CCNA（200-301）自测题目-Network Fundamentals

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Which three statements about MAC addresses are correct? (Choose three.)

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To communicate with other devices on a network, a network device must have a unique MAC address.

The MAC address is also referred to as the IP address.

The MAC address of a device must be configured in the Cisco IOS CLI by a user with administrative privileges.

A MAC address contains two main components, the first of which identifies the manufacturer of the hardware and the second of which uniquely identifies the hardware.

An example of a MAC address is 0A:26:B8: D6:65:90.

A MAC address contains two main components, the first of which identifies the network on which the host resides and the second of which uniquely identifies the host on the network.

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Which three statements about network characteristics are true? (Choose three.)

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Speed is a measure of the data rate in bits per second of a given link in the network.

Scalability indicates how many nodes are currently on the network.

The logical topology is the arrangement of cables, network devices, and end systems.

Availability is a measure of the probability that the network will be available for use when it is required.

Reliability indicates the dependability of the components that make up the network.

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Which two statements about the purpose of the OSI model are accurate? (Choose two.)

Defines the network functions that occur at each layer

Facilitates an understanding of how information travels throughout a network

Changes in one layer do not impact other layer

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