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Free H12-821_V1.0 Exam Braindumps (page: 17)

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PDF with 219 Questions

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?

  1. Voltage monitoring
  2. Temperature monitoring
  3. Fan control
  4. System power-on and power-off control

Answer(s): A,B,C,D

Explanation:

The monitoring plane's primary role is environmental monitoring, ensuring the stability of the system. Functions like voltage monitoring, temperature tracking, fan speed control, and power management are standard. These are independent of the forwarding or control planes and critical for maintaining device health in network operations .



Which of the following statement regarding the display ospf peer command output is true?

  1. Address: 10.1,1.1 Indicates that the local interface address is 10.1.1.1.
  2. Through negotiation during DD packet exchange, the local end becomes the slave.
  3. Router ID indicates that the local router ID Is 10.1.1.1.
  4. The DR address is 10.1.1.1

Answer(s): B

Explanation:

The command output indicates that the OSPF neighbor state is Full and that the neighbor relationship has been established. The statement confirms that the negotiation process during the exchange of DD (Database Description) packets has determined the role of the router, with the local device becoming the slave in the Master-Slave relationship, which is critical for LSA synchronization. The other options do not align with the output or OSPF principles



Which of the following statements regarding different LSA types is false?

  1. LS Request packets contain only LS Type, LS ID, and Advertising Router.
  2. LS Ack packets contain complete LSA information.
  3. DD packets contain only LSA summary information, including LS Type, LS ID, Advertising Router, and LS Sequence Number.
  4. LS Update packets contain complete LSA information.

Answer(s): B

Explanation:

LS Ack (Link State Acknowledgment) packets are used to acknowledge received LSAs and do not contain complete LSA information. Instead, they contain only the headers of LSAs being acknowledged. This contrasts with LS Update packets, which carry full LSA details. The misunderstanding of LS Ack functionality makes this statement false .



To prevent inter-area routing loops, OSPF does not allow advertising routing information between two non-backbone areas and allows sing routing information only within an area or between the backbone area and a non-backbone area. Therefore, each ABR must be connected to the backbone area.

  1. TRUE
  2. FALSE

Answer(s): A

Explanation:

OSPF (Open Shortest Path First) mandates that the backbone area (Area 0) serves as the central area for routing information exchange. To avoid inter-area routing loops, routing information is only exchanged between the backbone area and non-backbone areas, not directly between two non- backbone areas. Consequently, each Area Border Router (ABR) must connect to the backbone area to facilitate this routing exchange .






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