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NEW QUESTION # 40
Please pair the following DHCP attack types with corresponding explanations.
- A. DHCPstarvation attack-3 DHCPPhishing attack man-in-the-middle attack-2 DHCPPacket flood attack-4
- B. DHCPstarvation attack-4 DHCPPhishing attack-3man-in-the-middle attack-2 DHCPPacket flood attack-1
- C. DHCPstarvation attack-1 DHCPPhishing attack-3man-in-the-middle attack-2 DHCPPacket flood attack-4
- D. DHCPstarvation attack-2 DHCPPhishing attack-3man-in-the-middle attack-1 DHCPPacket flood attack-4
Answer: C
NEW QUESTION # 41
From this figure, we can conclude that
- A. R4andee8c.aOc2.baf3establishedIPv4,IPv6ofIS-ISNeighbor
- B. R4not anyIS-ISNeighbor
- C. R4andee8C. aOe2.baf3only establishedIPv6ofIS-ISNeighbor
- D. R4andee8c.aOc2.bat3only establishedIPv4ofIS-ISNeighbor
Answer: A
NEW QUESTION # 42
Network administrator A wants to use AS-Path Fiter to match routing entries with the BGP routing attribute AS_PATH [100 200 300]. Network administrator A sorts out the four configurations in the figure. Which of the following configurations can satisfy the network administrator A's requirement? (Multiple choice)
- A. Method A
- B. Method D
- C. Method B
- D. Method C
Answer: A,C
NEW QUESTION # 43
Which of the following regular expressions can only match BGP routing entries that pass through AS200 and then AS300?
- A. _[200 300]_
- B. ^200|^300
- C. 200$|300$
- D. _(200 300)_
Answer: D
NEW QUESTION # 44
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?
- A. IP address conflict
- B. The duplex modes of the interfaces on both ends are inconsistent
- C. Inconsistent interface authentication
- D. The receiving and emitting power of both ends is inconsistent
Answer: D
NEW QUESTION # 45
Which of the following options is incorrect:
- A. Created by assigning labels staticallyLSPIt can also be dynamically adjusted according to changes in network topology, without administrator intervention.
pre - B. dynamicLSPDynamically established through the label publishing protocol, such asMP-BGP, RSVP-TE, LDP
- C. The principle to be followed when manually assigning labels is: the value of the outgoing label of the upstream node is the value of the incoming label of the downstream node
- D. LSPstaticLSPand dynamicLSPtwo kinds. staticLSPManual configuration by administrator, dynamicLSPthen use Dynamic establishment of label protocol
Answer: D
NEW QUESTION # 46
In an operator's MPLSVPN network, there are two devices, PE1 and PE2, for MPLSVPN data forwarding. PE1 receives a 172.16.1.0/24 private network route from the client, and transforms it into a VPNv4 route on PE1 and assigns labels. Released to PE2 as 1027. The outgoing label of the MPLSLSR-ID from PE2 to PE1 is 1025.
When the client on PE2 accesses 172.16.1.0/24, the inner and outer labels of the frame sent by PE2 should be the combination of the following options?
- A. Outer label: 1027, inner label: 1027
- B. Outer label: 1025, inner label: 1025
- C. Outer label: 1025, inner label: 1027
- D. Outer label: 1027, inner label: 1025
Answer: C
NEW QUESTION # 47
By default, LDP adjacencies will trigger the establishment of LSP based on the IP routing of the 32bit address.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION # 48
When configuring the DHCP Relay function on the device, the VLANIF interface of the relay connected to the client must be bound to the DHCP server group, and the bound DHCP server group must be configured with the proxy DHCP server IP address.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 49
IS-IS is a link state routing protocol that uses the SPF algorithm for routing calculations. A park has deployed IPv4 and IPv6 at the same time and runs IS-IS to achieve network interconnection. As shown in the figure, the network IPv4 and IPv6 have the same overhead, and R1 and R4 only support IPv4. By default, in the calculated IPv6 shortest path tree, the next hop device for R2 to access R6 is () (Note: The device name must be consistent with the figure, such as: R1)
Answer:
Explanation:
R3
NEW QUESTION # 50
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)
Answer:
Explanation:
STUBROUTER
NEW QUESTION # 51
You have set IS-IS IPv6 enable under the interface, what is the meaning of this command?
- A. activate on the interfaceIPv6 IS-ISprocess10
- B. activate on the interfaceIPv6 IS-ISprocess2
- C. Activate on the interfaceIPv6 IS-ISprocess1
- D. Activate on the interfaceIPv6 IS-ISprocess3
Answer: C
NEW QUESTION # 52
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?
- A. By default, in the shortest path tree formed by IPv6 network calculation, the path from R1 to R4 is: R1-R2-R4. Since R2 does not support IPv6, R2 will directly discard IPv6 packets after receiving them, causing traffic loss.
- B. If you want IPv4 and IPv6 network computation to form the same shortest path tree, you need to run the ipv6 enable topology ipv6 command to enable the IPv6 capability in the IS-IS process.
- C. By default, IPv4 and IPv6 networks will be calculated separately to form different shortest path trees
- D. By default, since R2 does not support IPv6, in the shortest path tree formed by IPv6 network calculation, the path from R1 to R4 is: R1-R3-R4
Answer: D
NEW QUESTION # 53
According to this picture, what can we judge? (Multiple choice)
- A. There must be an LSDB of Leve1-2 on R1
- B. R1's GE0/0/0 must have the Leve1-2 capability
- C. R1 has 2 IS-IS neighbors
- D. R1's GE0/0/1 must have Leve1-2 capability
Answer: A,B,C,D
NEW QUESTION # 54
Please match the command with the function implemented.
- A. display device-® Display version-® Display memory-usage-® Display cpu-usage-?
- B. display device-® Display version-® Display memory-usage-® Display cpu-usage-?
- C. display device-® Display version-® Display memory-usage-® Display cpu-usage-?
- D. display device-® Display version-® Display memory-usage-® Display cpu-usage-?
Answer: A
NEW QUESTION # 55
The output information of a router is as follows. Which of the following reasons cause the OSPF adjacency relationship to fail to be established normally? (Multiple choice)
- A. Inconsistent area codes
- B. The IP address mask of the interface is inconsistent
- C. The interval for sending Hello packets is inconsistent
- D. Inconsistent area types
Answer: A,C
NEW QUESTION # 56
If the sticky MA, C function is enabled on an interface, by default, the number of MA, C addresses learned by the interface is as large as few?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 57
A campus has deployed IPv6 for service testing. There are 4 routers in the network, running 0SPFV3.
Interconnection of IPv6 networks. As shown in the figure, an engineer checked the LSDB of R2 and intercepted one of them Link-LSAs. Which of the following statements is true about the description of this LSA?
- A. ShouldLSAshowR2External routing is not supported, but participatingIPv6route calculation
- B. R2interfaceGEO/O/OThe link-local address force:FE80::2E0;FCFF:FEC, D:4F79
- C. R2interfaceGE0/0/0IPV6address prefix:2001:2343:23: :/64
- D. produce theLSAThe router isR2
Answer: B,C,D
NEW QUESTION # 58
IS-IS supports multi-instance and multi-process, that is, on an IS-IS router. You can configure multiple VPN instances to be associated with multiple IS-IS processes.
Which of the following descriptions about IS-IS multi-instance and multi-process are correct? (Multiple choice)
- A. A VPN instance can be associated with multiple different IS-IS processes
- B. If an IS-IS router creates multiple IS-IS processes, each process does not affect each other and is independent of each other
- C. One IS-IS process can only be associated with one VPN instance
- D. One IS-IS process can be associated with multiple different VPN instances
Answer: A,B,C
NEW QUESTION # 59
LDP messages are exchanged between LSRs running the LDP protocol. LDP messages can be divided into four types according to their functions. Which of the following is not an LDP message type?
- A. Conversation message
- B. Label exchange messages
- C. Announcement
- D. Discovery
Answer: B
NEW QUESTION # 60
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