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NEW QUESTION # 62
OSPF networks are classified into broadcast, P2P, P2MP, and NBMA networks. Which of the following types of networks use the default Hello time (30s)?
Answer: C,D
Explanation:
Default OSPF Hello Timer:
The OSPF Hello timer is used to send periodic Hello packets and maintain neighbor relationships.
Default Hello timers:
Broadcast and P2P: 10 seconds
NBMA and P2MP: 30 seconds
Network Types Using 30s Hello Time:
P2MP (C): OSPF sends Hello packets every 30 seconds by default.
NBMA (D): OSPF also uses 30 seconds for NBMA networks.
NEW QUESTION # 63
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?
Answer: 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.
NEW QUESTION # 64
R1, R2, R3, and R4 run IS-IS, and the DIS priorities of their interfaces are shown in the following figure. If all these devices are started simultaneously, will be elected as the DIS. (Enter the device name, for example, R1.)
Answer:
Explanation:
R4
* DIS Election in IS-IS:
* In IS-IS, the Designated Intermediate System (DIS) is elected on broadcast networks to reduce the number of LSAs exchanged and maintain the LSDB.
* The DIS is elected based on priority:
* The router with the highest priority is elected as the DIS.
* If priorities are equal, the System ID is used as a tie-breaker, and the router with the highest System ID becomes the DIS.
NEW QUESTION # 65
Which of the following descriptions of VRRP versions are correct? (Multiple choice)
Answer: B,D
NEW QUESTION # 66
On an OSPF network, routers learn routing information on the entire network by exchanging LSAs. Which of the following values is the LS Age in the LSA header when an LSA is deleted?
Answer: B
Explanation:
LSA Lifetime and Deletion
The LS Age field in the LSA header tracks the age of an LSA. When the LS Age reaches its maximum value (3600 seconds), the LSA is marked for deletion. This ensures old or stale LSAs are removed from the network to maintain accurate routing information.
NEW QUESTION # 67
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