______

Question47: Run the command and display information on the router as follows:
<RTA>displaisis brief
ISIS(1) Protocol Brief Information:
network-entit:
01.1111.1111.1111.00
is-level: level-1-2
cost-ste: narrow
preference: 15
Lsp-length receive: 1497
Lsp-length originate: level-1 1476
level-2 1476
maximum imported routes number: 10000
Timers:
lsp-max-age: 1200
lsp-refresh: 900
Interval between SPFs: 10
From the above information, you can know RTA______.

Question48: Which of the following commands can be used to view all the configured and enabled PBR information?

Question49: The PBR configuration of a router is known as follows:
polic-based-route pbr_a permit node 10
if-match acl 3000
if-match packet-length 101 1000
apploutput-interface serial 2/0
Assuming that the strategy has been successfully applied, how will the relevant data flow on the router be forwarded?

Question50: The default priority value of OSPF external routing is ________.

Question51: In the network as shown in the figure, no dynamic routing protocol is enabled between all routers, and only static routes can be configured. Then the correct configuration on RTE should be _________.

Question52: After the various routers in the figure have established IS-IS neighbor relationships, the routers that have sent CSNP messages have ______.

Question53: In the topology shown in the figure, the following configurations are performed on RTA, RTB, and RTC:
RTA]ospf 1
RTA-ospf-1]area 1
RTA-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB]ospf 1
RTB-ospf-1]area 1
RTB-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1]area 0
RTB-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTC]ospf 1
RTC-ospf-1]area 0
RTC-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTC-ospf-1-area-0.0.0.0]area 2
RTC-ospf-1-area-0.0.0.2]stub
RTC-ospf-1-area-0.0.0.2]network 30.0.0.0 0.0.0.255
How to configure if RTD can learn route 10.0.0.0/24?

Question54: The routers RTA and RTB are located in the same autonomous system. The BGP related configuration is as follows, then RTA and RTB are _____.
RTA]
bgp 100
timer keepalive 10 hold 30
peerRTB as-number 100
[RTB]
bgp 100
timer keepalive 30 hold 90
peerRTA as-number 100

Question55: Regarding the Stub area and NSSA area of the OSPF protocol, the following statements are incorrect: _______

Question56: Which of the following are the characteristics of the link state routing protocol? (Choose one or more)

Question57: In the topology shown in the figure, the following configurations are performed on RTA and RTB respectively:
RTA]ospf 1
RTA-ospf-1]area 1
RTA-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB]ospf 1
RTB-ospf-1]area 1
RTB-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1]area 0
RTB-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
If you need to configure area 2 as an NSSA area, how should you configure it on RTC and RTD?

Question58: Regarding the import-route command, which of the following statements are correct?

Question59: In the topology shown in the figure, the following configurations are performed on RTA and RTB respectively:
RTA-ospf-1-area-0.0.0.1]network 192.168.0.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.1.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.2.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.3.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.4.0 0.0.0.255 It is now required that the RTC must not learn the routes configured in the above RTA. What configurations can be performed on the router?

Question60: In the topology shown in the figure, by executing the import-route direct command on RTA, inject 192.168.0.0/24, 192.168.1.0/24, 192.168.2.0/24, 192.168.3.0/24 and 192.168.4.0/ 24 These five routes, and perform the following configuration on RTA, RTB and RTC respectively:
RTA]ospf 1
RTA-ospf-1]area 1
RTA-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]nssa
RTA-ospf-1]asbr-summar192.168.0.0 255.255.192.0 not-advertise
RTA-ospf-1]import direct
RTB]ospf 1
RTB-ospf-1]area 1
RTB-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1]nssa default-route-advertise
RTB-ospf-1-area-0.0.0.1]area 0
RTB-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTB-ospf-1]import direct
RTC]ospf 1
RTC-ospf-1]area 0
RTC-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
RTC-ospf-1-area-0.0.0.0] network 20.0.0.0 0.0.0.255, the impossible route in the RTC routing table is _____

Question61: Regarding the DR/BDR election principles in the OSPF protocol, the following statement is wrong.

Question62: In the topology shown in the figure, the following configurations are performed on RTA, RTB, RTC and RTD:
RTA-LoopBack0] ip address 1.1.1.1 255.255.255.255
RTA]ospf 1
RTA-ospf-1]area 1
RTA-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTA-ospf-1]import-route direct
RTB-LoopBack0] ip address 2.2.2.2 255.255.255.255
RTB]ospf 1
RTB-ospf-1]area 1
RTB-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1]area 0
RTB-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTB-ospf-1]import-route direct
RTC-LoopBack0] ip address 3.3.3.3 255.255.255.255
RTC]ospf 1
RTC-ospf-1]area 0
RTC-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
RTC-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTC-ospf-1-area-0.0.0.0]area 2
RTC-ospf-1-area-0.0.0.2]stub
RTC-ospf-1-area-0.0.0.2]network 30.0.0.0 0.0.0.255
RTD-LoopBack0] ip address 4.4.4.4 255.255.255.255
RTD]ospf 1
RTD-ospf-1]area 2
RTD-ospf-1-area-0.0.0.2]network 4.4.4.4 0.0.0.0
RTD-ospf-1-area-0.0.0.2]network 30.0.0.0 0.0.0.255
RTD-ospf-1-area-0.0.0.2]stub
Which of the following routes may exist in the RTD routing table ______.

Question63: The role of IP Internal ReachabilitInformation CLV in IS-IS packets is ______.

Question64: The following statements about SOA and IToIP are correct: _______.

Question65: Regarding filter-polic filtering OSPF routes, which of the following statements are correct?

Question66: In the following NSAP, the NET address that can be used as an integrated IS-IS is _______.

Question67: Integrated IS-IS supports the ________ protocol.

Question68: In the topology shown in the figure, execute the following commands on the RTA router:
RTA-ospf-1] default-route-advertise
RTA] ip route-static 0.0.0.0 0.0.0.0 192.168.0.2
The default route cannot be observed in the routing table of the RTC router. The possible reason is ______

Question69: Which of the following descriptions about routing filtering are correct?

Question70: The RIP protocol is enabled on a router with a priority of 10; the OSPF protocol is also enabled with a priority of 100. If two protocols have learned the route 10.0.0.0/8 at the same time, the metric values are 1 (hop count) and 100 (cost value), and the next hop is 1.0.0.1 and 1.0.0.2 respectively.
After the router receives a packet with a destination address of 10.0.0.1, how to deal with it?

Question72: Configure the silent interface on the router so that the router does not send OSPF protocol messages. The command is _______.

Question73: As shown in the figure, RTA, RTB, and RTC run OSPF, and the process number is 100; OSPF process 200 runs between RTA, RTB, and RTD. The cost of all interconnected links is set to 10. Set the external route priority of OSPF 100 on RTA and RTB to 190, and import an external route 172.16.1.0/24 into OSPF 100 on RTC. RTA is set to redistribute OSPF100 routes to OSPF200, and RTB is set to redistribute OSPF200 routes to OSPF100. After the operation is stable, suppose that the external route 172.16.1.0/24 imported on the RTC disappears suddenly.
Based on the above scenario analysis, the correct description below is ______.

Question74: After executing the displaospf peer command on the MSR router RTA, the router output is as follows:

It can be judged from the above output that ________.

Question75: In the IS-IS network as shown in the figure, when the routing is stable, the link between RTB and RTD is increased from the address network segment 192.168.224.0/24, then IS-IS topology ______, IP routing information ______ .

Question76: In the PBR configuration, which of the following actions cannot be performed by the appl clause?

Question77: As shown in the figure, the MSR router at the headquarters is connected to the branch through two 100Mbps Ethernet links. To make full use of the existing bandwidth resources, which of the following routing schemes is the best?

Question78: There are 4 routes in the routing table 192.168.0.0/24, 192.168.1.0/24, 192.168.2.0/24, 192.168.3.0/24.
For route aggregation, the correct route after aggregation is __________.

Question79: M In the network shown in the figure, the default next hop RTC of RTA, and the PBR configuration on RTA is as follows:
polic-based-route pbr_a permit node 10
if-match packet-length 64 100
applip-address next-hop 11.0.0.2
if-match packet-length 101 1000
applip-address next-hop 12.0.0.2
polic-based-route pbr_a dennode 20
Assuming that the strategy has been successfully applied, how will the data stream on RTA be forwarded?

Question80: In the network shown in the figure, the BGP routing learning between the routers is normal, and the BGP routing attributes all take default values.
After the route 8.0.0.0 is imported into BGP on RTA, if the next hop of route 8.0.0.0 on RTD is to point to RTB, the following adjustment methods are feasible again.

Question81: As shown in the figure, RTA and RTB act as border routers between the BGP routing domain and the OSPF routing domain.
In order to realize the routing intercommunication between the BGP routing domain and the OSPF routing domain, the following route distribution strategy is not feasible: _______

Question82: Regarding the NSAP area address in IS-IS, the following statement is correct.

Question83: Z router uses the Ethernet MAC address to generate the NET address of the IS-IS process. The disadvantages are ________.

Question84: E As shown in the figure, RTB and RTC each learn EBGP route N from RTD, RTB is missing LOCAL_PREF is set to 200, RTA and RTB, RTC establish IBGP neighbor relationship through loopback, RTA routing table, only N, RTB It is directly routed to the loopback of RTC and RTA itself. If RTB goes down due to a power failure, on RTA, can route N be switched to RTC immediately?

Question85: The topology of a certain network is complex, and there are multiple paths between the core and the branches. In order to control the routing between the core and the branch, effectively use bandwidth resources, and reduce maintenance costs, which of the following measures is the best?

Question86: Among the following types of LSAs, the ones allowed in the backbone area are _________

Question87: Two MSR routers MSR-1 and MSR-2 are interconnected through the 172.16.16.0/20 network segment. Now it is necessary to configure the OSPF protocol on the router MSR-1 to establish the adjacency relationship with MSR-2 normally. Which of the following configurations is not feasible? (Choose one or more) (Choose one or more)

Question88: In the IS-IS network as shown in the figure, RTA and RTB are configured as follows:
RTA]isis
RTA-isis-1]is-level level-1
RTA-isis-1]network-entit01.1111.1111.1111.00
RTA-isis-1]interface serial 2/0
RTA-Serial2/0]isis enable 1
RTB]isis
RTB-isis-1]network-entit01.2222.2222.2222.00
RTB-isis-1]interface serial 1/0
RTB-Serial1/0]isis enable 1
RTB-Serial1/0]isis circuit-level level-1
Then between RTA and RTB ______

Question89: The topology of a certain network is complex, and there are multiple paths between the core and the branches. In order to control the routing between the core and the branch, effectively use bandwidth resources, and reduce maintenance costs, which of the following measures is the best?

Question90: As shown in the figure, RTA, RTB, and RTC are located in AS100, AS200, and AS300 respectively. Users do not want AS 100 to transfer the traffic between AS200 and AS300. The best way to achieve this requirement is:

Question91: For the NSEL field in the NSAP address, the following description is correct.

Question92: IS-IS protocol messages are divided into IIH, CSNP, PSNP and LSP. These four message classifications are identified by ______.

Question93: In the OSPF broadcast network, there are 4 routers RTA, RTB, RTC, and RTD in the same network segment. The priorities are 2, 2, 1, and 2, and the router IDs are 172.16.1.1, 172.16.2.1, 172.16.3.1 and 172.16.4.1.
If the OSPF protocol is activated on these 4 routers at the same time, the DR selected by OSPF is _____.

Question94: In the topology shown in the figure, by executing the import-route direct command on RTA, inject 192.168.0.0/24, 192.168.1.0/24, 192.168.2.0/24, 192.168.3.0/24 and 192.168.4.0/ 24 These five routes, and perform the following configuration on RTA, RTB and RTC respectively:
RTA]ospf 1
RTA-ospf-1]area 1
RTA-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 1.1.1.1 0.0.0.0
RTA-ospf-1-area-0.0.0.1]nssa
RTA-ospf-1]asbr-summar192.168.0.0 255.255.224.0 not -advertise
RTB]ospf 1
RTB-ospf-1]area 1
RTB-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1]nssa default-route-advertise
RTB-ospf-1-area-0.0.0.1]area 0
RTB-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
RTB-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTC]ospf 1
RTC-ospf-1]area 0
RTC-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
RTC-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
Then the impossible routes in the RTC routing table are _____

Question95: In the network as shown in the figure, the correct IP addresses have been configured on RTA, RTB and RTC.
Execute the following commands on the three routers RTA, RTB and RTC:
RTA-Serial5/0] ospf dr-priorit100
RTA] ospf 1 router-id 1.1.1.1
RTA-ospf-1] area 0
RTA-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255
RTB] ospf 1 router-id 2.2.2.2RTB-ospf-1] area 0
RTB-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255
RTC] ospf 1 router-id 3.3.3.3 RTC-ospf-1] area 0
RTC-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255
Judging from the above configuration, ________

Question96: In the OSPF protocol, when the interface network type is P2P (point-to-point), the default Hello time interval and neighbor failure time are respectively ______.

Question97: In the IS-IS network as shown in the figure, after the routes of each router are stable, the IS-IS Level-1 routes learned by RTE through neighbors have ______.

Question98: Regarding the Stub area and TotalStub area of the OSPF protocol, the following statement is wrong: ______

Question99: Run the command and its display information on the router as follows:
<RTC>displisis lsdb level-2 verbose
Database information for ISIS(1)
--------------------------------
Level-2 Link State Database
LSPID Se Num Checksum Holdtime Length ATT/P/OL
-------------------------------------------------- -----------------------------
1111.1111.1111.00-00 0x00000084 0xb5cc 511 62 0/0/0
SOURCE 1111.1111.1111.00
NLPID IPV4
AREA ADDR 01
INTF ADDR 10.1.2.1
INTF ADDR 10.1.3.1
INTF ADDR 172.16.3.1
NBR ID 3333.3333.3333.00 COST: 10
1111.1111.1111.00-01 0x0000009f 0xd4f3 1195 101 0/0/0
SOURCE 1111.1111.1111.00
IP-Internal 10.2.4.0 255.255.255.252 COST: 20
IP-Internal 192.168.18.0 255.255.255.0 COST: 20
IP-Internal 10.1.2.0 255.255.255.252 COST: 10
IP-Internal 10.1.3.0 255.255.255.252 COST: 10
IP-Internal 172.16.3.1 255.255.255.255 COST: 0
IP-Internal 172.16.0.0 255.255.252.0 COST: 10
3333.3333.3333.00-00* 0x0000007c 0x2425 640 58 0/0/0
SOURCE 3333.3333.3333.00
NLPID IPV4
AREA ADDR 02
INTF ADDR 10.1.3.2
INTF ADDR 10.3.4.1
NBR ID 1111.1111.1111.00 COST: 10
3333.3333.3333.00-01* 0x00000099 0x342d 640 77 0/0/0
SOURCE 3333.3333.3333.00
IP-Internal 10.1.3.0 255.255.255.252 COST: 10
IP-Internal 10.3.4.0 255.255.255.252 COST: 10
IP-Internal 10.2.4.0 255.255.255.252 COST: 20
IP-Internal 172.16.4.1 255.255.255.255 COST: 10
*-Self LSP, +-Self LSP(Extended), ATT-Attached, P-Partition, OL-Overload
From the above information, you can know _________.

Question100: Which of the following commands is used to reset PBR statistics?

Question101: Which of the following methods of routing filtering are feasible?

Question102: The backbone network router in IS-IS includes _________.

Question103: In the following BGP networking applications, EBGP neighbor relationships are established between the three routers. RTA receives Internet routes from RTB and RTC at the same time, so that it can reach the Internet 192.10.0.0/ through two links. 16.
The main configurations of RTA, RTB, and RTC are as follows:
RTA]
bgp 700
network 190.10.0.0 mask 255.255.0.0
undo snchronization
group as500 external
peer as500 as-path-acl 1 export
peer 201.1.1.1 group as500 as-number 500
group as600 external
peer as600 as-path-acl 1 export
peer 160.1.1.1 group as600 as-number 600
ip as-path-acl 1 permit ^$
RTB]
bgp 500
network 192.10.0.0 mask 255.255.0.0
undo snchronization
group as700 external
peer as700 route-policsetmed export
peer 201.1.1.2 group as700 as-number 700
route-policsetmed permit node 10
applcost 50
RTC]
bgp 600
network 192.10.0.0 mask 255.255.0.0
undo snchronization
group as700 external
peer as700 route-policsetmed export
peer 160.1.1.2 group as700 as-number 700
route-policsetmed permit node 10
applcost 100
According to the above configuration, which router will pass through the 190.10.0.0/16 network segment on RTA to access the 192.10.0.0/16 network segment?
Which attribute of BGP routing determines the principle of route selection through this router?

Question104: The command to cancel the automatic route aggregation of the RIP protocol on the MSR router is ___________.

Question105: As shown in the figure, RTA and RTB establish an IS-IS adjacency relationship on a P2P type link.

After RTB sends LSP_N to RTA, RTA sends ______ to RTB, and RTB sends LSP_N to RTA after timing, indicating that this message is ______.

Question106: In the topology shown in the figure, perform the following configurations on RTA and RTC respectively:
RTA-ospf-1] area 1
RTA-ospf-1-area-0.0.0.1] authentication-mode simple
RTA] interface GigabitEthernet0/0
RTA-GigabitEthernet0/0] ospf authentication-mode simple plain 12345
RTC-ospf-1] area 0
RTC-ospf-1-area-0.0.0.0] authentication-mode simple
RTC] interface GigabitEthernet0/0
RTC-GigabitEthernet0/0] ospf authentication-mode simple plain 54321
If RTB needs to establish neighbor relationships with RTA and RTC respectively, which of the following configurations needs to be performed on RTB?

Question107: The correct description of the relationship between Domain and Area in IS-IS is ______.

Question108: L is a network design engineer. In a certain network project, in order to reduce the complexity, the small L design network adopts a two-layer architecture, and the access layer functions are incorporated into the convergence layer. In the design, the small L takes into account that the core layer needs to have a fast convergence function, and the convergence layer performs route aggregation to reduce the number of routes. Among the following routing protocols, which one should be used by Little L as the core layer routing protocol? (Choose one or more)

Question109: In the network shown in the figure, the static route ip route-static 0.0.0.0 0.0.0.0 s1/0 is configured on RTA, and the static route ip route-static 10.0.0.0 23 s1/0 is configured on RTB.

Under what circumstances will a routing loop occur between RTA and RTB?

Question110: There are a large number of static routes with tags of 100 and 200 on RTA. RTA and RTB run OSPF routing protocol, and RTB needs to learn all static routes on RTA. At the same time, it is required that on RTB, the priority of the route with tag 200 is 200.
To achieve the above requirements, which of the following configurations is correct?

Question111: RTA and RTB are not directly interconnected and are located in autonomous systems 100 and 200 respectively. The loopback0 address of RTA is 1.1.1.1, and the loopback address of RTB is 0 2.2.2.2.

If an EBGP neighbor relationship is established with loopback0 between RTA and RTB, which of the following configurations is the correct configuration on RTA?

Question112: V In the network shown in the figure, the correct IP addresses have been configured on RTA, RTB and RTC.
Execute the following commands on the three routers RTA, RTB and RTC:
RTA-Serial5/0] ospf dr-priorit100
RTA] ospf 1 router-id 1.1.1.1
RTA-ospf-1] area 0
RTA-ospf-1] peer 192.168.1.2
RTA-ospf-1] peer 192.168.1.3
RTA-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.2
RTB] ospf 1 router-id 2.2.2.2
RTB-ospf-1] area 0
RTB-ospf-1] peer 192.168.1.1
RTB-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255
RTC] ospf 1 router-id 3.3.3.3
RTC-ospf-1] area 0
RTC-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255
Judging from the above configuration, ________

Question113: After executing the displaospf routing command on the MSR router RTA, the router output is as follows:

From the above output, you can judge ______.

Question114: In the IS-IS network as shown in the figure, each router is configured as follows.
RTA-isis-1]cost-ste wide
RTB-isis-1]cost-ste wide-compatible
RTC-isis-1]cost-ste narrow-compatible
Then the link cost between each other can be calculated correctly is ________.

Question115: In the topology shown in the figure, perform the following configuration in RTA and RTB respectively:
RTA-ospf-1-area-0.0.0.1]network 192.168.0.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.1.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.2.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.3.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.4.0 0.0.0.255
RTB] acl number 2000
RTB-acl-basic-2000] rule 0 permit source 192.168.1.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1] filter 2000 export
Then the impossible routes in the RTC routing table are _____

Question116: Regarding filter-polic filtering RIP routing, which of the following statements are correct?

Question117: The figure shows an OSI routing network. The route between RTB and RTE in the figure should be _______ route.

Question118: In the topology shown in the figure, by executing the import-route direct command on RTA, inject 192.168.0.0/24, 192.168.1.0/24,
For the five routes of 192.168.2.0/24, 192.168.3.0/24 and 192.168.4.0/24, RTB is now required to not learn the above routes. What configuration can be performed on RTA?

Question119: In a certain network project, the customer considers that network users may increase substantially in the future, so the network is required to have better scalability.
Which of the following measures can improve the scalability of the network?

Question120: In the topology shown in the figure, by executing the import-route direct command on RTA, inject 192.168.0.0/24, 192.168.1.0/24, 192.168.2.0/24, 192.168.3.0/24 and 192.168.4.0/ 24 These five routes, and perform the following configuration on RTA, RTB and RTC respectively:
RTA]ospf 1
RTA-ospf-1]area 1
RTA-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 1.1.1.1 0.0.0.0
RTA-ospf-1]asbr-summar192.168.0.0 255.255.252.0
RTB]ospf 1
RTB-ospf-1]area 1
RTB-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1]area 0
RTB-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
RTB-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTC]ospf 1
RTC-ospf-1]area 0
RTC-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
RTC-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
Then the possible routes in the RTB routing table are _____

Question121: RTA and RTB run OSPF routing protocol, and both belong to the backbone area.
Which of the following methods can be used to advertise the RTA direct route 192.168.1.0/24 to the OSPF routing domain?

Question122: Which of the following methods of routing filtering are feasible?

Question123: As shown in the figure, 4 routers are connected to an Ethernet link. The router interface is a broadcast network type. Judging from the information in the figure, there are ________ IS-IS adjacencies on the Ethernet link.

Question124: Two MSR routers RTA and RTB are connected through the 192.168.1.0/20 network segment. Now execute the following commands on the two routers:
RTA] ospf 1
RTA-ospf-1] area 0
RTA-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255
RTB] ospf 100
RTB-ospf-100] area 1
RTB-ospf-100-area-0.0.0.1] network 192.168.1.0 0.0.0.255
From the above configuration, you can judge ______.

Question125: Among the following routing protocols, _______ supports manual route aggregation. (Choose one or more)

Question126: In the topology shown in the figure, the following configurations are performed on RTA, RTB, RTC and RTD respectively:
RTA-LoopBack0] ip address 1.1.1.1 255.255.255.255
RTA]ospf 1
RTA-ospf-1]area 1
RTA-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTA-ospf-1]import-route direct
RTB-LoopBack0] ip address 2.2.2.2 255.255.255.255
RTB]ospf 1
RTB-ospf-1]area 1
RTB-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1]area 0
RTB-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
RTB-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTC-LoopBack0] ip address 3.3.3.3 255.255.255.255
RTC]ospf 1
RTC-ospf-1]area 0
RTC-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTC-ospf-1-area-0.0.0.0]area 2
RTC-ospf-1-area-0.0.0.2]nssa
RTC-ospf-1-area-0.0.0.2]network 30.0.0.0 0.0.0.255
RTC-ospf-1-area-0.0.0.2]network 3.3.3.3 0.0.0.0
RTD-LoopBack0] ip address 4.4.4.4 255.255.255.255
RTD]ospf 1
RTD-ospf-1]area 2
RTD-ospf-1-area-0.0.0.2]network 30.0.0.0 0.0.0.255
RTD-ospf-1-area-0.0.0.2]nssa
RTD-ospf-1]import-route direct
Which of the following routes may exist in the RTD routing table ______.