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السؤال #1
The path that IP packets pass through on an MPLS network is called a label switched path (LSP). An LSP is a bidirectional path that specifies the transmission direction of data flows.
A. ATRUE
B. BFALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #2
According to this figure, we can judge:
A. R4 does not have any IS-IS neighbors
B. R4 and ee8c
C. R4 and ee8c
D. R4 and ee8c
عرض الإجابة
اجابة صحيحة: B
السؤال #3
As shown in the figure:
A. S-Leve1 of R3 and R1 do not match
B. 3 and R1 have different area codes
C. he IIH certification of R3 and R1 failed
D. he System ID of R3 and R1 are duplicated
عرض الإجابة
اجابة صحيحة: D
السؤال #4
As shown in the figure, the network administrator deploys the DHCP Snooping function on the switch to defend against attacks by DHCP Server impersonators. Which of the following interfaces should be set as a DHCP trusted interface?
A. GE0/0/2correct
B. GE0/0/3
C. GE0/0/1
D. GE0/0/4
عرض الإجابة
اجابة صحيحة: A
السؤال #5
Which of the following statements is false when troubleshooting the dual-active failure of the VRRP backup group?
A. There is no need to check whether the switch port that transmits VRRP advertisement packets is in the same VLANcorrect
B. Need to check whether the VRRP group IDs on the interface are the same
C. Need to check whether the interface IP address is in the same network segment
D. Need to check whether the virtual IP addresses of the VRRP group are the same
عرض الإجابة
اجابة صحيحة: A
السؤال #6
The Router ID of R4 is 10.0.4.4. In the LSDB of R4, the LSA shown in the figure is seen. The network engineer makes the following inferences based on the LSA. Which one is wrong?
A. This LSA is generated by R4
B. R4 has two OSPFv3 neighbors
C. R4 is the DR on both links
D. R4 does not support importing external routes into OSPFv3correct
عرض الإجابة
اجابة صحيحة: D
السؤال #7
In OSPF, ABR converts all Type 7 LSAs in the NSSA area to Type 5 LSAs.
A. TRUE
B. FALSEcorrect
عرض الإجابة
اجابة صحيحة: B
السؤال #8
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-way devices, which of the following statements is false?
A. When routing is delivered, the Next Hop attribute must be an IPv6 global unicast addresscorrect
B. BGP4+ transmits routing information between peers through Update packets
C. If the Update packet carries the AP REACH NLRI attribute, it means that the advertisement is a reachable route
D. Route transmission will carry recognized mandatory attributes such as AS Path
عرض الإجابة
اجابة صحيحة: A
السؤال #9
As shown in the figure, Client1 and Client2 serve as clients of RR1 and RR2 at the same time. RR1 and RR2 are in the same Cluster, and R1 has entered 10 routes. It is assumed that BGP is configured correctly. All neighbor relationships have been established. How many routing entries exist in the BGP routing table of Client2?
A. 10
B. 20correct
C. 0
D. 15
عرض الإجابة
اجابة صحيحة: B
السؤال #10
OSPFV2 is an IGP running on an IPV4 network; OSPFv3 is an IGP running on an IPV6 network. The basic working mechanism of OSPFv3 is the same as that of OSPFv2, such as the election of DR and BDR. As shown in the figure, an engineer uses three routers to test IPv6 services. He wants to realize the interconnection of IPv6 networks by running OSPFv3. Which of the following statements about the election of the network DR is correct?
A. After the network converges, the engineer changes the priority of R1 to 100, the priority of R2 to 10, and the default value of R3
B. After the network converges, a new device R4 is added to the broadcast link
C. After the network converges, R1 is powered off and restarted, and when the network converges again, R3 is the DRcorrect
D. After the network converges, R1 is the DR
عرض الإجابة
اجابة صحيحة: C
السؤال #11
The routing attributes of the three routing entries are shown in the figure. It is assumed that the next hops of the three routing entries are reachable. When the three routing entries arrive at the BP router in sequence, which routing entry will BGP choose in the end by default?
A. Route B
B. Route C
C. Route Acorrect
عرض الإجابة
اجابة صحيحة: C
السؤال #12
When the device logs in to other devices as an SSH client and fails to log in using public key authentication, which of the following are possible reasons? (Multiple choice)
A. The user public key stored on the server is wrongcorrect
B. The client does not enable the first authentication functioncorrect
C. Missing local key paircorrect
D. The server private key saved on the client is wrong
عرض الإجابة
اجابة صحيحة: ABC
السؤال #13
In the OSPFv3 network shown in the figure, the interconnected ports of R1, R2, and R3 have OSPFv3 enabled, and the Router ID of each device is 10.0.X.X, where X is the device number. Check the detailed information of a certain LSA on R3. From the output information, it can be inferred that the LSA is generated by R2, and it describes the IPv6 prefix address associated with the Network-LSA.
A. Truecorrect
B. False
عرض الإجابة
اجابة صحيحة: A
السؤال #14
In OSPF, ABR will convert all Type 7 LSAs in the NSSA area into Type 5 LSAs.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #15
In the network shown in the figure below, if a remote LDP session between SWA and SWC is to be realized, which of the following statement is correct?
A. It is not necessary to specify the lsr-id of the correct peer
B. The configuration in the figure can already be implemented
C. You need to create a remote peer and specify the lsr-id of the peercorrect
D. Need to configure the direct connection interface to establish a TCP connection
عرض الإجابة
اجابة صحيحة: C
السؤال #16
The IS-IS neighbor relationship between R3 and R1 is not established. According to the information in this figure, what is the possible reason?
A. The IIH authentication of R3 and R1 failedcorrect
B. The System IDs of R3 and R1 are duplicated
C. The lS-Level of R3 and R1 do not match
D. The circuit-type of the interconnection interface of R3 and R1 does not match
عرض الإجابة
اجابة صحيحة: A
السؤال #17
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?
A. ArealNone inType3 LSA
B. Area 1forNSSAarea
C. R2WillType7 LSAThe default route is converted toType5 LSAdefault route for
D. R2existOSPFThe default route is delivered in the process
عرض الإجابة
اجابة صحيحة: BD
السؤال #18
A network engineer accidentally deleted the IP address of an interface through the command line. If he wants to view the deleted IP address, which of the following information should he query?
A. Debug information
B. Log informationcorrect
C. Trap information
D. SNMP agent information
عرض الإجابة
اجابة صحيحة: B
السؤال #19
In the network shown in the figure, adjacent routers use directly connected interfaces to establish EBGP neighbor relationships. The AS number is 6500X, where X is the router number. R1 and R4 both have static routes to 192.168.1.0/24, which are introduced into BGP through import. The maximum number of equal-cost routes configured for EBGP load sharing on R3 is 8. By default, the number of equal-cost routes from R3 to 192.168.1.0/24 is which of the following?
A. 2correct
B. 8
C. 1
D. 3
عرض الإجابة
اجابة صحيحة: A
السؤال #20
In the OSPF network shown in the figure, the cost value of the link is marked in the figure. R1 has enabled OSPP IP FR and configured the "maximum load-balancing 8" command in the OSPF process. Which of the following is the cost value of reaching 10.0.35.0/24 in R1's routing table?
A. 10
B. 30correct
C. 20
D. 40
عرض الإجابة
اجابة صحيحة: B
السؤال #21
In the IS-IS network shown in the figure, R1 introduces the default route through the "default-route-advertise always level-1" command. Which of the following descriptions are correct? (Multiple choice)
A. There is a default route in R3's routing tablecorrect
B. There is a default route in R2's routing tablecorrect
C. There is no default route in R1's routing tablecorrect
D. Although R1 is configured with the "default-route-advertise always level-1" command, it cannot import the default route
عرض الإجابة
اجابة صحيحة: ABC
السؤال #22
In the figure, the company wants to ensure secure communication between the headquarters and branch, and isolate the R&D areas from non-R&D areas, without changing the current network deployment. To meet this requirement, an administrator deploys BGP/MPLS IP VPN on the network. Which of the following statements are true?
A. To enable communication between the headquarters and branch R&D areas, both the ERT and IRT of VPN1 and VPN2 can be set to 100:100
B. To implement communication between the headquarters and branch R&D areas, the RDs of VPN1 and VPN2 need to be set to the same value
C. R&D areas and non-R&D areas have overlapping address spaces
D. To isolate R&D areas from non-R&D areas at the headquarters, the RTs of VPN1 can all be set to 100:100 and the RTs of VPN3 can all be set to 200:200
عرض الإجابة
اجابة صحيحة: AD
السؤال #23
Which of the following are static information coke analysis?
A. Interface Type
B. Packet loss rate
C. License
D. Equipment type
عرض الإجابة
اجابة صحيحة: ACD
السؤال #24
When the switch is configured with port isolation function, by default, different hosts belonging to the same VLAN cannot communicate at layer 1 and layer 3.
A. True
B. Falsecorrect
عرض الإجابة
اجابة صحيحة: B
السؤال #25
According to the configuration shown in the figure below, you can know that R4 has an interface advertised into IS-IS?
A. 1
B. 3correct
C. 2
D. 0
عرض الإجابة
اجابة صحيحة: B
السؤال #26
Which of the following are not included in the security protection actions that a secure MAC address can perform?
A. Protect
B. Restrict
C. Shutdown
D. Remark
عرض الإجابة
اجابة صحيحة: D
السؤال #27
As shown in the figure, Site1 and Site2 need to achieve mutual access through the operator's BGP/MPLS IPVPN. It is known that the public network tunnel between PE1 and PE2 has been established (the label information is shown in the figure), and PE1 has advertised the route of network segment 192.168.1.0/24 in Site1 to PE2 through the MPLS BGP neighbor relationship, and the route learning is normal. When grabbing between P and PE1, when Site2 accesses the 192.168.1.0/24 data of Site1, what should be the oute
A. 6661
B. 3
C. 6662
D. 8888correct
عرض الإجابة
اجابة صحيحة: D
السؤال #28
In the OSPFv3 network shown in the figure, area 1 is an NSSA area. R1 imports the external route 2000::1/128 into OSPFv3. What types of LSAs are in area 0 by default? (Multiple choice)
A. Link-LSAcorrect
B. Inter-Area-Router-LSA
C. Inter-Area-Prefix-LSAcorrect
D. Intra-Area Prefix-LSAcorrect
عرض الإجابة
اجابة صحيحة: ACD
السؤال #29
When creating an IPv6 static route, for a point-to-point interface, the outbound interface must be specified. For a broadcast type interface, the next hop must be specified.
A. True
B. Falsecorrect
عرض الإجابة
اجابة صحيحة: B
السؤال #30
On a PIM-SM multicast network, a network engineer finds that multicast clients cannot receive multicast dat a. Which of the following is not a possible cause of this problem?
A. AThe unicast routes from multicast devices to the RP are unavailable
B. BThe downstream interfaces of multicast devices do not receive any (*, G) Join messages
C. CDownstream interfaces of multicast devices are disabled from forwarding State-Refresh messages
D. DThe RP addresses of multicast devices are different
عرض الإجابة
اجابة صحيحة: C

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