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NEW QUESTION 24
Preferences of routing protocols determine the sequence In which a router selects a route among routes to the same destination /earned through different routing protocols.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 25
A monitoring plane usually comprises the monitoring units of main control boards and interface boards. This plane can monitor the system environment independently. Which of the following environment monitoring functions can be provided by the monitoring plane?
- A. Temperature monitoring
- B. Fan control
- C. Voltage monitoring
- D. System power-on and power-off control
Answer: A
NEW QUESTION 26
Which of the following attacks is not the network layer attack?
- A. IP spoofing attack
- B. ARP spoofing attack
- C. ICMP attack
- D. Smurf attack
Answer: B
NEW QUESTION 27
RSTP provides different functions in different scenarios. Which of the following statements Is false?
- A. When the designated port enabled with root protection receives optimal RST BPDUs, the port enters the Discarding state and does not forward packets. If the port does not receive optimal RST BPDUs within a certain period of time, the port will automatically restore to the Forwarding state
- B. If the edge port on the switch enabled with BPDU protection receives RST BPDU, the switch sets the edge port as a non-edge-port and triggers STP calculation
- C. After TC-BPDU attack defense function is enabled, you can set the number of times the switch processes TC BPDUs within a certain period
- D. The role of the designated port that is enabled with root protection cannot be changed
Answer: B
NEW QUESTION 28
Which of the following statements regarding different LSA types is false?
- A. LS Request packets contain only LS Type, LS ID, and Advertising Router.
- B. LS Ack packets contain complete LSA information.
- C. LS Update packets contain complete LSA information.
- D. DD packets contain only LSA summary information, including LS Type, LS ID, Advertising Router, and LS Sequence Number.
Answer: C
NEW QUESTION 29
Which of the following PIM protocol packets have unicast destination addresses.
- A. Graft
- B. Bootstrap
- C. Register Stop
- D. Assert
Answer: A
NEW QUESTION 30
There are two BFD operating modes. In_______mode, the local end sends BFD Control packets at specified intervals, and the remote end checks whether the local end periodically sends BFD Control packets. (Use lowercase letters.)
Answer:
Explanation:
primary
NEW QUESTION 31
Which of the following statements regarding OSPF route summarization is false?
- A. Route summarization can reduce routing information, decrease the routing table size, and improve router performance.
- B. Route summarization is the process of summarizing routes with the same prefix into one route and then advertising only the summarized route to other areas.
- C. OSPF supports two route summarization modes: ABR summarization and ASBR summarization.
- D. Any router in OSPF can summarize routes.
Answer: A
NEW QUESTION 32
According to BGP route selection rules, the route with the higher Local_Pref is preferred.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 33
After which of the following parameters are modified does an IS-IS neighbor relationship need to re-established?
- A. The cost of an IS-IS interface is changed.
- B. The level of an ISIS interface is changed.
- C. The interval at which an IS-IS interface sends IIH packets is changed.
- D. The IP address of an ISIS interface is changed.
Answer: B
NEW QUESTION 34
To inject IGP routes into BGP routes, you can only use the network command.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 35
Compared with STP, RSTP defines the different port states. Which of the following statements regarding discarding and learning states are true?
- A. The port In learning stole docs not learn MAC addresses table.
- B. The port in discarding state does not learn MAC addresses table.
- C. The port In discarding or learning state does not forward data frames.
- D. The port in discarding or learning state does not learn MAC addresses
Answer: D
NEW QUESTION 36
Which of the following statements about multicast packet forwarding is true?
- A. The source address of a multicast packet is a unicast address.
- B. IGMP snooping cannot control the scope of multicast traffic flooding on a Layer 2 network.
- C. If a multicast data packet fails the RPF check, the packet must have been received through a sub-optimal interface. However, this interface still receives and forwards the multicast traffic downstream.
- D. In multicast transmission, the destination address of a packet can be the unicast address of a host.
Answer: C
NEW QUESTION 37
Compress the 2001:0DBB:B8:0000:C030:0000:0000:09A0:CDEF address.___________(if the answer contains letters, capitalize them.)
Answer:
Explanation:
pending
NEW QUESTION 38
The traffic limiting policy feature only supports the number of connections initiated by the specified IP or the number of connections received.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 39
Which of the following statements is false, based on the following IGMP information on an interface of RTA?
- A. The IGMP version is IGMPV2.
- B. The IP address of the interface is 192.168.1.1.
- C. The interval for sending group-specific Query messages is 60s.
- D. The maximum time for response to Query messages is 10s.
Answer: D
NEW QUESTION 40
In BGP, the origin attribute of the routes imported using the import-route command is incomplete.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 41
Four routers run ISIS and have established adjacencies. The area IDs and router levels are marked in the following figure. If route leaking is configured on R3, which of the following is the cost of the route from R4 to 10.0.2.2/32?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 42
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