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NEW QUESTION 51
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 RTB through neighbors are ______.
- A. 10.3.4.0/30
- B. 10.1.3.0/30
- C. 10.2.3.0/30
- D. 10.1.2.0/30
Answer: A,B
NEW QUESTION 52
In the OSI network system, what has the similar function as the IP protocol in TCP/IP is _________.
- A. Connectionless Network Service (CLNS)
- B. Network Protocol Data Unit (NPDU)
- C. Connectionless Network Protocol (CLNP)
- D. Network Service Access Point (NSAP)
Answer: C
NEW QUESTION 53
Regarding the Stub area and NSSA area of the OSPF protocol, the following statements are incorrect: _______
- A. Tpe4 LSA injection is not allowed in stub area and NSSA area
- B. The injection of Tpe5 LSA is not allowed in the stub area, while the injection of Tpe5 LSA is allowed in the NSSA area
- C. Both stub area and NSSA area allow injection of Tpe3 LSA
- D. The injection of Tpe7 LSA is not allowed in the stub area, while the injection of Tpe7 LSA is allowed in the NSSA area
Answer: A,C,D
NEW QUESTION 54
In the BGP priority process, each attribute has a different priority.
Regarding the priority of these attributes, which of the following arrangements is correct?
- A. Local priority, Preferred-value, MEDRouter, ID
- B. AS path, MED, IGP Metric, Originator_ID
- C. MED, ORIGIN, IGP Metric, Router ID
- D. Local priority, ORIGIN, MEDRouter, ID
Answer: B,D
NEW QUESTION 55
A local area network has been in operation for 2 years (17,520 hours), and was out of service for 6 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 4 hours due to a software failure. Regarding the availability of this network (Availabilit), which of the following statements are correct?
- A. Before expansion, network availability was 99.97%
- B. From the beginning of the network to the present, its availability is 99.99%
- C. The availability of the network after the expansion is better than before the expansion
- D. The availability of the network after the expansion is worse than before the expansion
Answer: A,D
NEW QUESTION 56
After the BGP router receives the route from the peer, its basic operation is _________.
- A. Ingress Strategy>Aggregation>Preferred Routing>Installation>Exit Strategy
- B. Ingress Strategy>Preferred Routing>Installation>Aggregation>Exit Strategy
- C. Ingress Strategy>Preferred Routing>Aggregation>Installation>Exit Strategy
- D. Ingress Strategy>Aggregation>Installation>Preferred Routing>Exit Strategy
Answer: A
NEW QUESTION 57
The networking is shown in the figure. RTA and RTB are located in AS 1001, RTC, RTD, and RTE are located in AS 1002. AS 1001 advertises BGP routes 11.11.11.0/24 to AS 1002. The main BGP configurations of RTC and RTD are as follows, if RTE , RTC's interconnection link is interrupted, RTE visits the 11.11.11.0/24 network segment, which wide area link is the priority to go through?
RTC]
bgp 1002
preference 20 170 200
peerRTA as-number 1001
peerRTD as-number 1002
peerRTA route-policsetmed import
route-policsetmed permit node 10
applcost 100
RTD]
bgp 1002
preference 20 170 200
peerRTB as-number 1001
peerRTC as-number 1002
peerRTA route-policsetmed import
route-policsetmed permit node 10
applcost 200
- A. Pass WAN link 2 first, because eBGP routing on RTD takes precedence.
- B. Pass through WAN link 1 first, because eBGP routing on RTC is preferred.
- C. Pass WAN link 2 first, because RTD MED 200>RTC MED 100.
- D. Pass through wide area link 1 first, because RTC's MED 100 is less than RTD's MED 200
Answer: A
NEW QUESTION 58
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?
- A. Messages with a message length of 101~1000 bytes will be forwarded according to policy routing
- B. Data streams matching Alc3000 will be forwarded according to policy routing
- C. In the data stream matching Alc3000, the message with the message length of 101~1000 bytes will be forwarded according to the policy routing
- D. Data flow matching Alc3000 and messages with a message length of 101~1000 bytes will be forwarded according to policy routing
Answer: C
NEW QUESTION 59
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.
- A. Set the Local Preference value of the route sent by RTB to RTD to 200
- B. Set the Local Preference value of the route sent by RTC to RTD to 50
- C. Set the Local Preference value of the route sent by RTB to RTD to 50
- D. Set the Local Preference value of the route sent by RTC to RTD to 200
Answer: A,B
NEW QUESTION 60
Regarding the Tpe4 LSA in the OSPF protocol, the correct statement is ______
- A. The role of Tpe4 LSA is to inform the routers in the area how to reach the ASBR
- B. Tpe4 LSA is generated by ASBR
- C. The target network actually described by Tpe4 LSA is the OSPF Router ID of the ASBR
- D. The propagation range of Tpe4 LSA is limited to the backbone area
Answer: A,C
NEW QUESTION 61
M executes the displaospf vlink command on the MSR router RTA, the router output is as follows:
$?OSPF Process 100 with Router ID 3.3.3.3
Virtual Links
Virtual-link Neighbor-ID -> 2.2.2.2, Neighbor-State: Full
Interface: 20.0.0.1 (GigabitEthernet0/1)
Cost: 1 State: P-2-P Tpe: Virtual
Transit Area: 0.0.0.1
Timers: Hello 10, Dead 40, Retransmit 5, Transmit Dela1
From the above output, you can judge _______.
- A. The link overhead of the virtual connection is 1
- B. The interface for establishing the virtual connection is GigabitEthernet0/1
- C. Area1 cannot be a stub area
- D. The Hello timer and neighbor failure time of the virtual connection are 10S and 40S respectively
Answer: A,B,C,D
NEW QUESTION 62
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?
- A. Data flows matching Acl 3000 will be forwarded according to policy routing
- B. Data streams matching Acl 3000 will be forwarded according to the default route
- C. The data stream matching Acl 3000 will be forwarded according to the normal route
- D. Data streams matching Acl 3000 will be discarded
Answer: A
NEW QUESTION 63
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 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 ______.
- A. 2.2.2.2/32
- B. 1.1.1.1/32
- C. 10.0.0.0/24
- D. 3.3.3.3/32
Answer: A,C,D
NEW QUESTION 64
As shown in the picture.
The figure is an OSI routing network, the route between RTC and RTE in the figure should be _______ route.
- A. Level-0
- B. Level-2
- C. Level-1
- D. Level-3
Answer: D
NEW QUESTION 65
In the IS-IS network as shown in the figure, RTA, RTC, RTD, and RTE establish a Level-2 neighbor relationship with each other; RTB, RTA, and RTC establish a Level-1 neighbor relationship. After the reasons for each router are stable, when RTB accesses 192.168.14.1, the next hop is ______.
If RTC adds the following configuration at this time:
RTC-isis-1]import-route isis level-2 into level-1
Then when RTB accesses 192.168.4.1, the next hop is ______.
- A. RTA; RTC
- B. RTC; RTA
- C. RTA; RTA
- D. RTC; RTC
Answer: D
NEW QUESTION 66
In BGP protocol messages, unreachable routing information is advertised through ______.
- A. KEEPALIVE
- B. ROUTE-REFRESH
- C. NOTIFICATION
- D. UPDATE
Answer: D
NEW QUESTION 67
For the NSEL field in the NSAP address, the following description is correct.
- A. NSEL is used to indicate the link layer protocol type
- B. In the IP routing environment, the value of NSEL is usually FF
- C. NET can be regarded as the NSAP address with NSEL being 0
- D. NSEL is used to indicate the upper layer protocol type, similar to the Protocol field in the IP protocol
Answer: C,D
NEW QUESTION 68
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?
- A. RTA configuration: route-polic1 permit node 10 if-match tag 100 route-polic1 permit node 20 if-match tag 200 ospf import-route static route-polic1 RTB configuration: route-polic2 permit node 10 if-match tag 200 applpreference 200 ospf preference ase route-polic2 150
- B. RTA configuration: route-polic1 permit node 10 if-match tag 100 appltag 100 route-polic1 permit node 20 if-match tag 200 appltag 200 ospf import-route static route-polic1 RTB configuration: route-polic2 permit node 10 if-match tag 200 applpreference 200 ospf preference ase route-polic2 150
- C. RTA configuration: ospf import-route static RTB configuration: route-polic2 permit node 10 if-match tag 200 ospf preference ase route-polic2 200
- D. RTA configuration: route-polic1 permit node 10 if-match tag 100 appltag 100 route-polic1 permit node 20 if-match tag 200 appltag 200 ospf import-route static route-polic1 RTB configuration: route-polic2 permit node 10 if-match tag 200 ospf preference ase route-polic2 200
Answer: B
NEW QUESTION 69
In the topology shown in the figure, execute the following commands on RTA:
RTA-ospf-1] default-route-advertise
The default route cannot be observed in the routing table of the RTC router. The possible reason is ______
- A. There is no default route in RTA's routing table
- B. RTA failed to inject the default route into the OSPF area through the import command
- C. PBR is configured on RTC to filter the default route
- D. The alwa parameter is not configured in the default-route-advertise command
Answer: A,D
NEW QUESTION 70
Which of the following descriptions about the address prefix list is correct is _______.
- A. permit 10.0.0.0 24 indicates that the network that matches the mask in the 10.0.0.0/24 interval is greater than or equal to 24 bits
- B. permit 0.0.0.0 0 less-eual 32 indicates that all routes are matched
- C. permit 0.0.0.0 0 indicates that all routes are matched
- D. permit 10.0.0.0 24 indicates that only the 10.0.0.0/24 network segment is matched
Answer: B,D
NEW QUESTION 71
About the difference between system policy routing and interface policy routing. The correct statement is _________
- A. System policy routing only affects local messages, and does not affect forwarded messages
- B. Interface policy routing works on both locally generated packets and forwarded packets
- C. Interface policy routing only affects forwarded packets, and does not affect locally generated packets
- D. System policy routing works on both locally generated and forwarded packets
Answer: A,C
NEW QUESTION 72
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